Filling With Oil; Service Kits; Contaminated Pumps; Fault Finding - Grundfos AP80-100 Montage- Und Betriebsanleitung

Pump type
AP80
AP100
8.5.1 Draining of oil
1. Place the pump on a level surface with one oil
screw pointing downwards.
2. Place a 2.5 litre capacity transparent container
under the oil screw.
3. Remove the lower oil screw.
4. Remove the upper oil screw. Inspect the oil. If the
colour is greyish white, the oil may contain
water.If the oil contains water, the shaft seal is
defective and must be replaced. If the oil quantity
is less than the specified, the shaft seal is
defective and must be replaced. If the shaft seal
is not replaced, it can cause motor damage.
5. Clean the surfaces for gaskets and oil screws.

8.5.2 Filling with oil

1
Oil filling position
Proceed as follows:
1. Place the pump horizontally, on a level surface.
2. Fill new oil into the chamber through the oil filling
position (1). The correct oil volume is prescribed
in the Table above. Use Shell Ondina X420 or
equivalent.
3. Remove the old seal (gasket) for the oil plug,
and replace it with a new seal, which can be
found in Kit Oil Plug Seals.
4. Fit both oil screws
Quantity of oil in the
oil chamber [l]
0.6
1.9

8.6 Service kits

For details on available service kits, see the Grundfos
Product Center (GPC) at product-
selection.grundfos.com.

8.7 Contaminated pumps

The product is classified as contaminated, if it is used
for contagious or toxic liquid.
CAUTION
Biological hazard
Minor or moderate personal injury
‐
Flush the pump thoroughly with clean
water and rinse the pump parts after
dismantling.
Before returning the product for service, contact
Grundfos with details about the pumped liquid.
Otherwise, Grundfos can deny to service the product.
Any application for service must include details about
the pumped liquid.
Clean the product in the best possible way before you
return it.

9. Fault finding

9.1 The pump does not start

Cause
Electricity supply interrupted – short circuit or
earth connection in the cable or motor windings.
Remedy
• Have the motor and wires checked by a
specialist and replaced, if necessary.
Cause
Fuses, motor protection switch and/or monitoring
devices are triggered.
Remedy
• Have a specialist inspect the connection and
correct them as necessary.
• Have the motor protection switch adjusted
according to the technical specifications and
reset monitoring equipment.
• Check that the impeller/propeller runs
smoothly.
• Clean it or free it as necessary.
Cause
The oil chamber seal probe (optional) has
interrupted the power circuit
Remedy
17