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English (US)
7.2 Cleaning the pump
If the pump does not deliver a sufficient quantity of
water because of sediment, dismantle and clean the
pump.
7.2.1 Cleaning the inlet strainer
1. Disconnect the power supply to the pump.
2. Drain the pump.
3. Loosen the inlet strainer by inserting a
screwdriver in the recess between the pump
housing and the strainer.
4. Use the screwdriver to push apart the outer
housing and the strainer. Repeat the procedure,
working around the pump, until the strainer is
free and can be removed.
5. Clean and refit the inlet strainer.
Cleaning the impeller
1. Disconnect the power supply to the pump.
2. Drain the pump.
3. Loosen the inlet strainer by inserting a
screwdriver in the recess between the pump
housing and the strainer,
4. Use the screwdriver to push apart the outer
housing and the strainer. Repeat the procedure,
working around the pump, until the strainer is
free and can be removed.
5. Remove the strainer and the bottom part of the
pump housing as shown in fig.
Fig. 17
Removal of the strainer and the bottom
part of the pump housing
6. Remove and clean the diaphragm.
7. Clean and flush the pump with clean water to
remove possible impurities between the motor
and the pump housing. Clean the impeller.
8. Check that the impeller can rotate freely.
9. Assemble the pump in reverse order of
dismantling.
7.3 Service kits
The impeller assembly and power cable can be
replaced. The part numbers and the components
included in the service kits are found in Grundfos
Product Center at www.grundfos.us. Alternatively,
contact your local Grundfos dealer or service center.
7.4 Contaminated pumps
Any application for service, no matter to whom it may
be made, must include details about the pumped
liquid.
The product 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 product,
contact Grundfos with details about the pumped
liquid before returning the product for service.
Otherwise Grundfos can refuse to accept the product
for service.
Any application for service must include details
about the pumped liquid.
Clean the product in the best possible way before
you return it.
Costs of returning the product are to be paid by the
customer.
T
M
03
1
112
10
05
The cable and the float switch must
be replaced by a service workshop
authorized by Grundfos.
CAUTION
Biological hazard
Minor or moderate personal injury
- Flush the pump thoroughly with
clean water and rinse the pump
parts in water after dismantling.
