Troubleshooting; Primary Trouble - EBARA EV-A03 Instruction Manual

Turn off the main switch on the pump and disconnect power cable before servicing. Do not
supply power before completion of service work.
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
PUMP does not start
Abnormal noise.
Intense vibration
Insufficient Vacuum.
Breaker trip
※Please contact the business office/branch at the end of the book when the troubles other than listed
above occur.
PM10U

8. TROUBLESHOOTING

DANGER
WARNING
Probable Causes
The power isn't supplied to the pump.
Pump error
The driving connector doesn't install on
the I/O connector (CN2)
Some objects on the outside cover.
Vises to fix the outside cover are
loosened.
Resonance of flexible tubes for
inlet/exhaust.
Pump parts damages.
Cooling fan error
Pump error
Pipe leakage in the fore line.
Pump error
The inside of the pump is dirty.
(
Moisture condensation etc.)
The gas ballast valve is opened.
The capacity of the breaker is small
Pump error
Motor error
Incompleteness of power supply or wiring
Corrective measures
Check if the power is supplied to the
pump.
Pump replacement or overhaul is needed.
When "Direct power input" is selected, set
driving connector onto "I/O connector
(CN2)".
Take the objects away.
Tighten the vises.
Fix the resonant part.
Pump replacement or overhaul is needed.
Pump maintenance or parts replacement
is needed.
Pump replacement or overhaul is needed.
Check plumbing.
Pump exchange or overhaul is needed.
Pump overhaul is needed.
Close the gas ballast valve.
Use recommended breaker.
Pump replacement or overhaul is needed.
Motor replacement or overhaul is needed.
Repair the power supply and wiring.
EBARA
P.43
CORPORATION