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Grundfos MQ 3-45 User Manual

Grundfos MQ 3-45
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14
English (US)
10.2 Pump stop
The pump incorporates an electronic protective
function that will stop the pump in case of
dry running
overtemperature
overloaded motor
seized-up motor/pump.
The pump will restart automatically after 30 minutes
(for 24 hours) in case of any type of fault if the auto-
reset function is activated (the green indicator light
on the control panel is on, see point 5 in the table of
section 10.1 Control panel).
5
Auto-reset (green):
As standard, this function is activated on delivery (does not
apply to pump versions for Australia).
When the indicator light is
on, the Auto-reset function is activated. The pump will
automatically attempt to restart every 30 minutes after an
alarm/fault over a period of 24 hours. After this period, the
pump will remain in the alarm condition.
off, the Auto-reset function is deactivated. The pump will not
restart after an alarm/fault.
The Auto-reset function can be activated/deactivated by
pressing the on/off button for 5 seconds.
Note: When water is consumed, the pump will start and stop
automatically, whether the Auto-reset light is on or off.
6
Alarm (red):
The indicator light is on when the pump is in alarm condition.
The alarm condition may have been caused by:
dry running
overtemperature
overloaded motor
seized-up motor/pump.
See section 10.2 Pump stop.
Illustration Description
Note
The pump settings are stored.
After supply failure, the pump will
automatically revert to its previous
operating condition when the
electricity supply is reconnected.

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Grundfos MQ 3-45 Specifications

General IconGeneral
Power consumption1000 W
Maximum head45 m
Maximum flow rate3 m³/h
Protection classIP54
Weight13 kg
Maximum liquid temperature35 °C
Maximum operating pressure7.5 bar
Pumped liquidClean water
Liquid temperature range0 - 35 °C
Maximum ambient temperature45 °C
Supply voltage220-240 V
Rated power - P20.75 kW
Mains frequency50/60 Hz
Rated current4.5 A
Enclosure classIP54
Inlet connection1 inch
Outlet connection1 inch
Power supply220-240 V, 50/60 Hz
Pump typeCentrifugal
Built-in pressure tankYes
ApprovalsCE
MaterialStainless steel

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