Troubleshooting
39
GA01423_002_C0 - 10/2016 - © Leybold
6 Troubleshooting
If the pump malfunctions, please refer to the following chart for help in solving
the problems. If you cannot solve the problem, please contact Leybold.
Fault
Possible cause
Remedy
Pump does not rotate.
Breaker malfunction.
Inspect and repair.
Wiring becomes loose or cut.
Repair or replace.
Voltage drops.
Check length and size of cable.
Motor malfunctions.
Inspect and repair.
Pump malfunctions.
Inspect and repair.
SC 5 D only
Switch is turned OFF.
Turn switch ON.
SC 5 D only
ON-OFF switch is damaged.
Replace.
Thermal protector trips.
Inspect connection
Inspect voltage.
Inspect and repair.
Ultimate pressure is insufficient.
Air leaks for pumping.
Check tightness of piping.
Moisture or solvent has condensed
Open inlet to atmosphere and operate
in pump.
for a few minutes and then operate for
about 24 hours with the inlet closed.
Install a trap or a filter to prevent water
and solvent from entering the pump.
O-ring is damaged.
Replace.
Purge gas valve port is clogged.
Clean silencer. - Replace
Abnormal sound, vibration.
Connections loose.
Tighten connections.
The pump is not level.
Level the pump.
Foreign matter enters inside of Pump.
Inspect and clean.
Failure of exhaust valve.
Inspect and replace.
Failure of motor.
Inspect and replace.
Failure of pump.
Inspect and change resp. replace.
