Sears Craftsman 390.284021 User manual

OWNER’S
MANUAL
3-WIRE SUBMERSIBLE
PUMP MODEL Nos.
390.284021 390.284071
390.284031 390.284081
390.284041 390.284091
390.284051 390.284370
390.284061 390.284380
390.284390
CONTROL CENTER Nos.
390.284121 390.284251
390.284131 390.284261
390.284141 390.284271
2-WIRE SUBMERSIBLE
PUMP MODEL Nos.
390.285511
390.285521
390.285531
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
• Operation
• Troubleshooting
• Repair Parts
PRINTED IN U.S.A.
TWO and THREE WIRE
SUBMERSIBLE PUMPS
®
Form No. F642-9808 (Rev. 5/9/01)
3 WIRE
CONTROL CENTER

CONTENTS
Safety ...................................................................................2
Pump Performance/General Information...........................3
Before You Start/Tools/Materials........................................4
Installation
Piping ....................................................................4-5,8-12
Electrical........................................................................6-8
Helpful Hints.................................................................11-12
Parts..............................................................................13-15
INTRODUCTION
Please take a few minutes to read our instructions before in-
stalling your submersible pump. It will help to assure per-
fect installation and help you avoid needless service
expenses.
Carefully read and follow all safety instructions in this man-
ual or on pump.
This is the safety alert symbol. When you see this sym-
bol 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 serious
personal injury, death or major property damage if ignored.
warns about hazards that can cause serious
personal injury, death or major property damage if ignored.
warns about hazards that will or can cause
minor personal in jury or property damage if ignored.
The word NOTICE indicates special instructions which are
important but not related to hazards.
To avoid risk of serious bodily injury and property
damage, read safety instructions carefully before in-
stalling pump.
1. Under certain conditions, submersible
pumps can develop extremely high pres-
sure. Install a pressure relief valve capable
of passing entire pump flow at 75 PSI (517kPa).
Do not allow pump, pressure tank, piping, or
any other system component containing water
to freeze. Freezing may damage system, leading to in-
jury or flooding. Allowing pump or system compo-
nents to freeze will void warranty.
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 foreign material from falling into well,
contaminatingthewellandpossiblydamagingthepump.
4. Protect pump and piping system from freezing. Allowing
pump or water system to freeze could severely damage
pump and voids warranty.
5. Toprotectsystem againstover-pressure,installapressure
relief valve (Stock No. 27229).
6. With a new well, test well water for purity before using.
Consult your local Health Department for procedure.
Hazardous voltage. Can shock, burn,
cause death, or start fires.
7. Disconnect electrical power source before installing or
working on pump.
8. Use pump only in a well application.
9. Correct fusing, wiring and grounding are essential to
proper operation. See Page 6 for electrical instructions.
10. Line voltage and frequency listed on motor nameplate
must agree with line voltage and frequency of electrical
power supply.
11. Use of fuses or wire smaller than size recommended in
owner's manual can cause overheating, possible fires,
and will void warranty.
2
FULL ONE YEAR WARRANTY ON CRAFTSMAN®HYDROGLASS®SUBMERSIBLE WELL PUMPS
For one year from the date of purchase, Sears will repair or replace this pump, free of charge, if defective in material or
workmanship.
LIMITED WARRANTY ON CRAFTSMAN®HYDROGLASS®SUBMERSIBLE WELL PUMPS (not including Controls)
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 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 use 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

GENERAL INFORMATION
NOTICE: Model Number of your pump is located on the
pump shell. Record this number and keep in a safe place for
future reference in the event service is needed.
Themostimportantthingsyoushouldknowaboutyourwell
are: (1) its total depth; (2) depth to water; (3) draw down
water level.
1. The well total depth is the distance from the ground
level to the well bottom.
2. Depth to water ismeasuredfromthegroundleveltothe
water level in the well when the pump is not running.
3. Draw down water level is the distance from ground
level to the water level while water is being pumped. In
most wells, the water level drops when water is being
pumped.
Usually you can obtain this information from your well
driller. Enter it in box at right.
