8
Trouble shooting
8.8
Flow too low
Possible cause
Action
Impeller in pump worn or broken
Replace impeller, See
impeller and mechanical seal for pump on page
55
Counter pressure at outlet too high
Reduce the counter pressure with the regulating
valve (100 - 180 kPa is recommended)
Leakage caused by incorrect assembly
•
The three screws fastening the bowl
hood or the paring disc knob (the upper
part of the separator) are not completely
tightened.
•
Dismantle and check the separator bowl
parts. Especially check that no O-rings are
missing, are defective or incorrectly fitted.
Ensure that the separator is assembled
correctly.
Separator or pump rotates in wrong
direction
Check power supply cables.
8.9
No flow either through clean oil outlet or through
drain to collecting tank
Possible cause
Action
Separator or pump stopped
Check function, see
and
Inlet and outlet hoses for pump wrongly
connected
Interchange the hose connections
Strainer before separator clogged
Clean strainer
Separator disc stack clogged
Clean separator bowl and disc stack
Air leakage on suction side between liquid
tank and pump
Check that the inlet of the suction device is
below surface in tank. Check that couplings are
correctly fitted.
Impeller attachment to nave is loose
Replace impeller, see
The sleeve fastened to the motorshaft for
the pump is loose
Tighten the lock screws, see illustration, pos.
14 & 15 on page
55
40
Summary of Contents for Alfie
Page 6: ......
Page 10: ...2 Application ...
Page 18: ...4 Description of main parts ...
Page 20: ...5 Working principle of the separator ...
Page 30: ...6 Control Cabinet ...
Page 47: ...9 Maintenance Dismantling G04491c1 See comments on opposite page 47 ...
Page 53: ...9 Maintenance G0449671 53 ...
Page 54: ...9 Maintenance G0449681 54 ...
Page 60: ...11 Lifting instruction ...
Page 61: ...12 Diagrams 12 1 Electrical system Alfa Laval ref 9014733 Rev 7 61 ...