Maintaining The Product; Oil; Construction - Grundfos UNILIFT APG Installation And Operating Instructions Manual

8.1 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.

8.2 Oil

In the case of long operating time or continuous
operation, the oil must be replaced as follows:
Liquid tempera-
The oil must be replaced after
ture
20 °C
40 °C
The pump contains 140 ml of non-poisonous oil. Use
MARCOL 152 ESSO oil or equivalent type.
Used oil must be disposed of in accordance with local
regulations.
Related information
8.8 Changing the oil
4500 operating hours
3000 operating hours

8.3 Construction

The construction of the pump will appear from the
table below and the sectional drawing in the
appendix.
Pos. Description
9a Spline
12c Set screw
26 Screw
31 Plate
34 Screw
37 O-ring
44 Grinder ring
44a Screw
45 Grinder head
49 Impeller
50 Pump housing
66 Washer
67a Plug, power cable
67b Plug, float switch cable
84 Base
86 Cable gland plate
150 Motor with flange
157 O-ring
160 Top compartment
161 Capacitor
169 Guide
181 Power cable
182 Float switch
184b Screw
188a Screw
190 Pump handle
193 Screw
194 O-ring
970 Nameplate
15