8
MA25-01E
L
N
L1 L2 L3
L1 L2 L3
+
+
230V
(
230
/400V)
=
D
400V
(230/
400
V)
=
400V
(
400
/690V)
=
D
690V
(400/
690
V)
=
Pump
ENGLISH
Electrical installation
NB! The pump should never be started without being filled with water
. The pump’s electric motor shall be installed by a
licensed electrician and its installation shall conform to national legislation.
Electrical installation should take place after pipe and plumbing installation.
The pump shall be fed via a residual current device with maximum leakage current of no more than 30mA. It shall also be fitted
with an all-pole switch and approved automatic motor circuit breaker that should be set to match the motor’s rated current, see
the pump motor rating plate.
Check that the pump’s direction of rotation is the same as system flow – see the arrow on the motor housing.
Operation
See that the pump is filled with water before start.
The pump must never be dry run, as this could damage the shaft seal
.
Check that all valves to and from the pump are open.
Do not run the pump with a closed valve, as this may cause damage to the pump.
The pump shall always be shut off before the position on the central valve is being changed
(or other valves are being
closed).
The pump are not to work continuously with differential pressure to low (risk of cavitation).
Pump size
H (m)
0.37– 4.0kW
at least 8 H(m).
5.5 –7.5kW
at least 10 H(m)
Risk of freezing
At the risk of freezing, the pump and the inlet and outlet pipes must be drained. Drain the pump completely by removing the
drainplug/drainplugs.
3-phase
Check the pump motor rating plate which connec-
tion is applicable. Connect as shown below.
1-phase
In
In