3
Record the following information at the time of
installation and retain it for future reference:
Pump Model No.
Control Center Model No.
Horsepower
Volts
Phase
Hertz
Full Load Amps
Well Casing Diameter
Well Depth
Depth to Water
Draw Down Water Level
Table I - Pump Performance Chart (In Gallons Per Minute)
Residential Pumps with 1-1/4” Discharge
Discharge
Model Pressure Pumping Depth in Feet *
Number H.P. Voltage Stages P.S.I. 20 40 60 80 100 125 150 175 200 250 300 350 400
390.285511 1/2 115 6 40 13.6 12.6 11.5 10.1 8.6 – – – – – – – –
390.285521 1/2 230 6 40 13.6 12.6 11.5 10.1 8.6 – – – – – – – –
390.284021 1/2 230 6 40 13.6 12.6 11.5 10.1 8.6 – – – – – – – –
390.285531 3/4 230 8 40 – – 13.5 12.7 11.9 10.7 9.4 7.9 – – – – –
390.284031 3/4 230 8 40 – – 13.5 12.7 11.9 10.7 9.4 7.9 – – – – –
390.284041 1 230 10 40 – – – – 13.5 12.9 11.9 10.9 9.8 7.4 – – –
390.284051 1-1/2 230 14 40 – – – – – – – 13.5 12.9 11.7 10.4 8.9 7.1
High Capacity Pumps with 1-1/4” Discharge
390.284061 1 230 7 40 26.4 24.7 22.7 20.7 18.4 – – – – – – – –
390.284071 1-1/2 230 9 40 – – 25.8 24.3 22.9 21.0 18.8 15.4 – – – – –
390.284081 2 230 12 40 – – – – 26.4 25.1 23.7 22.2 20.8 17.2 – – –
390.284091 3 230 17 40 – – – – – – – 26.7 25.5 23.8 21.7 19.6 16.8
Extra-High Capacity Pumps with 1-1/4” Discharge
390.284370 1-1/2 230 6 40 36.0 33.5 30.8 – – – – – – – – – –
390.284380 2 230 8 40 – – 36.6 34.8 32.8 29.8 – – – – – – –
390.284390 3 230 12 40 – – – – 38.8 37.3 35.9 34.5 32.6 28.3 – – –
Circuit AWG
Control Max Breaker Cable Size
Model Box Load Rating
Number Type No. HP Volts Amps (Amps) 12 10 8
390.285511 2-Wire – 1/2 115 12.0 30 160 250 390
390.285521 2-Wire – 1/2 230 6.0 15 650 1020 1610
390.285531 2-Wire – 3/4 230 8.0 20 480 760 1200
390.284021 3-Wire 390.284121 1/2 230 6.0 15 650 1020 1610
390.284031 3-Wire 390.284131 3/4 230 8.0 20 480 760 1200
390.284041 3-Wire 390.284141 1 230 9.8 25 400 630 990
390.284061 3-Wire 390.284141 1 230 9.8 25 400 630 990
390.284051 3-Wire 390.284251 1-1/2 230 11.5 30 310 480 770
390.284071 3-Wire 390.284251 1-1/2 230 11.5 30 310 480 770
390.284370 3-Wire 390.284251 1-1/2 230 11.5 30 310 480 770
390.284081 3-Wire 390.284261 2 230 13.2 25 250 390 620
390.284380 3-Wire 390.284261 2 230 13.2 25 250 390 620
390.284091 3-Wire 390.284271 3 230 17.0 40 190 300 470
390.284390 3-Wire 390.284271 3 230 17.0 40 190 300 470
Max. Cable
Length in Feet –
Disconnect
switch to motor
}
}
Max. Cable
Length in Feet –
Disconnect
switch to motor
*Pumping depth in feet is the maximum distance to water from ground level. This maximum distance (drawdown water level) occurs while pump is operating.
In most cases, when pump is not running, the water level will rise to a higher point in the well.
TABLE II - Fusing, Wiring and Cable Selection (Copper Conductors Only)

INSTALLATION
If depth of well and the distance to the water level in the
well are not known, proceed as follows:
1. Tieanobjectthatwill float to theendofaball of string and
drop it into the well.
