33
Trouble
Cause
Procedure
Note
⑧Leakage from the tube
connection with the pump
⑨Applying no specified oil
⑩No circulating oil.
Clogging the oil aperture of
the pump cover
⑧Detect leakage by the leak
detector, and stop leakage
⑨Charge specified oil after
overhauling or repairing
⑩Overhauling and repairing,
clean the oil aperture
6.3
Unusual sound
①Abnormal input voltage
②Inferior motor
③Coming different objects
into the pump
④Insufficient quantity of
the oil
⑤The coupling malfunctions.
⑥No circulating oil.
Clogging oil aperture of the
pump cover
⑦Internal parts damaged
①Adjust input voltage within
±10%
②Replace motor
③Eliminate different objects
then overhaul and repair the
pump
④Fill the oil up to the
specified quantity
⑤Replace the coupling
⑥Overhauling and repairing,
clean the oil aperture
⑦Overhauling and repairing
(Replace parts)
3.5
3.2
6.4
Abnormal high
temperature on the
pump surface
R.T > +50 ℃
①Continuous operating at
high suction pressure
②Insufficient quantity of
the oil (Oil shortage, low
cooling effect)
③High temperature evacuating
gases
④No circulating oil.
Clogging the oil aperture of
the pump cover
①Temperature of the pump
surface will be 80℃ during
continuous operation, but
no problem happened
②Fill the oil up to the
specified quantity
③Set the gas cooling unit on
suction side
④Overhauling and repairing,
clean the pump aperture
3.2
Oil spouting from
exhaust port
①Too sufficient oil quantity
for the specified level
②Continuous operating at
high suction pressure
①Drain the oil to the
specified level
②Set oil mist-trap on exhaust
side
3.2
4.6
Oil leak out of the
pump
①O-rings or oil seals of the
case or the cover
①Inspect and replace o-ring
or oil seals
6.2
