Servicing The Product; Maintaining The Product - Grundfos UNILIFT AP35B Installation And Operating Instructions Manual

6. Servicing the product

DANGER
Electric shock
Death or serious personal injury
‐
Switch off the power supply before
starting any work on the product.
‐
Make sure that the power supply can-
not be accidentally switched on.
CAUTION
Sharp element
Minor or moderate personal injury
‐
Wear personal protective equipment.
CAUTION
Toxic material
Minor or moderate personal injury
‐
The product will be classified as conta-
minated if it has been used for a liquid
which is injurious to health or toxic.
‐
Wear personal protective equipment.
CAUTION
Biological hazard
Minor or moderate personal injury
‐
Flush the product thoroughly with clean
water and rinse the parts in water after
dismantling.
‐
Wear personal protective equipment.
If the power cable or the level switch is
damaged, it must be replaced by a service
workshop authorised by Grundfos.
Service must be carried out by specially
trained persons.
Furthermore, all rules and regulations cov-
ering safety, health and environment must
be observed.
1. If the pump has been used for liquids other than
clean water, flush the pump thoroughly with clean
water before carrying out maintenance and
service.
2. Rinse the pump parts in water after dismantling.

6.1 Maintaining the product

• Check the pump and replace the oil once a year. If
the pump is used for pumping liquids containing
abrasive particles or it is operating continuously,
the pump must be checked at shorter intervals.
• If the drained oil contains water or other
impurities, we recommend that you replace the
shaft seal. Contact Grundfos Service.
6.2 Oil
In the case of long operating time or continuous
operation, the oil must be replaced as follows:
The oil must be replaced af-
Liquid temperature
20 °C
40 °C
The pump contains 78 ml non-poisonous oil.
Used oil must be disposed of in accordance with local
regulations.
ter
4500 operating hours
3000 operating hours
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