Generator Or Inverter; Start-Up; Maintenance; Service Kits - Grundfos MQ Notice D'installation Et D'entretien

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The pump must be connected to the mains via a rub-
ber-sheathed cable with a protective earth lead. It is
possible to replace the mains supply cable, see
fig. 7.
Fig. 7
Connect the mains supply cable of the pump to the
electricity supply. When the cable is connected, a red
and a green indicator light on the control panel will
be on, see fig. 8.
Fig. 8
* Does not apply to pump versions for Australia.

5.3 Generator or inverter

Note: The MQ can be powered by a generator or an
inverter. However, the pump will only operate satis-
factorily if the generator or inverter generates a true
sinusoidal wave with the necessary power and volt-
age input.

5.4 Start-up

Before start-up, the pump must be filled with 4.5 to
5 litres water to enable it to self-prime, see fig. 9. The
pump is self-priming with a maximum suction lift of
8 metres.
Fig. 9
H
4.5 to 5 l
When the pump is started, it will start to self-prime.
When the pump has been primed, it will automati-
cally change over to normal operation. If the priming
has not been completed within 5 minutes, the pump
will stop automatically and attempt to restart after
30 minutes. It is possible to reset the pump manually,
see point 2 in the table in section 4.1 Control panel.

6. Maintenance

Under normal operating conditions, the pump is
maintenance-free. However, it is recommended to
keep the pump clean.
Do not remove the pressure tank from
the pump unless it has been vented
*
through the air escape valve.
Never touch the electronics unless the
pump has been switched off for at
least 5 minutes.
If there is any risk of frost damage, drain the pump
through the drain hole and slacken the union nut on
the discharge pipe, see fig. 10. The pump must be
filled with liquid before it is started up again, see
fig. 9.
Fig. 10

6.1 Service kits

Service kits are available for the MQ pump. The
service kits consist of the following replaceable
parts:
• shaft seal,
• motor,
• electronic units,
• hydraulic components.
O
2
9