Craftsman 3902532 User Manual PUMP Manuals And Guides L0502570

CRAFTSMAN Pump Manual L0502570 CRAFTSMAN Pump Owner's Manual, CRAFTSMAN Pump installation guides

User Manual: Craftsman 3902532 3902532 CRAFTSMAN PUMP - Manuals and Guides View the owners manual for your CRAFTSMAN PUMP #3902532.

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SEARS
OWNER'S
MANUAL

MODEL NO.
390.2.532

I:RRFTIMRN °
CAUTION:
Read and Follow
All Safety Rulesand
Operating Instructions
Before First Use of
ThisProduct.

MULTI-STAGE JET PUMP
• Safety Instructions
• Installation
• Electrical

Save ThisManual For
Future Reference.

• Operation
• Maintenance
• Repair Parts

Sears, Roebuck and Co., Hoffman Estates, IL 60179
PRINTED

U.S.A.

U.S.A.
Form No.

F642-040T7

(8/6/04)

CONTENTS
INTRODUCTION/WARRANTY

INTRODUCTION

..................................

MAJOR COMPONENTS ..............................................
PUMP PERFORMANCE ...............................................

3
4

INSTALLATION ........................................................

4-8

ELECTRICAL ............................................................
OPERATION ........................................................
HELPFUL HINTS / MAINTENANCE .....................
TROUBLESHOOTING

8-9
10-11
11-14

GUIDE ..................................

REPAIR PARTS .....................................................

Please read our instructions before installing and using
your Deep Well Jet Pump. 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 covered by our warranty.

15
16-19

RULES FOR SAFE INSTALLATION
Carefully read and follow
manual or on pump

all safety instructions

in this

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!

ous personal
ignored.

Warns about

hazards

injury, death

or major property

[AWARNING] Warns
cause serious personal
damage if ignored.
[_

CAUTION

about

that will

hazards

injury, death

cause seri-

that will
or major

damage

or can
property

] Warns about hazards that will or can cause

minor personal

injury or property

The word
NOTICE
which are important

damage

if ignored.

indicates
special
instructions
but not related to hazards.

1. To avoid risk of serious bodily injury and property
damage, read safety instructions
carefully 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, contaminating well and possibly damaging pump.

AND

OPERATION

4. Protect
pump and piping system from freezing.
Allowing pump or water system to freeze could
severely damage pump and voids warranty.
[AWARNING] To avoid serious
injury
and equipment
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_Hazardous voltage.
cause death, or start fires.
6. Disconnect
electrical
power
stalling or working on pump.

Can shock,
source

burn,

before

in-

7. Ground pump with a ground wire nan 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.
10. This pump is a deep well jet pump. It is not designed or intended for shallow well use. Use in a
deep well (more than 25' depth to water).

MAJOR

COMPONENTS

AND

WHAT

THEY

Tank and Air Volume Control

Adapter

The tank serves two functions:

The VMS pump is equipped
with an adapter flange.
This adapter facilitates installation
and removal of the
pump without disturbing piping. See Pages 6 and 7 for
more information.

It provides a reservoir of water. Some of this water
is drawn offwhencver
a house ftxture is opened (so
that the pump doesn't need to start every time you
open a tap).
It maintains a cushion of air under pressure.
A standard
tank requires an Air Volume Control
(AVC) to add air to the tank when needed. See the
instructions
included with the AVC for details of installation and operation.

A Captive Air* tank maintains a constant
precharge of
air in the tank and does not require an AVC. An annual
check on the tank pre-charge pressure is recommended.
Impeller
The pump's
impeller
rotates with the motor shaft,
causing the water to fly out from its rim by centrifugal
force. The rotation of the impeller, along with the motion of the water, creates a vacuum at the center of the
impeller
(the "eye" of the impeller)
which pulis in
more water.
The Vertical Multi-Stage
(VMS) pump has two impellers; the water feeds through
them one after the
other, with each impeller adding to the pressure. This
allows the VMS jet pump to pull water from greater
depths and at a higher pressure than a conventional
single stage jet pumps.