2. When float hits water and string becomes slack, mark the
string and pull float from well. Measure distance between
mark and float for the water level in the well.
3. Remove float, replace with a heavy object that will sink in
water and drop it into the well until string becomes slack.
Mark string and pull object from well.
4. Measure distance between mark and object for depth of
well.
Ifdrawdownwaterlevelis not known, set pump 5feetfrom
the bottom of the well.
Basic Tools and Materials Needed
Study Figures 1 thru 3. Figure 1 shows the piping and elec-
trical connections of a submersible pump in a well. Figure 2
shows typical installation of a Captive Air® Tank System.
Figure 3 shows typical installations of a Standard Air Tank
System. These illustrations will help you determine what
materials you will need for piping.
Plastic Pipe Installation
Tools: Knife, Wire Cutters, Pliers, Screwdriver, Hammer,
Adjustable Wrench, Hacksaw, Pipe Wrenches (2).
4
Standard Air Tank Installation Captive Air Tank Installation
®
Power
Cable
Power
Cable
Nylon
Tape
Nylon
Tape
Safety
Rope
Well Seal
(Purchase
Locally)
Conduit or
Sleeve
Cable
Splices
Plastic
Pipe
Adapter*
Plastic Pipe
Adapter*
Pump
Check
Valve
Torque
Arrester
(Purchase
Locally)
Centering
Guide
1178 0794
* Plastic pipe adapter, pipe
clamps, and torque arrester
used only with plastic pipe. Splice Cables
Like This – Not Like This
4"
2 Ft.
Galvanized
Pipe up
through well
seal
Pipe Tee
with Plug Plastic Pipe
Adapter
Pipe
Clamps*
Power
Cable
Nylon
Tape
Safety
Rope
Well Seal
(Purchase
Locally)
Conduit or
Sleeve
Cable
Splices
Plastic
Pipe
Adapter*
Pump
Bleeder
Orificies
Check
Valve
Centering
Guide
Torque
Arrester
(Purchase
Locally)
3 Ft.
To Tank
To Tank
2 Ft.
Plastic Pipe
Adapter
3 Ft.
Pitless
Adapter
Electrical
Service
To Tank
Pitless
Adapter
Electrical
Service
Vent
Sanitary Well Seal Pitless Adapter Sanitary Well Seal
Pitless Adapter
Galvanized
Pipe Galvanized
Pipe
Figure 1: Typical Well Pipe Installations
Pressure
Relief Valve
Stock No. 27229
Pressure
Switch
Stock
No. 2782
Pressure Gaug
e
Stock No. 2768
Submersible
Pump Manifold Kit
Stock No. 27221
To Service
To Pump
Motor
Electrical
Disconnect
Box
Control
Center†
From
Well 12"
Max. 959 0594
Relief
Valve
To
Service
To Pump
Motor
Electrical
Disconnect
Box
Control
Center†
From
Well 12"
Max. 963 0594
Gate
Valve
Union
Air
Volume
Control
Relief
Valve
Figure 2: Captive-Air®Pressure Tank Installation
Figure 3: Standard Pressure Tank Installation
† NOTICE: Control Center is used with 3-wire pumps
only. For 2-wire pumps, run cable directly from pres-
sure switch to motor.
Manifold
Detail

INSTALLATION
Materials: PlasticPipeandFittings(asrequiredtocomplete
job); Teflon Tape (DO NOT use pipe joint compound on
plastic fittings); Centering Guides - Stock No. 2724.
Galvanized Steel Pipe Installation
Tools: Knife, Wire Cutters, Pliers, Screwdriver, Hammer,
Adjustable Wrench, Hacksaw, Pipe Wrenches (2), Pipe
Cutting and Threading Tools.
Materials: GalvanizedPipeandFittings(asrequiredtocom-
plete job); Pipe Joint Compound or Teflon Tape; Centering
Guides - Stock No. 2724.
Safety Pressure Relief Valve Stock No. 27229
For your protection, install this pressure relief valve.
Purchase from your local Sears Store.
