onga SMH35, Owner'S Manual

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14
Symptom Cause Remedy
Pump does
not operate
and motor
does not run. No Electricity Verify presence of electricity.
Not Plugged in correctly Ensure pump is connected properly
Circuit breaker activated Reset circuit breaker
Pump hums
and the
thermal relays
cut in and out Pump is clogged by
debris Clean suction pipe and foot valve/
strainer. Clean the pump by fl ushing
with water. Remove the priming and
drain plugs. If the pump cannot start
after several fl ushings, it must be
dismantled and cleaned.
Capacitor is defective Replace Capacitor
Pump
operates but
delivers no
water. Pump is not fi lled with
water. Fill the pump with water (see
installation section - Priming Pump )
Suction head is too high Reduce the suction head
Foot valve/strainer is not
submerged enough Make the suction pipe longer (max 8
metres)
Suction pipe is taking
in air Check the suction pipe and joints for
air leaks.
Suction pipe/strainer or
non-return valves are
clogged with debris Clean the suction pipe/strainer or
non-return valve
Pump is clogged with
debris Clean the pump of debris
Reduced
performance Suction head is too high Reduce suction head.
Foot valve/strainer only
partially submerged Lengthen suction pipe.
Pump shaft seal is worn
or damaged Replace defective parts
Pump is partially blocked
with debris Remove debris and fl ush pump with
clean water
Pressure switch setting
are incorrectly set or
faulty. Check and adjust pressure switch
and/or replace faulty parts.
Should problems persist, contact your nearest Onga Service Agent.
Troubleshooting