Pressure Relief Valve
Under certain conditions,
VMS pumps can generate
very high pressure. The pressure relief valve is installed
to make sure that the pressure in the system does not
exceed the pressure which the system can carry safely.
The pressure relief valve must be able to pass all the
water the pump can produce at the system's rated pressure. Install a relief valve (Sears Stock No. 2729) set to
open at 75 PSI. between the pump and the rank. There
should be no shutoff valves between the pump and the
relief valve. See Figures 11 and 12, Page 8, for more information.
Pump

Mounting

The pump base has three equally spaced 3/4" NPT
threaded
sockets. These will take threaded
pipe for
legs, to allow enough room to make piping connections under the pump.
In the case of a single pipe installation (see below), the
pump can be placed directly over the well, using the
offset nipple furnished with the casing adapter to connect the pump to the well head.

Piping

Jet
The jet is a nozzle/ventllri
arrangement
installed in the
well which drives water up to the pump from the well,
boosting the water pressure going into the impellers.
The jet allows water to be lifted from a greater depth
than would be possible with only the impeller eye's
vacuum. In order to drive the jet, part of the discharge
stream from the pump is diverted
back "down the
hole" to the jet to help lift water from the well into the
pump suction.
Pressure

Flange

Regulator

The pressure regulator
vert the correct amount
most efficient operation.
pressure regulator may
pump's life (see Page
pump's efficiency.

is adjusted at installation to diof water back to the jet for the
Under certain conditions,
the
require adjustment
during the
10) to restore or maintain the

Pressure Switch
The pressure
switch automatically
starts the pump
when the pressure in the tank drops to 40 pounds per
square inch (PSI) and stops the pump when the tank
pressure reaches 60 PSI.

When installed on a 'double pipe' jet, one pipe is the
pressure or drive pipe; this pipe sends water down into
the well to the jet. The other pipe is the suction pipe;
this pipe carries water up to the pump suction from
the jet. Because of the pressure
requirements
and
depth of multi-stage
jet pump installations,
use the
chart below for pipe selection.
When installed on a singe pipe jet, the well casing
serves as the drive pipe, carrying water to the jet. The
drop pipe inside the well is the suction pipe, carrying
water up to the pump from the jet.
Use a 'single pipe' system for a 2" or 3" well; use a 'double pipe' system for a 4 _ or larger well. See Pages 6 and
7 for details. Follow instructions
packed with jet package to get proper nozzle and venturi combination
for
your pumping depth.
Use 1-1/4" pipe for both suction and drive pipes. A 1"
nipple, a 1-1/4"xl"
facing bushing, and a 1-1/4 _ coupling are included in the jet package. These must be
used with the jet. (See Figure 8, Page 6, for installation
details.)

PUMP PERFORMANCE

Multi-Stage
Pump Performance
Pump
Stock
No.

390.2532
1 HP

Pump

(in gallons per minute)

Jet
Pkg.
No.

Discharge
Pressure
P.S,I,

Pumping Depth In Feet
90
100
110
120

140

160

180

2967*

40
60

11.3
10.6

10,0
8.6

8.8
7.5

7,6
6.5

6,5
5.5

5,0
4,8

5,0
4.8

5,0
4.7

4.2
3.9

3,5
2.7

2.0
1.5

29902**t

40
60

11.7
11.0

11.1
9.5

10.2
8.6

9.2
7.8

7.8
6.6

6,4
5.4

5.1
4.7

5.0
4.6

4.5
4,2

4.0
3.4

3.2
2.6

2.1
1.7

29660***

40
60

11.7
11.O

11.1
9.5

10.2
8.6

9.2
7.8

7.8
6.6

6.4
5.4

5,1
4.7

5.0
4.6

4.5
4.2

4,0
3,4

3.2
2,6

2.1
1.7

210

Use 160 PSI Min. Rating Plastic Pipe.
* Jet Package No. 2967- 2" Single Pipe (use 1-1/4" galvanized pipe).
** Jet Package No. 29902 - 3" Single Pipe (use 1-1/4" galvanized pipe).
*** Jet Package No. 29660 - 4" Double Pipe.
t

Must be ordered through Sears Product Service, 1-800-366-7278.

INSTALLATION
NoAir Leaks
in Suction Pipe.

