Untitled - Ice, Ice Machines, Commercial Ice Machines, Ice Makers

KM Sequence of Operation
“A” & “B” Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
“C” & “Alpine” Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
KM Check Out Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
10 Minute Check Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Reservior Flush System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Componet Checks
Float Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Thermistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Bin Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Cleaning/Sanitizing
KM Production
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Procedure
Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Water and Refrigeration Circuit Reference Chart .........
KM Performance Data (R-502 Units)
KM-250B-B .........................................................
KM-250B_C .........................................................
KM-250M-B ........................................................
KM-451 D .............................................................
KM-452D .............................................................
KM-450M-B ........................................................
KM-601 D .............................................................
KM-631 D .............................................................
KM-632D .............................................................
KM-630M-B ........................................................
KM-800M-B ........................................................
KM-l 201 D ...........................................................
KM-l 200M-B ......................................................
KM-l 200S_B .......................................................
KM-l 600M-B ......................................................
KM-l 600M-B3 ....................................................
KM-l 600S_B .......................................................
KM-l 600S_B3 .....................................................
KM-2000S_B3 .....................................................
NOTE: Performance Data Chart includes the following:
A. Model
B. Supply Voltage
C. Total Amperage (Compressor RLA*)
D. Ice production per cycle
E. Water cooled condenser water consumption
. Production 24 hours
ii
~
32
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
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G. Freeze cycle time
H. Harvest cycle time
I. High side pressure
J. Suction pressure
*Amperage taken 5 minutes into freeze with
air temperature 104°F and water temperature
Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
KM Wiring Diagram Reference
Remote Condenser
Flake lr/DCM
Installation
80°F.
69
Data ,............................................m
- General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
99
Componant Technical Data ..........................................
99
Gear Motor Safeties ............................................
99
Auger Bearings ...................................................
Bearing Inspection .................................. .......... 100
Auger Inspection / Bearing Replacement.. ....... 100
Flaker Sequence of Operation
Flaker Periodic Flush . . . . . . . . . . . . . . . . . . . ..................... 102
DCM Sequence
of Operation
F/DCM Production
........................... .......... 103
Check .................................
.......... 103
Water and Refrigeration Circuit
Reference Chart . . ..,...........................................
104
Flaker Performance Data
F-251 B ...............................................................
F-251 U, F-250B .................................................
F-441 U, F-440B .................................................
F-450B ...............................................................
F-450B w/ Cubelet Kit ............................. ..........
F-650M ..............................................................
F-650M w/ Cubelet Kit ............................ ..........
F-l OOOM ............................................................
F-l IOIA .............................................................
F-l 100 w/ Cubelet Kit ............................ ..........
F-l 1 OOM ............................................................
F-2000M ............................................................
F-2000M3 ..........................................................
115
116
117
118
119
120
121
122
123
124
125
126
127
.. .
III
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DCM Performance Data
DCM-231 U, DCM241 U ......................................
DCM-240 BAA, BAB .........................................
DCM-451 U, DCM-450B .....................................
DCM-701 U, DCM-700B .....................................
128
128
129
130
DCM Wiring Diagram Reference
Chart . . . . . . . . . . . . . . . . . . . . . . 131
Flaker Wiring Diagram Referance
Chart . . . . . . . . . . . . . . . . . . . . 132
iv
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g/27/96
IDENTIFICATION
CODE
KM - 12 -IO -F . -I
UNITTYPE
-r
-
KM - Crescent Cuber
Flaker
FDCM - Dispenser Cubelet Maker
Dispenser Bin
DB Bin
BDM - Countertop Dispenser
PRODUCTION
Approximate production/24
70°F Air/SO”F Water
Hours
UNIT STYLE
M/D/A- Modular
Stackable
SSelf contained
B-
CONDENSER
ANWR/S -
with bin
STYLE
Air cooled
Water cooled
Remote air cooled
GENERATION
Model designation
U - US Model Designation
(First Production)
The model number, serial number, electrical specifications
and refrigerant data are found on the unit name plate. (See
name plate)
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g/27/96
See the Nameplate for electrical and refrigeration specifications.This Nameplate is located on the upper right hand side
of rear panel. Since this Nameplate is located on the rear
panel of the icemaker, it cannot be read when the back of the
icemaker is against a wall or against another piece of kitchen
equipment. Therefore, the necessary electrical and refrigeration information is also on the rating label included on
later model units. This label can be easily seen by removing
only the front panel of the icemaker. We reserve the right to
make changes in specifications and design without prior notice. (Nameplate may vary slightly with older models)
-2p
g/27/96
REGISTRATIONTwo warranty registration cards are supplied with the
equipment. They must be completed and sent in to initiate
warranty. The warranty begins on the date of installation if
registration procedures are followed. If registration is not
completed, the warranty date will be the date of sale or
date of shipment from the factory, respectively.
WARRANTY
COVERAGE-
The warranty will cover defects in material or workmanship
under normal and proper use and maintenance service as
specified by Hoshizaki. Coverage for parts and labor is
limited to the repair or replacement of parts or assemblies
that in Hoshizaki’s opinion are defective.
WARRANTY
STATUS-
The warranty coverage for R-502 / R-l 2 equipment varies
depending on the model and date of manufacture. Refer to
the warranty statement shipped with the unit to establish
the warranty coverage for that model.
If you need warranty status for later model units, contact
the Care Department with complete model and serial
number. We will provide you with the installation date and
warranty status , if available. You will find the model and
serial number on the nameplate located on the rear of the
unit. Early model units will have the serial number
stamped in ink in the compressor compartment.
See Warranty Statement supplied with the unit for details.
Warranty valid in United States, Canada, Mexico, Puerto
Rico, and U. S. Virgin Islands.
Contact factory for warranty
or possessions.
-3-
in other countries,
territories,
g/27/96
KM INSTALLATION
GENERAL
-
The ice machine is not intended for outdoor use.
OPERATING
CONDITIONS
- ALL MODELS
ITEM
Voltage Range
MODEL
115V units
208-230 V units
Ambient Temperature
Remote Condenser
All
Water SupplyTemperature
All
RANGE
104- 127V.
187-264V.
45 - 100 Deg. F.
Early -20 - 110 Deg. F.
Later -20 - 122 Deg F.
45 - 90 Deg. F.
Early 7 -113 PSIG
Later 10 - 113 PSIG
Water Supply Pressure
Allow 6” clearance at rear, sides, and top for proper air
circulation and ease of maintenance or service. 20” top
clearance for F/DCM.
PLUMBING
REQUIREMENTS
-
Water Supply:
On KM units the water supply line size is critical due to the
water assisted harvest and the use of a ported inlet water
valve solenoid.
MODEL
KM-250 - KM-800
KM-1200 - KM-2000
All F/DCM
Line Size
318” OD
l/2” OD
318” OD
*Water cooled condenser units require
supplies sized as per list above.
Fittinq Size
l/2” FPT
l/2” FPT
l/2” FPT
two separate
Drain:
MODEL
Line Size
Fittinq Size
All Bins
3/4” OD
3/4” FPT
Early KM’s
I” FPT
3/4” OD
3/4” FPT
Later KM’s
3/4” OD
**FIakers
3/4” OD
3/4” FPT*
**DCM
3/4” FPT*
3/4” OD
*Some models have 2 drain outlets.
** Some early models had insert type drain fitings
-4-
9127196
Hoshizaki recommends that the ice machine drain and bin
drain be piped separately to the drain connection point
allowing ii4” per foot fall.
CONDENSATE
DRAIN
-
The condensate drain is generally connected to the ice
machine drain for simplicity. It can be piped separately to
the drain exit if desired.
A 6” vent tee is recommended
as per drawing:
Condensate
Drain
Reservoir
Drain
/
FLOW RATES The minimum flow rate requirements
maker units are as follows:
KM-250/AI I Flakers
KM-451 /452/450
KM-601/631/630/800/Ail
KM-l 200/l 600
KM-1201/2000
DCM’s
for Hoshizaki
1.05
1.58
2.11
3.96
4.23
ice
GPM
GPM
GPM
GPM
GPM
Use this information when sizing a filter system for the ice
machine application.
NOTE: A good rule of thumb is to utilize a 3 GPM flow rate
filter for KM-250 - 800 and a 5 GPM flow rate filter for KM1200 or larger.
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g/27/96
ELECTRICAL
CONNECTIONS
115VOLT/l
-
PHASE
(Ground
screw not
used on early
models)
115V.
(2 wire
w/gnd)
208=23OVOLT/l PHASE
208-23OV/l Phase units require a dedicated
the use of 115V components.
neutral due to
The dedicated
neutral
requires an
insulated
conductor
which runs
directly to the
panel.
If high leg is present connect to black wire
208-230 VOLT/3 PHASE
208-230V.
3 phase
(3 wire
w/gnd)
-
REMOTE CONDENSER
Fan
Control
Circut
From
Unit
115V.
Neutral
GND+@
CONNECTIONS
(Remote
wiring color
varies on
early
models)
9127196
REMOTE APPLICATIONS
CONDENSER CHART
CONDENSER
S-0466
s-0454
S-0387
U RC-4A
U RC-GA/B
MODEL
MODEL NUMBERS
KM-601/631 DSU
KM-l 201 DSU
F-l IOIASU
KM-452DSU, KM-450MRB
KM-632DSU, KM-630MRB,
F-l 000/l 1 OOMRB
URC-12B/C
KM-800/l 200MRB,
KM1 200SRB
U RC-20C
KM-l 600/2000MRB,
KM1 600/2OOOSRB
F-2000MRB
When installing a remote application the unit/condenser
combination must match with the above chart. A non-OEM
multi-pass condenser can be used with prior written factory
approval.
