English (GB)
11
8. Startup
8.1 Non-self-priming pumps
8.1.1 Liquid filling
1. Close the isolating valve on the discharge side of
the pump.
2. Open the isolating valve in the suction pipe
completely before starting the pump.
3. Remove the filling plug. See fig.
.
4. Fill the pump housing and the suction pipe
completely with liquid until a steady stream of
liquid runs out of the filling hole.
5. Fit and tighten the filling plug.
6. Start the pump and slowly open the discharge
isolating valve while the pump is running. This
ensures venting and pressure build-up during
startup.
Fig. 10
Position of filling hole and drain hole
8.2 Self-priming pumps
8.2.1 Liquid filling
1. Make sure that the discharge pipe is empty and
that the height from the centre of the suction port
to the first tapping point (H
1
) meets the
requirements. See section
2. Open the isolating valves in the suction and
discharge pipes.
3. Open a tap close to the pump so that air can
escape.
4. Remove the filling plug in the pump. See fig.
.
5. If a filling plug has been installed in the discharge
pipe, remove this plug and use this hole for filling.
Otherwise use the filling hole in the pump.
6. Fill the pump housing and the suction pipe
completely with liquid until a steady stream of
liquid runs out of the filling hole.
7. Fit and tighten the filling plug(s).
8. Start the pump and wait until liquid is pumped. If
you have used the filling hole in the pump, it may
be necessary to repeat steps 1 to 8 to ensure that
the pump is completely filled with liquid.
9. If the pump does not operate properly after
several start attempts, see section
Fig. 11
Position of filling holes and drain hole
Note
If there is a risk of condensation in the
motor, remove the motor drain plug before
startup and keep the drain hole open
during operation. See fig.
.
Caution
Do not start the pump until it has been
filled with liquid.
Warning
Pay attention to the direction of the vent
hole, and make sure that the escaping hot
or cold liquid does not cause injury to
persons or damage to the equipment.
Caution
The discharge isolating valve must be
opened immediately after startup of the
pump. Otherwise the temperature of the
pumped liquid may become too high and
cause damage to the equipment.
TM
03
87
74
10
08
Note
If it is difficult for the pump to build up
pressure, it may be necessary to repeat
steps
Filling hole
Drain hole
Caution
Do not start the pump until it has been
filled with liquid.
Warning
Pay attention to the direction of the vent
hole, and make sure that the escaping hot
or cold liquid does not cause injury to
persons or damage to the equipment.
Note
If connected to a frequency converter, the
pump must run at maximum speed (3450
min
-1
) during startup.
TM
05
81
69
20
13
Note
The pump is allowed to run for 5 minutes
to attempt to suck liquid. If the pump does
not build up pressure and flow, repeat
steps 1 to 8.
Filling hole
Drain hole
Filling hole
Summary of Contents for CM
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