_
_amage

Pipe Joint
Compound Will
Plastic.

If Air Flows
Water Won't
Use New Pipe for Best Results.

Clean FJow!
1096 0697

From
Well

Figure

I - No Dirt or Scale in Suction Pipe

Use Teflon Tape.

Figure 4 - Suction

1102 0697

Pipe Must Not Leak

!
Figure 2 - Foot Valve
Must Work

Freely
Figure 3 - No Air
Pockets in Suction Pipe

_,_
Figure 5 - Use Pump On Deep Well Only

INSTALLATION
NOTICE:
For proper
performance,
pump MUST be
matched
to ejector and to well depth. Use this pump
on wells 25' to 210' deep.
1. Long runs and many fittings increase friction and reduce flow. Locate pump as close to well as possible:
use as few elbows and fittings as possible.
2.
3.

4.
5.
6.
7.

Piping

See Figures

Deep

Well

6, 7, and 8.

NOTICE: Deep well instaUations are either single pipe
(2" wells) or double pipe (4" and larger wells). In a double pipe installation, the larger pipe is the suction pipe
and the smaller pipe is the drive pipe (very deep wells
may use suction and drive pipes of the same diameter).

Be sure well is clear of sand. Sand will plug the
pump and void the warranty.
Protect pump and all piping from freezing. Freezing
will split pipe, damage pump and void the warranty.
Check locally for frost protection
requirements
(usually pipe must by 12 _ below frost line and
pump must be insulated).
Be sure all pipes and foot valve are clean and in
good shape.
No air pockets in suction pipe.

Plastic pipe is ideal for double pipe instaUations. Due to
its light weight, it is easy to handle and does not usually
require a block and tackle for instaUation and removal.
Double

Pipe Installation

- Plastic

Pipe

NOTICE: Use Teflon tape on all male threads on plastic
pipe and fittings to prevent air leaks in suction piping.

No leaks in suction pipe. Use Teflon tape or PlastoJoint stik to seal pipe joints.

Inspect ejector to make sure that nozzle
turi openings are clean and clear.

Inspect

NOTICE:
openings

Match pump to well.
IMPORTANT: Flow into well must at least equal
flow out through pump!
Unions installed near pump and well will aid in servicing. Leave room to use wrenches.

pipe for any foreign matter
Make sure that no foreign
while installing pump.

and ven-

or obstructions.

matter

enters

pipe

Make sure foot valve operates freely: attach to ejector with a close nipple. Use Teflon tape on male
threads.

Install nozzle and venturi in deep well ejector.
Using Teflon tape on male threads, install special
plastic pipe adapter
(supplied
with ejector)
by
screwing adapter into 1-1/4" tapped hole in ejector
body (see Figures 6 and 8 below).

I_, CAUTION]Motor normally 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 it to cool for 20 minutes.

Pnming
Tee and

In The

Gasket

Piug

Suction: 1-1/4"
Ddve:
1-1/4" Pipe

Pipe or Plastic
Pipe Adapter

)e Nipple

Pipe
or
Plastic

_Coppling

1-1/4"
pe
pe
Adapter. (SuPplied with Ejector)

1-1/4x1"
Face

Ipe Adapter

1' Ni

heckValve
1386 1194

trainer
1461 O_g5

Figure 6 - Offset

Installation

Plastic Pipe Shown

Figure 7 - Over the Well Installation
Steel Pipe Shown

Figure 8 - Jet Assembly With
I" and I-I/4" Drive
Pipes

INSTALLATION
6.

Thread a 1" plastic pipe adapter or a 1" nipple into
the 1" tapped hole in ejector body (see lfigure 8).

Install sufficient plastic pipe in well casing to place
ejector
at the proper
depth.
(Your well driller
should supply this information.)

NOTICE: As a guide, the ejector should be set at least
10 to 20 feet below the lowest water level with pump
running, if possible, but always at least five feet from
the bottom of the well.
8.

Tighten all hose clamps securely on plastic pipe.
Use two clamps per joint to prevent air leaks into
suction pipe. Clamp screws should be on opposite
sides of the pipe. Fill pipes with water to make sure
that foot valve and connections
do not leak.
Install sanitary well seal on top of well casing; use
steel nipple through well seal as shown in Figure 6.

