Commissioning
14
This procedure should be carried out individually for each pump in the pump set.
1)
Open all valves on the suction (inlet) side of the pump.
2)
Using the vent screw at the top of the pump (refer to Appendix to locate), allow any air in the pump body and suction
pipework to vent to atmosphere.
3)
When water (under pressure from the storage tank feeding the pump on the suction side) escapes through the vent screw
hole - and no more air bubbles can be seen - close the vent screw.
4)
Switch on the electrical supply to the pump motor and start the pump in AUTO mode. As each motor starts verify that the
direction of rotation correctly corresponds with the direction of the arrow shown on the body of the pump. If rotation is
backward STOP, switch off the pump and investigate.
5)
Slowly open the valve on the discharge manifold outlet to the system allowing water to be pumped into the system.
6)
Switch off, re-close the discharge valve and repeat steps 3 to 6 several times to ensure that all air is released from the pump
body and local pipework.
The above procedure should be carried out individually for each pump in the pump set.
4.9 Procedure for Lift Suction
Lift Suction is defined where the water storage tank is at a lower level than the pump set. In this case a negative pressure condition
may exist at the pump suction.
WARNING: THE "LIFT SUCTION" MODE OF OPERATION REQUIRES SPECIFIC VENTING PROCEDURES.
— Please call Dutypoint Systems Technical Support on +44 (0)1452 300590 for advice before attempting to vent the
pump(s).
The advised procedure should then be carried out individually for each pump in the pump set.
4.10 Programming the Controller
Dutypoint Systems fit a design of Inverter/Controller that is most suitable for the design duty of the pump set.
Manufacturer’s information for them is detailed in the Appendices to this manual.
Carefully follow the appropriate step-by-step setting-up procedures contained in the manual, ensuring that any data required to be
entered by the end user is accurately inserted where requested.
If in doubt please call Dutypoint Systems Technical Support on 01452 300590 for advice.
4.11 Operation and Performance Tests
Having checked that the pump set is installed, pre-charged, vented in accordance with the procedures set out earlier, carry out the
following running tests before handing over the pump set for operational use.
1)
Run each pump by selecting HAND (Manual) control.
2)
Re-select to AUTO mode.
3)
Create the conditions for a normal start and run and allow the selected ‘Duty’ pump to run. Whilst running observe the
pressure values. Verify the pump motor speeds up / slows down in accordance with the desired control philosophy.
4.12 Duty/Standby Twin Pump Sets
1)
On Duty/Standby sets, wait for a normal stop to take place (or create the conditions where this would happen) and check
that the ‘Duty’ pump stops. Whilst stopped simulate a fault by inhibiting the ‘Duty’ pump and then recreate the conditions
for a normal start to take place. Check that the ‘Standby’ Pump now starts and runs in place of the inhibited ‘Duty’ pump
and observe the pressure values. Verify that the pump motor speeds up / slows down in accordance with the desired control
philosophy.
2)
Wait for a normal stop to take place (or create the conditions where this would happen) and check the ‘Standby’ pump stops.
Whilst stopped undo the inhibit to the ‘Duty’ pump which should now return to normal.
