Pump Stop - Grundfos MQ Notice D'installation Et De Fonctionnement

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9.2 Pump stop

The pump incorporates an electronic protec-
tive 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
9.1 Control panel).
The pump settings are stored.
After supply failure, the pump will
Note
automatically revert to its previous
operating condition when the elec-
tricity supply is reconnected.
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Pump on (green)
The indicator light is on when the pump is running.
Auto reset (green)
As standard, this function is activated on delivery.
When the indicator light is on, the auto-reset func-
tion 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.
When the indicator light is off, the auto-reset func-
tion 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.
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 9.2 Pump stop.

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