Craftsman 390.2509 User manual

SEARS
OWNER'S
MANUAL
MODEL NO.
390.2509
CAUTION:
Read and Follow
All Safety Rulesand
Operating Instructions
Before FirstUse of
ThisProduct.
Save ThisManual For
FutureReference.
I:RRFTSMRN°
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.
PRtNTED IN U.S.A, Form No. F642-04074 (8/3/04)

CONTENTS
INTRODUCTION/WARRANTY ..................................................... 2
MAJOR COMPONENTS ................................................................. 3
INSTALLATION .......................................................................... 3-4
PUMP PERFORMANCE .................................................................. 4
ELECTRICAL ............................................................................... 5_5
OPERATION .................................................................................. 7
M.MNTENANCE ........................................................................ 7-10
HELPFUL HINTS .......................................................................... 11
REPAIR PARTS ........................................................................ 12-14
TROUBLESHOOTING GUIDE ..................................................... 15
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 be-
yond our control which are not covered by our warranty.
READ AND FOLLOW SAFETY INSTRUCTIONS!
Carefully read and follow all safety instructions in this man- 1. To avoid risk of serious bodily injury and property damage,
ual or on pump. read safety instructions carefldiy before installing pump.
_This is the safety alert symboL When you see this symbol
on your pump or in this manual, look for one of the follow-
ing signal words and be alert to the potential for personal injury!
_ warns about ILazards that will cause serious per-
sonal injury, death or major property damage if ignored.
rI
[ ..XWARNING ]warns about hazards that will or can cause serious
personal injury, death or major property damage if ignored.
P
[A CAUTION Iwarns about hazards that will or can cause minor
personal injury or property damage if ignored.
The word NOTICE indicates special instructions which are im-
portant but not related to hazards.
r
[_ CAUTION [Never rtm pump dry. Running pump without water
i
may cause pump to overheat, damaging seal and possibly causing
burns to persons handling pump. Fill pump with water before
starting.
P
L_kWARNING_ Never run pump against closed discharge. TO do
so can boil water inside pump, causing hazardous pressure in
unit, risk of explosion and possibly scalding persons handling
pump.
F
lax CAUTIONJ Motor normaUy operates at high temperature 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.
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, contaminating well and pos-
sibly 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 equipment
damage, limit system pressure to 75 pounds per sqlmre
inch (PSI) or below at all times. Over-pressure can cause
explosion; install relief valve capable of passing full
pump volume at 75 PSI.
5. With a new well, test well for purity before use. Consult local
Health Department for procedure.
F _
LAWARNINGJHazardous voltage. Can shock, burn,
cause death, or start fires.
6. Disconnect electrical power source before installing or work-
ing on pump.
7. Ground pump with a ground wire run from grounding lug on
motor to a grounded lead in the service panel.
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.
2

BASIC TOOLS
AND MATERIALS NEEDED
Plastic Pipe Installation
Tools
Pipe Wrenches Knife or Saw to Cut Plastic Pipe
Screwdriver Tire Pressure Gauge
Materials
Plastic Pipe and Firings (as required to complete job).
Teflon Tape (DO NOT use joint compound on plastic fittings).
When using a foot valve, a priming tee and plug as shown in Figure 1,
are recommended.
Galvanized Steel Pipe Installation
Tools
Pipe Wrenches Pipe Cutting and Threading Tools
Screwdriver 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
vacuum to draw in more water.
In shallow webs (less than 20 feet deep), the vacuum created at the
pump is enough to pull water to the pump. Therefore, for shallow
web 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 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 pressure drops to 30 pounds and stops when pressure
reaches 50 pounds.
Check Valve or Foot Valve
This pump is equipped with a built:m check valve. Install a check
valve as close to well as possible on web 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 web as possible (all types of wells).
INSTALLATION
Piping in the Well
The Shallow Well Water System can be installed on a dug well,
cased 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 lowest level to which the water
will drop while the pump is operating (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.
Figure I - Connections to water system
When installed on a driven point well, your Shallow Well Water
System should have a check valve installed as shown in Figure 2A.
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 ex-
ceed 20 feet. This will be less if the pump is offset from the weB.
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 ex-
ample, 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.
C_heck Valve
_Steel Drive Pipe
_Drive coupling
_Well point
_Ddven point
Figure 2A - Driven point
Well Seal
Plastic PilSe
Foot Valve
and Strainer
Figure 2B - Dug or cased well
3

