Grundfos SE1 50 Notice D'installation Et De Fonctionnement page 39

8.1.7 Replacing the shaft seal
Dismantling
1. Remove the screws (187).
2. Remove the cover for the oil chamber (58)
with a puller.
3. Remove the screws (186).
4. Remove the sensor (521) and the bracket
(522), if fitted, from the shaft seal.
5. Remove the shaft seal (105) with the puller.
6. 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).
Pay attention when installing the
sensor in horizontal pumps.
Make sure the sensor is positioned
correctly.
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).
Related information
8.1.4 Cleaning or replacing the pump housing
8.1.5 Replacing the impeller
8.2 Service kits
Damaged parts must always be replaced with
new and approved ones. Do not recondition motor
parts.
For service kits, visit www.grundfos.us (Grundfos
Product Center) or see the Service Kit Catalog.
See www.grundfos.us for service
videos.
8.3 Contaminated pumps
CAUTION
Biological hazard
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 after dismantling.
The product is classified as contaminated if it is
used for contagious or toxic liquid.
Contact Grundfos with details about the pumped
liquid before returning the product for service.
Otherwise, Grundfos can refuse to accept the
product.
Any application for service must include details
about the pumped liquid.
Clean the product in the best possible way before
returning it.
9. Storage
During long periods of storage, the pump must be
protected against moisture and heat.
Storage temperature: -22 °F to +140 °F (-30 °C to
+60 °C)
If the pump is stored for more than a
year or it takes a long time before it is
put into operation after the installation,
the impeller must be turned at least
once a month.
If the pump is in use, the oil should be changed
before storage.
After a long period of storage, the pump should be
inspected before it is put into operation. Make
sure if the impeller can rotate freely. Pay attention
to the condition of the shaft seal, O-rings, oil, and
the cable entry.
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