Sears CRAFTSMAN 572.826121 User manual

CRAFTSMAN
BATTERY OPERATED
BACKUP SUMP PUMP
owner’s
manual
MODEL NO.
572.826121
CAUTION:
Read all instructions
carefully before starting
the installation.
Save this Manual for
future reference.
F642-9201 (10/18/94) PRINTED IN U.S.A. SEARS CANADA INC. TORONTO CANADA M5B 2B8
• Installation
• Operation
• Repair Parts

Carefully read and follow all safety instructions in this
manual or on pump.
This is the safety alert symbol. When you see this
symbol on your pump or in this manual, look for one
of the following signal words and be alert to the potential
for personal injury!
DANGER warns about hazards that will
cause serious personal injury, death or major property
damage if ignored.
WARNING warns about hazards that can
cause serious personal injury, death or major property
damage if ignored.
CAUTION warns about hazards that will or
can cause minor personal injury or property damage if
ignored.
The word NOTICE indicates special instructions which
are important but not related to hazards.
1.To avoid risk of serious bodily injury and property
damage, read safety instructions carefully before
installing pump.
2.Follow local and/or national plumbing and electrical
codes when installing pump. A ground fault circuit
interrupter (GFCI) is recommended for use on any
electrical appliance submerged in water.
3.Use this pump only for backup sump pump duty in a
residential application. It is not designed as a primary
sump pump.
4. Hazardous Voltage. Can cause severe or
fatal electrical shock. Do not plug in or unplug battery
charger while standing on a wet floor or in water. Be
sure one hand is free when plugging in or unplugging
charger. If basement floor is wet, disconnect power to
basement before walking on floor.
5.Do not lift pump by electrical cord.
6.Pump water only with this pump.
7.Do not run pump dry. To do so will damage seals and
can cause leaking and property damage.
8.Pump is permanently lubricated at the factory. Do not
try to lubricate it!
9.Keep battery charger and battery box in a dry, cool,
well ventilated area.
10.To avoid danger of fire or explosion, keep sparks and
flame away from battery.
11. Battery acid is corrosive. Do not spill on
skin or clothing. Wear eye protection when working
on battery.
12.Maximum vertical pumping distance is 15 feet (4.6M).
13.Make sure sump is clear of debris.
2
CONTENTS
INTRODUCTION/WARRANTY.......................................2
SAFETY...........................................................................2
PERFORMANCE..............................................................3
CHARGER OPERATIONS................................................3
BATTERY REQUIREMENTS.............................................4
INSTALLATION/OPERATION.........................................4
ELECTRICAL....................................................................5
SERVICE/TROUBLESHOOTING......................................6
PARTS.............................................................................7
INTRODUCTION
Please take a few minutes to read our instructions before
installing your Backup Sump Pump. It will help to assure
perfect installation and help you avoid needless service
expenses.
LIMITED WARRANTY
ALL PARTS.......................TWO (2) YEARS
ALL LABOUR .....................ONE (1) YEAR
Sears will repair or replace the pump free of charge if it fails due to manufacturing defects.
Damage caused by improper installation is not covered by this warranty.
This warranty is in addition to any statutory warranty.
For service return pump to the nearest Sears outlet.
SEARS CANADA INC. TORONTO M5B 2B8
RULES FOR SAFE INSTALLATION AND OPERATION
BASIC TOOLS AND MATERIALS NEEDED
Pipe Wrenches Screwdriver Hacksaw 1-1/4" Check Valve
Adjustable Wrench Teflon Tape Knife 12-volt Battery