REMOTE LINESHoshizaki has 3 precharged line set lengths. 20 foot, 35
foot, and 55 foot sets are available. The line sets are
available in different line sizes for different models.
LINE SET IDENTIFICATION
R502
Refrigerant
-
CODE
35
6
10
m
Length In Feet
Liquid
Line Size in 16th’s
Discharge
Line Size in 16th’s
LINE SET APPLICATIONS
MODELS
KM-452/450/631/
632/630
F-l 000/l 100
KM-l 201
KM-800/l 200
KM-l 600/2000
LINE SET
R502--46-2
R502--46-2
R502--66-2
R502--68-2
R502--610
-7-
LL (SIZE] DL
l/4”
l/4”
3/8”
3/8”
3/8”
OD
OD
OD
OD
OD
3/8”
3/8”
3/8”
l/2”
5/8”
OD
OD
OD
OD
OD
9127196
Remote Condenser
Installation
on Roof
For best
performance
allow 24”
clearance for
air circulation
For best performance the Remote
Condenser should
not be more then
33’ above the
icemaker or more
then 10’ below it.
These distances
are measured from
or Connection
..........................................
.........................................
-8-
9127196
LINE SET INSTALLATION
A universal line set adapter kit, part number OS-QUICK, is
available if you need to field engineer your line set. Both
lines should be insulated separately the entire length of
run.
The refrigerant charge for a new unit is distributed between
the unit head and the remote condenser. The line set has a
minimal holding charge of 15 to 30 psig refrigerant vapor.
If you need to field engineer your line set or shorten/
lengthen a precharged line set you can do so by following
these steps:
1. Using the OS-QUICK kit, braze the line set connections. (If you shorten or lengthen a precharged line
set, recover the holding charge, cut or lengthen and
braze the connections.)
2. Pressurize
the lines and leak check all braze joints.
3. Evacuate the lines through the service ports on the
Aeroquip quick connect fittings.
4. Charge both lines with 15 to 30 psig R-22 vapor.
To make Aeroquip connection
condenser:
to the unit head and
1. Lubricate the th reads and O-ring with clean
refrigerant oil.
2. Tighten the female connector
until it bottoms out.
3. Then turn an additional l/4 turn to assure a good
brass to brass seal. Leak check the joints with soap
bubbles or an electronic leak detector.
-9-
g/27/96
SYSTEM CHARGE
The ice machine head and remote condenser are shipped
with enough refrigerant charge for up to 66 feet of line set
length. The maximum line set length is 100 equivalent feet
from the head to the condenser.
For applications longer than 66 ft. up to the maximum 100
ft. length, additional refrigerant must be added. For units
utilizing l/4” L.L. and 3/8” D.L., the line size should be
increased to 3/8”L.L. and U2”D.L. for the entire length of
the run. Add 21 ounces plus l/2 oz. per foot over 66 feet.
For units utilizing 3/8”L.L., add l/2 oz. per foot over 66 feet.
NOTE:
(1) Recommended
line sizes are same as listed in the
line set application chart. (Page 7)
(2) Always check the unit nameplate for the
correct refrigerant
type.
(3) If refrigerant is added due to extended line set
length, mark the correct total charge on the unit
nameplate for future reference.
(4) When routing and installing remote lines, always
use standard refrigerant
piping practices.
(5) Hoshizaki recommends eliminating any excess
loops in a pre-charged line set application before
making the unit connections. This will eliminate oil
traps and possible crimps in the excess tubing.
The total system charge is critical for proper operation
according to Hoshizaki specification. Always weigh in the
proper charge per the following charge chart. (Remote
units show standard charge good for up to 66 feet.)
~
IO ~
g/27/96
HOSHIZAKI CUBER
REFRIGERANT CHARGE CHART
MODEL
KM-250
KM-250
KM-250
KM-451
KM-452
KM-450
KM-601
KM-632
KM-630
KM-800
KM-1201
KM-l 200
KM1200
KM-l 600
KM-2000
BAB
BWB
BAC
BWC
MAB
MWB
DU
DWU
DU
DWU
DSU
MAB
MWB
MRB
DU
DWU
DU
DWU
DSU
MAB
MWB
MRB
MAB
MWB
MRB
DU
DWU
DSU
MAB
MWB
MRB
SAB
SWB
SRB
M/SWB
M/SRB
M/SWB
M/SRB
TOTAL CHARGE
1 lb.
5 oz.
13.5 oz.
13.8 oz.
13.4 oz.
13.5 oz.
12.5 oz.
9 oz.
3 oz.
10 oz.
3 oz.
5 oz.
10 oz.
1 oz.
5 oz.
3 oz.
5 oz.
3 oz.
7 oz.
12 oz.
3 oz.
8 oz.
12 oz.
1 oz.
3 oz.
13 oz.
1 lb.
1 lb.
1 lb.
1 lb.
1 lb.
1 lb.
5 Ibs.
1 lb.
1 lb.
5 Ibs.
2 Ibs.
1 lb.
2 Ibs.
1 lb.
5 Ibs.
2 Ibs.
1 Ibs.
5 Ibs.
3 Ibs.
2 Ibs.
8 Ibs.
4 Ibs.
2 lb.
11 Ibs.
4 Ibs.
2 Ibs.
11 Ibs.
4 Ibs.
2 Ibs.
12 Ibs.
2 Ibs.
17 Ibs.
3 Ibs.
17 Ibs.
7 oz.
1 oz.
6 oz.
1 oz.
11 oz.
6 oz.
2
14
10
12
10
oz.
oz.
oz.
oz.
oz.
REFRIGERANT
R-502
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
LL
g/27/96
HOSHIZAKI FLAKERWDCM’S
REFRIGERANT CHARGE CHART
TOTAL
B
U
BAA
U
BAA
1 lb.
BAB
BWB
1 lb.
F-650 MAB
MWB
4 Ibs.
MRB
1 Ibs.
F-l 000 MAB
1 lb.
MWB
6 Ibs.
MRB
1 Ibs.
F-1101 AU
1 Ibs.
AWU
5 Ibs.
ASU
1 lb.
F-l 100 MAB
1 lb.
MWB
5 Ibs.
MRB
1 lb.
F-2000 MWB
15 Ibs.
MRB
DCM-231 U
DCM-241 U
DCM-451 U
DCM-450 BAAIBAB
DCM-450 BWA/BWB
DCM-701 U
1 lb.
DCM-701 WU
1 lb.
DCM-700 BAA/BAB 1 lb.
DCM-700 BWA/BWB 1 lb.
MODEL
F-251
F-251
F-250
F-441
F-440
F-450
~
CHARGE
6.3 oz.
7.76 oz.
7.76 oz.
13.4 oz.
13.4 oz.
12.70~.
9 oz.
12.7 oz.
14 oz.
10 oz.
12 oz.
2 oz.
1 oz.
8 oz.
loz.
8 oz.
1 loz.
10 oz.
7.5 oz.
8.8 oz.
14.1 oz.
14.1 oz.
10.6 oz.
12.2 oz.
6.9 oz.
12.2 oz.
6.9 oz.
12 ~
REFRIGERANT
R-12
R-12
R-12
R-12
R-12
R-502
R-502
R-502
R-502
R-502
R-502
R-502
R-502
R-502
R-502
R-502
R-502
R-502
R-502
R-502
R-502
R-12
R-12
R-12
R-12
R-12
R-502
R-502
R-502
R-502
g/27/96
HEAT LOAD
The heat of rejection information listed below by model
number should be used for sizing air conditioning equipment or for sizing a water cooled cooling tower application.
MODEL
KM-250B
KM-250M
KM-451 D
KM-452D
KM-450M
KM-601 / 631 D
KM-632D
KM-630M
KM-800M
KM-l 201 D
KM-l 200M
KM-l 200s
KM-l 600M/S
KM-2000M/S
TOTAL HEAT REJECTION
AIR
WATER COOLED
COOLED
(CONDENSER ONLY]
5443 BTU/h
5245 BTU/h
5450
5250
10319
8500
9220
8047
9250
6160
11509
9520
12713
11817
12713
10985
16960
12700
20300
16500
19500
17000
20550
17370
-------24393
-------28120
MODEL
F-251 B
F-251 U
F-250 B-A
F-441 U
F-440 B-A
F-450 B-B
F-650 M-B
F-l 000 M-B
F-1101 AF-l 100 M-A
F-2000 M-B
DCM-231/241 U
DCM-240 B
DCM-451 U
DCM-450 B
DCM-701 U
DCM-700 B
TOTAL HEAT REJECTION
AIR
WATER COOLED
COOLED
(CONDENSER ONLY]
3170 BTU/h
------ BTU/h
2614
-----3980
-----6030
-----6030
-----5000
2860
6830
5546
8480
6700
10600
8990
10800
9500
--18100
3040
-----3980
-----5680
5160
5680
5160
8440
6620
8440
6690
Figures shown are at 90” F air temp. 70” F water temp.
Allow for a pressure drop of 7 psi across the water cooled
condenser.
~
13 ~
g/27/96
KM-451/601/631/1201
First Generation
(unit starts in harvest)
The first generation of KM cubers used an “A” style control
board. This board has a variable resistor in the upper right
hand corner marked VRI. To adjust the defrost completion
timer and extend the harvest period, turn VRI “CW”. The
range extends from 1 to 4 minutes. Fully “CCW” provides
1 minute on the completion timer. Extending the harvest
will increase the flush for more cleaning. The factory
setting is 1 minute (fully CCW).
