Operation
4990671000 February 2008
27
6.5
Troubleshooting
The following table can be used for fault diagnosis.
All failures should be repaired without delay.
The machine should not be started until the fail-
ure has been repaired.
Repairs must only be carried out by qualified
technical personnel.
Possible cause
Remedy
Poor pump output
•
Vacuum filter soiled
•
Suction line leaking
•
Instrument leaking
•
Underspeed
•
Lack of operating water
•
High operating water feed temperature
•
Clean vacuum filter
•
Locate and repair leak
•
Replace leaking instrument
•
Run at prescribed speed
•
Top up operating water to maximum level
•
Inspect the operating water cooling system
Abnormal noise
1)
•
Poor machine alignment
•
Bearings worn
•
Operating water grossly contaminated
•
Incorrect speed
•
Pressure has changed
•
Vacuum has changed (higher vacuum needed)
•
Vent line blocked
•
Operating water temperature high
•
Foreign object in the machine
•
Re-align machine
•
Replace bearings or have them repaired
•
Change the operating water
•
Keep within speed limit
•
Keep within rated pressure
•
Keep within rated vacuum / inspect, clean exhaust air
system
•
Inspect and/or clean vent line
•
Inspect the operating water cooling system
•
Remove foreign object immediately and flush the
machine
Operating pressure or operating vacuum cannot be obtained
•
Incorrect pressure gauge or vacuum gauge reading
•
Vee belt slip
•
Directional control valve at wrong position
•
Operating water feed disturbed (not enough or no water)
•
Replace pressure gauge / vacuum gauge
•
Inspect Vee belt tension, re-tension if necessary
•
Set directional control valve to correct position
•
Ensure sufficient operating water supply
Operating water temperature high (above 55 °C)
•
Not enough water in the operating system
•
Cooling unit soiled
•
Top up operating water & recirculate water until water
temperature is less than
55°C
.
•
Clean cooling unit
Sludge or liquid has entered the machine
•
Vehicle oversucking
•
Clean the machine; check the operating water, change if
necessary
High power consumption
•
Overspeed
•
Exceedingly high output pressure
•
Pressure gauge reading wrong
•
Keep within speed limit
•
Keep within rated pressure, actuate/check safety valve
•
Replace pressure gauge
