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3
4. A chirping sound from the control
box will accompany the red light,
indicating that the battery may
require attention or replacement.
Voltage is only an indicator of
battery condition and may not reflect
the true condition of the battery. See
Maintenance for instruction on
assessing battery condition.
5. A single thirty-second tone will sound
when power to the system is
interrupted. The unit will reset
automatically when power is
restored. A three-second tone will
sound every time the pump starts.
Always disconnect the
electrical supply before
attempting to install,
service, relocate or perform any
maintenance. If the power source is out
of sight, lock and tag in the open (off)
position to prevent unexpected power
application. Failure to do so could result
in fatal electrical shock. Only qualified
electricians should repair this unit.
Improper repair could result fatal in
electrical shock.
1. Once a month, check battery
condition.
2. Unplug the wall charger.
3. For batteries with top caps that can
be removed, the electrolyte level
should be checked and filled to
manufacturer’s specifications. The
charge for each cell should be
checked with a hydrometer. A
specific gravity of 1.265 indicates the
battery is at full charge. If the specific
gravity of any of the cells varies more
than .050, the battery should be
replaced.
NOTE: An inexpensive hydrometer
can be purchased at an automotive
parts dealer.
4. Inspect the terminals and clamps for
corrosion and tightness. Clean and
tighten as required.
5. Unplug the main pump and fill sump
with water until back up pump turns
on. Repeat process two times to be
sure pump is operating normally.
6. If pump operates normally, plug
charger into wall outlet, turn on
main pump. If pump fails to operate
normally, see Troubleshooting guide
and correct problem. Repeat step 5.
Troubleshooting Chart
Symptom Possible Cause(s) Corrective Action
Pump won’t run
Motor hums but
pump won’t run
Pump runs but
pumps very little
or no water
Pump cycles too
frequently
1. Connections not secure
2. Low or defective battery
3. Float switch unable to swing up and
down as needed
4. Defective or blown fuse
1. Defective battery
2. Impeller is locked
1. Check valve missing or improperly
installed
2. Obstruction in discharge pipe
3. Pump not rotated 30˚
4. Pump air locked
5. Discharge pipe length and/or height
exceeds capacity of pump
6. Low or defective battery
1. Tether length too short on float
switch
2. Main check valve located between the
discharge of the primary pump and
the Standby Sump Pump tee fitting or
the Standby Sump Pump flapper valve
not installed or working properly
1. Check all connections
2. Check battery and replace if low or defective
3. Check that float switch tether is long enough to allow pump to
operate
4. Check internal fuse located inside the control box. Pull the charger
from the wall outlet and remove. If the fuse is blown, replace it with
a 15 amp automotive type fuse
1. Check battery and replace if low or defective
2. Unplug pump and check to see if impeller is free to turn. If impeller
is locked, remove the 4 screws on the bottom of the pump to release
the housing around the impeller. Remove the obstruction.
Reassemble pump and reconnect
1. Check to make sure a check valve is installed and functioning
between primary pump discharge and Standby Sump Pump tee
fitting
2. Check for obstruction and clear if necessary
3. Check that pump is rotated 30˚ in tee fitting as shown in Figure 3
4. The impeller housing has a small hole on its side. This hole must be
open for the pump to prime. With the pump unplugged, remove the
4 screws on the bottom of the pump to release the housing around
the impeller. Clean out the hole and replace cover
5. If discharge is too high, a separate line may be required with a lower
discharge height
6. Check battery and replace if low or defective
1. Tether length should be at least 2”. Adjust if necessary
CAUTION: Ensure tether will swing freely without obstruction
2. Install check valve or repair as required
Operation (Continued)
Maintenance
ESP15