Sears 390.252158 User Manual
SEARS
OWNER'S
MANUAL
MODEL NO.
390.252158
CRAFTSMAN°
PROFESSIONAL
CAUTION:
Read and Follow
All Safety Rulesand
Operating Instructions
Before FirstUse of
ThisProduct.
Save ThisManual For
FutureReference.
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.
PRINTED IN U.S.A. Form No. F642-9823 (9/2S/98)
112 HP SHALLOW WELL
WATER SYSTEM
• Safety Instructions
• Installation
• Electrical
• Maintenance
• Repair Parts
CONTENTS
INTRODUCTION/WARRANTY .......................................... 2
PUMP PERFORMANCE ....................................................... 3
MAJOR COMPONENTS ...................................................... 3
INSTALLATION ................................................................ 4-5
ELECTRICAL ..................................................................... 5_6
OPERATION ........................................................................ 7
MAINTENANCE ............................................................... 7-9
HELPFUL HINTS ............................................................... 10
TROUBLESHOOTING GUIDE ........................................... 11
REPAIR PARTS ............................................................. 12-14
INTRODUCTION
Please read our instructions before installing and using your
shallow Well Water System. This will help you obtain the
full benefits of the quality and convenience built into this
equipment. It will also help you avoid any needless service
expense resulting from causes beyond our control which are
not _:overed by our warranty.
For one year from the date Of purchase, Sears will repair or replace well pump, free of charge, ff deft:cOve in material or workmanship.
LIMITED WARRANTY ON CRAFTSMAN* PROFESSIONAL HYDRO-GLASS ° WELL PUMP
FULL ONE YEAR WARRANTY ON CRAFTSMAN* WELL PUMP
After one year and through three years from the date of purchase, Sears will fumL_, free of charge, a replacement part for any d_fective part. You pay labor.
FULL FIVE YEAR WARRANTY ON CRAFTSMAN _ CAPTIVE AIR TANK
For rive years from date of purch___e, Sears will repair-or replace the tank, free of chaPge, if defective in material or workmanship.
This x,_arTanty does not cover repairs or replacement parts necessary becaus¢_ of abuse or negligence, inclttding faiinre to install, adjust and operate this pump
according to the instructions in the owners 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
D_LIIAGE 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 LS"A VAILABLE BY SIMPLY CONTACTING THE NEAREST SEARS SERVICE CENTER/DEPARTMENT IN THE UNITED STA TEX
his wan'anty applies only while this product is in the Unite,J States.
This warranty gives you specific legal rights, and you may also have other rights which ,ra_ from state to state.
Sears, Roebuck and Co., Dept. 817WA, Hoffman Estates, IL 60179
READ AND FOLLOW SAFETY INSTRUCTIONS!
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!
warns about hazards that wiil cause serious
personal injury, death or major property damage if ignored.
[_WARNING ]w ares abou t hazard stha t will or ca n cause se-
rious personal injury, death or major property damage if ig-
nored.
&
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.
] . ¢
CAUTION
]Never rtm-pump dry. Running pi_np without
water may cause pump to overheat, damaging seal and pos-
sibly causing burns to persons handling pump. Fill pump
with water before starting.
[AWARNING]Never run pump against closed discharge.
To do so can boll water inside pump, causing hazardous
pressure in unit, risk of explosion and possibly scalding
persons handling pump.
F[_,CAUTION]7Motor normally operates at high temperature
and will be too hot to touch. It is protected from heat dam-
age during operation by an automatic internal cutoffswitch.
Before handling pump or motor, stop motor and allow to
cool for 20 minutes.
1. To avoid risk of serious bodily injury and property dam-
age, read safety instructions carefnily before installing
pump.
2. Follow local and/or national plumbing and electrical
codes when installing pump,
3. Keep well covered while installing pump to prevent
leaves and other debris from falling into well, con-
taminating well and possibly damaging pump.
4. Protect pump and piping system from freezing. Allowing
pump or water system to freeze could severely damage
pump and voids warranty.
LAWARNINGJTo avoid serious injury'and equip-
ment damage, limit system pressure to 100 pounds
per square inch (PSI) or below at all times. Over-
pressure can cause tank blowup; install relief valve
capable of passing full pump volume at 100 PSI.
