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5.0 Troubleshooting (continued)
Problem
Pump has seized
Pump
motor
draws
amperage or pump starts but
labors
Smoke/Oil Mist (emitted) from
exhaust (port)
Lubricated Rotary Vane Laboratory Vacuum Systems
Possible Causes
Pump operated without enough oil
Liquid ingested into pump
Process vapor condensed inside pump
Pump operated in the wrong direction
for an extended period of time
high
Pump operating in the wrong direction Make sure pump is operating in the proper di-
Ambient temperature too low for the
recommended oil
The exhaust oil filter may be clogged
Pump is overfilled with oil
Oil tank has contaminated oil, or was
filled with an incorrect type of oil
Loose
wiring
connection
electrical circuit
Electrical circuit is not properly sized to
handle load
Damaged motor
Worn bearing
Process vapor condensing inside pump Stop pump, change oil and install protective
Pump is overfilled with oil
Exhaust filters not correctly seated or
installed
Pump operated at vacuum levels
outside the recommended range on a
continuous basis
Solution
Call the factory for assistance. Have pump
model and serial number available.
NOTE: If liquid is found to have been ingested
or if process vapor is condensing inside the
pump, protective measures must be taken. In-
stall trap or filter device on inlet of pump to
remove the contaminate from the air stream.
Call the factory for assistance. Have pump
model and serial number available.
rection. See rotation arrow on the pump.
Multi-weight non-detergent oil may be re-
quired. Contact the factory for assistance.
This can be checked by measuring the amount
of pressure between the exhaust side of the
pump cylinder and the exhaust oil separator(s).
The separator element(s) must be replaced
if this pressure is near 0.7 bar or greater (ap-
proximately 10 psig).
Adjust oil level to proper setting or replace oil
with the correct type. Refer to Section 6.2 for
the correct oil type.
in
the
Check all connections and tighten or replace as
required.
Wiring sized too small will create a voltage
drop large enough to produce over amperage
of motor. Check line voltage for unusually low
supply voltage.
Consult a qualified electrician for further diag-
nosis.
Call the factory for replacement. Please have
the pump model and serial number available.
devices on inlet of pump to prevent recur-
rence.
Adjust oil level to proper setting as recom-
mended in Section 3.2.
Check filters.
Consult factory for assistance.
5-4
4107 9021 88.01
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