Checking And Changing The Oil - Grundfos SE1 50 Installation And Operating Instructions Manual

10.2 Checking and changing the oil

Inspect the oil level and condition every
3000 operating hours or at least once a
year.
When the pump is new or after the re-
placement of the shaft seal, check the oil
level and water content after one week of
operation.
• Change the oil after 3000 operating hours or once
a year.
• Change the oil if the shaft seal has been replaced.
Check and change the oil in the oil chamber as
described below.
Use Shell Ondina X420 oil or equivalent
type.
Power [kW]
2.2
3.0
4.0
2-pole 6.0
7.5
9.2
11.0
1.0
1.3
1.5
2.2
4-pole
3.0
4.0
5.5
7.5
Draining of oil
Proceed as follows:
1. Place the pump on a plain surface with one oil
screw pointing downwards.
2. Place a transparent container (approximately 1
litre) under the oil screw.
3. Loosen and remove the lower oil screw.
4. Remove the upper oil screw and allow the oil to
drain into the container.
•
•
5. Clean the faces for the gaskets for oil screws.
Oil quantity [l]
0.30
0.55
Filling with oil
1. Turn the pump, so that the oil filling holes are
placed opposite each other, pointing upwards.
0.70
0.30
0.55
0.70
Oil filling holes
Pos.
1
2. Pour oil into the oil chamber through one filling
hole until it starts coming out of the other hole.
WARNING
Pressurised system
Death or serious personal injury
‐
The oil chamber may be under
pressure. Loosen the screws care-
fully and do not remove them until
the pressure has been fully re-
lieved.
Check that the quantity of oil corresponds to
the quantity stated in table above. If the
quantity is smaller than stated, the shaft seal is
defective and must be replaced.
Check the water content in the oil by letting the
oil and water separate. If the quantity of water
exceeds 20 %, the shaft seal is defective and
must be replaced. Not replacing the shaft seal
may cause damage to the motor.
Dispose of used oil in accordance with lo-
cal regulations.
1
Description
Oil filling/venting
33