KM-451/ 631/1201
Second
Generation
(unit starts in harvest)
The control board on the second generation of KM cubers
was changed to a “B” style. This board uses two dip
switches to adjust the defrost completion timer. A dip
switch setting chart is printed on the board, beside the
switches. Adjust the two switches to extend the harvest
period from 1 to 4 minutes. This board also has a 60
minute back-up freeze completion timer and a high
temperature safety included. The factory setting is 1
minute. The “B” style board is a direct replacement for the
“A” board.
KM-452/632/ early M & S units
Third Generation
(unit starts in 1 minute fill cycle and has every cycle pump-out)
The third generation control board for the KM cubers is a
“C” style board. This board has 4 dip switches. Number 1
& 2 adjust the defrost completion timer from 1 to 3 minutes.
Number 3 & 4 adjust the length of pump-out and should
remain in the factory position. The pump-out will occur
after every harvest cycle on these units. For the factory
setting, see the dip switch setting chart for Alpine boards.
The “C” board replacement is the Universal Alpine #
2UO139-01. This is a direct replacement.
Install the
universal board and adjust the 8 dip switches by model per
the dip switch setting chart. “C” board switches 1 through 4
are the same as on the Alpine board.
KM later model M & S units
Forth Generation
(unit starts in 1 minute fill cycle and has every cycle pump-out)
All KM Units are now manufactured with the original Alpine
control board part # 2UO127-01 (subs to # SAOOOI). This
board has 8 dip switches and provides the ability to adjust
~
14 ~
g/27/96
for pump-out to occur every 1, 2, 5, or 10 cycles. The
setting guide below explains the Original and Universal
Alpine dip switches.
Note: The Universal Alpine # 2UOO139-01 can be used to
replace the Original Alpine # 2UO127-01 if a slight
modification is made. Follow the instructions
supplied
with the replacement board which instruct you to cut the
black jumped (R065) for this application.
DIP SWITCH SE
ADJUSTMENTS
DIP
DEFROST
TIMER
ADJUSTMENT
PUMP OUT
0
3
LENGTH
PERIODIC
1
0
1
4
0
0
1
1
seconds
10
10
10
20
5
0
1
0
1
PUMP OUT
FREQUENCY
6
TEST
0
0
1
1
glF
II2
II5
l/IO
OFF FOR TEST
8
Switch Code
=ON
O=Off
I/VSTRUCTIO/VS:
TO IMPROVE BUILT-IN CLEANING Adjust switches
per this guide. Switches 1 & 2 provide for longer flush
at the end of harvest. Switches 5 & 6 provide
maximum cleaning at every cycle 1 / 1 setting. The 1 /
10 setting will pump-out less to conserve water (less
cleaning).
DO NOT ADJUST SWITCHES 3,4,7, & 8 FROM
THE FACTORY SETTINGS !
DO NOT MAKE CONNECTIONTOTHE
RED K-4
TERMINAL !
The replacement board should be adjusted to the
factory settings unless local conditions require
alternate settings to improve cleaning.
~
15 ~
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1
0
0
7
-I
000000000
000000000
-7-700000
-7-700000
ooo-o---000000000
Orn
3 ooo-o--->
ooooo----
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g/27/96
9127196
HEAD PRESSURE CONTROLS
WATER COOLED
An adjustable (Pressure Modulated) water regulating valve
is installed on the water cooled condenser outlet. Adjust
the valve per this diagram to reflect the outlet temperature
in the chart below.
ADJUSTMENT
Adjust:
SCREW
CW - for higher
pressure and outlet
water temperature,
lower water flow.
CCW - for lower
pressure and outlet
water temperature,
higher water flow.
TOP VIEW
CONDENSER
Model
KM-250BWB /
BWC / MWC
KM-451 DWU ,
KM-450 MWB
KM-601/631/
632DWU
KM-630 MWB
KM-800 MWB
KM-2000 SWB
OUTLET WATER TEMPERATURE RANGE
Ranqe (F”)
Ranqe (F”)
Model
100 - 104
KM-1201DWU
110 - 115
100 - 104
KM-1200 MWB
100 - 104
100 - 104
KM-1200 SWB
108 - 113
100 - 104
102 - 108
104 - 115
KM-1600 MWB
KM-1600 SWB
All Flaker / DCM
104 - 115
104 - 115
100 - 104
REMOTE
All remote condenser units use a condenser pressure
regulator ( CPR or Headmaster ) to maintain adequate
head pressure in low ambient conditions. This valve is
located in the remote condenser unit. The replacement
valve is a Sporlan 190 psi LAC-4 valve Hoshizaki part
number 440918-01. This valve can be used on any remote
R-502 unit.
The symptoms of a bad headmaster are similar to an
undercharged unit. To diagnose a headmaster, add
~
19 ~
g/27/96
additional refrigerant in 2 lb. increments and watch the
pressures. If the pressures begin to look normal, the unit
was undercharged.
If not, a bad headmaster is a possibility. Check to see if the valve is stuck open or closed by
conducting temperature test at the outlet of the headmaster.
Always use safe refrigeration practices when removing the
valve and protect from overheating.
HIGH PRESSURE SAFETY SWITCH An automatic reset high pressure safety switch is used on
some Flakers and DCM’s, and on all KM series units. The
pressure switch settings are as follows:
MODELS
PART NUMBER
CUT OUT
(psig)
F-441U , DCM-451U DCM-450B
3110069-03
228 +I- 21.3
CUT IN
(psig)
185 +I- 21.3
KM-451 D , KM-6OIU , KM-63 1 D , DCM-70 IU , DCM-700B
3110069-01
356 +I- 21.3
256 +I- 21.3
KM-l 201 D
-B/M/S
3110069-04
AIR COOLED
43344 I-05
356 +I- 21.3
& REMOTE
384 +I- 21.3
256 +I- 21.3
284 +I- 21.3
KM-B / M / S WATER COOLED, F-450B , F-650M ,
FIOOOM , F-2000M
433441-01
355.6 +I- 21.3
256 +I- 21.3
F-IIOIA
, F-l 1OOM
4256 79-01
356 +I- 21.3
296 +/- 21.3
BIN CONTROL
KM series units use a thermostatic bin control. The
capillary bulb is mounted in the ice drop zone or on a drop
down bracket which extends into the bin cavity. The drop
down bracket should be secured to the unit base and plug
connection must be made before the unit will operate.
When replacing a thermostatic bin control, be sure to use
the ABS mounting hardware supplied with the new control.
~
20 ~
g/27/96
Check the operation of the bin control by holding ice
against the thermostatic bulb with the unit running. The
unit should shut down within 6 to 10 seconds. Adjust the
control “CCW ” for a faster shut down. If the bin control
bulb is not contacting the ice pyramid, a bracket extention
may be needed.
Flaker / DCM units use mechanical bin controls. A paddle
pivots on a hinge pin to operate either a microswitch or
magnetic proximity switch. For proper operation, assure
that the paddle swings freely.
CAPACITORS
See wiring diagram reference chart for capacitor
ratings.
HOSHIZAKI KM CUBER SEQUENCE
OF OPERATION FOR “A” & “B”
CONTROL BOARD UNITS
1.
Harvest Cycle
The unit always starts in the ha ,rvest cycle. When the
power switch is set to the “ICE” position and the bin
control is closed (calling for ice) the harvest cycle
begins. The compressor and remote fan motor starts,
the hot gas valve opens, and the inlet water valve(s)
opens. This is a hot gas defrost with water assist. The
water flows through the center of the evaporator, picks
up heat from the serpentine and transfers it to the
stainless freezing surface. When the suction line
temperature reaches 48°F (43°F on KM-120 1) the
thermistor which is mounted to the suction line signals
the board to start the defrost completion timer. This
timer is factory set at 1 minute, however, it can be
adjusted from 1 to 4 minutes.
The total harvest time will be the time it takes for the
evaporator to reach 48°F or 43°F plus the defrost
completion timer setting. Total harvest time will be
longer in the winter due to the colder incoming water
temperature. The inlet water valve will be open a
maximum time of 3 minutes on KM-451/601/631 water
cooled models and 4 minutes on other “A” & “B” board
models or the length of harvest, whichever is less.
~
21 ~
g/27/96
At the end of every harvest, water overflows the
reservoir stand pipe to flush concentrated minerals
out of the reservoir and down the drain. This
flush can be extended by adjusting the defrost
completion timer to a longer setting. Remember that
this will lengthen the total harvest time.
2.
Freeze Cycle
When the defrost completion timer times out, the
freeze cycle begins. The compressor continues to
operate, the hot gas and inlet water valves close, and
the pump motor and self contained condenser fan
motor starts. For the first five minutes of freeze, a
short cycle protection timer on the board is in control.
After 5 minutes, the control board re-checks the
thermistor for 43°F (38°F for KM-1201). this assures
that the hot gas valve has closed. The float switch now
assumes control of the freeze cycle.
You will notice that the total cycle time for KM units is
up to three times that of other cubers in the market.
This longer cycle is designed into the unit operation.
See the unit performance data by model in this guide
for actual cycle times.