NOTICE:
Align locating lugs on adapter
flange
pump base so that pump discharge will be aligned
piping.
10. Install 1" nipple in one side of adapter flange.
threadless
coupling
down over drive pipe
well. Thread adapter flange onto suction pipe
well and align nipple and drive pipe.
11. Slide threadless
drive pipe.

coupling

up and secure

and
with
Slide
from
from

nipple

12. Remove paper backing from adhesive gasket. Apply
gasket to adapter flange, making sure that holes line
up.

13. Align locating lugs on pump base with locating lugs
on adapter flange; attach pump to flange with cap
screws provided.
14. See "Discharge Pipe Sizes" for information
hag correct discharge pipe size.
Steel

regard-

Piping

The special adapter nipple is not used with steel piping.
To more safely lower steel piping into the well, build a
tripod out of 2x4 lumber. A couple of pipe clamps can
also be made of 2x4s secured
with 1/2" bolts (see
Figure 10B). Always install the coupling at the top end
of the pipe joint and install the pipe clamp below the
coupling. This will prevent accidentally
dropping
the
pipe into the well if the clamp slips. With steel pipe,
be sure all joints are clean and the ends reamed before
installing; use teflon tape or pipe joint compound
at
each joint to prevent leakage.
Use a lever hoist (a "come-along")
to lower pipe into
well (see Figure 10A). As each section of piping is lowered into the well, fill it with water. This will help
prime the system and also serves as a check on leaks

Pump
mounted
on Casing

Lever Hoist

Pipe Clamp -

serves as
Drive Pipe

Waterlevel
with pump

Pipe Clamp

_ll_-L

Pipe

riiing

1Oto20

Feet

Figure I 0A - Use tripod
pipe into the well

and lever hoist to lower

Leathers
5 Feet
or mere

Figure 9

Figure

I 0B - Pipe clamp detail

INSTALLATION
which
piping
Single

may occur in the piping
is assembled.
Pipe Ejector

and foot valve as the

Discharge

b. Leather
valve.

packer-type

c. Turned couplings
ejector).
d. Well casing
ejector).
1.

ejector

with

built-in

foot

(supplied

with

packer-type

(supplied

Model

Offset

Pipe Sizes

Up to 25'

Standard

Suct.

Drive

1-1/4" %1/4"

25' to 100'
Suct.

Drive

1-1/2" 1-1/4"

Drive

- Deep

Well

Tank Connection

Add lengths of pipe until the ejector reaches the
proper depth. (Your well driller should supply this
information.)

NOTICE: As a guide, the ejector should be set at least
10 to 20 feet below the lowest water level with pump
running, if possible, but always at least 5 feet above the
bottom of the well (see Figure 9, Page 7).
4. To properly
seat the cup seals, after the ejector is
correctly
positioned
move the assembly up and
down slightly. Water pressure in the casing will then
soak the cup seals (see Figure 9). They should seal
in 2-3 hours after installation.
5.

Installation

When a standard tank is used, an air volume control
(AVC) adds air to the tank when it is needed. See Figure
11 for typical standard
tank installation.
To connect
AVC to pump, thread a 1/8" compression
fitting into
tapped hole on the front of the pump. Cut tubing to
length to reach AVC; assemble to fitting on pump and
to AVC on tank. See installation
instructions
provided
with tank and AVC for details.

100' to 300'
Suct.

Tank

The Pressure Tank provides a reservoir of water under
pressure and maintains cushion of air pressure to prevent pipe hammering
and possible damage to plumbing components.
When water is drawn off through
house fixtures, the pressure in the tank is lowered and
the pressure switch starts the pump.

NOTICE: Fill pipe with water as each length is added
to be sure foot valve and connections
do not leak.
3.

When the pump is set away from the points of water
use, the discharge pipe size should be increased to
reduce pressure losses caused by friction.
• Up to 100 ff run: 1"
• 100 ft. to 300 ft run: 1-1/4"

Pressure

When the pump is set more than 25' to one side of the
well, increase the horizontal
pipe size to reduce friction. Never use pipe smaller than the pump port size.

