8 Troubleshooting
Fault Pump does not start up
Cause Wrong or loose connection at motor terminal
Remedy Check the connections
Cause Pump is blocked
Remedy Contact us
Cause Belt is broken
Remedy Contact us
Cause Motor is defective
Remedy Contact us
Cause Wrong supply voltage
Remedy Check the mains power or inverter
Fault Motor protective switch triggers
Cause Pump is blocked
Remedy Contact us
Cause Motor is defective
Remedy Contact us
Cause Wrong setting of protective switch
Remedy
Adjust the setting. Refer to T
echnical data
on page 10.
Cause Wrong direction of rotation
Remedy Check and change the direction of rotation if applicable
Cause Wrong supply voltage
Remedy Check the mains power
Cause Exhaust line is clogged
Remedy Clean the exhaust line
Fault Pump does not reach vacuum performance
Cause Inlet lter is clogged
Remedy Clean the inlet lter (if in use)
Cause Gas leak at the pump inlet
Remedy Check O-ring at inlet port or connections of accessories
Cause Wrong rotational speed
Remedy Check the mains frequency or inverter
300766038_002_C3 - 09/2021 - © Leybold
44
Troubleshooting
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