3
CHARGER OPERATION
Backup pump will start automatically when sump water
level rises far enough to trip float switch. After a delay of
about 4 seconds, alarm will sound. Silence alarm by
pushing ALARM RESET button. In normal (switch ac-
tuated) operation, alarm is locked out until about 4
seconds after float switch has dropped to OFF position;
cycle can then begin again.
Test alarm by pushing ALARM RESET button when alarm
is not sounding. Alarm will then sound as long as button is
held down. Pushing ALARM RESET button to test alarm
overrides lockout, so alarm can be tested at any time.
If alarm sounds, check operation of primary pump, which
may need service. If battery backup operation is due to a
power outage, alarm will sound, but no service is likely to
be required to primary pump.
Battery charger has capacity to run pump and charge
battery at the same time as long as power to the charger is
not interrupted. If power to charger circuit is interrupted,
the length of time that the backup pump will run depends
on the Ampere-hour capacity of the battery used.
NOTICE: Charger will not start to charge battery unless
battery voltage is above 4 volts. If battery voltage is below
4 volts, charger will not start. In many cases, a battery that
has been exhausted (for example, after an extended power
outage) will self-regenerate far enough to allow charger to
start. This process may take several hours.
After power is restored, charger will automatically re-
charge battery fully in about 6 hours.
If battery has not reached a satisfactory voltage after 24
hours of charging, alarm will sound. In this case alarm
cannot be reset. Possible causes are:
1. Extended operation during power outage.
2. Battery depleted to less than 4 volts, extending
charging cycle to more than 24 hours.
3. Defective battery.
4. An intermittent open circuit (such as a loose
connection to battery clamp) can also cause alarm
to sound.
After restoring power or replacing battery, alarm can be
reset.
TABLE I Performance Chart
VERTICAL PUMPING DISTANCE
5 FEET 10 FEET 15 FEET
Battery Size 27M 24M 27M 24M 27M 24M
Gallons Per Hour 1,170 1,170 768 768 120 120
Hours Available 7.0 6.0 9.0 8.0 10.5 9.0
Total Gallons Pumped 7,750 6,888 6,680 5,820 1,160 1,116
1,5 METERS 3,0 METERS 4,5 METERS
Battery Size 27M 24M 27M 24M 27M 24M
Litres Per Hour 4425 4425 2905 2905 450 450
Hours Available 7.0 6.0 9.0 8.0 10.5 9.0
Total Litres Pumped 29335 26070 25285 22030 4390 4220
GENERAL INFORMATION
The Battery-Powered Back-up Sump Pump is not a sub-
stitute for your primary sump pump. It is designed as a
backup pump to pinch-hit for your primary sump pump
during a power outage or other problem which prevents
normal operation. Do not use it to pump flammable
liquids or chemicals. If pumping salt water, flush the
pump with clear water after use.
Keep battery charger dry and protected from damage.
In an emergency (such as an extended power outage)
which depletes the system battery, your automobile
battery may be temporarily substituted. Be sure to replace
the system battery as soon as possible.

BATTERY REQUIREMENTS
Hazardous electrical current. Can cause
severe burns and start a fire if battery terminals are short
circuited. Install battery in box. To prevent accidental
shorting across battery terminals, strap cover securely on
battery box. Do not leave battery uncovered. Do not
allow children to play around sump pump installation.
Your Backup Sump Pump depends on the battery used
with it for power. The better the battery, the better the
performance of the pump. We recommend use of a Sears
DieHard Size 27M or 24M Deep-Cycle Marine battery.
This battery will perform well for many hours and stands
up well to long periods of little or no use.
In an emergency a Sears DieHard Size 27M or 24M stan-
dard automobile battery may be used. However, an auto-
motive battery may require charging after only 1 to 2
hours of continuous use, and the repeated charging cycles
may cause early plate failure in the battery.
Use only a new, fully charged battery that will fit in the
battery box (maximum size 12-5/8" long, 7" wide and 9-
3/8" high (320.7mm x 177.8mm x 238mm) including
terminals).
PUMP INSTALLATION and OPERATION
NOTICE: We recommend a trial fitting of all components
before gluing anything. This will allow you to check pump
mounting height, float switch clearance, etc., while
adjustments can still be easily made.
1.Mark side of sump six inches (154mm) down from top.
2.Fill sump until primary sump pump starts; normal high
water level should not be above mark made in step 1.
If it is higher, backup float switch may not swing far
enough for proper operation. To lower high water
level, adjust switch on primary sump pump. See
primary pump owner’s manual.
3.Drain sump. Measure down 11 inches (279.4mm)
from top of sump; mark this point on side of sump.
Install tee with center of threaded inlet at least this far
below top of sump to allow sufficient room for float
switch to swing (see Figure 1).
4.Make sure that installation will not interfere with
primary sump pump operation as follows:
A. Backup pump installation must not interfere with
primary sump pump float switch swing.
B. Normal high water level must never be high
enough to start backup sump pump.
C. NOTICE: To prevent recirculation back through
pipe, install check valve between primary sump
pump discharge and backup pump mounting tee.
Mount check valve correctly. Flow must be toward
backup pump tee.
5.Cut rigid discharge pipe from primary sump pump to
length. Use PVC piping. Tee supplied is 1-1/2" slip fit;
if necessary use 1-1/4" bushings supplied.
NOTICE: Use any tee that fits sump pump discharge
line; the adapter that is supplied (Key No. 10, Page 7)
will fit any galvanized or plastic 1-1/4" tee.
6.Thread adapter (Key No. 10) into tee. When installed,
molded-in ‘up’ should be on top.
7.Install check valve (Key No. 8, Page 7) in adapter. Tab
on check valve fits into notch at top of adapter.
8.For trial assembly, slip pump into check valve to
check pump mounting height and to make sure that
there is no interference with float switch operation on
either pump; be sure floats will not rub on side of
sump, catch between pump and sump wall, interfere
with each other, etc.
9.Remove pump from adapter; remove tee.
10.Using PVC glue, permanently reinstall tee in primary
sump pump discharge pipe.
Hazardous fumes. Follow cement manu-
facturer’s instructions. Use PVC cement only in a well
ventilated place away from fire or flame.
11.Put clamp on adapter; leave loose. Mount check valve
in adapter; thread assembly into tee.
12.Slip pump into check valve. Tighten clamp.
13.Make sure battery is fully charged; then check opera-
tion by disconnecting power to primary sump pump
and filling sump until Backup Sump Pump starts. Run
Backup Pump through one complete cycle.
4
Check
Valve
Grounded
Electrical
Outlet
"Turn On"
Water Level
12" Min.
(305mm)
7" Min.
(178mm)
1380 1194
Tether Length 2"
(51mm)
TOP VIEW
Check
Valve
Figure 1 – Typical Installation

