Grundfos MQ 3-45 Service Instructions

28.04.2003
GB
20 / 24
4.10.3 Observation C
C1
TM02 2383 4201
Check that the inlet conditions are satisfactory.
C2
TM01 9696 2600
Prime the pump.
C3
TM02 2372 4201
Disconnect the electricity supply by pulling out the plug.
C4
TM02 2384 4201
Check if the pump is seized-up by means of a screwdriver.
If it is impossible to turn the motor and pump, the hydrau-
lics must be checked. See the exploded drawing.
C5
TM02 2385 4201/TM02 2386 4201
Bypass the controller by connecting the motor lead to the
mains cable.
Non-return valve

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