As the water cools and ice forms on the evaporator,
the water level in the reservoir drops. When the level
drops, the float in the float switch drops and finally
opens the circuit. This starts the next harvest cycle
(cycle returns to 1 above). The water level in the
reservoir actually controls the float switch circuit. If the
float is adjusted upwards, the unit will cycle quicker
allowing for a smaller cube size. The unit is shipped
from the factory with the float switch adjusted to the
large cube size. This setting provides the best
efficiency for the KM series units.
FOR FACTORY SUPPORT
HOSHIZAKI CARE AT:
co NTACT
1 -800-233-I 940
~
22 ~
g/27/96
HOSHIZAKI KM CUBER
SEQUENCE OF OPERATION
For ALL “C” or ALPINE control board units, KM452, 632,
M & S Models
THE STEPS IN THE SEQUENCE
ARE AS FOLLOWS:
1. 1 Minute Fill Cycle
The unit always starts in the 1 minute fill cycle. When
power is applied to the unit the water valve is energized
and the fill period begins. After 1 minute the board
checks for a closed float switch. If the float switch is
closed the harvest cycle begins. If not, the unit will not
start without adequate water in the sump. This serves
as a low water safety shut off. The water valve will
remain energized through additional 1 minute cycles
until water enters the sump and the float switch closes.
2. 1st Harvest Cycle
The compressor starts, hot gas valve opens, water
valve remains open and harvest begins. As the
evaporator warms, the thermistor located on the
suction line checks for a 48” F. temperature. When
48” F. is reached, the harvest is turned over to the
adjustable control board defrost timer which is factory
set for normal conditions. This adjustment can vary the
defrost timer from 1 to 3 minutes.
3. Freeze Cycle
After the timer terminates the harvest cycle, the
hot gas and water valves close, and the freeze
cycle starts. For the first 5 minutes the controller
board will not accept a signal from the float switch to
end the freeze cycle. This 5 minute minimum freeze
acts as a short cycle protection.
At the end of 5
minutes the float switch assumes control. As ice builds
on the evaporator the water level in the sump lowers.
The freeze continues until the float switch opens and
terminates ice production.
4. Harvest
Pump Out
When the float switch opens and signals the
completion of the freeze cycle, the harvest cycle
begins. The hot gas valve opens and the compressor
~
23 ~
g/27/96
continues to run. The d rain
IO/20 second pump ou t.
starts counting the
The water pump stops for 2 seconds and reverses,
taking water from the bottom of the sump and forcing
pressure against the check valve seat allowing water to
go through the check valve and down the drain. At the
same time water flows through the small tube to power
flush the float switch. When the drain timer stops
counting, the pump out is complete.
Pump out always occurs on the 2nd harvest after
startup. The Alpine control board allows for adjustment
for pump out to occur every cycle, or every 2nd, 5th or
10th cycle from this point.
5. Normal Harvest Cycle
The water valve opens to allow water to assist the
harvest. As the evaporator warms, the thermistor
reaches 48” F. The control board receives the
thermistor signal and starts the defrost timer. The water
valve is open during harvest (defrost) for a maximum of
6 minutes or the length of harvest, whichever is shorter.
When the defrost timer completes its count down, the
defrost cycle is complete and the next freeze cycle
starts.
The unit continues through 3, 4 and 5 sequence until
the bin control senses ice and shuts the unit down.
KM CHECK OUT PROCEDURE
The 10 minute check out procedure is basically a
sequence check which can be used at unit start up or for
system diagnosis. Using this check out procedure will allow
you to diagnose electrical system and component failures
in approximately 10 minutes under normal operating
conditions of 70°F or warmer air and 50°F or warmer water
temperatures.
Before conducting a 10 minute check out,
check for correct installation, proper voltage per unit name
plate and adequate water supply. As you go through the
procedure, check to assure the components energize and
de-energize correctly. If not, those components and
controls are suspect.
~
24 ~
9127196
10 MINUTE CHECK OUT PROCEDURE
ALPINE CONTROL BOARD
I-Turn
power off-Gain
access to control board
2-Turn
power on-place
control switch in ice position
A) 1 minute fill period-WV
energized
After 1 minute control board checks FS. If FS is
closed . . . unit cycles to Harvest. Continue to (B).
If FS is open unit repeats 1 minute fill cycle until
switch closes (low water safety protection during
initial start up and at the end of each harvest.)
B) Initial Harvest Cycle WV remains energized, C,
HGV, (FM on RS model) energize. Evaporator
warms-thermistor
senses 48°F turns operation of
harvest to control board defrost completion timertimer completes-unit cycles to freeze continue to (C)
* Harvest time varies with water and air temp.
(Average 2-3 minutes). If unit fails to cycle into
freeze, check thermistor and control board.
C) Freeze cycle-C remains energized, PM (LV on RS
model) and FM energized, WV, HGV de-energized.
Unit is locked in freeze by 5 minute short cycle
protection timer. After 5 minutes, freeze cycle
operation is transferred to FS for freeze termination. During first 5 minutes of freeze, confirm that
evaporator temp. drops. After 7 minutes in freeze,
remove black float switch lead from control board
(K5) terminal . . . unit should immediately switch to
normal Harvest Cycle-continue
to (D).
*If unit remains in Freeze after 7 minutes with
FS lead removed, change control board.
D) Normal Harvest Cycle (IO/20 second pump out) C
remains energized, HGV energizes. PM stops for 2
seconds and starts in reverse rotation for 1 O/20
seconds. (This removes contaminants from water
sump through check valve and down the drain and
allows for power flush of FS.) Check clear tubing at
check valve, or unit drain for water flow to affirm
pumpout.
~
25 ~
g/27/96
E) Normal harvest continues -WV energized- return
to (B).
* Unit continues through sequence (B) . . (C) . .
(D) until bin control is satisfied or power is
turned off.
* Unit starts at (A) any time bin control operates
or power is interrupted.
NOTE: A & B control board check out procedure
requires additional time (approximately 18 minutes total).
Same sequence as above excluding step (A) 1 minute fill
and (D) 1O/20 second pump out. In step (C) allow 10 to 12
minutes in freeze before removing FS lead.
LV = Line Valve
Legend: C = Compressor
PM = Pump Motor
CC = Contractor Coil
FM = Condenser Fan Motor RS = Remote System
FS = Float Switch
WV = Inlet Water Valve
HGV = Hot Gas Valve
RESERVOIR FLUSH SYSTEM
A displacement device ( cap or assembly ) is positioned
over the top of the overflow stand pipe. This device allows
sediment to be pulled from the bottom of the reservoir and
flush down the drain when overflow occurs. Water should
always overflow the stand pipe for a short period towards
the end of harvest to allow this flushing action. If overflow
does not occur, you have restricted water flow into the unit.
Check the inlet water valve screen , your incoming water
line size or the external filtration system.
Pump out models have a built-in power flush of the float
switch. Models without a pump out will have a white,
gravity flow, flush box mounted inside of the evaporator
compartment. This box has an internal stand pipe with a
siphon cap over it. A small fill tube fills the box with water
from the inlet supply pipe during harvest. When this box
fills completely, it empties due to the siphon effect and
flushes the float tank. If the water valve is leaking by, the
box will fill in freeze and empty into the float. This can
cause premature harvest or a short cycling effect.
~
26 ~
g/27/96
COMPONENT
CHECKS:
1. Check out the float switch with an ohm meter. When the
float is up, the switch is closed. When the float is fully
down, the switch is open. The symptoms of a bad or
sticking float switch are:
Up / Closed:
60 minute freeze cycle (longer for
“A” board units)
Down / Open: “A” or “B” board units will cycle
back to harvest after 5 to 7 minutes
in freeze. “C” or Alpine board units
will shut down on low water safety
(water runs continuously with no
unit operation).
2. The thermistor must be mounted securely to the suction
line using a heat sink compound. This assures good
heat transfer and accurate sensing of the suction line
temperature. Use Hoshizaki part number: 4A0683-01 or
equivalent. (Radio Shack #276-1372 or GE Electronics
#I O-81 08)
Check out the thermistor mounting and check thermistor
resistance versus temperature per this chart:
THERMISTOR TEMPERATURE / RESISTANCE
SENSOR TEMP(“F)
RESISTANCE (K OHMS)
0
14.4
10
10.6
32
6.0
50
3.9
70
2.5
90
1.6
The symptoms of a bad thermistor
are:
Open:
Unit remains in harvest for 15 minutes on “C”
board, 20 minutes on Alpine boards.
Unit remains in harvest permanently on “A”
or “B” boards.
Shorted:
Unit locks out on manual reset high temperature safety.
Note: On “B”, “C”, & Alpine boards, if the evaporator
reaches 127°F the thermistor signal (500 ohms) shuts
down the unit on this manual reset safety. This is the only
~
27 ~
9127196
manual safety in the KM series units. To
turn the unit power off and back on.
3.
safety
For “C” or Alpine board units, check out the control
board using a volt meter to check the 12 volt control
voltage at connector K2. On all boards, check for 115
to 120 VAC input and output voltage to each component at the Kl connector. High input voltage will shut
down “C” or Alpine units on an automatic reset safety.
Alpine units have a built in automatic reset low voltage
safety also.
4. The bin control used on all KM units is an adjustable,
thermostatic control. The thermostatic bulb is mounted
in the ice drop area. To adjust the bin control, hold ice
against the bulb while the unit is operating. The unit
should shut off within 6 to 10 seconds. If this does not
occur adjust the thermostatic control by turning the
screwdriver slot. Adjusting towards warmer will allow
the unit to shut down quicker. This adjustment should
be checked at installation, when diagnosing a bin
control problem, or if a replacement bin control is
installed.
