Alfa Laval 881176-09-01/1, Instruction Book

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4 Trouble shooting
4.1 The separator does
not start
Possible cause Action
Safety yoke is not in the correct
position. Position the yoke correctly.
No power supplied to the separator. Check the mains switch, fuses and supply line.
Defective magnetic safety switch
indicating the position of the safety
yoke. Make sure that the switch opens and closes when the safety
yoke is moved up and down. Measure across terminal points
Nos 5 and 6 on the frequency converter board. Replace the
switch if faulty.
Incorrect assembly after cleaning.
The bowl and motor shaft can not
rotate freely. Make sure that the bowl and motor shaft can rotate freely by
turning the bottom end of the motor shaft with a suitable tool.
Incorrect height adjustment of
paring disc after major overhaul. The height adjustment of the
paring disc is measured as
shown in figure. The height A
should be 48,5 ±0,5 mm and
can be adjusted by the
number of washers B (1-3
pcs) under the oil connection
housing.
Defective motor or frequency
converter. Replace motor or frequency converter (located in Control
unit).
G
0
4
1783
1