0208 681 0097
11
Operating & Maintenance
AV & EV Booster Sets
10). Operation
➢
The unit is a pressure transducer controlled single or multi-pump booster set, with the
potential to operate two or more pumps simultaneously, giving duty/assist or
duty/assist/standby operation.
➢
As the pressure in the system changes, the internal software programming of the variable
speed drive will adjust the speed of the pump to match the required duty of the system.
➢
If the demand on the system exceeds the capacity of the
‘Duty’ pump the ‘Assist’ will
automatically become enabled via the RS 485 data link or the control logic within the panel.
➢
This procedure will be repeated to activate the assist/standby pump (if available) if the duty
and assist pump fails to meet the demand of the system.
➢
The pump/s will run on under the control of the transducers which will continue to send a
signal to the inverters to increase speed, decrease speed or to stop at zero demand.
➢
Overload, over current, under current, over voltage and under voltage protection of the set is
accommodated within the variable speed drive.
➢
On multi-
pump sets the ‘Duty’ pump is normally determined via the internal electronic
programming of the drive. The drive will automatically rotate duty of pumps normally every
24 hours but can be pre-programmed to a different time period if required.
➢
All units have one or more pressure vessels built in to provide a positive pressure to the
system to aid control of the pumps.
➢
All standard units are fitted with a low water cut-off circuit, using a low voltage relay. Where
applicable, this should be wired to a float switch or electrodes in the suction break tank.
➢
On sets with twin suction break tanks, KGN Pillinger offer the option of an additional set of
electrodes and a ‘Twin Tank Selector Switch’ fitted either through the control panel fascia,
adjacent to the control panel, or local to the tanks, to enable the operator to select the ‘Live’
tank for low water protection whilst the other tank is isolated and emptied for cleaning or
maintenance purposes.
➢
Dependent upon specification, volt free contacts for the remote indication of pumps running,
pumps tripped and low water cut-off may be fitted for connection to clients BMS system.
➢
Pressure switches may be fitted for high- and low-pressure monitoring or control.
Variable Speed Drive Adjustment (VSD)
➢
If you need to modify the settings, refer to the designated manual as laid out on page 11 of
this manual.
