The in-line strainer
on the suction line
may be blocked.
Check for blockages in the in-line strainer:
1. Close the isolating valve on the suction line.
2. Remove/clean in-line strainer
or replace if necessary.
3. Once in-line strainer has been
cleaned, open isolating valve on
suction line and retry for pressure.
There may be
presence of leaks
which are higher
than the minimum
flow of 0.6 l/min.
If the pump is turning on, then off in short
durations there may be a leak in the pipework.
1. Close the isolating valve on the
discharge line of the pressure controller
to see if the issue continues.
2. If it does not, check all taps, pipes, irrigation
solenoid valves & toilet cisterns for leaks.
3. If it does continue, then check pressure
control and suction pipe for debris.
4. If found, repair or replace pipework.
The pump may have
been incorrectly sized
for the application.
Contact the Reece store where the
product was purchased from.
The mesh filter in the
digital water switching
unit may be blocked.
* Only applicable if
application is using a
digital water switch.
If a digital water switching unit is installed:
1. Switch off power to the unit.
2. Isolate the water lines and remove
the pump barrel union.
3. Inspect/clean/replace the
switching unit mesh filter.
Pump performance
is unstable (e.g.
there is a change or
reduction of pressure
or flow output).
There may be
cavitation in the pump
(demand for water
is higher than it
can pump).
* Cavitation can be
identified by the noise
of the pump. You
will hear a bubbling,
crackling sounds like
marbles rattling inside
the pump casing.
The length of the suction pipe may be too long,
or the internal diameter may be too small:
1. Reduce either the suction
height or distance.
2. Increase the suction pipe internal diameter
to same size as the pump inlet or larger.
43
SYMPTOM
CAUSE
SOLUTION