INSTALLATION
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 compounds 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 off old tape, rewrap with
two to three layers of tape and remake the connection, ff joint
still leaks, replace the fittings (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, hori-
zontal 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.
1-114" 1-1/2" 2"
Up to 25 Ft. 25 to 50 Ft. 50 to200 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 600 Ft.
'Lake Chemical Co., Chicago, IlIinois
Tank
Tank is pre-charged with 40 pounds per square inch (PSI) air pres-
sure at the factory. Your tank requires an air charge of 30 PSI for
proper operation; check tank pressure with tire gauge to deter-
mine if air charge needs adjustment. Tank pre-charge should be
checked annual!y; 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, re-
duce the pre-charge pressure to match the pump cut-in setting of
the pressure switch (normally 30 PSI).
It is necessary to flush aL! 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 leaking into the sys-
tem; check for leaks in the pipio_ 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) decreases sig-
nificantly, 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 the turn on pres-
sure of the pressure switch (30 PSI).
3. If the air pressure is below 30 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 b_ _ a lealc If necessary, install new core in
air valve. This is tiae same as those used for amons3b_le tabeless tires.
1.
1 2
Tank nearly empty - air expands filling area above vinyl sep-
arator.
2. Water begins m enter tank - air is compressed above sepa-
rator as it fills with water.
x-d L_d X_d "_d
3 4 5
4. Water being drawn from tank - compressed tank air forces
water out of separator.
5. Separator completely empty - new cycle ready to begin.
3. Pump-up cycle completed - air now compressed to cut off
setting of pressure switch.
Figure 3
Pump
Model
390.2509
TABLE I - PUMP PERFORMANCE (In Gallons per Minute)
NOTE: This system isdesignedfor pumpingdepthsof 20 feet or less.
Discharge Pumping Depth in Feet
Description Suct. Disch, Pressure PSI 5' 10' 15' 20'
112HP S.W. Jet 1-1/4" 3/4" 40 7.3 6.2 5.2 4.2
4

ELECTRICAL
Disconnect power before working on pump, motor, pressure switch, or wiring.
Motor Switch Settings
lfthe motor can operate at either 115 or 230 volts, it is set at the
factory to 230 volts. Do not change motor voltage setting if line
voltage is 230 volts, or if you have a single voltage motor.
NOTICE: Never wire a 115 volt motor to a 230 volt line.
Remove Motor End Cover
Figure 4 - Removing Motor End Cover
Dial Type Voltage Selector
rConnections
Ground Wire Connection
Figure 5 - Voltage Set To 230 Volts, Dial Type
You will need to remove the motor end cover to change the volt-
age setting. The illustration above also shows the pressure
switch. If the power supply connection still needs to be made,
the pressure switch cover v_di need to be removed.
Your motor terminal board (located under the motor end cover)
should look like the one at right.
To change to I 15 volts:
1. Make sure power is off.
2. Turn the dial counter-clockwise until 115 shows in the dial
window.
3. Reinstall the Motor end cover
4. Go to Wiring Connections, Page 6.
[_,WARNING] Hazardous voltage. Can shock, burn, or kill
Connect ground wire before connecting power supply
wires. Use the wire size (including the ground wire) speci-
fied in the wiring chart. If possible, connect the pump to a sep
arate branch circuit with no other appliances on it.
_ Explosion hazard. Do not ground to a gas sup-
ply line.

