
P.43
PM10U
EBARA
CORPORATION
8. TROUBLESHOOTING
DANGER
Turn off the main switch on the pump and disconnect power cable before servicing. Do not
supply power before completion of service work.
WARNING
Wiring work must be done by qualified workers.
Pump remains hot during and/or after operation. Avoid direct skin contact otherwise it may
cause burn. Keep combustible materials away from the product. Do not attempt to service
the product when it is hot.
Do not remove packaging covers during operation.
8.1 Primary Trouble
Symptoms
Probable Causes
Corrective measures
The power isn't supplied to the pump.
Check if the power is supplied to the
pump.
Pump error
Pump replacement or overhaul is needed.
PUMP does not start
The driving connector doesn’t install on
the I/O connector (CN2)
When “Direct power input” is selected, set
driving connector onto “I/O connector
(CN2)”.
Some objects on the outside cover.
Take the objects away.
Vises to fix the outside cover are
loosened.
Tighten the vises.
Resonance of flexible tubes for
inlet/exhaust.
Fix the resonant part.
Pump parts damages.
Pump replacement or overhaul is needed.
Cooling fan error
Pump maintenance or parts replacement
is needed.
Abnormal noise.
Intense vibration
Pump error
Pump replacement or overhaul is needed.
Pipe leakage in the fore line.
Check plumbing.
Pump error
Pump exchange or overhaul is needed.
The inside of the pump is dirty.
(
Moisture condensation etc.)
Pump overhaul is needed.
Insufficient Vacuum.
The gas ballast valve is opened.
Close the gas ballast valve.
The capacity of the breaker is small
Use recommended breaker.
Pump error
Pump replacement or overhaul is needed.
Motor error
Motor replacement or overhaul is needed.
Breaker trip
Incompleteness of power supply or wiring
Repair the power supply and wiring.
※
Please contact the business office/branch at the end of the book when the troubles other than listed
above occur.