Sears 390.260251 User manual

OWNER’S
MANUAL
Model No.
390.260251
CAUTION:
Read and Follow
All Safety Rules and
Operating Instructions
Before First Use of
This Product.
Save This Manual For
Future Reference.
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.
• Safety Instructions
• Installation
• Service
• Repair Parts
PRINTED IN U.S.A.
PORTABLE UTILITY PUMP
Form No. F642-9302 (Rev. 8/28/95)

CONTENTS
Introduction ........................................................................2
Warranty..............................................................................2
Safety Rules..........................................................................2
Installation........................................................................3-4
Service.................................................................................5
Troubleshooting..................................................................6
Repair Parts..........................................................................7
INTRODUCTION
Please take a few minutes to read our instructions before in-
stallingyour Portable Utility Pump.It will help toassure per-
fect installation and help you avoid needless service
expenses.
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 per-
sonal injury!
DANGER warnsabouthazardsthatwill 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 dam-
age if ignored.
CAUTION warns about hazards that will or
can cause minor personal injury or property damage if ig-
nored.
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 in-
stalling pump.
2. Follow local and/or national plumbing and electrical
codes when using pump.
3. To avoid fatal shocks, proceed as fol-
lows if pump needs servicing:
A. Disconnect power to pump outlet box before
pulling pump cord plug! After plug is pulled, let
pump cool for 20 minutes before attempting to work
on it.
B. Take extreme care when changing fuses. To re-
duce the chance of fatal electrical shocks, DO NOT
stand in water or put your finger in the fuse socket.
C. Ground the electrical outlet box.
D.Use only a Ground Fault Circuit Interrupter
(GFCI) protected grounded outlet for cord plug.
4. Never run pump dry. To do so can damage internal
parts, overheat the pump (which can cause burns to peo-
ple handling or servicing the pump), and will void the
warranty!
5. Risk of fire or explosion from sparks
from motor brushes. Do not pump gasoline or any
otherflammableliquidswiththispump.Donot usepump
in an atmosphere that might contain flammable fumes or
vapors.
6. Do not pump chemicals or corrosive liquids with this
pump.
2
FULL ONE YEAR WARRANTY
For one year from the date of purchase, Sears will repair or replace this pump, free of charge, if defective in materials or work-
manship.
This warranty does not cover repairs on replacement parts necessary because of abuse or negligence including failure to install,
adjust and operate this pump according to the instructions in the owner’s manual.
LIMITATION OF LIABILITY
SEARS WILL NOT BE LIABLE FOR LOSS OR DAMAGE TO PROPERTY OR ANY INCIDENTAL OR CONSEQUENTIAL LOSS OR
EXPENSE FROM PROPERTY DAMAGE DUE DIRECTLY OR INDIRECTLY FROM THE USE OF THIS PRODUCT.
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion
may not apply to you.
WARRANTY SERVICE IS AVAILABLE BY SIMPLY CONTACTING THE NEAREST SEARS SERVICE CENTER/DEPARTMENT IN
THE UNITED STATES.
This warranty applies only while the product is in the United States.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
Sears, Roebuck and Co., Dept. 817 WA, Hoffman Estates, IL 60179
RULES FOR SAFE INSTALLATION AND OPERATION
WARNING
Risk of dangerous or fatal electrical
shock if pump motor gets wet.
Keep motor dry at all times.
Do not immerse pump or motor.
Do not try to run pump if motor is wet.

