Troubleshooting - Xylem GOULDS 1GD Serie Manuel D'utilisation

TROUBLESHOOTING

TROUBLESHOOTING
FAILURE TO DISCONNECT AND LOCKOUT ELECTRICAL
WARNING
POWER BEFORE ATTEMPTING ANY SERVICE CAN CAUSE
Hazardous
SHOCK, BURNS OR DEATH.
voltage
SYMPTOM
MOTOR NOT RUNNING
NOTE: If circuit breaker
"OPENS" repeatedly,
DO NOT reset. Call
qualified electrician.
a) Manual operation
b) Automatic operation
NOTE: Check the pump in
manual mode first to confirm
operation. If pump operates,
the automatic control or
wiring is at fault. If pump
does not operate, see above.
PUMP WILL NOT
TURN OFF
LITTLE OR NO LIQUID
DELIVERED BY PUMP
PUMP CYCLES
CONSTANTLY
10
PROBABLE CAUSE
Motor thermal protector tripped.
Open circuit breaker or blown fuse.
Pump impeller binding or jammed.
Power cable is damaged.
Inadequate electrical connection
in control panel.
No neutral wire
connected to control panel.
Inadequate electrical connection
in control panel.
Defective liquid level switch.
Insufficient liquid level to
activate controls.
Liquid level cords tangled.
Liquid level cords tangled.
Pump is air locked.
Influent flow is matching pump's
discharge capacity.
Check valve installed backwards,
plugged or stuck closed.
Excessive system head.
Pump inlet plugged.
Improper voltage or wired
incorrectly.
Pump is air locked.
Impeller is worn or damaged.
Liquid level controls defective
or improperly positioned.
Discharge check valve inoperative.
Sewage containment area too small.
Liquid level controls defective or
improperly positioned.
Influent excessive for this size
pump.
RECOMMENDED ACTION
Allow motor to cool. Insure minimum pump
submergence. Clear debris from casing and impeller.
Determine cause, call a qualified electrician.
Check motor amp draw. If two or more times higher
than listed on pump nameplate, impeller or cutter is
locked, motor bearings or shaft is damaged. Clear
debris from cutter casing and impeller, consult with
dealer.
Resistance between power leads and ground should
read infinity. If any reading is incorrect, call a
qualified electrician.
Inspect control panel wiring. Call a qualified
electrician.
With switch disconnected, check continuity while
activating liquid level switch. Replace switch, as
required.
Allow liquid level to rise 3" to 4" (76 mm - 101 mm)
above turn-on level.
Untangle cords and insure free operation.
Untangle cords and insure free operation.
Shut off pump for approximately one minute, then
restart. Repeat until air lock clears. If air locking
persists in a system with a check valve, a
hole may be drilled in the discharge pipe approximately
2" (51 mm) above the discharge connection.
Larger pump may be required.
Check flow arrow on valve and check valve
operation.
Consult with dealer.
Inspect and clear as required.
Check pump rotation, voltage and wiring.
Consult with qualified electrician.
See recommended action, above.
Inspect impeller, replace as required.
Inspect, readjust or replace as required.
Inspect, repair or replace as required.
Consult with dealer.
Inspect, readjust or replace as required.
Consult with dealer.
3
⁄ " (4.8 mm)
16