Pentair ONGA FARMMASTER JJ Series, Руководство пользователя

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15
Troubleshooting Guide
Symptom Cause Remedy
Pump must be primed; make
sure that the pump casing is
full of water. Refer priming
instructions.
Make sure there are no leaks
in suction piping. Suction leaks / lost prime
Make sure suction pipe inlet
is well below the water level
to prevent pump from
sucking air.
Make sure that the impeller
is not clogged. This should
be checked by qualified
personnel only.
Impeller and diffuser may be
worn. If so, check with your
local Onga dealer or suitably
qualified personnel.
Clogged pipe / impeller,
worn impeller.
Pump may be trying to push
too high a column of water. If
so, a “higher head” pump is
required.
No power at outlet. Use another electrical
appliance that is known to
work to check the power
outlet.
Blown fuse. Check fuse and replace if
necessary.
Cavitation. Close gate valve on
discharge to increase
pressure to above minimum
operating pressure of
selected injector.
Incorrectly sized pipe. Check pipe work pressure
losses and replace with
larger diameter pipe if
required.
Motor burnt out due to
voltage spike or flooded by
water. The motor may need
replacing.
Valves turned to the closed
position. Check the plumbing to
ensure the valves are in the
correct position for pumping
on the suction and
discharge.
Pump failure or reduced
capacity or reduced
discharge pressure.
Air ingress to system. Prime the pump. Check that
there are no air leaks in the
suction piping or fittings.
Check that there are no leaks
coming from beneath the
pump.