Startup; Maintenance And Service; Oil; Construction - Grundfos Unilift AP35B Installations- Und Bedienungsanleitung

5. Startup

Before starting the pump, submerge the pump inlet
in the pumped liquid.
Open the isolating valve, if fitted, and check the level
switch setting.
The pump may be run briefly to check the
Note
direction of rotation without being
submerged in the pumped liquid.

6. Maintenance and service

Warning
Before starting any work on the product,
make sure that the power supply has been
switched off and that it cannot be
accidentally switched on.
Before carrying out maintenance and service, it must
be ensured that the pump has been thoroughly
flushed with clean water. Rinse the pump parts in
water after dismantling.
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.
Warning
Out of consideration for the personal
safety and health, this work must be
carried out by specially trained persons.
Furthermore, all rules and regulations
covering safety, health and environment
must be observed.
Be careful during dismantling as you will
get access to sharp edges, etc., which
may cause cuts. Wear protective gloves.
A possible replacement of the cable or the
level switch must be carried out by an
authorised Grundfos service workshop.

6.1 Oil

The pump contains approx. 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,
we recommend that you replace the shaft seal.
10

6.2 Construction

The construction of the pump will appear from the
table below and fig. D, page 199.
Pos. Description
50 Pump housing
37a O-ring
49 Impeller
150 Motor with flange
66 Washer
84 Base
67 Lock nut
6 Inlet part
105a Shaft seal
182 Level switch

6.3 Service kits

Service kit
Shaft seal, standard
Shaft seal, FKM
Oil

6.4 Contaminated pumps

If a pump has been used for a liquid which
is injurious to health or toxic, the pump will
be classified as contaminated.
If you request Grundfos to service the pump, contact
Grundfos with details about the pumped liquid, etc.
before you return the pump for service. Otherwise
Grundfos can refuse to accept the pump for service.
Possible costs of returning the pump are paid by the
customer.
However, any application for service (no matter to
whom it may be made) must include details about
the pumped liquid if the pump has been used for
liquids which are injurious to health or toxic.
Part number
96429307
96429308
96010646