English (GB)
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8. Servicing and maintaining the product
8.1 Safety instructions and requirements
8.2 Maintenance schedule
Inspect pumps running normal operation once a year.
Check the following points:
• Power consumption
•
Oil level and oil condition
See section
•
Cable entries
Make sure that the cable entries are waterproof, that the
cables are not sharply bent or pinched, and that the cable
sheaths have no visual defects.
•
Impeller clearance
Check the impeller clearance. See section
adjustment of impeller clearance
•
Pump parts
Check the pump housing, etc. for possible wear.
Replace defective parts.
•
Ball bearings
Check the shaft for noisy or heavy operation; turn the shaft by
hand. Replace defective bearings.
A general overhaul of the pump is usually required in case of
defective bearings or poor motor function. This work must be
carried out by an authorised service workshop.
DANGER
Pump can tilt
Death or serious personal injury
- During maintenance and
service, including
transportation to service
workshop, always support the
pump by means of lifting chains
or place it in horizontal position
to secure stability.
DANGER
Electric shock
Death or serious personal injury
- Before starting work on the
pump, make sure that the
mains switch has been locked
in position 0.
Make sure that the power
supply cannot be accidentally
switched on.
WARNING
Crushing of hands
Death or serious personal injury
- Make sure that all rotating parts
have stopped moving.
Maintenance and service must be
carried out by specially trained
people.
Maintenance and service work on
explosion-proof pumps must be
carried out by Grundfos or a
service workshop authorised by
Grundfos.
In case of repairs, always use
original service parts from the
manufacturer as this will ensure
correct dimensions of flame path
gaps.
The bolts used in the motor must
be class A4-80 or A2-80
according to EN/ISO 3506-1.
VER 2.
A defective bearing may reduce
the Ex safety.
WARNING
Chemical hazard
Death or serious personal injury
- Flush the pump thoroughly with
clean water before carrying out
maintenance and service.
Rinse the pump parts in water
after dismantling.
Service instructions and videos
can be found in Grundfos Product
Center at www.grundfos.com.
