6
018586
TOT
AL
DYNAMIC HEAD
FLOW PER MINUTE
15
LITERS 0
GALLONS
20
40
5
10
0
2
5
25
80
60
20
PUMP PERFORMANCE
CURVE
MODEL 503
FEET
METERS
4
10
15
6
45
30
25
20
40
35
8
10
12
14
20 PSI
40 PSI
60 PSI
80 PSI
PERFORMANCE CHARACTERISTICS
CONDITION
POSSIBLE CAUSE
REMEDY
A PUMP WILL NOT START
OR RUN
Inadequate incoming water
pressure.
Check incoming water line for closed valve, low water
pressure or clogged filter/strainer.
Excessive incoming water
pressure.
Install regulator and reduce pressure below 100 PSI
with valve closed.
Debris around Intake.
Clear debris from pit and foot valve strainer.
Float hung up on pit or primary
pump
Move pumps so that the floats move freely and do not
contact pit, piping or each other.
B PUMP STARTS TOO SOON Float "ON" point is adjusted too low. Refer to STEP 2.
C PUMP WILL NOT SHUT
OFF
Float is obstructed.
Inspect float operation and correct problem.
Float "OFF" point is adjusted too low. Refer to STEP 2.
Foot Valve above water level.
Adjust Float - Refer to STEP 2.
Internal valve diaphragm vent
hole is plugged with debris.
Turn off water supply to pump and back on repeatedly
to dislodge debris. If this process does not remedy
the problem, service pump to clear debris or replace
valve assembly.
Water level in sump pit was
below foot valve when pump was
activated.
Turn off water supply to pump. Fill pit with water until
the foot valve is submerged. Turn on water supply
and activate float by hand. Allow pump to run for 3-5
seconds and release float before the foot valve is
above the water level. Pump should shut off normally.
D
PUMP OPERATES BUT
DELIVERS LITTLE OR NO
WATER
Debris around Intake.
Clear debris from pit and foot valve strainer.
Inadequate incoming water
pressure.
Check incoming water line for closed valve or low
water pressure.
Blockage in discharge pipe.
Remove pipe and flush out debris.
Foot Valve above water level.
Adjust Float - Refer to STEP 2.
Vertical lift too high.
Change discharge piping or contact technical service.
Troubleshooting Guide
© Copyright 2015 Zoeller
®
Co. All rights reserved.
Pump capacity varies due to: Inlet Water Pressure, Working Water Pressure, Discharge
Elevation, Number of Pipe Fittings, Inlet and Outlet Pipe Size, Fluid Viscosity, Degree of Water
Clarity, Water Temperature. The flow rates in the chart are approximate values.
NOTE: Some districts may require a reduced pressure principle backflow preventer per ASSE
Standards 1013. Check Local Codes.
Sump water is non-potable. To reduce the risk of contamination of the potable
water supply, the Home Guard
®
Max must be installed with a listed backflow
device suitable for the installation, in accordance with the local plumbing code, such as a
reduced pressure principle backflow preventer (RP). Alternately, consult the local plumbing
and health codes or the authority having jurisdiction for guidance on cross-connection and
backflow protection requirements.
TOT
AL
DYNAMIC HEAD
FLOW PER MINUTE
15
LITERS 0
GALLONS
20
40
5
10
0
2
5
25
80
60
20
PUMP PERFORMANCE
CURVE
MODEL 503
FEET
METERS
4
10
15
6
45
30
25
20
40
35
8
10
12
14
20 PSI
40 PSI
60 PSI
80 PSI
TOTAL DYNAMIC HEAD/FLOW
PER MINUTE
DEWATERING ONLY
