Craftsman 390.252156 User Manual
F642-9708
SEARS
OWNER'S
MANUAL
MODEL NO.
390.252156
CAUTION:
Read and Follow
All Safety Rules and
Operating Instructions
Before First Use of
This Product.
Save This Manual For
Future Reference.
Photo may vary from actual product.
CRAFTSMAN
1/2 HP SHALLOW WELL
WATER SYSTEM
• Safety Instructions
• Installation
• Electrical
° Maintenance
° Repair Parts
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.
PRINTED IN U.S.A. Form No. F642-9708 (Rev. 8/4/97)
CONTENTS
INTRODUCTION/WARRANTY .................................. 2
PUMP PERFORMANCE ............................................... 3
MAJOR COMPONENTS .............................................. 4
INSTALLATION ........................................................ 4-5
ELECTRICAL ............................................................... 6
OPERATION ............................................................... 6
MAINTENANCE ..................................................... 7-10
Please read our instructions before installing and using
your Shallow Well Water System. This will help you ob-
tain 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 be-
yond our control which are not covered by our war-
ranty.
INTRODUCTION
HELPFUL HINTS ....................................................... 10
TROUBLESHOOTING GUIDE .................................. 11
REPAIR PARTS ..........................................................
FULL ONE YEAR WARRANTY ON PUMP
For one year from the date of purchase. Sears will repair or replace well pump, free of charge, if defective in material or workmanship.
LIMITED WARRANTY ON CRAFTSMAN HYDRO-GLASS _PUMP
After one year and through three years from the date of purchase. Sears will furnish, free of charge, a replacement part for any defective part. You pay
for labor.
This warranty does not cover repairs or replacement parts necessary because of abuse or negligence including failure to install, adjust and operate this
well pump according to the instructions in the owners manual.
For five years from the date of purchase, Sears will replace the tank free of charge, if defective in materials or workmanship. This warranty does not cover
repairs or replacement parts necessary because of abuse or negligence, including failure to install, adjust and operate this tank according to the instruc-
tions in the owners manual
SEARS WILL NOT BE LIABLE FOR LOSS OR DAMAGE TO PROPERTY OR ANY INCIDENTAL OR CONSEQUENTIAL LOSS OR EXPENSE FROM
PROPERTY DAMAGE DUE DtRECTL Y 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 of AMERICA. For service outside the U.S.A. contact your local Sears Service Center or store.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
FULL FIVE YEAR WARRANTY ON CAPTIVE AIR ®TANK
Sears, Roebuck and Co., Dept. 817 WA, Hoffrnan 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 will cause seri-
ous personal injury, death or major property damage if
ignored.
I' WARN NGIwarnsabout hazards that will or can
cause serious personal injury, death or major property
damage if ignored.
[_cAuTIoNIwarns 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.
[AC_CAUTIONINever run pump dry. Running pump with-
out water may cause pump to overheat, damaging seal
and possibly causing burns to persons handling pump.
Fill pump with water before starting.
I_WARNINGINever run pump against closed dis-
charge. To do so can boil water inside pump, caus-
ing hazardous pressure in unit, risk of explosion
and possibly scalding persons handling pump.
[4 CAUTIONIMotor normally operates at high temper-
ature and will be too hot to touch. It is protected from
heat damage during operation by an automatic internal
cutoff switch. Before handling pump or motor, stop
motor and allow to cool for 20 minutes.
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 electri-
cal 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.
I' wARN NGIToavoid 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.
I&wAnaIaGIHazardous voltage. Can shock,
burn, cause death, or start fires.
SAFETY INSTRUCTIONS (Continued)
6. Disconnect electrical power source before in-
stalling or working on pump.
7. Ground pump with a ground wire run from ground-
ing lug on motor to a grounded lead in the service
panel.
Priming Plug,
Priming Tee
(User Supplied)
Figure 1
8. Line voltage and frequency of electrical power sup-
ply 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.
To Service
From
Well
[_) _heck Valve
Plastic Pipe
÷S!eel Drive Pipe
[_] Drive coupling
[_ Wellpoint
_. Driven point
Well Seal
Foot Valve
and Strainer
dl 1293
Dugor Cased Well
Figure 2A
Figure 2B
TABLE I
Pump Performance (In Gallons per Minute)
NOTE: This system is designed for pumping depths of 20 feet or less.
Pipe
Pump
Model
Description Suct. Disch.
Discharge
Pressure PSI
390.252156 1/2 HP S.W. Jet 1-1/4" 1" 40
Pumping Depth in Feet
5' 10' 15' 20'
8.2 7.3 6.2 5.0
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
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 diverted back to the jet where it passes
through the nozzle and venturi. This creates more vac-
uum to draw in more water.
In shallow wells (less than 20 feet deep), the vacuum
created at the pump is enough to pull water to the
pump. Therefore, for shallow well 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
pressure to prevent pipe hammering and possible dam-
age 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 pressure drops to 30 pounds and
stops when pressure reaches 50 pounds.
INSTALLATION
Piping in the Well
The Sears 1/2 HP Shallow Well Water System can be in-
stalled 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 in-
stalled five to ten feet below the lowest level to which
the water will drop while the pump is operating
(pumping water level). To keep sediment from clog-
ging 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 1A, Page 3, are recommended.
When installed on a driven point well, your Shallow
Well Water System should have a check valve installed
as shown in Figure 2A, Page 3.
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 if
the pump is offset 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 there-
fore be 15 feet.
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 on
well point installations. A foot valve must be installed
in the well on dug or cased wells. See Figures 2A and
2B. For long horizontal pipe runs, install check valve as
close to well as possible (all types of wells).
PUMP/TAN K INSTALLATIO N
Pump
NOTICE: Use Teflon tape supplied with the pump or
Plasto-Joint Stik I for making all pipe-thread connections
to the pump itself. To avoid stress-cracking, do not use
pipe joint compounds on the pump.
_Lake Chemical Co., Chicago, Illinois
INSTALLATION
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 off old tape,
rewrap with two to three layers of tape and remake
the connection. If joint still leaks, replace the fit-
tings (fittings may be undersized).
4. Be sure to support all piping connected to the
System.
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.
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" 1-1/4" 1-1/2"
Up to 25 Ft. 25 to 100 Ft. 100 to 600 Ft.
Tank
Tanks are pre-charged with 30 PSI air pressure at the
factory. Your tank requires an air charge of 30 pounds
per square inch (PSI) for proper operation; check tank
pressure with tire gauge to determine if air charge
needs adjustment. Tank pre-charge should be checked
annually; see instructions at right.
In areas where the temperature is high for long peri-
ods 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 set-
ting of the pressure switch (normally to 28 PSI).
It is necessary to flush all air out of the piping system
and water reservoir portion of the pre-charged tank.
This is required on new installations, pumps requiring
repriming and pumps that have been disassembled for
service. Do this as follows:
1. Open faucets furthest from tank and allow pump to
operate.
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 leak-
ing 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 com-
pletely.
2. At the air valve in top of tank, check air pressure
with standard tire gauge. Air pressure should be
same as pump pressure switch cut-in setting (30
PSI).
3. If the air pressure is below the cut-in setting, 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 necessary, install new core in air valve. This
is the same as those used for automobile tubeless
tires.
LJ k_J
1 2
.
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
Figure 3
k_J k_J k_J
3 4 5
to 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.
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