5. With a new well, test well for purity before use. Consult
local Health Department for procedure.
[AWARNING] Haz._u'dous voltage, Can shock, burn,
cause death, or start fires.
SAFETY INSTRUCTIONS (Continued)
6. Disconnect electrical power source before installing or
working on pump.
7. Ground pump with a ground wire run from grounding
lug on motor to a grounded lead in the service panel.
TABLE I - Pump Performance (In Gallons per Minute)
NOTE: This system is designed for pumping depths of 20 feet or less.
8. Line voltage and frequency of electrical power supply
must agree with motor nameplate.
9. Use of fuses or wire smaller than size recommended in
owner's manual can cause overheating, possible fires,
and will void warranty.
Pump
Model
Description Suct. Disch.
Pressure PSI 5' 10' 15' 20'
390.252158 112HP S.W. Jet 1-1/4" 1" 40
BASIC TOOLS AND MATERIALS NEEDED
Plastic Pipe Installation
Tools
Pipe Wrenches
Screwdriver
Knife or Saw to Cut Plastic Pipe
Tire Pressure Gauge
Materials
Plastic Pipe and Fittings (as required to complete job).
Teflon Tape (DO NOT use joint compound on plastic fittings).
Galvanized Steel Pipe Installation
Tools
Pipe Wrenches
Screwdriver
Pipe Cutting and Threading Tools
Tire Pressure Gauge
Materials
Galvanized Pipe and Fittings (as required to complete job).
Pipe Joint Compound or Teflon Tape
Discharge Pumping Depth in Feet
8.2 7.3 6.2 5.0
MAJOR COMPONENTS AND WHAT THEY DO
Impeller and Jet
Impeller turns with motor shaft, causing water to fly out
from its rim by centrifugal force. Impeller rotation creates a
vacuum which pulls in more water. Part of the water is di-
verted back to the jet where it passes through the nozzle and
venturi. This creates more vacuum to draw in more water.
In shallow wells (less than 20 feet deep), the vacuum cre-
ated at the pump is_enough to pull water to toe pump.
Therefore, for shallow _-ell use the jet is built into the pump.
Pre-Charged Tank
The tank serves two functions, it provides a reservoir of
water under pressure and maintains a cushion of air pres-
sure to prevent pipe hammering and possible damage to
plumbing components. When water is drawn off through
the house fixtures, the pressure in the tank is lowered and
the pump starts.
Pressure Switch
The pressure switch provides for automatic operation.
Pump starts when pressnre drops to 40 pounds and stops
when pressure reaches 60 pounds.
Check Valve or Foot Valve
This pump is equipped with a built-in check valve. Install a
check valve as close to well as possible o_ well point in-
stallations. A foot valve must be installed in the well on dug
or cased wells. See Figures ZA and 2B, Page 4. For long hor-
izontal pipe runs, install check valve as close to well as pos-
sible (all types of wells).
3
INSTALLATION
INSTALLATION
Piping in the Well
The Shallow Well Water System can be installed on a dug
well, drilled well or with a driven point. In a dug or cased
well, a foot valve and strainer should be installed for easy
priming. It should be installed five to ten feet below the low-
est level to which the water will drop while the pump is op-
erating (pumping water level). To keep sediment from
clogging the strainer, be sure it is five to ten feet above the
bottom of the well. Before installing the foot valve, make
sure that it works freely.
When using a foot valve, a priming tee and plug as shown in
Figure l, are recommended.
PrimingPlug,
PrimingTee
(UserSupplied)
\
From
Well
For a pump at sea level mounted directly over the well, be
sure the total lift from the pumping water level to the pump
does not exceed 20 feet. This will be less ff the pump is off-
set from the well.
The maximum lift of any pump decreases at the rate of about
1" less lift for every 1,000 feet of elevation above sea level.
For example, at Denver, Colorado (Elev. 5,000') the pump
loses five feet of lift. The maximum depth from which it
would pump water would therefore be 15 feet.
Well Seal
Plastic Pilse
Pipe "
and Strainer
Figure I
When installed on a driven point well, your Shallow Well
Water System should have a check valve installed as shown
in Figure 2A.
