Troubleshooting - Hydromatic HPGR200-D Manual Del Propietário

Troubleshooting

Hazardous voltage. Can shock, burn, or
kill. Disconnect power before attempting any service or
repair work on pump.
SYMPTOM POSSIBLE CAUSE(S)
Motor not running Motor protector tripped.
Open circuit breaker or blown fuse.
Impeller clogged or binding.
Cutter or cutter ring dull or worn.
Power cable damaged.
Bad control panel.
Defective liquid level switch.
Not enough liquid in wet well to
activate controls.
Liquid level cords tangled
Automatic controls defective
Pump runs Liquid level control cords tangled
continuously
Pump is airlocked.
Flow in matches or exceeds the
pump's capacity.
Little or no effluent Check valve plugged, stuck shut, or
delivered from installed backwards.
pump
System head excessive.
Pump suction plugged.
Wrong voltage or not wired correctly.
Pump is air locked.
Worn or damaged impeller.
Liquid level controls incorrectly
installed or defective.
Pump cycles No discharge check valve installed.
constantly
Discharge check valve stuck open.
Sewage wetwell too small.
Liquid level controls incorrectly
installed or defective.
Pump too small for inlet flow.
Hazardous cutters and unexpected starts
which can cause loss of fingers. Keep hands away from
pump suction inlet when working on or servicing pump.
CORRECTIVE ACTION
Allow motor to cool. Make sure pump is completely submerged (see
Page 4). Clear debris from volute and impeller. Check for high amp draw.
Replace fuse or reset breaker. NOTE: if circuit breaker opens repeatedly,
don't reset it. Call a licensed electrician.
Check amp draw. If it is more than twice the nameplate amps, the
impeller is locked. Bearings and shaft may be damaged. DISCONNECT
POWER, clear debris from volute, impeller, and cutter as needed.
DISCONNECT POWER, pull pump and inspect cutter and cutter ring.
Replace if worn or dull.
Resistance between power cable and ground should be infinity. If any
reading is less than infinity, call a licensed electrician.
Inspect control panel wiring. Call a licensed electrician.
With switch disconnected from power, check continuity through switch
while activating liquid level switch. Replace switch if necessary.
Allow the liquid to rise several inches above the switch-on level.
Untangle cords for free operation.
Try running pump in manual mode. If it runs, the automatic control is
at fault.
Untangle cords for free operation.
Stop pump for about one minute, then restart. Repeat stopping and starting
until the airlock clears. If the airlock persists, DISCONNECT POWER, pull
the pump and drill a 1/8" hole in the discharge pipe between the pump
discharge and the check valve.
A larger pump or more pumps may be needed.
Make sure check valve is installed correctly (flow arrow should point
away from pump) and functioning correctly.
Consult dealer.
DISCONNECT POWER, pull pump, inspect, and clear as needed.
Check pump's rotation; check nameplate voltage against supply voltage
(they must match); consult a licensed electrician.
Stop pump for about one minute, then restart. Repeat stopping and starting
until the airlock clears. If the airlock persists, DISCONNECT POWER, pull
the pump and drill a 1/8" hole in the discharge pipe between the pump
discharge and the check valve.
DISCONNECT POWER, pull pump and inspect impeller.
Replace if necessary.
Reposition or replace as necessary.
Install discharge check valve.
Repair or replace check valve as necessary.
Consult dealer.
Reposition or replace as necessary.
Consult dealer about larger pump or second pump.
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