ELECTRICAL
WIRING CONNECTIONS
I_,WARNING_J Fire hazard. Incorrect voltage can cause a fire or
seriously damage the motor and voids the warranty. The supply
voltage must be within ± 10% of the motor nameplate voltage.
NOTICE: Dual-voltage motors are factory wired for 230 volts. If
necessary, reconnect the motor for 115 volts, as shown. Do not
alter the wiring in single voltage motors.
Install, ground, wire, and maintain your pump in compliance with
the National Electrical Code (NEC) or the Canadian Electrical Code
(CEC), as applicable, and with all local codes and ordinances that
apply. Consult your local building inspector for code information.
Motor wires connecthere.
-Power supply wires connecthere.
230 Volt: Connect 2 hot wires(blackand re(
here and capthe white (neutral)wire. It does
notmatter whichwire goestowhichscrew.
115 Volt: Connect one hot wire (black or red)
toone of these screws (itdoesnl matter
whichone). Connect the white(neutral)wire
to the other screw. Cap any remaining
• blackor red wires.
power cable to prevent strain
on the terminal screws.
areen (or bare copper) ground wire
to the green ground screw. 31870398
Figure 6 - Pressure switch wiring
Connection Procedure:
1. Connect the ground wire first as shown in Figure 6. The ground
wire must be a solid copper wire at least as large as the power
supply wires.
2. There must be a solid metal connection between the pressure
switch and the motor for motor grounding protection. If the
pressure switch is not connected to' the motor, connect the
green ground screw in the switch to the green ground screw
under the motor end cover. Use a solid copper wire at least as
large as the power supply wires.
3. Connect the ground wire to a grounded lead in a service panel,
to a metal undergromad water pipe, to a metal well casing at
least ten feet (3M) long, or to a ground electrode provided by
the power company or the hydro authority.
4. Connect the power supply wires to the pressure switch as
shown in Figure 6.
5. Reinstall the pressure switch cover.
Motor
Horsepower
1/2
TABLE II WIRING CHART - Recommended Wire and Fuse Sizes
Volts
115/230
Max,
Load
Amps.
10.4/5.2
Branch
Fuse*
Rating
Amps
15/15
Distance in Feet fromMotorto Meter
0' 101' 201' 301' 401'
to to to to to
100' 200' 300' 400' 500'
Wire Size
14/14 10/14 8/14 6/14 6/12
6