This relief valve is designed to protect home water systems
fromexcessive pressure. Itis factory presetto start relieving
pressure at 75 PSI (pounds per square inch). Use only on
home water systems with pumps listed in this Owners
Manual.
1. For maximum protection, locate valve within 2 ft. of the
pressure tank.
2. Install valve directly in pipe tee. Do not use any reducers
or pipe extensions. Tee must be located in main pump
supply line to tank. See diagram Page 4.
3. Protect relief valve from freezing, dirt, and any other pos-
sible damage that would cause the valve not to function.
4. Longlengthsofpipeor hose connected to the reliefvalve
dischargeportcan limittheamountofwaterand pressure
that can be relieved. If necessary to pipe away from relief
valve, use minimum 1-1/4” plastic pipe.
5. Protect everything in the immediate area of the relief
valve from water damage in the event the relief valve op-
erates.
Gauge
A Pressure Gauge, Stock No. 2768, can be installed. It will
indicate the pressure at which pump starts and stops and
any pressure in between.
The Motor
The motor is water filled type, and is ready to run as re-
ceived.
Pressure Switch
Install an automatic pressure switch (Stock No. 2782) set to
start pump at 40 lbs. pressure and stop pump when the sys-
tem pressure reaches 60 lbs. See Figures 2 and 3, Page 4.
Tank
The tank serves two functions. It provides a reservoir of
water, which can be drawn off through the house fixture.
The tank maintains a cushion of air under pressure. When
tank pressure falls far enough, pump will start.
Twotypesof tanks are available:CaptiveAir® and Standard.
The Air Volume Control (AVC) maintains the cushion of air
in Standard Tanks. No Air Volume Control is needed with a
Captive Air® Tank.
Air Volume Control
A device mounted on a standard tank in order to keep
enough air in the tank to prevent waterlogging the tank.
Operating a water system with no air cushion in the pres-
suretankcancausewaterhammer,rapid pump cycling, and
damage to the system.
Engine–Generators For Submersible Pumps
Listed are the minimum Watt ratings for Engine Generators
required to power your Submersible Pump motor in the
event of an electrical power failure.
Any additional loads, such as lights, must be added to these
loads, and the correct size used.
Be sure your generator is the same voltage as your sub-
mersible motor. See Table II, Page 3.
Overload Protector
Thisisasafetyswitchwhichopenswhenamomentaryshort
or surge of power occurs or when the pump is stuck or
locked with sand. It prevents the motor from burning out.
It is built into the pump motor (2-Wire motors and 1/2
through 1 HP 3-Wire motors) or the Control Center (1-1/2
through 3 HP 3-Wire motors). 1/2 through 1 HP motors au-
tomaticallyrestartafterthemotorcools.Iftheprotectorcon-
tinues to open, the trouble should be located before
continuing operation. 1-1/2 through 3 HP motors must be
manually reset at control center.
Centering Guides
Install centering guides (Stock No. 2724) to keep the pump,
pipe, and electrical cable from coming in contact with the
well casing wall. Purchase separately.
Control Center (3-Wire Pumps only)
The control center contains the electrical equipment (other
than the pressure switch) needed to start and run a 3-Wire
motor.
Mark mounting screw locations on the wall and hang con-
trol center as close to pressure tank as possible. BE SURE to
mount Control Center so that it hangs vertically and is level.
It may not function normally otherwise.
NOTICE: Referencesto“2-Wire”or“3-Wire”motorsreferto
the load-carrying wires running to the motor. All motors
have a ground wire in addition to the load conductors, so
that you will see four wires when looking at a “3-Wire”
motor (3 load conductors plus a ground wire), and three
wires when looking at a “2-Wire” motor (2 load conductors
plus a ground wire). “3-Wire” motors require an electrical
disconnect switch plus a Control Center; “2-Wire” motors
use only an electrical disconnect switch.
5
Pump Minimum Watt
Motor Rating of Generator
HP 3-Wire Motors 2-Wire Motors
1/2 2,000 2,400
3/4 3,000 2,900
1 4,000 –
1-1/2 5,000 –
2 7,500 –
3 10,000 –