5
ELECTRICAL CONNECTIONS
Hazardous voltage. Can cause serious or
fatal electrical shock. Never operate charger unless it is
grounded.
The charger has a three-prong electrical plug. Use it only
in a grounded, grounding type outlet. Do not remove the
third (ground) prong. Do not use an extension cord.
If your outlet is not grounded, install a copper wire (at
least 14 gauge) from the outlet box to a cold water pipe.
Use ground clamp on pipe. BE SURE that the cold water
pipe used has metal continuity to electrical ground.
CHARGER/BATTERY INSTALLATION
1. Connect charger as shown in Figure 2.
A. Connect Positive (+) lead from charger to positive
battery post.
B. Connect Negative (–) lead from charger to negative
battery post.
C. Third lead from charger is factory connected to
lead from pump motor/float switch.
NOTICE: If charger is connected backwards, pump
will not operate properly, battery will not charge,
and “Charging” light will not come on. However,
no actual damage will be done to unit.
2. Plug in power cord to a 115-125 Volt AC outlet deliv-
ering at least 2 amps. Do not use a switch controlled
outlet. Mark circuit in main power panel “Backup
sump pump power supply; do not turn off”.
NOTICE: Alarm may sound when unit is first installed.
If so, reset it.
3. With charger properly connected and plugged in and
power ON, red light on front panel will be ON (See
Figure 3). If a battery has been connected to charger,
either yellow or green light on panel will also be on
(see Figure 3).
A. If battery is fully charged, green light (CHARGED)
will be ON.
B. If battery is being charged, yellow light (CHARG-
ING) will be ON.
4. When charger is plugged in, battery is connected, and
unit is operating properly, two lights will always be on
– the red POWER ON light and either the yellow
(CHARGING) light or the green (CHARGED) light.
NOTICE: During normal operation, the charger con-
stantly monitors the battery voltage, which can cause
the green and yellow lights to flash alternately. The
rate at which they flash may vary, depending on the
condition of the battery.
BATTERY MAINTENANCE
NOTICE: To protect battery case from chipping and
gouging, do not let battery sit on concrete floor. Install
battery on a shelf or protective pad (plywood, 2x4s, etc.).
Always install battery in a dry location that is protected
from flooding.
Every three months, check battery as follows to maintain
battery in best condition:
1. Unplug battery charger.
2. On batteries with removable top caps, measure
specific gravity of the electrolyte. Use a hydrometer
(available at auto parts stores). If the specific gravity of
any cell is less than 1.225 or if there is more than .050
variation between cells, replace the battery.
3. Check electrolyte level and refill as needed.
4. Check battery terminals and clamps for tightness and
corrosion. Clean and tighten as needed.
5. Plug in battery charger.
Figure 2 – Wiring Connections
+
–
White
Black
Negative
Black w/
Red Tracer
Blue
Positive
Battery Clamp
Negative
Battery Clamp
Brown Sensor
White
Battery Charger
POWER ON
CHARGED
CHARGING
VOLTSAMPS/
Positive
Fuse
Holder
Float
Switch
Backup
Pump
648 0993
POWER ON
CHARGING
CHARGED
Figure 3 – Battery Backup Control Panel

