Grundfos MQ 3-45 Service Instructions

28.04.2003
GB
22 / 24
C12
TM02 2388 4201
Wait approx. 5 min. or until water comes out of the tap.
C13
TM02 2375 4201/TM02 2376 4201
If the pump delivers water, it is OK. Connect the controller
correctly.
If the pump does not deliver water, continue the fault
finding procedure. The controller continues to be
bypassed.
C14
TM02 2372 4201
Disconnect the electricity supply by pulling out the plug.
C15
TM02 2389 4201
Dismantle the hydraulic part and check for defects, dirt
and wear.
C16
TM02 2390 4201
Connect the electricity supply by plugging the pump into
the mains.
C17
TM02 2391 4201
Check that the motor can rotate.
If the motor cannot rotate, replace it.
If the motor can rotate, the hydraulics are faulty. See the
exploded drawing.
or
continue the
fault finding

Grundfos MQ 3-45 Specifications

General

Power consumption	1000 W
Maximum head	45 m
Maximum flow rate	3 m³/h
Protection class	IP54
Weight	13 kg
Maximum liquid temperature	35 °C
Maximum operating pressure	7.5 bar
Pumped liquid	Clean water
Liquid temperature range	0 - 35 °C
Maximum ambient temperature	45 °C
Supply voltage	220-240 V
Rated power - P2	0.75 kW
Mains frequency	50/60 Hz
Rated current	4.5 A
Enclosure class	IP54
Inlet connection	1 inch
Outlet connection	1 inch
Power supply	220-240 V, 50/60 Hz
Pump type	Centrifugal
Built-in pressure tank	Yes
Approvals	CE
Material	Stainless steel