Grundfos MQ Operating instructions

GRUNDFOS

ILLUSTRATED SERVICE INSTRUCTIONS

50/60 Hz

Contents

Fitting the non-return valve in the suction port .................................................................... 2

Dismantling the pump.......................................................................................................... 3

Assembling the pump........................................................................................................ 10

Replacing the capacitor..................................................................................................... 18

Replacing the flow sensor ................................................................................................. 20

Replacing the pressure switch........................................................................................... 24

Replacing the non-return valve of the outlet...................................................................... 27

Fitting the non-return valve

in the suction port

Remove the suction port.

Fit the non-return valve into the suction port.

Fit and tighten the suction port.

Dismantling the pump

Remove the screw of the clamp.

Remove the clamp.

Remove the screws of the pump sleeve.

Loosen the pump sleeve using a screwdriver.

Remove the pump sleeve.

Pull out the self-priming part.

Remove the inlet part.

Remove the O-ring from the self-priming part.

Pull the valve seat out of the self-priming part.

Remove the O-ring from the valve seat.

Remove the O-ring from the inlet part.

Remove the plug in the middle of the motor cover.

Hold the shaft with a screwdriver.

Slacken the impeller nut while holding the shaft.

Remove the washers.

Remove the impellers and chambers.

Remove the washers.

Pull off the rotating shaft seal part using two screw-

drivers.

Remove the stationary shaft seal part if the motor is

not to be pulled out.

Insert a screwdriver between the pump housing and

the rubber ring, and prise out the stationary shaft seal

part.

Pull the rubber ring out of the pump housing using a

screwdriver, and remove both rings.

Remove the four screws of the terminal box cover.

Take off the cover.

Remove the screws of the control unit.

Remove the retaining clip of the capacitor.

Disconnect the red and white motor conductors from

the capacitor.

Disconnect the blue motor conductor from the terminal

block.

Slacken the screw which fixes the earth conductor of

the motor.

Loosen the cover of the pressure tank with a light

blow.

Unscrew the pressure tank.

The pressure tank.

Remove the screws of the end cover.

Remove the four screws in the hole for pressure tank.

Disengage the end cover from the pump using a

screwdriver.

Pull out the motor conductors.

Push out the motor.

Remove the O-ring from the motor.

Remove the O-ring on the shaft using a screwdriver.

Remove the stationary shaft seal part if it has not been

removed (picture 19).

Remove the rubber ring.

Other manuals for MQ

This manual suits for next models

Table of contents

Other Grundfos Water Pump manuals

Grundfos

Grundfos UPE Series 2000 User manual

Grundfos

Grundfos UPH 70-25P User manual

Grundfos

Grundfos KPL User manual

Grundfos

Grundfos TPE 2 Series Operating instructions

Grundfos

Grundfos CM User manual

Grundfos

Grundfos MTA 110H-180 User manual

Grundfos

Grundfos Hydro 2000 S User manual

Grundfos

Grundfos Sololift2 Operating instructions

Grundfos

Grundfos Unilift AP12 User manual

Grundfos

Grundfos Unilift KP 150 User manual

Grundfos

Grundfos LC 232 User manual

Grundfos

Grundfos CHV 2 Series User manual

Grundfos

Grundfos ALPHA2 Series User manual

Grundfos

Grundfos Home Booster 4.5 Manual

Grundfos

Grundfos LC 241 User manual

Grundfos

Grundfos PS.R.05-17 User manual

Grundfos

Grundfos ALPHA1 B User manual

Grundfos

Grundfos CM User manual

Grundfos

Grundfos SCALA1 User manual

Grundfos

Grundfos DMX 221 User manual

Grundfos

Grundfos Sololift+ WC-1 User manual

Grundfos

Grundfos MAGNA3 25-100 (N) User manual

Grundfos

Grundfos DDA 7.5-16 User manual

Grundfos

Grundfos CR 32 Operating instructions

Popular Water Pump manuals by other brands

Neptun

Neptun NPHW 5500 operating instructions

Sensidyne

Sensidyne Gilian BDX-II Operation & service manual

Draper

Draper 47808 instructions

Trolla

Trolla 12820 manual

Sunfab

Sunfab SVH Series installation guide

WilTec

WilTec 50740 Operation manual

Fieldmann

Fieldmann FVC 5015 EK user manual

Everbilt

Everbilt EFSUB5-122HD Use and care guide

Graco

Graco Husky 3300e manual

esotec

esotec 101018 operating manual

moyno

moyno 2000 CC Service manual

Becker

Becker BASIC VASF 2.80/1-0.AC230 operating instructions

Sykes AmeriPumps

Sykes AmeriPumps GP100M Operation and maintenance instructions

DUROMAX

DUROMAX XP WX Series user manual

BRINKMANN PUMPS

BRINKMANN PUMPS SBF550 operating instructions

Franklin Electric

Franklin Electric IPS Installation & operation manual

Xylem

Xylem e-1532 Series instruction manual

Milton Roy

Milton Roy PRIMEROYAL instruction manual