Maintenance And Troubleshooting - Liberty Pumps LSG200 Serie Manual De Instalación

Maintenance and Troubleshooting

RISK OF ELECTRIC SHOCK
 Accidental contact with electrically live parts, items, fluid, or
water can cause serious injury or death.
 Always disconnect pump(s) from power source(s) before
handling or making any adjustments to either the pump(s),
the pump system, or the control panel.
RISK OF SERIOUS INJURY OR DEATH
 Wear adequate Personal Protective Equipment when working
on pumps or piping that have been exposed to wastewater.
Sump and sewage pumps often handle materials that can
transmit illness or disease upon contact with skin and other
tissues.
 Do not enter a pump basin after it has been used. Sewage
and effluent can emit several gases that are poisonous.
 Verify correct 3-phase pump rotation before retuning to
service.
Problem
Damaged power or control cord.
Control panel selector switch in OFF position.
Blown control circuit transformer fuse.
Tripped circuit breaker, tripped GFCI, blown fuse,
or other interruption of power.
Improper voltage.
Float switch unable to move to the PUMP ON
position due to interference in basin or other
obstruction.
Insufficient liquid level.
Pump does not start.
Defective float switch.
Obstructed impeller or volute.
Loose wiring connections.
Thermal overload tripped.
Water inside motor.
5647000K
Maintenance
Pump should be checked quarterly for corrosion and wear. As the
motor is oil-filled, no lubrication or other maintenance is required.
Severe operating environments will require more frequent checks.
If replacement lubrication is required, use ISO VG 10 turbine oil.
Use approximately 0.8 gallons to just cover the upper bearing of
the motor.
For any issues that are not resolvable, contact Liberty Pumps for
further assistance.
Troubleshooting
No repair work shall be carried out during the warranty period
without prior factory approval. To do so may void the warranty.
Liberty Pumps, Inc. assumes no responsibility for damage or injury
due to disassembly in the field. Disassembly, other than at Liberty
Pumps or its authorized service centers, automatically voids
warranty.
Table 3. Troubleshooting Matrix
Possible Cause
Copyright © Liberty Pumps, Inc. 2019 All rights reserved.
Corrective Action
Replace as needed.
Set selector switch to Hand or Auto position.
Replace fuse.
Reset tripped circuit breaker, reset GFCI, replace blown
fuse with properly sized fuse, check that the unit is
securely plugged in, investigate power interruption.
Have an electrician check all wiring for proper
connections and adequate voltage and capacity.
Position the pump or float switch so that it has adequate
clearance for free movement.
Verify the liquid level is allowed to rise enough to
activate float switch(es).
Replace float switch.
Remove obstruction.
Check and tighten all connections.
Wait for pump to cool to operating temperature.
Check/replace oil, oil plug, and sealing washer as needed.
Damaged lower lip seal or mechanical seal. Replace seal.
Replace oil as needed.
Damaged O-ring between oil chamber and motor plate.
Return to authorized repair facility for O-ring and oil
replacement.
Damaged cord. Replace as needed.
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