Pump performance
is unstable (e.g.
there is a change
or reduction of
pressure or flow
output) (continued).
Debris may be caught
in the suction pipe.
Check for debris or blockages
in the suction pipe:
1. Close the isolating valve on the suction line.
2. Check for debris.
3. If found, repair or replace pipework.
There may be a leak
in the suction pipe.
If the pump is turning on, then off
in short durations there may be
a leak in the suction pipe.
1. Close the isolating valve on the discharge
line side of the pressure controller
to see if the issue continues.
2. If it does, check the pressure control
for debris or suction pipe for leaks.
3. If it does continue, then check pressure
control and suction pipe for debris.
4. If found, repair or replace suction line.
Pump will not stop.
The electronic card in
the pressure controller
may be broken.
* Only applicable if
application is using a
pressure controller.
If a pressure controller has been installed,
the electronic card in the controller may
need to be removed and replaced with
a new card, or a new unit entirely.
This should only be done by
a qualified electrician.
The reset button on
the pressure controller
may be locked.
* Only applicable if
application is using a
pressure controller.
If a pressure controller has been installed:
1. Press the reset button on the face
of the unit several times.
2. Or, reset the power.
The check valve
on the suction line
may be stuck in the
open position.
The check valve may be blocked by debris.
1. Shut the relevant isolation valves.
2. Disconnect suction line.
3. Inspect check valve.
4. Clean or remove debris.
5. Ensure that an in-line strainer/filter is fitted
in the suction line between the pump and
the tank.
* Without an in-line strainer/filter
the warranty may be void.
Flow detection
valve on the Auto
Press Control may
be jammed in the
open position.
1. Remove the VFB-APC.
2. Inspect internals.
3. Clean or free debris.
4. Ensure that an in-line strainer/filter is fitted
in the suction line between the pump and
the tank.
TROUBLESHOOTING
44
VADA FLOW BOSS
JET PUMP
VFB-J90
INSTALLATION MANUAL
SYMPTOM
CAUSE
SOLUTION
