English (GB)
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8.4.4 Replacing the shaft seal
Dismantling
1. See section 8.4.1 Cleaning or replacing the pump
housing.
2. See section 8.4.2 Replacing the impeller.
3. Remove the screws (187).
4. Remove the cover for the oil chamber (58) using
a puller.
5. Remove the screws (186).
6. Remove the sensor (521) and the bracket (522),
if fitted, from the shaft seal.
7. Remove the shaft seal (105) using the puller.
8. Remove the O-ring (153b).
Assembling
1. Fit and lubricate the O-ring (153b) with oil.
2. Slide the new shaft seal (105) gently over the
shaft.
3. Fit the bracket (522) and the sensor (521), if
fitted, with one of the screws (186).
4. Fit and tighten the screws (186).
5. Fit and lubricate the O-ring (107) in the cover for
the oil chamber (58) with oil.
6. Fit the cover for the oil chamber (58).
7. Fit and tighten the screws (187).
8.5 Spare parts
Damaged parts must always be replaced with new
and approved parts. Do not recondition motor parts
by machining, re-tapping, welding, etc.
For service kits for SE1, SEV, see
www.grundfos.com or Service Kit Catalogue.
Service instruction and service video can be found
on www.grundfos.com.
8.6 Contaminated pumps
The product will be classified as contaminated if it
has been used for a liquid which is injurious to health
or toxic.
If you request Grundfos to service the product,
contact Grundfos with details about the liquid, etc.
before returning the product for service. Otherwise,
Grundfos can refuse to accept the product for
service.
Any application for service must include details
about the liquid.
Clean the product in the best possible way before
you return it.
Costs of returning the product are to be paid by the
customer.
Make sure the sensor is positioned
correctly. See section 7.3.2 WIO sensor
and fig. 16.
Pay extra attention when installing the
sensor in horizontal pumps.
WARNING
Infection caused by wastewater
Minor or moderate personal injury
- Wear appropriate personal protective
equipment and clothing.
- Observe the local hygiene regulations in
force.
WARNING
Biological hazard
Death or serious personal injury
- Flush the pump thoroughly with clean
water and rinse the pump parts in water
after dismantling.
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