Servicing The Product - Grundfos Unilift AP12 Installation And Operating Instructions Manual

7. 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
cannot be accidentally switched
on.
CAUTION
Biological hazard
Minor or moderate personal injury
- Before carrying out maintenance
and service, flush the pump
thoroughly with clean water.
- After dismantling the pump, rinse
the pump parts in clean water.
CAUTION
Sharp element
Minor or moderate personal injury
- Wear protective gloves.
This work must be carried out by
specially trained persons.
Furthermore, all rules and regulations
covering safety, health and
environment must be observed.
Clean the pump before service. See section
7.1 Cleaning the pump.
Check the function of the pump, inspect it for
damage and replace the oil once a year. If the
pump is used for pumping liquids containing
abrasive particles or it is operating continuously,
replace the oil at shorter intervals. See the table
below.
In the case of long operating time or continuous
operation, replace the oil as follows:
Liquid
temperature
[°F (°C)]
68 (20)
104 (40)
131 (55)
The pump contains approximately 60 ml non-
poisonous oil.
Used oil must be disposed of in accordance with
local regulations.
If the drained oil contains water or other
impurities, the shaft seal must be replaced.
The oil must be
replaced after
4500 operating hours
3000 operating hours
1500 operating hours
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