English (GB)
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9.2.4 Checking the stator housing
If there is water in the stator housing, the cause may
be as follows:
•
An O-ring is damaged.
•
The cable entry is leaking.
If there is oil in the stator housing, the cause may be
as follows:
•
The inner seal is damaged.
•
An O-ring is damaged.
9.2.5 Checking the cable entry
•
Check that the cable clamps are tight.
•
Check that the cable entry is tight.
•
Cut off of a piece of the cable so that the rubber
bush closes around a new position on the cable.
Always use new rubber bushings when
reassembling the cable inlet.
•
Check that the rubber bushings and the washers
correspond to the outside diameter of the cables.
•
Make sure there is no slack in the cable
suspension, and that the cables are fixed to the
cable suspension and are unable to swing during
operation.
In case the outer sheath is damaged, replace the
cable.
9.2.6 Checking the insulation resistance
IO 113 measures the insulation resistance between a
stator winding and earth.
•
The resistance is above 10 MΩ: OK.
•
The resistance is 1 to 10 MΩ: warning.
•
The resistance is below 1 MΩ: alarm.
Use an insulation resistance tester set to 1000 VDC.
Check the phase-to-phase and phase-to-earth
resistance. The test result must be over 100 MΩ.
9.3 Spare parts
Always replace damaged motor parts with new and
approved parts. Motor parts must not be
reconditioned by machining, re-tapping, welding, etc.
More information about service and spare parts can
be found via www.grundfos.com.
9.4 Contaminated pumps
The pump will be classified as contaminated if it has
been used for a liquid which is injurious to health or
toxic.
If you request Grundfos to service the pump, contact
Grundfos with details about the pumped liquid before
returning the pump for service. Otherwise, Grundfos
can refuse to accept the product for service.
Any application for service must include details
about the liquid.
Clean the pump thoroughly before returning it.
Costs of returning the pump are paid by the
customer.
CAUTION
Biological hazard
Minor or moderate personal injury
- Flush the pump thoroughly with clean
water and rinse the pump parts in water
after dismantling.
