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8 Troubleshooting
8.1 Troubleshooting (1) Basic Trouble
Abnormal symptom
Check Item Corrective
Action
Incorrect wiring
Check wiring
Ground fault
Replace or overhaul pump
Circuit breaker is activated.
(Leakage detector is on.)
Short circuit
Replace or overhaul pump
No power supply to pump
Check power supply
Connector is not connected
Connect power connector
Power LED does not come
on.
ELB is not mode ON
Switch ELB ON
ELB is not mode ON
Switch ELB ON
Nothing appears on LCD.
Display is abnormal.
Instruments are in failure
Replace instruments
Mode is set in “Remote”
Set switch to “Local” mode
Start-up conditions are not satisfied
(“STARTFAIL” is displayed)
Satisfy all start-up conditions
MP does not start when
pressing START button.
Instruments are in failure
Replace instruments
Mode is set in “Local”
Set switch to “Remote” mode
Mode is set in “Alternate”
(Pump jogs)
Apply “Alternate” start signal
Set to “Momentary” mode
MP does not start when
applying START signal.
Instruments are in failure
Replace instruments
Leakage on vacuum piping
Check piping
MP insufficient vacuum
Replace or overhaul
BP start signal is not applied
Apply BP start signal
BP does not start.
Instrument failure
Replace instruments
Adjuster foot is not lowered
Properly set all adjuster feet
Cover is in contact with other items
Remove objects from cover
Cover screws loose
Tighten mounting screws
Abnormal noise.
Excessive vibration.
Pump part is damaged
Replace or overhaul pump
Byproducts settled in piping
Clean up piping
N
2
pressure setting is high
Set pressure for correct value
Leakage from vacuum piping
Check piping
Vacuum pressure increase.
Byproducts settled in pump
Replace or overhaul pump
WARNING
Interrupt Earth Leakage Breaker (ELB) or CB and lock out power
before starting on wiring and maintenance work.
Do not switch on the power supply to the pump until work is
completed.
WARNING
The pump casing and exhaust piping become extremely hot during
operation and for some time after stopping.
Keep pump and exhaust piping away from contact with personnel and
flammable substances.
Do not remove the pump cover during operation.
WARNING
Check for gas leaks after installing and maintaining the piping.
Gas leaks will result in the discharge of harmful and dangerous
substances and in abnormal reactions due to the admission of air into
the pump
EBARA
Corporation
Summary of Contents for A70W
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Page 21: ...7 EBARA Corporation Outline Drawing A70W...
Page 22: ...8 Outline Drawing A30W EBARA Corporation...
Page 23: ...9 EBARA Corporation Outline Drawing A25S...
Page 24: ...10 EBARA Corporation Outline Drawing A10S...
Page 25: ...11 EBARA Corporation Outline Drawing A07V...
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Page 63: ...III Label Country US Label Emergency Number 716 293 3330 EBARA Corporation...