[_eck Valve
I Steel Drive Pipe
5111293
Dug or Cased Well
Figure 2B
PUMP/TANK INSTALLATION
Pump
NOTICE: Use Teflon tape supplied with the pump or Plasto-
Joint Stik' for making all pipe-thread connections to the
pump itself. To avoid stress-cracking, do not use pipe joint
compot_nds on the pump.
1. Wrap male pipe threads being attached to pump with
one or two layers of Teflon tape. Cover entire threaded
portion of pipe.
2. Do not overtighten threaded fittings in the plastic pump.
Be sure you do not try to tighten joint past thread stop
in pump port!
3. If leaks occur, remove fittings, clean offold tape, rewrap
with two to three layers of tape and remake the con-
nection. If joint still leaks, replace the fittings (fittings
may be undersized).
4. Be sure to support all piping corlnected to.,,th.€ System.
_Lake Chemical Co., Chicago, Illinois
Figure 2A
Drive coupling
Well point
Liven poi!It
Horizontal Piping from Well to Pump
When the pump is offset more than 25 feet from the well,
horizontal suction pipe size should be increased to reduce
friction losses. Never install a suction pipe that is smaller
than the suction tapping of the pump.
INSTALLATION
1-1/4" 1-1/2" 2"
Up to 25 Ft. 25 to 50 Ft. 50 to 200 Ft.
Discharge Pipe Sizes
When the pump is some distance from the house or point
of water use, the discharge pipe size should be increased to
reduce pressure losses caused by friction.
1" 1-114" 1-1/2"
Up to 25 Ft. 25 to 100 Ft. 100 to 800 Ft.
Tank
Tanks are pre-charged with 40 PSI air pressure at the factory.
Your tank requires an air ch.arge of 40 pounds per square
inch (PSI) for proper operation; check tank pressure with
tire gauge to determine flair charge needs adjustment. Tank
pre-charge should be checked annually; see instructions at
right.
In areas where the temperature is high for long periods of
time, the tank pre-charge pressure may increase. This may
reduce the tank drawdown (amount of water available per
cycle). If this occurs, reduce the pre-charge pressure to two
PSI below the pump cut-in setting of the pressure switch
(normally to 38 PSI).
It is necessary to flush all air out of the piping system and
water reservoir portion of the pre-charged tank. This is re-
quired on new installations, pumps requiring repriming and
pumps that have been disassembled for service. Do this as
fonows:
1. Open faucets furthest from tank and allow pump to op-
erate.
2. Air in the system will cause a sputtering flow; allow
faucets to run until you have a steady, air free stream.
3. Open and close faucets repeatedly until you are sure all
air has been removed.
4. If stream does not become steady, air may be leaking into
the system; check for leaks in the piping on the suction
side of the pump.
NOTICE: To prevent waterlogging, check tank air charge
annually.
To Check Tank Air Charge
If drawdown (amount of water available per cycle), de-
creases significantly, check as follows:
1. To check air charge in tank, shut off electric power to
pump, open faucet near tank, and drain completely.
2. At the air valve in top of tank, check air pressure with
standard tire gauge. Air pressure should be the same as
pump pressure switch cut-in setting (40 PSI).
3. If the air pressure is below 40 PSI, add air to the tank.
Use an air compressor or a portable air storage tank.
4. Use soap or liquid detergent to check for air leaks around
air valve. Continuous bubbling indicates a leak. If neces-
sary, install new core in air valve. This is the same as
those used for automobile tubeless tires.
1 2
1. Tank nearly empty - air expands filling area above
vinyl separator.
2. Water begins to enter tank - air is compressed above
separator as it fills with water.
3. Pump-up cycle completed - air now compressed to
Figure 3
ELECTRICAL
Table II Wiring Chart - Recommended Wire and Fuse Sizes
Motor
Horsepower
1/2
Volts
115/230
Max. Load
Amps.
8.8/4.4
Rating Amps
Branch
Fuse*
1_15
3 4 5
cut off setting of pressure switch.
4. Water being drawn from tank - compressed tank air
forces water out of separator.
5. Separator completely empty - new cycle ready to
begin.
Distance in FeetfromMotorto Meter
0'to 101'to 201'to 301'to 401'to
100' 200' 300' 400' 500'
Wire Size
14/14 12/14 10/14 8/14 8/12
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