14
12.4 Alarms
Maintenance & Commissioning Menu
There are a number of alarms and the unit will always
default to alarm display when one is in activation.
The unit will flash when in alarm mode to indicate
that there is a problem. If more than one alarm is tripped
then the system will display all alarms currently affecting
the unit - the unit will flash each alarm for a couple
of seconds before showing the next one, and will
continue to scroll through the list. When any condition
has been rectified the unit will continue to display any
other current alarms that still affect the system. Only
when all alarm faults have been rectified, will the unit
go back to Auto mode.
Note: There are volt free relays on the unit to give audible,
visual or BMS signals that the unit has gone into alarm mode.
The Low and High Pressure Alarms have their own circuits,
with all other conditions setting off General Alarm relay.
The alarms are as follows:
ID line Description Comments
ALARM – LO PRES Low pressure alarm activated
The unit will continue to operate under this alarm function, but invariably
the alarm will be caused by some other problem
ALARM – HI PRESS
High pressure alarm activated
The pump control will be discontinued until the alarm fault has
been rectified
ALARM – LEAK LIMIT
Volume of Water Introduced
The leakage limit volume has been exceeded. The pump control will
not operate until the alarm fault has been rectified. This can be done by
resetting Leakage Volume to 0, or by increasing make-up alarm above
make-up V2.
ALARM – TANK LEVEL
Water level in tank is too low
The pump control will be discontinued until the alarm fault has been
rectified. Investigate the cause.
FAULT PUMP1
Pump1 current draw is excessive
Press when this is displayed and the pump will start if it is working.
Run pump1 to ascertain the fault!
FAULT PUMP2
Pump2 current draw is excessive
As with pump1
PUMP1 TIMED OUT
Set point pressure not achieved
within the limit setting
Press when this is displayed and the pump will start if it is working. Run
pump1 to ascertain the fault! If this problem persists and the pump is still
working, then pump timeout setting should be increased.
PUMP1 TIMED OUT
Set point pressure not achieved
within the limit setting
As with pump1
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