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ENGLISH
– To guarantee protection against
dripping water and the strain relief
of the PG screwed joint, a connecting cable of suitable external diameter is to be used (e.g. H 05 VV-F
3 G 1.5).
– When using the pump in units
where the water temperature
exceeds 90 °C, a connecting cable
with corresponding heat resistance
must be used.
– The supply cable must be laid in
such a way that it never touches the
pipework and/or the pump and
motor casing.
– Check that the mains current and
voltage comply with the data on the
rating plate.
– Make mains connection as shown
in Fig. 6.
– The connecting cable can be fed
through the PG screwed joint either
to the left or right. If necessary, the
blind plug and PG screwed joint are
to be exchanged. If the terminal box
is positioned on the side, always
insert the PG screwed joint from
below (Fig. 5)
Caution risk of short-circuit!
After electrical connections
the terminal box cover must
be closed properly, to protect
against moisture.
– Pump/installation must be earthed
in compliance with regulations.
– When connecting automatic switch-
gear (for double pumps), follow the
appropriate Installation and
Operating Instructions.
6 Operation
System filling and venting
The pump may need venting e.g. if the
heating and pump are working but the
heating element remains cold. If there
is air in the pump chamber, the pump
will not pump water.
Carefully fill the unit with water.
The pump is normally vented automatically after a short operatinal period.
Short-term dry running will not damage the pump. If it becomes necessary
to vent the pump, please observe the
following procedure:
– Switch off pump,
Risk of burning if the pump
is touched!
Depending on the operating
condition of the pump and/or
installation (fluid temperature)
the pump/mo tor can become
very hot.
– Close the valve on the discharge
side.
Risk of scalding!
Depending on the fluid temperature and the sys tem pressure, if the vent screw is completely loosened hot liquid or
vapour can escape or even
shoot out at high pressure.
– Carefully loosen and fully remove
the vent plug with a suitable
screwdriver (Fig. 9).
– Carefully push pump shaft back
several times with screwdriver.
– Protect all electrical parts against
the leaking water.
– Switch-on pump.