KM 451 / 631 / 1201 units have a bin control bracket
that mounts under the unit. KM-250M, and all KM1200M / S and larger units have a drop down bracket
that must be dropped down, secured, and plugged in
at installation. The ice must contact the bulb to
operate the bin control. Some bin applications
require an extention bracket or relocation of the bulb
mounting to allow for proper shut down. Check this
positioning if the control is adjusted properly and ice
continues to back up into the evaporator section.
The symptom of a bad bin control are:
Stuck closed : The unit continues to operate when
the bin is full. This allows ice to back up in the
evaporator section and generally causes a freeze up
condition. This will also occur if the bin control is
adjusted to cold or fully “CW”. Check the adjustment
and bulb location before you diagnose a stuck bin
control.
~
28 ~
g/27/96
Stuck open : The unit will not start in the ice position.
An easy method to check for an open bin control on M
& S units is to flip the control switch to wash, if the
pump starts, the bin control is closed. The same check
can be used on KM-451 / 631 / 1201 units however,
they have a 2 minute time delay before the pump starts
if the unit is shut off.
DCM Bin controls may be
magnetic proximity switch
Since these controls have
that all parts move freely.
builds at the pivot points.
a mechanical flapper with a
or a micro-switch assembly.
moving parts, make sure
Sticking can occur if scale
Flakers may have either a mechanical or thermostatic
control. In some cases, depending on the model, both
types are combined to provide increased safety. Some
flakers have an additional spout safety control which
will be a thermostatic or mechanical type. This control
may have an audible alarm and has a manual reset.
The spout control backs up the bin control, shuting
down on this manual reset safety. If this occurs, always
check the bin control operation.
5.
Check other components
multimeter.
~
using a good quality
29 ~
g/27/96
A label which details the step by step cleaning/sanitizing
procedure is located on the inside front panel of the ice
machine. These instructions are also provided in the
Instruction Manual shipped with each unit. Follow these
instructions to conduct a thorough cleaning and sanitizing
of the water system.
Annual cleanings are recommended. More frequent
cleanings may be required in bad water areas.
CLEANERSHoshizaki recommends “Hoshizaki Scale Away’ or “LimeA-Way” (by Economics Laboratory, Inc.) however any FDA
approved ice machine cleaner is acceptable. If you carry a
nickel safe cleaner, the acidic solution is weaker than
normal cleaners to protect plated surfaces.You may need
to use a heavier mixture of nickel safe to cut heavier scale
deposits.
RECOMMENDED
CLEANING
SOLUTION
MIXTURE
MODEL
CLEANER
WATER
KM-250
KM-500/630/800
KM-l 200/l 600
KM-2000/2400
All Flakers / DCM
7 FI. Oz.
16 FI. Oz.
27 FI. Oz.
38 FI. Oz.
9.6 FI. Oz.
1.3
3.0
5.0
7.0
1.6
Gal.
Gal.
Gal.
Gal.
Gal.
The system should be sanitized using a solution of water
and 5.25% sodium hypochlorite. Any commercial sanitizer
recommended for ice machine application is acceptable.
RECOMMENDED
SANITIZING
SOLUTION
MIXTURE
MODEL
SANITIZER
WATER
KM-250
KM-500/630/800
KM-l 200/l 600
KM-2000/2400
All Flakers / DCM
.65
1.5
2.5
3.7
2.5
1.3
3.0
5.0
7.0
5.0
~
FI.
FI.
FI.
FI.
FI.
Oz.
Oz.
Oz.
Oz.
Oz.
30 ~
Gal.
Gal.
Gal.
Gal.
Gal.
g/27/96
The steps for a cuber production
check are as follows:
1. Time a complete cycle from the beginning of one
freeze cycle to the beginning of the next freeze
cycle.
2. Catch al of the ice from this freeze cycle and weigh
the total batch.
3. Divide the total minutes in a 24 hour day (1440
minutes) by the complete cycle time in minutes to
obtain the number of cycles per day.
4. Multiply the number of cycles per day by the cycle
batch weigh t for the cuber production per 24 hours.
(1440. Total Cycle Time) x Ice
24 Hou r Production
Weight=
Once you calculate the production, check the incoming
water temperature, and ambient condensing temperature
at the cuber and cross reference to performance data
included in this manual to see if the calculation falls within
10% of the specification.
For the most accurate production check, a normal freeze
cycle should be checked. If the evaporator compartment
has been opened for service or if the unit has been cut off
for a long period of time, the first freeze cycle will be longer
than normal. Timing this cycle can result in an inaccurate
production check. To avoid this, start the unit and allow it to
operate for 10 minutes in the freeze cycle, unplug the float
switch lead and cause the unit to cycle into harvest mode.
Replug the float switch and start timing as soon as the next
freeze begins. Also remember that the evaporator
compartment must be closed during the production check.
Removing the front cover to check the ice buildup during a
production check will allow heat into the evaporator and will
affect the total cycle time and actual production.
~
31 ~
g/27/96
WATER AND REFRIGERATION CIRCUIT
DRAWING REFERENCE CHART
MODEL
KM-250B ....................................................................
KM-250M ...................................................................
KM-451 DU .................................................................
KM-451 DWU ..............................................................
KM-452DU, DWU .......................................................
KM-450MAB, MWB ...................................................
KM-450MRB ..............................................................
KM-601 D ....................................................................
KM-631 DU, DWU .......................................................
KM-631 DSU ...............................................................
KM-632DU, DWU .......................................................
KM-632DSU ...............................................................
KM-630MAB, MWB ...................................................
KM-630MRB ..............................................................
KM-800MAB, MWB ...................................................
KM-800MRB ..............................................................
KM-l 201 DWU ............................................................
KM-l 201 DU, DSU .....................................................
KM-l 200MAB, MWB .................................................
KM-1200MRB ............................................................
KM-1200SAB, SWB ...................................................
KM1 200SRB ..............................................................
KM-l GOOMRB ............................................................
KM1 600SWB .............................................................
KM1 GOOSRB ..............................................................
KM2000SWB, SRB ....................................................
PAGE
33
34
35
36
40
40
41
36
36
37
40
41
40
41
40
41
38
39
42
43
44
45
43
44
45
46
NOTE: Some drawings have been combined to represent
more than one model.
g/27/96
KM=250BAB,
KM=250BAC,
~
KM-250BWB
KM-250BWC
33 ~
g/27/96
KM=250MAB,
KM-250MWB
Water
/==
g/27/96
KM-451 DU
**stw
%PFl,
-
~
35 ~
9127196
KM-451 DWU
KM-601 DU,
KM-601 DWU
KM-631 DU,
KM-631 DWU
g/27/96
KM-631 DSU
\.-.
~
37 ~
9127196
KM-1201 DWU
g/27/96
KM-1201 DU
KM-1201 DSU
g/27/96
KM-452 DU
KM-450 MA6
KM-632 DU
KM-630 MAB
KM-800MAB
*
KM-452
KM-450
KM-632
KM-630
KM-800
DWU
MWB
DWU
MWB
MWB
A HIGH Side access valve is included on later “M”
models
~
40 ~
g/27/96
KM-450 MRB
KM-632 DSU
KM-630 MRB
KM-800 MRB
g/27/96
KM-1200 MAB
KM-1200 MWB
Water
Spray Tube
c
Relriperant
-
Water Circuit
Regulating
Value
Line
Value
/WI
--- ---P- - - 1
-A
Drier
Circuit
Expankn
~
42 ~
Valv@
9127196
KM-1200 MRB
KM-1600 MRB
COndcrrsirlp
Pr~urt
Rqulatnr
f
m
Water Circuit
9127196
44 ~
KM-1 200 SAB
KM-1200 SWB
KM-1600 SWB
~
9127196
45 ~
KM-1200 SRB
KM-1600 SRB
___
9127196
KM-2000 SW6
KM-2000 SRB
g/27/96
~
47 ~
9127196
~
48 ~
9127196
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62 ___
g/27/96
9
63 ~
g/27/96
I
,
-
-
-
g/27/96
g/27/96
m
I
L-
I
a
CD
XL0
N
CD
XL0
N
X
g/27/96
g/27/96
a
k
P
~
69 ~
g/27/96
MODEL
KM-250BAB
A
SERIAL NUMBER
All - K, A
up to A 22955
70 ___
g/27/96
KM-250BWB
All - K, A
up to A 10705
“C” Board for other serial numbers unit see diagram B
__
I
._.
%
-------
F
!F
-
3;-.cp
-
-.-. z
-.-, *
-_
-.-.,
.-.I
6
SERIAL NUMBER
ALL after A 22956, All B,C
ALL after a 10706, All B,C
All
All
Alipne Board
P
-~-'-.-'---'-.-'-'---.-.,
i
i
i
i
71 ~
gj
r'-'-'~
i
.i
g/27/96
Later B-B and ALL B-C units have an additional
“Flush” water valve on terminal 3 of the Control
Switch and No Interlock Switch
MODEL
KM-250 BAB
KM-250 BWB
KM-250 BAC / MAB
KM-250 BWC / MWB
NOTE:
g;-
’
$!L-.
.-.-.
Si c41
Ui
fii 3L.Z.
~
0
A
rcI
N
C
KM-451 DU, DWU
No serial number break available.
If 9 pin connector has DBU jumper use this diagram.
“A” Board
g/27/96
D
73 ~
3
w
7
9127196
w
-I
KM-451 DU, DWU
No serial number break available.
If 9 pin connector has no DBU jumper use this diagram.