390,2532

with packer-type

Lower pipe into casing. Use special turned couplings (included with single pipe ejector package)
to increase water flow. Use pipe joint compound
sparingly on male couplings threads.

Pump

If increasing discharge pipe size, install reducer in
pump discharge port. Do not increase pipe size by
stages.

• 300 ft. to 600 ft rim: 1-1/2".

adapter

Connect
ejector to first length of pipe. Use pipe
joint compound
sparingly on male threads.

Horizontal

Installation

Single pipe installations
require (see Figure 9):
a. Galvanized steel suction pipe.

Pipe Sizes

Air Volume Control
Sears Stock No. 2761

TANK

To Service

Pump to Tank Piping
1" Discharge

Regulator

Relief Varvs Sears i
Stock No. 2729

_._
j

With ejector set, install well casing adapter. Remove
pipe holder. Align locating lugs and tighten adapter
to form seal with well casing.

AVC Fitting

Air Volume Control Tubing!Fitting _
Sears Stock No. 27881
Well Seal
_,55

Figure

I I - Pump With

Standard

Tank

b _97t_

PRESSURE
Precharged

TANK

CONNECTION

ELECTRICAL

Tank Connection

Disconnect
pump,
motor,

When a precharged
tank is used, no AVC is necessary
See Figure 12 for typical precharged
tank installation.
A precharged
tank contains
a factory
provided
air
charge.
NOTICE: Your pump pressure switch is set for a 4060 PSI
range and requires a tank pre-charge of 40 PSI for proper
operation (see Figure 13). See tank owner's air charge. An
annual check on tank charge is recommended.

Motor

Switch

power
pressure

before
working
on
switch,
or wiring.

Settings

If the 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:
line.
Remove

Never
Motor

wire a 115 volt motor

to a 230 volt

End Cover

Pressure
Regulator

Piping Tee and
1" Discharge
To Service

Figure

2358b0697nc

12 - Pump With

Relief Valve

Captive-Air*

Tank
Figure

14 - Removing

Motor

End Cover

You will need to remove the motor end cover to
change the voltage setting. The illustration above also
shows the pressure switch. If the power supply connection still needs to be made, the pressure switch
cover will need to be removed.

Check Pressure with
Tire Gauge

Your motor terminal board (located under the motor
end cover) should look like one of those below.
Plug Type Voltage

10_

Figure

13 - Checking

Selector

0_97n¢

Tank Pre-charge

Ground Wire ConnsctJon

Figure
8

15 - Voltage

Pressure Sw=tch

Set To 230 Volts, Plug Type

ELECTRICAL
To change
to I 15 volts:
1. Make sure power is off.

ranty. The supply voltage must be within
motor nameplate
voltage.

2. Pull the ping toward you.
3. Move and attach the plug at the 115 volt position.
The plug vfdl now cover 2 metal tabs.
4. Reinstall the Motor end cover

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.

5. Go to Wiring

Connections

Dial Type Voltage

+10% of the

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.

below.

Selector
Connections

Motor wires connect here.
pply wires connect here.
230 Volt: Connect 2 hot wires (black and red
here and cap the wh te neutra wire. t does
not matter which wire goes to which screw.
115 Volt: Connect one hot wire (black or red)
to one ctfthese screws (i1doesn't matter
which one). Connect the white (neutral) wire
to the other screw, Cap any remaining
black or red wires.

on the terminal screws.

prevent strain

- Connect the green (or bare copper) ground wire
to the green ground screw.

Figure
Figure

16 - Voltage

17 - Pressure Switch Wiring

Set To 230 Volts, Dial Type
Connection

To change
to I 15 volts:
1. Make sure power is off.
2. Turn the dial counter-clockwise
the dial window.
3. Reinstall

the Motor

until 115 shows

end cover

4. Go to Wiring Connections

below.

[_,WARNING]Hazardous
voltage.
Can shock, burn,
or kill. Connect
ground
wire before
connecting
power
supply wires. Use the wire size (including
the ground
wire) specified
in the wiring
chart. If
possible, connect
the pump to a separate branch circuit with no other appliances
on it.
IAwARNING] Explosion
a gas supply fine.
Wiring

31870398

hazard.