OPERATION
Priming the Pump
NOTICE: To prevent damage to intemal parts, do not start motor
until pump has been filled with water.
To prime pump:
1. Remove priming plug (Figure 1, Page 4).
2. Fill pump with water.
3. Replace priming plug, using Teflon tape or Plasto-Joint Stik zon
plug threads; tighten plug.
4. Start the pump. Water should be pumped in 1-2 minutes. If not,
repeat steps 1, 2 and 3.
On shallow depths to water (10 feet or less), the pump will
probably prime the first time after following steps 1 through 4
above.
From 10 to 20 foot depths, you might have to shut offthe pump
and repeat steps 1, 2 and 3 several times.
5. If, after priming pump several times, no water is pumped,
check the following:
A. Be sure suction pipe is in the water.
B. Be sure suction pipe does not leak.
C. Be sure that pump is not trying to lift water too high (see
"Piping in the Well", Page 4).
D. As long as foot valve and check valve function correctly and
suction pipe does not develop leaks, pump should not need
repriming in normal service.
2Lake Chemical Co., Chicago, Illinois
MAINTENANCE
Lubrication
It is not necessary to lubricate the pump or its motor. The motor
bearings are lubricated for life. The mechanical shaft seal in the
pump is water lubricated and self-adjusting.
Draining for Winter
L_'WARNING] Risk of electric shock. Disconnect power be-
fore working on unit.
Pump should be drained whenever it is disconnected from service
or is in danger of freezing.
1. DISCONNECT POWER.
2. Open faucet and relieve all pressure on system before pro-
ceeding.
3. Disconnect pressure switch tube (Key No. 15, Page 12) at
barbed elbow on pressure switch (Key No. 26) and allow tube
to drain.
4. Unscrew barbed elbow (Key No. 14) from pump body and
allow pump to drain. If necessary to drain completely, tilt
pump.
5. Remove priming plug to vent pump; disconnect hose (Key No.
6, Page 14) at tank end and drain pressure tank and aL! piping
to a point below the frost line.
6. Be sure to drain any piping that may be cut off from normal sys-
tem drain due to check valve installation.
Vinyl Bag Replacement
LAWARNINGJ Be sure ALL air pressure has been released
from tank before removing nuts from flange. Failure to do
this may result in serious or fatal injury. Do not attempt to
open tank unless all pressure has been relieved_
I_AWARNING ]Risk of electric shock. Disconnect power be-
fore working on unit.
1. DISCONNECT POWER TO PUMP.
2. Drain system as follows:
A. Open faucet closest to tank.
B. Remove hose (Key No. 6, Page 14) from tank elbow.
3. Relieve (expel) ALL air pressure in system by removing valve
core.
4. Disconnect outside piping from tank and pump.
p
L,_WARNING_ To avoid serious or fatal injury, be sure all
air pressure has been released from tank before pro*
ceeding to step 5.
5. Remove nuts from inlet flange (Key No. 2, Page 14). Tap inlet
flange to break seal. Remove flange.
6. Wherever convenient, hold bag with pliers and cut with sin-
gle-edge razor blade or sharp knife. Bag will not come out in
one piece. Continue pulling and cutting until bag is removed.
7. Clean and dry inside of tank.
8. Place replacement bag on a clean surface with opening up.
Flatten bag and force air out.
9. Tightly roll bag towards center opening.,
10. Before center opening is covered up, force air out of remain-
ing portion of bag. Finish rolling bag.
11. To make bag easier to insert into tank, sprinkle outside of bag
with talcum powder.
12. Being careful not to break valve, stand tank on end. PUsh tightly
roiled bag into tank.
13. Reach into bag and push out sidewalls. You need not remove
all wrinkles.
14. Clean center opening ring on bag and lip on tank.
15. Pull ring on bag through tank opening and fit over tank lip. BE
SURE it seats properly in groove on tank lip.
16. Clean sealing surface of inlet flange and place on studs.
17. NOTICE: Tighten nuts as follows:
A. Hand tighten all nuts.
B. Tighten one nut snug.
C. Tighten opposite nut snug.
D. Proceed, tightening opposite pairs to a snug fit.
E. Recheck all nuts, using same pattern. Be sure all nuts are
tight and you have a good seal.
NOTICE: Do not ovettighten; you may twist studs off of tank.
If you have a torque wrench, tighten to 85 inch-pounds torque.
18. Stand tank on feet and reconnect piping.
19. Recharge tank to proper air pressure (see Page 5).
20. Reconnect hoses and pressure switch tube; prime pump
(above).
7

