8
Trouble shooting
8.1
Cleaning system/separator does not start or stops
shortly after start
Possible cause
Action
No power supplied
Check the mains switch, fuses and supply line
Bowl hood interlock is not in correct position Position the interlock correctly
Defective magnetic switch indicating the
position of the bowl hood interlock
Check that the switch opens and closes when
interlock is moved up and down
Incorrect assembly after cleaning. The bowl
and motor shaft cannot rotate freely
Dismantle and check
Voltage protection for frequency control
trips because of too low/high voltage or
voltage spikes greater than ±5 %.
Check the voltage. If unstable voltage, connect
a transformer.
Separator stops
See
8.4 Separator stops on page 38
.
Pump stops
See
8.2
Pump does not start
Possible cause
Action
Microswitch for filled collecting tank
activated
Empty the tank or adjust the spring tension for
the tank support
8.3
Pump stops
Possible cause
Action
Collecting tank filled
Empty the tank and start the pump
Overload caused by clogged strainer
Clean the strainer. The motor protector in
control unit is automatically reset
Counter pressure at separator outlet is
lower than 50 kPa
•
Check that suction inlet is not above
surface in tank
•
Check for obstructed inlet line
•
Check function of regulating valve
•
Adjust the counter pressure. See chapter
•
Check the direction of rotation for separator
and pump
Overload caused by obstructed inlet or
outlet side
Check that the feed through the whole system
is sufficient
37
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 ...