Pump Rebuilding Procedure - Fruitland® Manufacturing

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Fruitland RCF 250,RCF 370 & RCF 500 Pump Rebuild Procedure
Drain oil by removing the drain
plug and check for any contamination in
oil.
Remove the four bolts and
aluminum sealing washers that hold the
outer cover to the inner oil reservoir
(large seal housing). When reassembling pump replace sealing
washers if damaged, and the cover
gasket.
Remove the 4 inner oil lines
connected to the oil pump and the top
of the inner oil reservoir. This is done by
removing the 4- 6mm hollow oil bolts
that hold the oil lines to the oil pump
and un-doing the fittings at the top of
the inner oil reservoir.
Remove the oil pump and
gasket by removing the two bolts
holding it to the inner oil reservoir. A
small coupler is connected to the end
of the oil pump that couples the oil
pump drive to a pin in the end of the
rotor shaft. DO NOT MISPLACE THE
COUPLER. It may fall off the end of the
oil pump. If the coupler is damaged or
broken, oil pump failure would be
suspected. The oil pump must be
checked before being re-installed.
324 Leaside Ave, Stoney Creek, Ontario, Canada, L8E 2N7
Toll Free: 1-800-663-9003
www.fruitlandmanufacturing.com
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Data subject to change without notice
FM-RB-2013
Fruitland Manufacturing ®
www.fruitlandmanufacturing.com
To check the oil pump,
connect oil pump drive to a drill
that will turn the oil pump the
same rotation as your vacuum
pump. Immerse the oil pump
pickup in a small container of
clean oil. Run a drill connected to
the oil pump drive for at least a
couple minutes and check to see if
any oil is coming out the 4 oil line
outlets. The oil pump at 1400
RPM only pumps 1 US quart of oil
approximately every 4 hours. You
will only see a drip come out of
each port approximately every 15
seconds. If no oil is noted coming
out any of the 4 ports the oil
pump needs to be replaced.
Disconnect the 4- oil lines
at the top of the inner oil reservoir
and move gently out of the way.
The inner oil reservoir
(large seal housing) can now be
removed by removing the 3 bolts
and lock washers that connect it
to the main housing end cap. Use
a rubber mallet to gently tap on
the reservoir to break the gasket
free.
The large seal housing
contains 2 oil seals that are
installed back to back. They are
held in place with a cir-clip. If the seals are damaged or have gone hard they must be
replaced. If the sealing lip on the seals has gone hard and is cracking, that is an
indication that the vacuum pump has been in an overheated condition for an extended
period of time.
A main roller bearing and 2 bevel springs will be exposed in the main housing end cap as
the large seal housing is being removed. Make a note of the direction of the 2 bevel
springs and do not lose them. They are tapered in a slight cone shape and go back in the
324 Leaside Ave, Stoney Creek, Ontario, Canada, L8E 2N7
Toll Free: 1-800-663-9003
www.fruitlandmanufacturing.com
2
Data subject to change without notice
FM-RB-2013
Fruitland Manufacturing ®
www.fruitlandmanufacturing.com
same direction. (Pointing
out). If unsure, call the toll
free number for clarification.
These bevel springs are a
key factor in keeping the
rotor centered in the
housing between the end
plates. If installed
incorrectly, overheating and
damage to the rotor and
end plates is possible.
Remove the 8 bolts
and washers holding the
housing end cap to the main
pump housing. Make a mark
on the housing and on the
end cap to reference when
re-installing. There is also a
timing bolt hole, with an
extended ear on the end cap
and a more pronounced
machining mark on the
housing gasket surface area,
to locate properly if you lose
or forget to mark. This is
shown in the picture. Tap on
the end cap to break gasket
free. The end cap is now
removable.
Check overall
condition of end cap
especially where rotor end
may have contacted the end
cap. If the rotor has contacted the end cap and caused a deep grove, the end cap will
have to be replaced. This damage can be caused by a severely overheated pump,
incorrectly installed or missing bevel springs or by a load on the rotor forcing the rotor
to be jammed into the end plate. If the pump is driven with a hydraulic motor or angle
gear box with a coupler, the clearance in the coupler must be sufficient enough to allow
the rotor to stay centered in the housing as the vacuum pump expands and contracts
during its heat cycle.