MAINTENANCE
Air Valve Replacement
1. Follow steps 1 through 5 under "Vinyl Bag Replacement",
Page 7.
2. Cut valve off as close to tank as possible. Push remaining por-
tion back into tank.
3. Tip tank on end and BE SURE al! water is drained from bag.
4. Ca_efially remove bag ring from lip on tank opening and push
bag ring back into tank; reach in mound it and remove cut off
portion of valve from tank.
5. Wipe a thin film of soapy solution on replacement valve and
from inside tank insert in hole in top of rank.
6. Pull valve through hole with pliers or a valve tool (available at
your local filling station or Automotive Center).
7. Follow steps 14 through 20 under "Vinyl Bag Removal °, Page
7, to reinstall bag in tank.
Testing for Bag Leakage
1. Follow steps 1 through 4 under _VinyI Bag Replacement",
Page 7.
2. Tip tank on end, valve down. Be careful not to break valve!
3. If bag leaks, water will run out of valve. If so, replace bag as in-
structed above.
DISASSEMBLY AND
ASSEMBLY OF PUMP
{_,_WARNING] Risk of electrical shock. Be sure unit is grounded
and power disconnected before attempting any work on pump or
motor.
Your pump is designed for ease in servicing. Should repair or re-
placement of the motor or seal be needed, the pump and piping
do not need to be disconnected or disturbed.
1. Disassemble pump as follows:
A. Disconnect power.
B. Remove pressure switch tube from pump body and aflow
pump to drain.
C. Remove four hexnuts and lockwashers (Key Nos. 24 and
23, Page 12) which hold the pump body to the motor.
D. Remove motor, seal plate, impeller, rubber pad and diffuser
(Key Nos. 1, 3, 7, 8 and 9, Page 12) as a unit. You may have
to pry gently with two screwdrivers between the motor
flange and the pump body to separate pump and motor.
2. Reassembly of pump:
A. Install O-Ring gasket on seal plate (Key Nos. 5 and 3,
Page 12).
B. Pick up a small amount of petroleum jelly on one finger and
spread eveniy over seal plate and venturi O-Ring gasket for
lubrication during reassembly. Be careful not to nick or
tear O-Ring.
C. Replace motor onto pump body; be sure rubber pad (Key
No. 8, Page 12) stays in place on top of diffuser. Remount
base on lower studs. Tighten four hexnuts and lockwashers
snugly (35-45 inch-lbs, torque). Do not overtighten.
D. Replace pressure switch tubing and motor wiring.
E. Prime pump according to instructions above.
F. Check for leaks.
Removing Motor for Service
and Replacing Shaft Seal
If it is necessary to separate motor and seal plate, always replace
the shaft seal. We suggest you purchase this item, U109_6A, and
have it on hand for future use.
NOTICE: The seal consists of two parts, a rotating member and a
ceramic seat. The surfaces of the seal are easily damaged. Read in-
structions carefully.
Remove motor as follows:
1. Disassemble pump per instructions above.
2. Remove diffuser and impeller as follows (Key Nos. 9 and 7,
Page 12).
A. Remove screws holding diffuser.
B. Loosen two screws and remove motor canopy from motor
(Key No. 1, Page 12).
C. Place 7/16" open end wrench on motor shafx flat.
D. Turn impeller cotmterclockwise when facing it.
8

MAINTENANCE
3. Remove seal plate from motor by inserting two screwdrivers
between the seal plate and the motor flange. Pry seal plate off
motor flange. This will force rotating portion of seal off shaft.
NOTE: Be sure you do not scratch shaft!
See Figures 7 &8.
MOTOR FLANGE ER
HALF
/POLISHED SURFACE
,_:/./_ OF FLOATING SEAL
//_ 3/4" PIPE
CUP SEAL _ ......
Figure 9
Figure 7
F. Reassemble seal plate to motor flange. BE SURE it is right side
up: index pins should be down; seal plate is marked at top. See
Figures 10A and lOB.
TOP OF MOTOR FLANGE
COPPER SEAT
FLOATING
SEAT
Figure 8
MEMBER
4. Place seal plate face down on flat surface and tap out ceramic
seat.
NOTICE: Do not force out copper insert, ff it has moved, leakage
will occur. See section on installing copper insert on Page 10.
Clean seal cavity.
InstaLl new seal.
5.
6.
A.
B.
C,
D,
E.
Clean polished surface of ceramic seat with clean cloth.
Wet outer edge of cup seal with petroleum jelly or detergent
solution.
With finger pressure, press firmly and squarely into cavity.
Polished face of seat faces inside of pump. If seat will not lo-
cate properly, place cardboard washer over polished face and
use piece of 3/4" standard pipe for pressing purposes. See
Figure 9.
Dispose of cardboard washer and dean surface of seat.
Clean motor shaft.
Figure I0A
SEALPLATE INDEX PINS
SLIDE IN HERE
MOTOR FLANGE SEAL PLATE
iNDEX PINS
Figure I 0B
G,
H.
Apply detergent solution to inside diameter of rotating seal
member.
Slide rotating member on shaft untO rubber drive ring tOts shaft
shoulder.
NOTE: Be sure you do not chip or scratch seal face on shaR
shoulder or seal will leak!
9

