Grundfos MQ - Troubleshooting and Fault Finding; Common Pump Faults and Remedies

16
Hold the shaft with a screwdriver.
29
Tighten the impeller nut while holding the shaft with
the screwdriver. Tightening torque: 7 Nm.
30
Fit the O-rings on the inlet part.
31
Lubricate the O-rings with O-ring grease.
32
Lubricate the O-ring of the self-priming part.
33
Fit the inlet part in the self-priming part.
34