Operation; Maintenance And Service - Grundfos sp series Installation And Operation Manual

8.2 Operation

8.2.1 Minimum flow rate
To ensure the necessary cooling of the motor, the pump flow rate
should never be set so low that the cooling requirements in
section
5.4 Liquid temperatures/cooling
8.2.2 Frequency of starts and stops
Motor type
MS 402
MS 4000
MS 6000
PVC windings
MMS6
PE/PA windings
PVC windings
MMS 8000
PE/PA windings
PVC windings
MMS 10000
PE/PA windings
PVC windings
MMS 12000
PE/PA windings

9. Maintenance and service

All pumps are easy to service.
Service kits and service tools are available from Grundfos.
The pumps can be serviced at a Grundfos service centre.
Warning
If a pump has been used for a liquid which is
injurious to health or toxic, the pump will be classified
as contaminated.
If Grundfos is requested to service the pump, Grundfos must be
contacted with details about the pumped liquid, etc. before the
pump is returned for service. Otherwise Grundfos can refuse to
accept the pump for service.
Possible costs of returning the pump are paid by the customer.
14
cannot be met.
Number of starts
• Minimum 1 per year is
recommended.
• Maximum 100 per hour.
• Maximum 300 per day.
• Minimum 1 per year is
recommended.
• Maximum 100 per hour.
• Maximum 300 per day.
• Minimum 1 per year is
recommended.
• Maximum 30 per hour.
• Maximum 300 per day.
• Minimum 1 per year is
recommended.
• Maximum 3 per hour.
• Maximum 40 per day.
• Minimum 1 per year is
recommended.
• Maximum 10 per hour.
• Maximum 70 per day.
• Minimum 1 per year is
recommended.
• Maximum 3 per hour.
• Maximum 30 per day.
• Minimum 1 per year is
recommended.
• Maximum 8 per hour.
• Maximum 60 per day.
• Minimum 1 per year is
recommended.
• Maximum 2 per hour.
• Maximum 20 per day.
• Minimum 1 per year is
recommended.
• Maximum 6 per hour.
• Maximum 50 per day.
• Minimum 1 per year is
recommended.
• Maximum 2 per hour.
• Maximum 15 per day.
• Minimum 1 per year is
recommended.
• Maximum 5 per hour.
• Maximum 40 per day.