MAINTENANCE
I* Screw impeller on shaft (clockwise) while holding shaft with
7/16" open end wrench on shaft flats. This will automatically
locate seal in place. See Figure 11.
FACE OF
SEALING WASHER
SEAL
PLATE HOLES MUST
LINE UP
DIFFUSER
SHAFT
SHOULDER
RUBBER DRIVE RING
Figure I I
J. Remount dittuser on seal plate. Be sure diffuser is right side
up as follows (see Figures 7 and 8).
a. Rib next to priming hole should be at six o'clock position;
b. Part number (N1-28P) should be between nine o'clock and
ten o'clock.
c. Both mounting screws must engage screw holes in seal
plate. See Figure 12.
d. Be sure rubber pad (Figure 12; Key No. 8, Page 12) stays in
place on top of diffuser.
BE SURE RUBBER PAD
STAYSIN PLACE ON BE SURE SCREW
ENGAGES HOLE IN
SEAL PLATE
BE SURE NIBS
ENGAGE NOTCHES
Figure 13
Installing Copper Insert
NOTE: If the copper insert (Key No. 4, Page 12) moves or shifts
during seal removal, it should be removed and reinstalled.
1. Remove copper insert as shown in Figure 14. do not deform.
TO DISASSEMBLE
MOLDED
PART NO,
AT9:3O
O'CLOCK
RIBAT6O'CLOCK
Figure 12
BESURESCREW
ENGAGES HOLE
IN SEALPLATE
PRIMING HOLE
Figure 14
2. Replace copper insert:
A. Clean off surplus Permatex* from around insert cavity. Be
careful not to scratch or mark the machined bore. It is im-
portant that this area be clean so no old Permatex lodges
behind the new insert and causes improper seating.
*"Permatex" is a registered trademark of Permatex Co. Inc,
10

MAINTENANCE /HELPFUL HINTS
B. Place a small amount of No. 2 non-hardeding Permatex on
surface of insert as shown. Smooth out with finger. See
Figure 15.
Wipe on small amount of
non-hardening Permatex
on this surface
Figure 15
C. Pull insert into cavity as shown in Figure 16.
Socket
"Bo,,
Figure 16
Cleaning Shallow Well Jet
To remove debris from venturi or nozzle, proceed as follows:
1. Disassemble pump per instructions on Page 8.
2. Turn.venturi counterclockwise and remove it. The nozzle is
now exposed. Remove it using a 5/8" hex socket wrench with
extension. Turn counterclockwise. If socket wrench is not
available, insert an ice pick or similar pointed tool carefully into
the nozzle. This will dislodge debris.
3. Flush out the debris by running water through the nozzle in
the same direction as the dislodging tool was inserted.
4. Replace nozzle and venturi. Do not overtighten!
5. Reassemble per pump instructions on Page 8.
HELPFUL HINTS
How to Handle a Gaseous Well
In some areas well water contains gases which must be allowed to
escape before the water is used. This can be done as shown in
Figure 18.
wireto hold
pipe sleeve
D. Clean OUt any surplus Permatex from Insert cavity where
new seal will be located. See Figure 17.
Remove L_
SUrrP/US f_
ProperlyJ
Seated °",_
Figure I7
Cleaning Impeller
1. Follow steps 1A through 1D under "Disassembly and Assembly
of Pump _ on Page 8.
2. Remove diffuser and impeller from pump per instructions
tinder "Removing Motor for Service and Replacing Shaft Seal"
on Page 8.
3. Clean impeller and reassemble impeller and diffuser per in-
structions under "Removing Motor for Serivce and Replacing
Shaf_ Seal" on Page 8.
Not pipe
to vaJve
Scale
2369 0396 sleeve
cap
Figure 18
A good way of delivering gas-free water is to suspend a pipe, closed
at the bottom and open at the top, surrounding the suction pipe.
Since the gases rise in the well casing, the water sucked down
through the pipe and into the suction pipe is free of gas. This type
of well must be vented to the outside of any enclosure.
11