Pump is supplied with
3-conductor ground-
ing type cord. Connect only
to a properly grounded,
GFCI protected outlet. Do
not lift pump by electrical
cord. Unplug pump before
servicing.
Pump is non-sub-
mersible. Keep motor
dry at all times. Do not
wash motor. Do not im-
merse. Protect motor from wet weather.
If using an extension cord, use only a UL ap-
proved indoor/outdoor, 3-wire, grounding type
cord. Keep receptacle cord and ends dry at all times.
When priming, pump should produce water in
less than 10 minutes. If not, stop pump and re-
peat priming process.
If water is trapped in pump during operation, it
may turn to steam, leading to explosion and
burns. Never run pump with outlet shut off or
blocked.
NOTICE
Pump clean water only with this pump. To avoid clogging
pump and damage to shaft seal, do not pump water con-
tainingsolids,foreignmaterial,silt,orabrasives.Alwayshave
suctionstrainerinstalledwhenpumpisoperating. Failure to
use strainer may cause pump failure and void warranty.
Clean strainer and flush out pump after each use.
Make sure all hose and pipe connections in suction line are
tight. An air leak in suction line will prevent priming and re-
duce performance.
To prevent damage to pump materials, do not use pipe joint
compounds on pump ports. Use only teflon tape or Plasto-
Joint-Stik* to seal threads.
Tighten all piping to pump hand tight plus 1-1/2 turns only.
Overtightening may break pump and will void warranty.
*Lake Chemical Co., Chicago, Illinois.
LOCATION OF UNIT
Locatepumpasnearaspossible(vertically) towatersource,
to keep suction lift (distance from water to pump) as low as
possible. Place pump on a level support. Protect against ex-
cess moisture and flooding.
PIPING
Both suction and discharge ports are tapped for 3/4” pipe.
If using hoses, use hose to pipe thread adapter. Use only
pipe or reinforced hose for suction line. Install a strainer or
puddle gulper on end of suction line. Inspect and clean
strainer frequently (see Figure 1). Plastic pipe can be used
for all installations.
PRIMING/OPERATION
NOTICE: Do not run pump dry. Running pump without
water can damage impeller and may damage seal, causing
leaking or flooding, and will void warranty.
All suction connections must be airtight. Make sure suction
lift is not more than 15 feet. Fill pump body through prim-
ing port before starting pump. Start pump; it should pump
water in under 10 minutes (depending on length of suction
hose and height of pump above water).
ELECTRICAL
Risk of dangerous or fatal electric shock.
Unplugpumpbefore servicing it. Do nothan-
dle pump or attempt to work on pump with
wet hands or while standing on wet or damp
floor.
Hazardous
voltage
3
Figure 1: Typical Installation
Discharge line
hose or plastic pipe
Priming Plug
Hose adapter
or plastic pipe
adapter.
Suction line:
reinforced hose
or plastic pipe
Strainer (clean
frequently)
115 volt GFCI protected
grounded outlet box
operate pump
on 115 volt
current only!
WARNING
876 0993
WARNING
Hazardous voltage.
Can shock, burn, or
cause death.
Hazardous pressure.
Can cause explosion
and steam burns.
Read and follow safety
instructions in this
manual.
NOTICE:
•Pump suction port
must be 15' (4.6m) or
less above water levels.
• Max. water temp. is
120°F (49°C).
INSTALLATION

