Grundfos SP User Manual

24
English (US)
8. Operation
Check the pump and system periodically for
water quantity, pressure, drawdown, periods of
cycling and operation of controls.
If the pump fails to operate, or there is a loss of
performance, refer to section
9. Troubleshooting.
8.1 Minimum flow rate
To ensure the necessary cooling of the motor, do
not set the pump flow rate so low that the
cooling requirements specified in section
6.2.2 Pumped liquids cannot be met.
8.1.1 Frequency of starts and stops
Motor type Number of starts
MS 402
• Minimum 1 per year is recommended.
• Maximum 100 per hour.
• Maximum 300 per day.
MS 4000
• Minimum 1 per year is recommended.
• Maximum 100 per hour.
• Maximum 300 per day.
MS 6000C
• Minimum 1 per year is recommended.
• Maximum 30 per hour.
• Maximum 300 per day.
MMS6
PVC windings
• Minimum 1 per year is recommended.
• Maximum 3 per hour.
• Maximum 40 per day.
PE/PA windings
• Minimum 1 per year is recommended.
• Maximum 10 per hour.
• Maximum 70 per day.
MMS 8000
PVC windings
• Minimum 1 per year is recommended.
• Maximum 3 per hour.
• Maximum 30 per day.
PE/PA windings
• Minimum 1 per year is recommended.
• Maximum 8 per hour.
• Maximum 60 per day.
MMS 10000
PVC windings
• Minimum 1 per year is recommended.
• Maximum 2 per hour.
• Maximum 20 per day.
PE/PA windings
• Minimum 1 per year is recommended.
• Maximum 6 per hour.
• Maximum 50 per day.

Grundfos SP Specifications

General

Material	Stainless Steel
Pump Type	Submersible
Application	Irrigation
Motor Range	0.37 kW to 4 kW
Liquid Temperature	0 °C to 40 °C
Series	SP
Power Range	0.37 kW to 4 kW
Frequency	50 Hz, 60 Hz
Head	Up to 200 m
Discharge Size	1 inch to 4 inches