“B” Board
IE
~
MODEL
KM-452 DU, DWU
E
SERIAL NUMBER
ALL units produced
“C” Board
g/27/96
MODEL
KM-452 DSU
F
SERIAL NUMBER
ALL Units produced
“C” Board
g/27/96
MODEL
KM-450 MAB
KM-450 MWB
e
G
SERIAL NUMBER
ALL J, K, A up to A26245
ALL J, K, A up to A22106
“C” Board
3
____ __-_-_- *-.m+ _.l._ q
*meC-OOCn-.
76 ~
00
.._ ~._. C..
-.-.
.-
._____-_~_~~~-~.f_f.~-l..
_.-- - _-.-_-_-__
____--.-_-,-.-.-.-_____
-.-.-
i.
I
~
I
i
ii
g/27/96
MODEL
KM-450 MRB
H
-
c
%
00
.--.-.-_
_-_-.-_0
EE
SS
_-_---------------
C
.-.
-
L
SERIAL NUMBER
ALL J, K, A up to A10181
“C” Board
..
_
lb
-1
!
g/27/96
MODEL
KM-450 MAB
KM-450 MWB
i.,.,.,
i
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1
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i=
L.,.
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0’
&,,,Z
____.
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.-.-.-*-.-.-j7
-2
0’
-_-.-_-.-.
-*
.,.I
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in
SERIAL
All after
All after
Alpine
5
I
NUMBER
A26246, B, C, D
A221 07, B, C, D
Board
78 ~
9127196
I-.-.-.-*-.-.-*_*-.-*-.-.
Q
Q
ipiai-y----F-*-y
ilNICI(
8
II
-i-8
Xi
Ip
~
MODEL
KM-450 MRB
~
J
-.-.-.-.-‘,
Q
I-‘-‘-.-,
;-mm:
i
i
SERIAL NUMBER
All after A10182, B, C, D
Alpine Board
2
-.-_- -.-.*mcmur~~~-;
0
..-.
...-_
.-
4
79 ~
I
I
9127196
E
K
80 ~
g/27/96
KM-631 DU, DWU
No serial number break available.
If 9 pin connector has DBU jumper use this diagram. If not,
use diagram M.
“A” Board
,--------I
i=
~
L
81 ~
g/27/96
KM-631 DSU
No serial number break available.
If 9 pin connector has DBU jumper use this diagram. If not,
use diagram N.
“A” Board
~
M
82 ~
g/27/96
KM-631 DU, DWU
No serial number break available.
If 9 pin connector has no DBU jumper use this diagram. If it
does, use diagram K.
“B” Board
~
N
83 ~
g/27/96
KM-631 DSU
No serial number break available.
If 9 pin connector has no DBU jumper use this diagram. If it
does, use diagram L.
“B” Board
~
MODEL
KM-632 DU, DWU
KM-630 MAB
KM-630 MWB
KM-800 MAB
KM-800 MWB
NOTE:
0
SERIAL NUMBER
All units produced
All J, K, A up to A23851
All J, K, A up to Al 1501
All J, K, A up to A21 181
All J, K, A up to A20731
“C” Board
84 ~
9127196
KM-632D does not have protect relay. Hi-Pressure
switch and control switch are located at “X”.
KM-800 MWB has compressor cooling fan
~
P
SERIAL NUMBER
ALL
ALL J,K, A up to A12201
All J, K, A up to A20806
“C” Board
85 ~
KM-632 DSU does not have protect relay
MODEL
KM-632 DSU
KM-630 MRB
KM-800 MRB
NOTE:
~
g/27/96
i
t
:,
Oi
-.-.
i
.
I
L,,P,ii
.
i35yr)i
i
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ALL
ALL
ALL
ALL
cooling fan
SERIAL NUMBER
ALL after A 23852,
ALL after A 11502,
ALL after A 21182,
ALL after A 20732,
Alpine Board
._._.
52
e
m-------3p.---.-, ,
i4N”i
&di
i
i
86 ~
,--.,
KM-800 has compressor
MODEL
KM-630 MAB
KM-630 MWB
KM-800 MWB
KM-800 MWB
NOTE:
i
i .-.-1-.-.
13
i
P
E
i
E
~
B,
B,
B,
B,
C,
C,
C,
C,
D
D
D
D
g/27/96
R
*
-.-.-
.-.-‘,
m e-l
52
r’-‘-‘-,
;
i
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i
9127196
cooling
SERIAL NUMBER
ALL after A12202, ALL B, C, D
ALL after A 20807, ALL B, C, D
Alpine Board
87 ~
KM-800 MRB does not have compressor
fan
MODEL
KM-630 MRB
KM-800 MRB
NOTE:
~
a
3
S
KM-1201 DU, DSU
No serial number break available.
If 9 pin connector has DBU jumper use this diagram.
If not use diagram U.
“A” Board
g/27/96
KM-l 201 DSU
No serial number break available.
If 9 pin connector has DBU jumper use this diagram.
If not use diagram V.
“A” Board
g/27/96
U
KM-1201 DU, DWU
No serial number break available.
If 9 pin connector does not have DBU jumper use this
diagram.
If it does use diagram S.
“B” Board
W
9127196
V
KM-l 201 DSU
No serial number break available.
If 9 pin connector does not have DBU jumper use this
diagram.
If it does use diagram T.
“B” Board
g/27/96
MODEL
KM-l 200MAB
KM-1200 MWB
KM-l 200 SAB
KM-l 200 SWB
NOTE:
W
SERIAL NUMBER
ALL J, K, A up to A 20981
All J, K, A up to A 10679
ALL K, A, up to A 20431
ALL, K, A up to 10381
“C” Board
i
Early MAB, MWB had 3rd hot gas valve operated
by a Hi-Pressure switch and no line valve.
SAB, SWB has 1 hot gas valve and 1 fan motor
5
0,
.l..'-.-.
X
SERIAL NUMBER
ALL after A 20982,
ALL after A 10680,
ALL after A 20432,
ALL after A 10382,
Alpine Board
!2
r--.-.-,
;-NC-J;
O*
: ::7'_
i
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.-.
.-.
-.-
93 ~
4
-.-.-.-.-
-.-ernN
ALL
ALL
ALL
ALL
-.-
----,#-.-.-.-,
~;i-^1c3
B,
B,
B,
B,
!
I
-._._. I
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i
C,
C,
C,
C,
D
D
D
D
4
S
A
QD
0
9127196
z
m
SAB, SWB has 1 hot gas valve and 1 fan motor.
MWB has no fan motor.
MODEL
KM-l 200MAB
KM-1200 MWB
KM-l 200 SAB
KM-1200 SWB
NOTE:
i--
32
,-.-.-.y
;-cum;
~.~.~_~_~_~___-___~_~.~.~.~.
I
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; g!/
i.-.-.-.-.
~
MODEL
KM-1200MRB
KM-l 200 SRB
NOTE:
Y
SERIAL NUMBER
ALLJ,K,AuptoA12196
ALL K, A, up to A 11381
“C” Board
94 ~
r-7
I
1
4:
F
Ei
7
!i
9127196
J
Early MRB had 3rd hot gas valve operated by a HiPressure switch and no line valve.
SRB has 1 hot gas valve and 1 fan motor
---
~
i
- -3
.-.-.-.
i
z
x”
_ f f -‘-‘-‘-‘-.-.-.-.-.,r
95 ~
5-4
.-.-,
I
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g/27/96
SERIAL NUMBER
ALL after A 12197, ALL B, C, D
ALL after A 11382, ALL B, C, D
Alpine Board
- -P_i i
._,-.
8 r.-M
_.-,i,
I--.-.-I ;-c-4-i
i~“Wi
MODEL
KM-1200MRB
KM-l 200 SRB
.-.-.
~
0
Qo
N
P-J
5
0
I
00
MODEL
KM- 1600 MWB, MRB
KM- 1600 SWB, SRB
~
AA
~
SERIAL NUMBER
All units produced
All Units produced
Alpine Board
96
9127196
97 ~
SERIAL NUMBER
All units produced
All Units produced
Board
BB
MODEL
KM-1600 MWB3, MRB3
KM-1600 SWB3, SRB3
Alpine
~
9127196
cc
98 ~
--------‘7
I
SERIAL NUMBER
MODEL
All Units produced
KM-2000 SWB3, SRB3
Alpine Board
r”.~“-.‘.“-‘-‘-.-.~~-.-.-.-.-.-.-.-.-.-.~~-.-.-.-.~.-.-.-.~-.
I
~
9127196
FLAKEFUDCM
INSTALLATION
- GENERAL
Three things are critical for a proper F/DCM installation:
should fall within the 45” F
1. The water temperature
to 90” F range.
Colder water can cause excess stress on the auger
gear motor which may activate the gear motor
overload.
2. A filter system is very important in poor water
quality areas as high mineral content can cause
premature bearing wear.
3. The unit should be level, front to back, side to side
to assure proper evaporator water level and
maximum production.
COMPONENTTECHNICAL
DATA
GEAR MOTOR SAFETIES
The auger gear motor circuit includes two overload
safeties. The primary safety is a manual reset, current type
protector located in the control box. This is a time delay
protector which operates at .9 amp over the normal gear
motor amp draw. The secondary safety is a thermal
protector which is incorporated into the gear motor
windings.
AUGER BEARINGS
-
Bearing Type: Sleeve/Alignment
Bearing Material: Poly/Carbon
The bearings are pressed into the (top) extruding head and
(lower) brass housing. A repress program is available
through the local Hoshizaki Distributor.