REPAIR PARTS
Pump Only
Model 390.2509
26
28
27,
25
/
24 \ 22
23
2
468
21 20 19
2305 0296
910
18 17
11
AVC
Port
/
13 /
12 J
12A /
12B
12

REPAIR PARTS
Key Qty.
No, Par[ Number Used Description
1# J218-953C 1 Motor - 115/230V
2C69-2 1 Water Slinger
3* N203-12P 1 Seal Plate Assembly
4 J3-2 1 Seal Plate Insert
5 U9-390 1 O-Ring
6 2784 1 Shaft Seal
7 J105-40PF 1 Impeller
8 C35-41 1 Rubber Pad
9 N1-28P 1 Diffuser
10 U30-738SS 2 Capscrew #10-16 Hex Head
11** N176-35PE 1 Pump Body Assembly
12 N76-35PE 1 Pump Body
12A U9-226 1 O-Ring
12B N166-5P 1 Check Valve
131- 1 Pipe Plug 1/8" NPT
14t 1 90° Hose Barb
15 U37-670P 1 Pressure Switch Tube
16 J20-18 1 Gasket
17 N76-29P 1 Pump Body Jet Insert
18 U30-742SS 4 Capscrew #10-16
19 N34P-19 1 Nozzle #45
20 N32P-66 1 Venturi
21 U9-201 1 O-Ring
22 J104-9F 1 Base Assembly Painted
23t 4 Lock Washer 3/8"
24t 4 Nut 3/8" - 16
25 C35-5 1 Rubber Pad
26 2781 1 Pressure switch
27t 1 Locknut 1/2"
28 L43-5C 1 Connector 1/2"
# For repair or service to motors, always give the motor model number and
any other data found on the motor model plate.
* Includes Key Nos. 4 and 5.
** Includes Key Nos. 12, 12A, 12B, and 16 through 21.
t Standard hardware item, may be purchased locally.
]3

REPAIR PARTS
Tank Only
9----_Q
2433 0596
23/
4
REPAIR PARTS
Key Qty.
No. Used Description
1
"t
2
3t
4
5
6
7
81-
9t
Pad Num_r
U231-285-S
U20-7
I
U31-442P
I
U78-770P
U19-55SS
U74-37X
U78-972P
I
1
1
1
1
6
1
2
1
1
1
1
Tank Assembly (Includes Diaphragm, Valve, Nuts, & Inlet Flange)
Bag - Vinyl
Air Valve with Cap
Inlet Flange
Nut 5/16-18 Hex
Elbow 3/4" MPT x 1" Insert
Clamp
Hose - 1"x 23"
Discharge Tee with Barb
1/2" x 1/8" NPT Reducer Bushing
1/8" NPT Pipe Plug
• Not illustrated, t Standard hardware item, may be purchased locally.
14

