VADA VFB-S35, Руководство по установке

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Pump will not stop
(continued).
The check valve
on the suction line
may be blocked 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.
A pressure controller
or mains switch over
device has not been
installed on the pump. Without a pressure controller or mains water
switch-over device, the pump will continue
to operate until the power is switched off.
The pump may
be sucking air. Check that the level of liquid in the tank has not
dropped below the minimum priming level.
There may be also 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.
Brass flow detection
valve on pressure
controller may
be jammed in the
open position. 1. Remove the pressure control.
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.
Pump is turning
on then off in
short durations. The pump may
not be providing
sufficient pressure. There could be potential of air
still in the suction pipeline.
1. Check the pressure gauge on the side
of the pressure controller to determine if
that model pump is operating correctly
when referencing its pump curve.
2. Check that the level of liquid in
the tank has not dropped below
the minimum priming level.
3. Close the isolating valve on the discharge
line side of the pressure controller
to see if the issue continues.
4. If it does, check the pressure control
for debris or suction pipe for leaks.
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VADA FLOW BOSS SUBMERSIBLE PUMP VFB-S35 INSTALLATION MANUAL
SYMPTOM CAUSE SOLUTION
TROUBLESHOOTING