~
99 ~
g/27/96
BEARING INSPECTIONS
Annual bearing inspections are recommended. More
frequent inspections may be necessary in poor water
quality areas.
The steps for bearing inspections are as follows:
(1 1 Gain access to the ice chute head by removing the top
panel and spout connectors as necessary.
(2) Remove the thumbnuts which hold the ice chute head
in place and lift it up and off of the evaporator (take care to
place the O-ring in a safe location until you replace the
head.)
(3) Remove the stainless steel bolt holding the cutter or
breaker in place and lift off to access the extruding head
and auger shaft.
(4) Replace the bolt into the auger shaft and use it to push
the auger back and forth from left to right to check for
excessive movement.
(5) Pull the auger towards you and try to insert a .02” round
stock or pin gauge in between the back side of the auger
shaft and bearing surface. Check several locations around
the auger shaft. If the gauge will go in between the shaft
and bearing, it is time to install new bearings. Both top and
bottom bearings should be replaced if the top bearing is
worn. If there is no excessive movement in the auger shaft
and the gauge does not fit, the bearings are okay. Replace
the cutter, O-ring, ice chute head and connectors.
AUGER INSPECTION / BEARING
REPLACEMENT
A visual inspection of the auger bearing shaft surface is
also recommended annually in poor water areas. The steps
for this inspection is as follows:
(1) Follow steps 1 through 5 of the bearing inspection
procedure above.
(2) Remove the (metric) Allen head cap screws that secure
the extruding head in place.
~
100 ~
g/27/96
(3) Thoroughly
drain the water supply system.
4) Turn the cutter up-side down, replace the bolt and use
the cutter to lift the auger out of the evaporator. If heavy
scale is present the auger may be difficult to remove. In
this case, you will find it helpful to clean the evaporator
system following the instructions located on the Inside front
panel, before you attempt to remove the auger.
The DCM units have a key welded on the inside of the
evaporator cylinder. The auger has a key slot cut into the
spiral flite. This keyway slot must align with the evaporator
key before you can lift out the auger. Before attempting to
remove the auger, remove the extruding head and look
inside the cylinder to align the slot and key while turning
the auger.
(5) With the auger removed, remove the cutter and slide
the extruding head from the top of the auger. Visually
inspect the bearing surface at the top and bottom of the
auger. Also inspect the auger flight and mechanical seal for
any damage.
The extruding head contains the top bearing, the bottom
bearing is pressed into the brass housing at the bottom of
the evaporator. To remove the housing:
(6) Remove the Allen screws that secure the evaporator
the housing.
to
(7) Loosen the belly band screw and lift the evaporator up
and off of the housing. Holding the evaporator up, retighten the belly band. This will hold the evaporator up so
that you can remove the housing.
(8) Remove the bolts that secure the housing to the gear
motor assembly and remove the brass housing. The
mechanical seal ceramic disk and boot are pressed into
the top of the housing. Remove these parts before you
exchange the bearings.
The extruding head and brass housing will be exchanged
for a repressed set at your local distributor. When you
replace the new parts, reverse the order above. Use a light
coat of food grade lubricant around the bottom of the
evaporator and on the o-ring portion of the housing to the
seal o-ring and help keep it in place as you lower the
evaporator. Inspect the mechanical seal thoroughly and
reuse it, if it is in good shape.
~
101 ~
g/27/96
The flaker sequence of operation is accomplished through
a series of timers within the solid state timer board. The
actual timing for each step may vary slightly depending on
the model however the steps should follow this sequence.
With proper voltage and water supplied to the Flaker, and
the Ice switch in the ice position, power is supplied to the
inlet water valve. The unit will not start unless the reservoir
is full and both floats on the dual float switch are closed (in
the up position). This provides low water safety protection
for all Hoshizaki auger systems. The operation is then
turned over to the bin control. If the bin control is closed
and calling for ice, within 10 to 60 seconds (depending on
the model), the gear motor is energized. 60 seconds later,
the compressor and condenser fan motor starts. As the
refrigeration system cools the water in the evaporator, ice
will start to form within 2 to 5 minutes. This depends on
the inlet water temperature and ambient conditions. The
Auger will break the ice away from the evaporator cylinder
and move it upwards and out the extruding head. Ice
production will continue until the bin control is satisfied
(opens).
During normal operation, the dual float switch will energize
a water control relay to operate the inlet water valve. This
maintains a consistent level of water in the water system. If
the water is cut off to the unit, a 90 second timer will shut
down the unit on low water safety. This is accomplished
through a set of contacts on the water control relay.
The shut down process is also a timed sequence.
Approximately 90 seconds after the bin control opens, the
compressor and condenser fan motor will stop. 60
seconds later, the gear motor will stop. This allows for
clearing the evaporator of ice so that the gear motor will restart under a no load condition. The unit then sets idle,
waiting for ice to move away from the bin control to re-start
the sequence.
~
102 ~
g/27/96
The DCM sequence for the ice making unit is similar to the
Flaker. It has a delay of the compressor at start up and a
delay of the gear motor at shut down. See Flaker
Sequence for details.
The DCM-451 / 450 and 701 / 700 models have a periodic
agitation of the ice in the bin which eliminates ice bridging.
The solid state timer board will start the agitation for .6
seconds every 2 hours. It will also start the agitation for .6
seconds every 10 seconds of accumulated dispensing
time. This shakes the ice enough to prevent it from freezing
together, allowing consistent ice dispensing.
The periodic agitation feature was not included on the first
production of DCM-451 U units up to serial number prefix
“G3” and DCM-701 U units up to serial number prefix “Gl”.
The feature is added in the event of a board failure, by
installing the new replacement kit number SPK870005
which subs for the original timer board.
FLAKEFUDCM
PRODUCTION
CHECK
Checking the production on a F/DCM is a simple process.
To check the production you will need a bucket or pan to
catch the ice and a set of scales to weigh the ice. After the
unit has operated for 10 to 20 minutes, catch the ice
production for 10 full minutes. Weigh the ice to establish
the batch weight. Multiply the batch weight by 144 for the
total production in 24 hours. Some prefer to catch the ice
for 20 minutes and multiply the weight by 72 for a more
realistic production check. It is true that a longer catch is
more accurate, however, it doubles your test time and may
only show a 1 to 2% difference in production.
Performing a production check is an excellent way to prove
proper F/DCM operation.
~
103 ~
g/27/96
WATER AND REFRIGERATION CIRCUIT
DRAWING REFERENCE CHART
MODEL
DRAWING
F-251 B,U ....................................
F-441 U .......................................
F-250B .......................................
F450B ........................................
F-650 MAB, MWB ......................
FIOOO MAB, MWB .....................
F-650 MRB ................................
F-l 000 MRB ..............................
F-l 101 AU, AWU .......................
F-l 100 MAA, MWA....................
F-l 101 ASU ...............................
F-l 100 MRA ..............................
F-2000 MWB, MWB3.. ...............
F-2000 MRB, MRB3 ..................
DCM - 231U ................................
DCM - 241U ................................
DCM - 240B ................................
DCM - 451U ...............................
DCM - 701U ...............................
DCM - 450B ...............................
DCM - 700B ...............................
A ....................
A ....................
B ....................
B ....................
C ....................
C ....................
D ....................
D ....................
E ....................
E ....................
F ....................
F ....................
G ...................
H ....................
I ....................
I ....................
I ....................
J ....................
J ....................
J ....................
J ....................
PAG E
105
105
106
106
107
107
108
108
109
109
110
110
11 1
112
113
113
113
114
114
114
114
NOTE: Some drawings have been combined to represent
more than one model.
~
104 ~
g/27/96
A
F, 251 U, F-251 B
F-441 U
ICE CHUTE
WATER VALVE
r
INLET
DRIER
Note:
=
REFRIGERANT
--.=
WATER CIRCUIT
CIRCUIT
F441 U has a high side pressure switch
g/27/96
F-250B
F-450B
Reservoir
-.-
OJertl0s
/
J
Pan
Waltr
Yallte
Condtn5et
-Water
-
Circuit
Circuit
d--RetrigeIant
-
F-250 and early production F-450 units have a manual
evaportor drain and no high side access valve.
g/27/96
C
F=650MAB, F-650MWB
F-l OOOMAB, F-l OOOMWB
CONTAOL
WATER
VALVE
-
WATER ClReLl i-r
REFRlGERATlON
CIRCUIT
g/27/96
F-650MRB
F-IOOOMRB
CONTROL
WATER
a
----
WATER Cl KU IT
REFRIGEAATION
ClflCUlT
g/27/96
F-IIOIAU, F-IlOlAWU
F-l 100 MAA, F-l 1OOMWA
WATE R
VALVE
GEAR MOTOR
r
.
WATER
REGULATING
VALVE
/-I
WATER
OUTLET
I ’
PRESSURE
CONTROL
~
109 ~
g/27/96
F
F-l 101 ASU
F-l 1OOMRA
DRYER
u
I/
CONDENSING
UNIT
WATER
- ---
CIRCUIT
REFRIGERATION
CIRCUIT
Oil cooler not included on F-l 100 MRA model
~
110 _______
g/27/96
F-2000MWB3,
Waler
F-2000MWB
Control Water
SPOUl
I
i
-Water
-
Circuit
,.,-Refrigerant
-
Circuit
~
111 ~
g/27/96
H
F-2000MRB3
F-2000MRB
\
Condensing
Drain
Pan
Unit
\
Flush\
Wa t e I
Valve
\
Drier
Access
-Water
-
Circuit
-L---Refrigerant
Circuit
~
112 ~
9127196
DCM-231 U, DCM-241 U
DCM=240BAA, DCM240BAB
WATER VALVE
STORAGE
BIN
HEAT-EXCHANGE
WATER CIRCUIT
REFRIGERANT
NOTE:
CIRCUIT
The access valves are to be installed in the model
DCM-240BAB from the Auxiliary Code B-3.