TROUBLESHOOTING GUIDE
TROUBLE POSSIBLE CAUSES REMEDIES
Motor will not run 1. Disconnect switch is off 1. Be sure switch ison
2. Fuse is blown 2. Replace fuse
3. Starting switch is defective 3. Replace starting switch
4. Wires at motor are loose, 4. Refer to instructions on wiring
disconnected, or wired incorrectly
5. Motor is wired incorrectly 5. Refer to instructions on wiring
6. Pressure switch contacts are dirty 6. Clean by sliding piece of plain paper between contacts
Motor runs hot and "1. Motor is wired incorrectly 1. Refer to instructions on widng
overload kicks off 2. Voltage is too low 2. Check with power company. Install heavier wiring
if wire size is too small. See wiring instructions
3. 3. See section below on too frequent cycling
Motor runs but no "1. 1. In new installation:
water is delivered
(*Note: Check
prime before look-
ing for other
causes. Unscrew
priming plug and
see if there is water
in priming hole)
Pump does not
deliver water to full
capacity (also check
point 3 immediately
above)
Pump pumps water
but does not shut off
Pump cycles too
frequently
Air spurts from
faucets
*2.
Pump cycles too frequently
Pump in a new installation did
not pick up prime through:
a. Improper priming
b. Air leaks
c. Leaking foot valve
Pump has lost its prime through:
a. Air leaks
b. Water level below suction of pump
3. Jet or impeller is plugged
4. Check valve or foot valve is stuck
in closed position
5. Pipes are frozen
6. Foot valve and/or strainer are
buried in sand or mud
1. Water level in well is lower than
estimated
2. Steel piping (if used) is corroded or
limed, causing excess friction
3. Offset piping is too small in size
1. Pressure switch is out of adjustment
or contacts are "frozen"
2. Faucets have been left open
3. Jet or impeller is clogged
4. Motor is wired incorrectly
5. Water level in well is lower than
estimated
1. Pipes leak
2. Faucets or valves are open
3. Foot valve leaks
4. Pressure switch is out of adjustment
5. Air charge too low in
Captive Air_ Tank
1. Pump is picking up prime
2. Leak in suction side of pump
3. Well is gaseous
4. Intermittent over-pumping of well
a. Re-prime according to instructions
b. Check all connections on suction line and jet
c. Replace foot valve
2. In installation already in use:
a. Check all connections on suction line, jet and shaft seal
b. Lower suction line into water and re-prime. If receding
water level in a shallow well operation exceeds
suction lift, a deep well pump is needed
3. Clean jet or impeller according to instructions
4. Replace check valve or foot valve
5. Thaw pipes. Bury pipes below frost line. Heat pit or
pump house
6. Raise foot valve and/or strainer above well bottom
1. A deep well jet pump may be needed (over 20 ft. to water
2. Replace with Plastic Pipe where possible, otherwise with
new steel pipe
3. Use larger offset piping
1. Adjust or replace pressure switch
2. Close faucets
3. Clean jet or impeller
4. Refer to instructions on wiring
5. Check possibility of using a deep well jet pump
1. Check connections, replace pipe fittings
2. Close faucets or valves
3. Replace foot valve
4. Adjust or replace pressure switch
5. Disconnect electrical power and open faucets until all
pressure is relieved. Using automobile tire pressure
gauge, check air pressure in tank at the valve stem
located at top of tank. If less than 30 pounds, pump air
into tank from outside source, until 30 pounds pressure
is reached. Check air valve for leaks, using soapy
solution, and replace core if necessary
1. As soon as pump picks up prime, all air will be ejected
2. Check suction piping, make sure joints are not sucking air
3. Change installation as described in manual
4. Lower foot valve if possible, otherwise restrict discharge
side of pump
15

SEARS
OWNER'S
MANUAL
ModelNo.
390.2509
Themodel number of
your Shallow Well Water
Systemwill be found on
the pump body.
When requesting service
or ordering parts, always
give the following
information:
•Product Type
• Model Number
• Part Number
•Part Description
I:RRFTSMRN°
1/2 HP SHALLOW WELL
WATER SYSTEM
Fortherepairor replacementpartsyouneed
Call7 am- 7 pro,7 daysa week
t -800-366-PART
(1-800-366-7278)
Forin-homemajorbrandrepairservice
Call24 hoursa day,7 daysa week
1-800-4-REPAIR
(1-800-473-7247)
Forthe locationof a
SearsRepairServiceCenterin yourarea
Call24 hoursa day,7 daysa week
1-800-488-1222
Forinformationonpurchasinga Sears
MaintenanceAgreementorto inquire
aboutan existingAgreement
call9 am-5 pm, Monday-Saturday
1-800-827-6655
SEARS
America'sRepair Specialists
Sears, Roebuck and Co., Hoffman Estates, IL60179 U.S.A.