324 Leaside Ave, Stoney Creek, Ontario, Canada, L8E 2N7
Toll Free: 1-800-663-9003
www.fruitlandmanufacturing.com
3
Data subject to change without notice
FM-RB-2013
Fruitland Manufacturing ®
www.fruitlandmanufacturing.com
You will note
that the gasket area on
the end cap has a
recess. When reinstalling end cap back
on the main housing the
recess has to fit inside
the housing bore before
you tighten the bolts. IF
YOU DO NOT do this,
you will most likely
break the housing end
cap where the bolts
mount.
When the
housing end cap is
removed, the rotor will
drop approximately
3/16” due to the weight
of the rotor not being
supported. When reinstalling the end cap,
the rotor will have to be
lifted that amount to
relocate end cap recess
back into housing bore.
Fig. 7
The vanes,
bearing, and rotor are
now accessible when
the main end cap is off.
Remove vanes and
check condition of
vanes, vane slots, and
housing bore.
The rotor should be removed from the pump if the vanes are difficult to remove, if the
bearing or the rotor is damaged, or if there is contamination in the pump. This also
allows inspection of the bearing on the drive end. If a bearing has to be replaced, the
inner bearing race will have to be removed from the rotor shaft with a puller as it is a
324 Leaside Ave, Stoney Creek, Ontario, Canada, L8E 2N7
Toll Free: 1-800-663-9003
www.fruitlandmanufacturing.com
4
Data subject to change without notice
FM-RB-2013
Fruitland Manufacturing ®
www.fruitlandmanufacturing.com
press fit on the rotor shaft.
The collar between the
bearing race and rotor end
face can be re-used if not
damaged.
Check condition of the
housing bore. If pump was
disassembled because of a
broken or damaged vane,
check for housing cracks. The
housing must be replaced if a
crack is detected.
If the housing bore is
in good shape, assembly
procedure can start. New
well-oiled vanes should slide in and out of the rotor slots easily.
Re- install parts in reverse order from disassemble.
324 Leaside Ave, Stoney Creek, Ontario, Canada, L8E 2N7
Toll Free: 1-800-663-9003
www.fruitlandmanufacturing.com
5
Data subject to change without notice
FM-RB-2013
Driven.
By Design
Fruitland™ Rotary Vane Vacuum Pumps are renowned for their reliability, performance and ease of
installation. They require minimal maintenance, use minimal oil and will provide years of reliable service.
Designed to tackle the toughest liquid waste applications including Oil & Gas, Environmental, Industrial,
Septic, Grease and any other Liquid Waste.
Vacuum Pump General Specifications
Features and Benefits include:
•
Integral automated
lubrication system
•
Vane wear check ports
•
Low oil consumption
•
Top or side mount 4-way
valves available
•
Clockwise or counter
clockwise rotation
•
Air cooled
•
Optional air intake filter
•
2 year warranty
•
Belt, hydraulic or angle drives
Type
Free Air Flow
Maximum Vacuum/Pressure
Sizes of Hoses
Maximum Operating Speed
Vanes
Air flow at 18” Hg
Approx. Weight
RCF250
198 CFM
27” Hg/30psi
2“
1400 RPM
4 (kevlar)
150 CFM
255 LBS
RCF370
293 CFM
28.5 Hg/35psi
3”
1400 RPM
8 (kevlar)
259 CFM
385 LBS
RCF500
396 CFM
28.5 Hg/35psi
3“
1400 RPM
8 (kevlar)
320 CFM
450 LBS
RCF800
634 CFM
28.5 Hg/35psi
4”
1000 RPM
8 (kevlar)
400 CFM
1100 LBS
RCF1200
942 CFM
28.5 Hg/35psi
4“
1000 RPM
8 (kevlar)
617 CFM
1400 LBS
Data subject to change without notice
FRUITLAND
Manufacturing
Est. 1957
VACUUM PUMPS
Reliability Redefined™
Toll Free: 1-800-663-9003
905-662-6552
www.fruitlandmanufacturing.com