Wayne ISP40 User Manual

Operating Instructions and Parts Manual

1. Power outage
2. Blown AC breaker

3. GFCI tripped
4. Low AC voltage

1. Pump fuse may be blown
2. Pump impeller may be

damaged

Low battery

1. Battery polarity is incorrect
2. Battery voltage too low

1. Lower float stuck
2. Pump too low in sump

1. Pump power cord
2. Upper float switch stuck
3. Impeller rotor jam

1. Backflow from discharge

pipe

2. Pump too low in sump
3. Clogged pump filter

1. Blocked discharge pipe

2. Partially clogged pump

filter

3. Broken thrust bearing

1. Discharged battery

2. Shorted cell battery 

1. None
2. Push AC breaker to reset. If breaker trips again, do not reset.

Have unit checked by qualified electrician

3. Reset GFCI
4. Have outlet checked by electrician

1. Replace pump fuse. Use Bussmann AGC10 or Littlefuse 312010
2. Remove impeller. Check for damage to bore or bearing

Apply AC power or replace batteries

1. Recheck battery polarity
2. Replace batteries

1. Remove filter and clean. Remove debris from float switch area
2. Place a brick under the pump

1. Check for proper installation of power cord into the PS/BC
2. Remove filter and clean. Remove debris from float switch area
3. Remove filter and clean. Remove debris from float switch area

1. Install or replace check valve

2. Place a brick under the pump
3. Remove filter and clean

1. Check for restrictions in discharge line, flood is immanent. Shut

off AC power before entering flooded area

2. Remove impeller, check for debris in inlet

3. Remove and inspect thrust bearing

1. If the battery is in otherwise good condition, it is normal for

the circuit breaker to cycle ON and OFF several times before
the battery recovers enough to allow a normal charge rate. If
this happens on a regular basis, however, the batteries may be
too large for the PS/BC and it could be damaged. Replace
batteries

2. A battery in this condition may cause the breaker to cycle

continuously. The battery will not accept a charge. Replace
both batteries

AC Power Indicator
(red light) is not on

Alarm sounds - yellow
light is on

Alarm sounds - yellow
light is on and red
light is off

Green Light is off

Pump will not stop

Pump will not start

Pump starts/stops too
often

Pump operates but
delivers little or no
water

“Click” inside PS/BC.
An overload is
indicated when you
hear a distinct “click”
from the DC circuit
breaker internal to the
PS/BC. A 3-5 minute
cooling off period
occurs before the PS/BC
resets itself. If the
overload condition still
exists, the cycle will
repeat. Regardless of
what is causing the
circuit breaker to cycle,
unattended or routine
operation in this
manner could result in
serious damage to the
PS/BC and the battery.

1. Install pump in a sump pit with

minimum size as shown in Figure 2.
Construct sump pit of tile, concrete,
steel or plastic. If the sump pit
already exists, disconnect power to
existing pump and make certain pit
is the correct size.

2. The sump pump should be located

on a solid, level foundation. Do not
place pump directly on clay, earth,
gravel or a sandy surface. These
surfaces contain small stones, gravel,
sand, etc. that may clog or damage
the pump and cause pump failure.
Remove any silt or debris from the
sump pit and surrounding area.

3. Thread check valve (not included)

into pump body. Avoid stripping or
cross threading. Do not use pipe joint
sealant.

4. The pump has a 1-1/2” NPT discharge.

If the existing piping is smaller, use
an adapter. Smaller diameter piping
will reduce the pump flow rate and
decrease its performance.

5. Connect rigid pipe to rubber boot on

check valve. Tighten hose clamps.

6. Protect electrical cord from sharp

objects, hot surfaces, oil and
chemicals. Avoid kinking the cord.
Replace a damaged cord immediately.

7. A sump pit cover must be installed to

prevent debris from clogging or
damaging the pump.

8. Fill sump with at least 6 inches of

water.

The system is designed to operate most
efficiently with sealed lead acid (SLA)
batteries at 24 volts. Two 12-volt 40-
amp hour SLA batteries provide
enough energy to pump more than
10,000 gallons of water from a
basement. Deep cycle marine batteries
or automotive style batteries can also
be used. 

Operating Instructions And Parts Manual

Sealed lead acid batteries cost slightly
more, but they can last up to 10 years.
Deep cycle marine and automotive
batteries may have a shorter life – one
to two years. Among the
manufacturers of sealed lead acid
batteries are Hawker, Panasonic,
PowerSonic, Yuasa and Eagle Picher.

The oversize battery case (included)
will accommodate two 12-volt SLA
batteries or two 12-volt deep cycle
marine batteries (up to a 27-frame
size).

Use new, identical batteries (from the
same manufacturer and of the same
capacity). When batteries wear out
replace them as a set. Chart 1
illustrates the expected performance
with various battery combinations. Do
not use batteries rated below 40 amp
hours.

Be certain that the area around the
batteries is well ventilated. Before
servicing the batteries, blow away
gasses by waving a piece of cardboard
near the batteries.

An assistant should be present or close
enough to come to your aid in the
event of an emergency. Have a
reliable source of fresh water and soap 

15”

Min.

10” Dia.

Min.

40.0

11,000

80.0

22,000

120.0

33,000

* Assumes the sump pump is lifting water 10’