Grundfos MQ 3-45 Service Instructions

28.04.2003
GB
5 / 24
3. Dismantling and assembly
3.1 General information
Position numbers of parts (digits) refer to exploded views, sectional drawings and parts lists; position
numbers of tools (letters) refer to section 2.
Service tools.
3.1.1 Before dismantling
• Disconnect the electricity supply to the motor.
• Remove the electric cable in accordance with local regulations.
3.1.2 Before assembly
Gaskets and O-rings should always be replaced when the pump is overhauled.
• Clean and check all parts.
• Order the necessary service kits.
• Replace defective parts by new parts.

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