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CAUTION
Hot or cold surface
Minor or moderate personal injury
‐
Make sure that no one can accidentally
come into contact with hot or cold sur-
faces.
8.1 Contaminated products
CAUTION
Biological hazard
Minor or moderate personal injury
‐
Flush the pump thoroughly with clean
water and rinse the pump parts in wa-
ter after dismantling.
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 pumped liquid
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 pumped 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.
Related information
9.1 Taking the product permanently out of operation
8.2 Service documentation
Pumps
Service instructions and service kits are available in
Grundfos Product Center at http://product-
selection.grundfos.com.
Grundfos motors
Service documentation is available in Grundfos
Product Center at http://product-
selection.grundfos.com. If you have any questions,
please contact the nearest Grundfos company or
service workshop.
Sourced motors of other makes than Grundfos
Contact the motor manufacturer.
8.3 Maintenance
8.3.1 Periodic checks
Make the following checks at regular intervals,
depending on the conditions and time of operation.
•
Check the quantity of liquid and the operating
pressure.
•
Check that there are no leaks.
•
Check that the motor is not overheating.
16
•
Check the tripping function of the motor-protective
circuit breaker.
•
Check that all controls are operating satisfactorily.
If the above checks do not reveal any abnormal
operating details, no further checks are necessary.
Should any faults be found, check the symptoms
according to the section on fault finding the product.
Related information
10. Fault finding the product
8.3.2 Pump
Pump bearings and shaft seal are maintenance-free.
8.3.3 Filters
Clean chip trays and filters at regular intervals to
ensure a correct flow of liquid. This will also increase
the life of the pump.
8.3.4 Motor bearings
Motors not fitted with grease nipples are
maintenance-free.
Motors fitted with grease nipples must be lubricated
with a high-temperature, lithium-based grease. See
the instructions on the fan cover.
In the case of seasonal operation where the motor is
idle for more than 6 months of the year, grease the
motor when you take the pump out of operation.
Depending on the ambient temperature, replace or
lubricate the motor bearings according to the tables
below.
•
The tables apply to 2-pole motors.
•
Intervals for 4-pole motors are twice as long as
those for 2-pole motors.
If the ambient temperature is lower than 40 °C,
replace or lubricate the bearings at the same intervals
as for 40 °C.
Intervals for 2-pole motors:
Bearing replacement interval
Motor size
[operating hours * ]
[kW]
40 °C
45 °C
0.37 - 0.75 18000
-
1.1 - 7.5
20000 15500 12500 10000
*
The number of operating hours stated for bearing
replacement are guidelines only.
50 °C
55 °C 60 °C
-
-
-
750
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