5
Technical Description
Troubleshooting and Corrective Action
132/140 Dual Stage Rotary Vane Pumps User Manual/ 87-900-937-01(L)
SYMPTOM PROBABLE CAUSE SUGGESTED REMEDY CARD REF.
F) Insufficient oil
pressure in the
lubricating circuit,
preventing the anti-
suckback device from
opening.
Inspect the gears of the oil
pump and check that it is
working.
107
G) Internal moving parts
worn.
Disassemble the pump, and
replace any worn parts.
111
H) Pump working with
gas ballast device open.
Close the gas ballast device.
I) Anti-suckback valve
fails to open.
Disassemble the suction
flange and check the device.
104
108
J) Parts of the functional
block not in perfect
contact because of
deposits of dirt or failure
to put a plug on the
service holes.
Disassemble and check
condition of the part surfaces
and that plugs have been
used.
111
K) The cause of the
problem is not with the
pump.
See “Note”.
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