Cause Remedy
The installation is not receiving
voltage.
Check that:
• The main power switch is on.
• There is control voltage to the start equipment.
• The fuses are intact.
• There is voltage in all phases of the supply line.
• All fuses have power and that they are securely fastened to the fuse
holders.
• The overload protection is not tripped.
• The motor cable is not damaged.
The impeller is stuck. Clean:
• The impeller
• The sump in order to prevent the impeller from clogging again.
If the problem persists, then contact a sales or authorized service representative.
Always state the serial number of the product, see Product Description on page 8.
7.2 The pump does not stop when a level sensor is used
DANGER: Crush Hazard
Moving parts can entangle or crush. Always disconnect and lock out power before
servicing to prevent unexpected startup. Failure to do so could result in death or serious
injury.
Equipment
locked out by
Name .......................
DANGER
Cause Remedy
The pump is unable to empty the
sump to the stop level.
Check that:
• There are no leaks from the piping and/or discharge connection.
• The impeller is not clogged.
• The non-return valve(s) are functioning properly.
• The pump has adequate capacity. For information:
Contact a sales or authorized service representative.
There is a malfunction in the level-
sensing equipment.
• Clean the level regulators.
• Check the functioning of the level regulators.
• Check the contactor and the control circuit.
• Replace all defective items.
The stop level is set too low. Raise the stop level.
If the problem persists, then contact a sales or authorized service representative.
Always state the serial number of the product, see Product Description on page 8.
7 Troubleshooting
32 2008 Ready 8, 8S Installation, Operation, and Maintenance
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