© Copyright 2018 Zoeller
®
Co. All rights reserved.
GENERAL MAINTENANCE
Repair and sevice should be performed by a Zoeller
Pump Company authorized service staiton.
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.
GENERAL SYSTEM INSPECTION
Before the system is placed into operation, it should be inspected
by a qualified technician. Once in service, regular inspections are
recommended.
Wiring and grounding must be in accordance with the
National Electrical Code and all applicable local codes and ordinances.
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 when the pump is supplied with
optional moisture sensors, check the control panel's seal failure light
for a warning. Whenever the seal leak light is activated, it's indicating
that moisture is present and, the pump should be removed and serviced
in order to avoid damage to the motor.
SERVICE CHECKLIST
Condition
A. Pump will not start or run.
B. Motor overheats and trips overload.
C. Pump will not shut off.
D. Pump operates but delivers little or no water.
E. Pump starts and stops too often.
F. Red beacon comes on at control panel.
G. Grease and solids accumulate in pit around pump.
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.
Common Causes
Blown fuse, open circuit breaker, low voltage, no control voltage, thermal overload
open, defective capacitor circuit, impeller clogged, float switch held down or defec
-
tive, incorrect wiring in control panel, water in cap assembly.
Incorrect voltage, impeller restricted, negative head (discharge lower than intake of
pump). Defective “off” float. Pump runs continuously at low water level. Low oil level
in motor shell. Reverse rotation of a 3 phase pump.
Air lock, debris under float assembly, defective switch, incoming flow rate 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 or defective. Sump pit too small to handle incoming flow rate.
Level control out of adjustment. Thermal overload tripping.
High water in pit. Check pump for clogging, or overload trip. See “A”, "B" and
“D” above.
Break up solids and run pump with water running into the pit. Allow level to lower to
the pump intake. Heavy accumulations of grease may require a dish soap additive.
Continue until solids are cleared from the pit. Do not drain kitchen grease down the
sink.