Plug pump into a 115 Volt, 60 Cycle outlet only. Pump is
equipped with a 3-wire, grounded, cord and plug. Do not
modify or remove plug. Plug into a properly grounded,
grounding type outlet only. Make sure that pump circuit
meets National Electrical Code. To avoid dangerous electri-
cal shock hazard, keep cord dry at all times.
NOTICE: Pump motor is equipped with carbon brushes
(Figure 2). Extra set of brushes is included. Replacement
brushes are available (see Page 7). Motor brushes not in-
cluded in warranty.
Fire hazard. Incorrectly mounted brush-
es may cause fire. Be sure curve on end of brush matches
curve on commutator.
LUBRICATION
Motor is lubricated at factory for life of bearings. Pump seal
is water cooled and self lubricating.
PUMP SERVICE
Motor has auto-reset thermal overload. If motor overheats,
overloadwillcutoffpowertopreventdamageandwillreset
after motor cools. If overload trips repeatedly, check pump
for cause (low voltage, clogged impeller, etc.).
Hazardous voltage. Can shock, burn, or
causedeath.Disconnectmotorfromelectricalpowerbefore
servicing pump.
Always replace both brushes – to avoid fire hazard, never
replace just one.
Motor Brush Replacement:
Replace brushes when they wear down to 1/2” length.
1. Unplug pump from power outlet.
2. Unscrew brush caps (See Figure 2) and remove brushes
(Figure 2).
NOTICE: Pull brushes straight out of holders, being care-
ful not to stretch springs. If reusing the same brushes,
mark brush and brush cap for replacement to original po-
sition.
3. Install new brushes and brush caps.
NOTICE: When reinstalling the same brushes that were
removed, replace on same side of motor that they were
onoriginally.Matchcurve on ends of brushestocurveon
commutator.
Pump Disassembly:
1. Unplug pump from power outlet.
2. To prevent breaking brushes when removing rotor, un-
screw brush caps (See Figure 2) and remove brushes; see
“Motor Brush Replacement” at left.
3. Remove 4 nuts holding pump body to motor; pull pump
body away from motor housing. Seal Plate, Slinger and
Shaft Rotor will come with it. Do not lose Spring Washer
(See Figure 3) off end of shaft.
4. Remove Rotor and Seal Plate Assembly (Figure 3) from
Pump Body. Do not lose the square-cut O-Ring.
5. Remove Diffuser (See Figure 4) from Seal Plate.
6. Hold Rotor. Unscrew Impeller (Figure 4) from Shaft.
7. Remove Shaft from Seal Plate.
4
150 0893
Brush
Cap
Brush
Cap
Carbon Brush
w/Spring
Carbon Brush
w/Spring
Figure 2
O-Ring
Rotor and
Seal Plate
Assembly
Spring Washer (Feet
ride on bearing race)
2017 0995
Square-cut
Ring
Figure 3
Impeller
Diffuser
Seal Plate
Rotor
2016 0995
Figure 4
INSTALLATION / SERVICE

Seal Replacement:
1. Use a piece of tubing or copper pipe to press old seal half
out of seal plate (Figure 5A).
2. Use a screwdriver to pry old ceramic ring and rubber seal
ring out of impeller (see Figure 5B).
3. Clean cavity in impeller.
Be sure you do not scratch or nick pol-
ished surfaces of seal, or seal may leak, causing flood-
ing.
4. Apply a thin coat of non-hardening Permatex to outside
of seal ring. BE SURE that no Permatex gets on polished
seal face. Using a cardboard washer to protect polished
carbon seal face, press new seal half into seal plate with
tubing or pipe (see Figure 6).
5. Using a cardboard washer to protect polished ceramic
seat of rotating half of seal, press seal half into impeller
(see Figure 7).
Pump Reassembly:
1. Sliderubberslingerontomotorshaft;mount seal plate on
end of shaft. Push seal plate onto shaft until ball bearing
race is seated in tolerance ring in seal plate cavity. Take
care not to damage seal as it passes over end of shaft.
2. Screw impeller onto shaft end; do not damage seal face.
3. Reinstall diffuser on seal plate; secure with two screws.
4. Slip spring washer onto a long, thin screwdriver blade;
use screwdriver to guide washer into position at rear of
motor housing.
NOTICE: Install spring washer with toes pointing up (to-
wardend ofshaft).Besurethatscrewdriver doesnotnick
insulation on motor windings.
5. With drain hole in seal plate down, slide motor shaft as-
semblyinto placeinmotor.Toesonspring washershould
ride on shaft end. Seat seal plate in motor housing flange.
6. Install square-cut O-Ring on diffuser; slide pump body
over diffuser and seal plate until it seats against motor
housing flange. Install 4 nuts on studs and tighten.
7. Reinstallmotor brushes(see“MotorBrushReplacement”,
Page 4).
5
Use tube to
press in seal.
Press on
flanges only.
Polished carbon
seal face.
Do not
scratch.
Coat outside
of seal with
gasket sealant
before installing.
2027 0995
Figure 6
Press in seat ring with tube.
Use a carboard washer to
protect polished seat.
Impeller
Cardboard
2028 0995
Figure 7
Press out old
seal with tube
Weep hole must be
at bottom of seal plate
when pump is
reassembled
Pry out ceramic
seal ring and
rubber seat
2026 0995
Figure 5A Figure 5B
SERVICE

