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© Copyright 2017 Zoeller
®
Co. All rights reserved.
Service Checklist
Electrical precautions. Before servicing a grinder 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.
Grinder 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.
Common Causes
Blown panel or circuit breaker fuse, low voltage, thermal overload open, defective capacitor
circuit, cutter or impeller clogged, float switch held down or defective, incorrect wiring in
control panel, water in cap assembly, check valve not installed or malfunctioning.
Incorrect voltage, impeller or cutter blocked, negative head (discharge lower than intake
of pump). Defective “off” float. Pump runs continuously at low water level. Low oil level in
motor shell. Pump running at shut-off head, check valve not installed or malfunctioning.
Debris under float assembly, defective switch, incoming sewage exceeds capacity of
pump.
Intake clogged with grease or sludge, 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 sewage.
Level control out of adjustment. Thermal overload tripping.
High water in pit. Check pump for clogging, or overload trip.
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.
General Maintenance
Repair and service should be performed by a Zoeller
Pump Company Authorized Service Station only.
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.
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 year:
• Inspect basin, report any sighting of grease accumulation.
• Check for proper and unobstructed float operation.
• Listen for proper check valve operation.
Every 8 years or 2,000 hours of operation:
• Remove pump, inspect and service using a Zoeller rebuild kit.
• Flush and clean basin.
DECLARATION OF CONFORMITY
We, Zoeller, declare under our sole responsibility that the model 815 to which this declaration relates, are in conformity with the Council
Directives on the approximation of the laws of the EC Member States relating to:
-- Machinery Directive (2006/42/EC)
-- Electromagnetic Compatibility (2004/108/EC)
Standards used: EN 809: 1998
Standards used: EN 61000-3-2, EN 61000-3-3 and EN 55014-1
-- Electrical equipment designed for use within certain voltage limits (2006/95/EC)
Standards used: EN60335-1:2002 and EN60335-2-41:2003
NOTE:
for CE-rated pumps only.
These are the original installation instructions.