- 10 -
Cont ...
4 COMMISSIONING
4.11
System Flushing:
The pipework system should be flushed out prior
to the pump being connected to ensure any contaminants/chemical
residues and foreign bodies are removed from elsewhere in the
system.
4.12
Water Supply:
Always ensure that water storage capacity is adequate to meet
the demand. Ensure the pump chamber is full of water before starting the pump.
Failure to do this could result in seal damage. To ensure dry running does not
occur the pump must be primed as described in priming section below.
Do not run pump dry.
4.13
Priming:
Prior to switching the pump on and connecting the outlet hoses to
the system pipework the pump chamber must be primed. The pump must be
primed (filled with water) before starting. Turn on water supply, prime and vent
the pump by unscrewing the priming plug (Fig. 5) slowly until all air escapes and
water emerges. Re-tighten the plug.
4.14
Suction lift installation:
Self priming of suction hose.
First ensure both suction and delivery hose connections are airtight. Remove the
priming plug (Fig. 5) and slowly fill the pump body with water, whilst allowing the
air to escape. Replace the plug.
4.15
Suction hose:
Ensure the suction hose end is fully submerged in the water
source and the delivery hose is open to enable the pump to vent air.
4.16
Starting The Pump:
Turn on the electrical supply to the pump which will
now be operational.
Note: There is an integral on/off switch mounted on the pump (Fig. 5) which must
be turned to the on position.
a) The pump will start and begin to prime the suction pipework.
b) The priming procedure may need to be repeated if pump does not prime
within 5 minutes of starting.
Note: The amount of time required for priming will vary dependent on the
height of the suction lift.
c) Carefully check pump and pipework for leaks whilst pump running and
stationary before leaving the installation unattended.
The pump chamber must be full of water at all times. Seal
damage will result if the pump runs dry.