6
TROUBLESHOOTING CHART
TROUBLE AND CAUSE REMEDIES
FAILURE TO PUMP
Pump not properly primed. Make sure tank body is full of water.
See priming instructions.
Speed too low. Check voltage at motor terminals and at meter when
pump is operating. If low, refer to wiring instructions,
or check with your Power Company.
Check for loose connections.
Total head too high. A pump designed for high head service is needed.
Suction lift too great. Locate pump closer to source of water. Make sure
suction line is large enough.
Air leak in suction line. Check and repair suction line.
Water level drops while pumping, Check water supply. Add more suction line to keep
uncovering suction inlet. it submerged and under water.
REDUCED CAPACITY AND/OR
HEAD (PRESSURE)
Air pockets or leaks in suction line. Check and repair suction line.
Clogged impeller. Remove and clean.
Foot valve strainer too small, or clogged. Use large foot valve, or clean.
Insufficient submergence of suction pipe. Add more suction line to keep it submerged and
well below the water surface.
Excessive dynamic suction lift (over 20 ft.). Move pump closer to water level.
Total pressure needed more than that for which A larger pump is needed.
pump was intended.
Excessively worn impeller. Order replacement parts, using repair parts list
(Page 7).
Max. Discharge Pressure (PSI) At Shut Off
Suction Lift Pressure
0’ 44 PSI
5’ 42 PSI
10’ 40 PSI
15’ 38 PSI
Performance Chart
Suction Discharge Pressure (PSI)
Lift 5 10 15 20 25 30 35 40
0’ 21.2 20.3 18.6 16.2 13.0 9.7 6.6 3.1
5’ 19.5 18.5 17.0 15.0 12.2 9.2 6.3 2.8
10’ 17.5 16.6 15.5 13.8 11.3 8.6 5.9 2.6
15’ 15.6 14.8 13.9 12.6 10.3 7.8 5.3 –
NOTE: Performance does not take into account pressure losses in
suction and discharge piping.
Gal.
per
Min.
}

7
880 0993
1
22A
3
4
4
To order parts, call:
Sears Product Service 1-800-366-7278
Utility Pump
Model 390.260251
Key No. Description Part Number
1 Pipe to Hose Adapter (2 Included) U78-938P
2 Pump Body C176-60P
2A Priming Plug (Includes O-Ring) U178-940P
3 Overhaul Kit – (Includes: Diffuser, Impeller, Pkg 192
Shaft Seal, Slinger, Square-cut O-Ring)
4 Brush Kit* – (Includes 1 pair Brushes, Pkg 193
1 pair brush holder caps)
• Strainer RP0001663
• Owner’s Manual F642-9302
• Not illustrated
* One brush kit is included with each pump.

Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.
For the repair or replacement parts you need
Call 7 am - 7 pm, 7 days a week
1-800-366-PART
(1-800-366-7278)
For in-home major brand repair service
Call 24 hours a day, 7 days a week
1-800-4-REPAIR
(1-800-473-7247)
For the location of a
Sears Repair Service Center in your area
Call 24 hours a day, 7 days a week
1-800-488-1222
For information on purchasing a Sears
Maintenance Agreement or to inquire
about an existing Agreement
call 9 am - 5 pm, Monday-Saturday
1-800-827-6655
MAINTENANCE
AGREEMENT
America's Repair Specialists
REPAIR SERVICES
America's Repair Specialists
REPAIR SERVICES
America's Repair Specialists
REPAIR SERVICES
OWNER’S
MANUAL
Model No.
390.260251
The model number of
your Portable Utility Pump
will be located on a
sticker attached to the top
of the pump body.
When requesting service
or ordering parts, always
give the following
information:
• Product Type
• Model Number
• Part Number
• Part Description
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.
PORTABLE
UTILITY PUMP