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Repair and service must be performed by a firm approved by
Zoeller Company to repair a pump with an explosion-proof motor in accordance
to the guidelines listed in Policy # ZM1462-3c. Contact the Zoeller Product Support
Department for additional information.
If the motor housing, seal cavity or cord cap is disassembled
or repaired by a firm not approved to work on explosion-proof motors, the
explosion proof rating is void and the cCSAus approval tag MUST BE REMOVED
FROM THE PUMP.
SAFETY PROCEDURES
For your protection, always disconnect pump and panel
from its power source before handling.
Never enter the basin until it has been properly vented
and tested. Any person entering a basin should be wearing a harness
with safety rope extending to the surface so that they can be pulled out
in case of asphyxiation. Sewage water gives off methane and hydrogen sulfide
gases, both of which can be highly poisonous.
Installation and checking of electrical circuits and hardware should be performed
by a qualified electrician.
Pump is never to be lifted by power cord.
Unit must be cleaned and disinfected, inside the pumping
chamber and all exterior surfaces, prior to servicing.
Electrical precautions. Before servicing the pump, always shut off the main power circuit. Make sure you are wearing insulated protective
sole shoes and not standing in water. Under flooded conditions, contact your local electric company or a qualified licensed electrician for disconnecting
electrical service to the pump prior to removal.
Pumps contain oil which becomes pressurized and hot under operating conditions. Allow 2-1/2 hours after shut down before
servicing pump.
Condition
A. Pump will not start or run.
B. Motor overheats and trips on overload.
C. Pump will not shut off.
D. Pump operates but delivers little or no water.
E. Pump starts and stops too often.
F. Large red flashing light comes on at control box.
G. Grease and solids accumulate in pit around pump.
GENERAL MAINTENANCE
GENERAL SYSTEM INSPECTION
Before the system is placed into operation, it should be inspected by a qualified
technician.
LUBRICATION PROCEDURES
No lubrication is required.
If pumps are to be stored for more than six months, refer to short term storage
procedure in the Operation section.
PREVENTIVE MAINTENANCE
Preventive maintenance is recommended to ensure a long service life from the
product. Provided is a suggested maintenance schedule.
Every six months:
• Check for proper and unobstructed float operation.
• Listen for proper check valve operation.
Every 5 years or 10,000 hours of operation:
• Remove pump, inspect and service using a Zoeller rebuild kit.
• Flush and clean basin.
DOUBLE SEAL PUMPS
Double seal pumps offer extra protection. During every inspection of the unit,
check the control panel seal failure for a warning. Whenever the seal leak is
activated, indicating that the lower seal has failed, the pump should be removed
and serviced in order to avoid damage to the motor.
SERVICE CHECKLIST
Common Causes
Blown panel or circuit breaker fuse, low voltage, thermal overload open,
capacitor circuit, impeller clogged, float switch held down or defective,
incorrect wiring in control panel, water in cap assembly.
Incorrect voltage, impeller blocked, negative head (discharge lower
than intake of pump). Pump runs continuously at low water level. Low
oil level in motor shell.
Air lock, debris under float assembly, defective switch, incoming
sewage exceeds capacity of pump.
Intake clogged with grease or sludge, pump air locked (clear vent hole), low
or incorrect voltage, clogged discharge line, operating near shut-off head.
Check valve stuck open. Sump pit too small to handle incoming sewage.
Level control out of adjustment. Thermal overload tripping.
High water in pit. Check pump for clogging, or overload trip. See "A"
and "D" above.
Break up solids and run pump with water running into the pit. Allow level
to lower to the pump intake. Continue until solids are cleared from the
pit. Do not drain kitchen grease down the sink.
© Copyright 2023 Zoeller
Co. All rights reserved.
®
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Wiring and grounding must be in accordance with the
National Electrical Code and all applicable local codes and ordinances.
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