Troubleshooting Guide; Water Pressure - Basement Sentry STWB140 Manual Del Usuario

TROUBLESHOOTING GUIDE

1. Pump will not start – Control valve is under
tightened. Refer to control valve adjustment
for adjustment instructions.
2. Pump will not shut off – Control valve is over
tightened. Refer to control valve adjustment
for adjustment instructions.

WATER PRESSURE:

40 PSI minimum with valve open.
80 PSI maximum with valve open.
100 PSI maximum with valve closed.
CONDITION
PUMP WILL NOT
A
START OR RUN
PUMP STARTS
B
TOO SOON
PUMP WILL NOT
C
SHUT OFF
PUMP OPERATES
BUT DELIVERS
D
LITTLE OR NO
WATER
POSSIBLE CAUSE
Inadequate incoming
water pressure
Excessive incoming
water pressure
Debris around Intake
Float hung up on pit or
primary pump
Control valve is under-
tightened
Float valve is positioned
too low
Float is obstructed
Internal valve diaphragm
vent hole is plugged with
debris
Control valve is over-
tightened
Debris around intake
Inadequate incoming
water pressure
Blockage in discharge
pipe
Foot valve above water
level
Vertical lift too high
EFFICIENCY:
The pumping capacity increases with household
water pressure and flow.
At an eight-foot static head and a supply pressure
of 40 PSI at water supply inlet with water flowing,
it takes one (1) gallon of supply water to remove
one and a half gallons from the sump. As the
supply pressure increases with the static head
constant, less supply water is required.
REMEDY
Check incoming water line for closed valve, low
water pressure or clogged filter/strainer.
Install regulator and reduce pressure below
100 PSI with valve closed.
Clear debris from pit and foot valve strainer.
Move pumps so that the floats move freely and
do not contact pit, piping or each other.
Refer to section on control valve adjustment.
Refer to section on float valve installation.
Inspect float operation and correct problem.
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.
Refer to section on control valve adjustment.
Clear debris from pit and foot valve strainer.
Check incoming water line for closed valve or
low water pressure.
Remove pipe and flush out debris.
Adjust Float - Refer to section on float valve
installation.
Change discharge piping or contact technical
service.
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