TROUBLESHOOTING
Pump won’t run.
1. Check all connections.
2. Check for low or defective battery.
3. Check that automatic switch is free to swing up and
down.
4. Blown fuse in switch circuit. Unplug pump and check
to see if impeller is free to turn. If impeller is locked,
remove the housing around the impeller and remove
the obstruction. Reassemble pump and reconnect.
Replace fuse.
Motor hums but pump won’t run:
1. Check for low or defective battery.
Pump runs but pumps very little or no water:
1. Make sure a check valve is installed and functioning
between primary pump discharge and Backup Sump
Pump tee.
2. Check for obstruction in discharge pipe.
3. Discharge pipe length and/or height exceeds capacity
of pump. See Table I, Page 3, for pump capacity.
4. Check for low or defective battery.
Pump cycles too frequently:
1. Tether length too short on automatic float switch. Make
sure that tether is at least 2" (51mm); see Figure 1.
2. Main check valve located between discharge of primary
pump and the Backup Sump Pump tee or check valve
not installed or working properly. Install or repair as
required.
SWITCH REPLACEMENT
1. Unplug battery charger from wall outlet.
2. Disconnect both battery clamps from battery
terminals.
3. Unbolt black switch wire from battery clamp.
4. Unplug fuse holder in white wire; save fuse.
5. Make a note of tether length (see Figure 1) before
loosening cord clamp.
6. Remove cord clamp assembly (Key No. 3, Page 7)
from pump and slide mounting block off of steel band.
Loosen screw in block and pull switch cord out of
clamp. Pull new switch cord through clamp and
tighten screw. Make sure tether length is the same as
old switch’s tether.
7. Strip insulation off of white wire on new switch,
leaving 3/8" (9.5mm) bare wire exposed at the wire
end (see Figure 4).
8. Insert stripped wire end in small end of fuse holder
half; crimp holder onto wire and check crimp for
tightness (Figure 5).
NOTICE: Be sure that fuse holder half which you are
installing will mate with fuse holder half on pump
wire.
9. Insert fuse into holder and snap halves of housing
together (Figure 6).
10.Remount block on band and cord clamp assembly on
pump.
11.Strip black switch wire back 3/8" (9.5mm) from end of
wire. Crimp wire terminal onto end of wire and check
for tightness.
12.Bolt black switch wire onto battery terminal clamp.
13.Reinstall battery clamps:
A. Black switch wire clamps to positive battery
terminal.
B. White pump wire clamps to negative battery
terminal.
NOTICE: DO NOT reverse terminal connections.
14.Turn pump upside down; unclip and remove screen.
Do not remove screw-mounted bottom plate. Lift
switch to momentarily ”bump” pump. Check for
correct operation and rotation (pump must rotate
counter-clockwise when looking at end of shaft -
Figure 7). If not, reverse wires to battery and recheck.
15.Replace screen.
16.Plug in charger to wall outlet.
17.Fill sump with water and check switch action. Adjust
tether if necessary.
DO NOT test run pump for more than 5
seconds without water in it. Running pump dry for
extended periods could damage pump and voids
warranty.
6
Figure 4
Figure 5
Figure 6
Figure 7

7
SEARS Battery Backup Sump Pump
Model 572.826121
REPAIR PARTS LIST
Key No. Part No. Part Description
1 PS217-5E Switch Assembly #
2 PS17-41 Pump Complete***
3 U197-10 Cord Clamp Assembly
4 U17-1148 Fuse Holder
5 U17-1149 15-Amp Time-Delay Fuse (2 supplied†)
6A ** Wire Terminal (4 Req.)
6B ** Battery Terminal Clamps (2 Req.)
* PS17-43 Battery Case (includes strap and strap brackets)
7 PS17-58 Charger***
8 PS22-1 Check Valve
9 ** Hose Clamp 1" min. - 2" max. S.S.
10 PS78-3P Pipe Adapter
11 U78-846P Tee 1-1/2 x 1-1/2 x 1-1/4 PVC
12 U78-876P Reducer Bushing (2 Req.)
* PS4-19P Pump Base Plate
* F642-9201 Owner’s Manual
# When ordering, also order Key Nos. 4 (Fuse Holder) and 5 (Fuse) required for installation.
* Not illustrated.
** Standard Hardware Item; purchase locally.
*** No component parts available for pump or battery charger.
† Second fuse is supplied as spare.