Grundfos MQ 3-45 - Replacing the Pressure Tank

28.04.2003
GB
8 / 24
3.3 Replacing the pressure tank
3.3.1 Removing the pressure tank
1. Remove the cover pos. 43.
2. Remove the pressure tank pos. 42 including the O-ring pos. 44. It can be loosened using the fingers.
3. If the union nut including O-ring pos. 44 is not removed with the pressure tank, remove it using a 42 mm
socket.
3.3.2 Fitting the pressure tank
1. If the pressure tank pos. 42 has been screwed out of the union nut, lubricate the threads of the pressure
tank with Loctite 5331 and screw the tank into the union nut.
2. Fit the O-ring pos. 44 and screw the pressure tank pos. 42 into the motor housing pos. 180 by hand.
3. Fit the cover pos. 43.