DCM-231 / 241 U has a fusible plug located in the
liquid line and no accesss valves.
~
113 ~
g/27/96
DCM-451 U, DCM-701 U
DCM=450BAA, DCM-700 BAA, DCM-700 BWA
DCM=450BAB, DCM-700 BAB, DCM-700 BWB
WATER
VALVE
ICE EXTRUDING
TO STORAGE
BIN
-
NOTE:
REFRIGERANT
CIRCUIT
The Access Valve - High Side is installed in
models DCM-450 / 700B-B on models
produced after July 1992.
DCM 451 / 701 U units do not have the oil cooler
loop.
~
114 ~
g/27/96
g/27/96
~
I
117 ~
I
I
9127196
~
118 ~
g/27/96
~
119 ~
9127196
I
g/27/96
oonl
MMO
moo
NMM
~
I
123 ~
I
I
g/27/96
9127196
~
125 ~
9127196
~
126 -
g/27/96
~
127 ~
g/27/96
~
.:
128
-
g/27/96
~
I
129 ~
I
I
g/27/96
.:
g/27/96
5
.-2
n
.-P
.-L
3
a
a
m
31 ~
0
n
W
W
LL
g/27/96
L
3
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g/27/96
A
DCM-231 U, DCM-241 U
DCM=240BAA, BAB
SINGLE
PHASE
115/l
20V AC 60 Hz
Sl
Power
Swtch
315757-01
g/27/96
B
DCM-451 U
LINE
L‘7’
I
’I I \ ‘I 1HI,,-..-J WATiiTCH
I I
1
V
319462-OlA
~
134
~
g/27/96
C
DCM-450 BAA, BWA
’ m
f
~
135 ~
g/27/96
D
DCM - 450 BAB, BWB
VlRlNG DlAGRl
WIRE COLOR C
BR -BROWN
W -WHITE
BK -BLACK
R -RED
gy :;;::G”
P -PINK
DBU-DARK BLUE
LBU-LIGHT BLUE
V -VIOLET
L.-.lD[.UL.-.-x.-.-
.-.-.-
I
DBU
I
-.-.-.-
Q’j’P’C
-.-.-.I
I
I
:3
..-I-.
--.
-1;
..-.-.
r -.
I S4i
c -.-.1
‘1
I
I
I
i
i
I
I
I
_.-.-.-.+KI
23436
i.
BIN CONTROL SWITCH
32615 I-DIA
g/27/96
E
DCM - 701 U
DCM - 700 BAA, BWA
WU & BWA models do not have a condenser
fan motor.
r
-t
K-
319463-01
g/27/96
F
DCM -700 BAB, BWB
BWB model does not have a condenser
fan motor
WIRING
DIACRAY
__
_i
__
ac
_--_
.._._
r’Lp-
____
‘-‘--l
: --,? Bv
K3
~
138 ~
g/27/96
I
1
-
3
Im
-
G
F-251 B
- SW
I
a
g/27/96
H
F-251 U, F250BAA
WIRECOLORCODE
BK-UUCK
RR- RRRWW
ON- DARK BtUE
~K-CKEEN
UU-LIEIT
BLUE
0 --ORME
ME
LIME
---------1-m
w
~-VIOLET
PROTECTOR
b
4
(UK)
J
--
LUU
11
317099-01
F-250 BAA Gear Motor capacitor
B
is IOMFD.
9127196
I
F-441 U, F-440BAA
nwcllwcm
#-ma
r-fm
#a
R4l
m-urn 111 V-VIM
-----me------
F-441 U does not have a power supply protect relay and
thermal protector is internal to gear motor windings.
g/27/96
J
F-450 BAB, BWB
C..-..-..-..-..-..-..-..-..-..-..-..-..-..-..-..~
ONLYAIR COOLED
MODEL
I
i@:i
i@ii
.I-Ii .
I
I
I
PRESSURE
SWITCH
GY
. R
BKn*BLACK
BR**BRCMN
DBU.DARK
BLUE
GY..GRAY
LBUvLIGHTBLUE
O..sORANGE
P.=sPINK
R**mRED
V***VIOLET
W..*WHITE
Y***YELLOW
324312-018
~
142 ~
g/27/96
K
F=650MAB, MWB
P
DBU
jr ,d-ycT
A UJMUJ
..^. "- ..,.--*
WUCL
ON WATERCWLGU
PROVITED.-..-..-..-..-..-..-..-..~,
-, . . . . .^-^. ..-... . .. . ...-..-.
...s...""~
I-AQ
I
; GEAR
!W'OR
1 RELAY
.V
: v
-.-.J,
(1
I%!!
WATERCONTROL
&q)
; ! LBu
LBul
BIh' CONTROLSWITCH
R
BK. +BLACK
BR..ElRCMN
DBU*DARKBLUE
GY--GRAY
LBU-LIGHT BLUE
O***ORANGE
P*.*PINK
R.*,RED
V***VIOLET
W-- *WHITE
Y...YELLOW
216312-0lA
g/27/96
L
F-IOOOMAB, MWB, MRB
208-230/50/l
(3 WIRE
WITHNEUTRAL
FOR 115W
BKa.BLACK
BR**BROlM
DBU.DARK BLUE
O*~*oRANGE
P***PINK
R.--RED
CCMP.
TRANS
-.-.-.’
(R
FUSE
_
=+'IA
12ov
0 -=(O)
1-1
BKtm?-?!??@K)
24v
1
1
LBU
1
P
.._..-.._.._..* A..- -..-..- .-..-..-,
1 CONDENSER FAN MOTOR
I
10
I
.__________._-..-..-..-..-..~..~..“, :
CCMP. COOLING FAN WTOR
t 1: 1
_.._.._..
-..-..
-..-..
CONDENSER FAN MOTOR OF REWTE AIR-COOLED
~
NOT PROVIDED ON WATER-COOLED MODEL
PROVIDED ON REMOTE AIR-COOLED MODEL ONLY
WODEL IS LOCATED IN REMOTE CONDENSER UNIT.
144 ~
21301kOlB
9127196
F-l 101 AU, AWU, ASU
Early Production
I
230 VAC/60 l-W1 phede
H
%
s, - Power swkh
S -9inCorW
FS - Fbat Switch
x3 - Relay
x4,- ReW
X -Relay
ThtlW
WV-waterwve
SR - starling Rshy
SC, - starting capecitff
SC2 * stalling cqechr
RC - Rwr*
Capacitor
FM -Fan boor
FM4 - Fan Mdor
H - Heater
CM-ComprGM * Gear Motor
OL, - ovw
(CM)
OL, - Protedor (GM)
OS - Proteclcr (Merit
Cl - Capeciror (GM)
cp - capee&cf my
F + Fuse (IA)
PS - Pressure Switch
TH-spnJlcofltrol
PB - Resd Stich
KX-KeqReley
TR - Tmnst-
&al
resd)
L
I
QO
0
X4
TM
‘DBu
F-l 101 AU does not have FM1
F-l 101 AWU does not have FM1 or FM2
~
145 ~
g/27/96
N
F-l 101 AU, AWU, ASU
Later Production
WIRE CUR
CODE
F-l 101 AU does not have FM1
F-l 101 AWU does not have FM1 or FM2
~
146 ~
g/27/96
0
F-1100 MAA, MRA
DBU-DARK
BLUE
LBU-LIEHT
BLUE
324880-01
B
~
147 ~
9127196
P
F-l 100 MWA
236240/60/l
OBU-BARNBLUE
LBU-LIGHTBLUE
324881-016
_----------e-e
PBWER
3wlTCH
I
g/27/96
Q
F=2000MWB, MRB
208-230/60/l (3WIREWITH NEUTRALFOR115V)
L2 L1 NEUT.
O* * *ORANGE
BK**BLACK
P-**PINK
BR**BROWN
DBU-DARK
BLUE R.--RED
'f-m-VIOLBT
GY* *GRAY
LBU*LICHTBLUE W+*.WHITE
I
CIRCUIT
THERMAL GEARMOTOR
V
W
AIR-COOLED
MODELONLY
IN REMOTE
CONDENSER
...
CRANKCASE
HEATER "
SPOUTINDICATOR/r;\
BIN CONTROL
r-l
V
- RECTIFIER 0
,
I
CONTROL
T
LBU
321255-014
g/27/96
F-2000 MWB3, MRB3
208-230/60/3
BK**BLACK
BR*sBROWN
DBU*DARK
BLUE
GY* *GRAY
LBU.LIGHTBLUE
I,
,
BR- 1
I
PROVITED
BY REMOTE -'
AIR-COOLED
MODEL
ONLY
CONDENSER
IN REMOTE
SPOUTINCICATORfi
YJ
GY
BR POWER
SWITCH
0)
ZTRANSFORMER
FUSEc,ti
CRANKCASE
HEATER
BIN CONTROL
CONTROL
T
BR
SPOUTCONTROL
RELAY: 6
g/27/96
R
~
151 ~
g/27/96
~
152 ~
g/27/96