Do not

ground

1. Connect the ground wire first as shown in Figure 14.
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 underground
water pipe, to a
metal wen 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
switch as shown in Figure 17.

Connections

Fire hazard.
a fire or seriously damage

Procedure

Incorrect
the motor

to the pressure

voltage can cause
and voids the war-

WIRING
MOTOR
lip

VOLTS

MAX. LOAD
AMPS

115/230

19.2/9.6

CHART

- Recommended

BRANCH FUSE* I
RATING (AMPS)
25/15

Wire

and Fuse Sizes

DISTANCE IN FEET FROM MOTOR TO METER
0 to 50
10/14

(*)Time delay fuse or circuit breakers are recommended in any motor circuit.

51 to 100
10/12

101 to 200
8/10

201 to 300
6/10

OPERATION
Priming

The

Pump

Pressure should increase rapidly to 50 pounds per
square inch or more as ejector and pump prime. If
so, go to step 4, below.

I&WARNING ]Burn hazard.
NEVER run pump
dry.
Running
pump
without
water may cause pump
to overheat,
damaging
seal and possibly
causing
burns to persons
handling
pump. Fill pump with
water before
starting.

lf pressure does not build to 50PSI, repeat steps a,
b, and c under Step No.1 two or three times to remove entrapped
air from the suction pipes.

IAWARNING]Risk of explosion
and steam burns.
NEVER run pump with discharge
shut off, which
can boil water inside pump body. Steam in pump
may cause it to explode
and scald anyone
near.
NOTICE: Open water system
pump for the first time.
1.

Remove

pressure

a. Close regulator
]8A).
b. Fill pump
lSB).

faucets

before

and suction

priming

- see Figure

pipe with water

c. Replace pressure
gauge,
thread; tighten gauge.

using

Teflon

If pressure does not build up after priming
several times, check the following:

pump

a. Suction pipe in the water.
b. Suction pipe has no leaks.
NOTICE: Air can leak in even where water won't leak
out. Make sure all joints are tight.
c. Control valve, check valve, or foot valve installed
and operating correctly.
d. Pump trying to lift water more than rated lift for
deep well ejector used (including compensation
for horizontal offset).

gauge.
valve (turn clockwise

Start Pinup:

(Figure
tape on

e. Be sure pump is not airlocked. In offset installations, pump suction port should be highest
point in suction pipe; there should be no sags in
suction pipe (run it straight and at a slight angle
upward from well head to pump).

NOTICE: If a priming tee and plug have been installed
for a long horizontal
rim, be sure to fill suction pipe
through this tee and replace plug. (Don't forget to
teflon tape the plug.)

2360a 0697
1030a 0697

A - Close Regulator

Figure

Pump

18 - Priming

B - Fill Pump With

Water

C - Start

Pump i

D - Adjust

Regulator

OPERATION
4.

HELPFUL

Once unit has primed
and pressure
stabilized,
slowly open (turn counterclockwise
- Figure 19A,
regulator
valve until pressure
falters (pressure
gauge needle flutters; pump may become noisy- see
Figure 1913). At this point, close (turn clockwise)
regulator valve slightly until pressure stabilizes. This
setting provides maximum flow (Figure 19C).
Pump may draw well down far enough at this point
to lose its prime. If so, close regulator valve until
pressure is stable throughout pumping cycle. Close
faucets and allow pump to pressurize tank and shut
off.

How

HINTS

To Handle

/ MAINTENANCE

A Gaseous

Well

In some areas well water contains gases which must be
allowed to escape before the water is used. To deliver
gas-free water suspend a pipe, closed at the bottom and
open at the top, so that it surrounds
the suction pipe
inlet. (See Figure 20). Since the gases rise in the well
casing, the water sucked down through the pipe and
into the suction pump is free of gas. This type of weil
must be vented to the outside of any enclosure.

Air Control

Check system by alternately
opening and closing
faucets in the system. With faucets open, pressure
will drop until pump starts; with faucets closed,
pressure will build up until pump shuts off.
There are conditions
of deep well operation when
the regulator valve may be completely
open without any faltering of pressure. In this case, operate
pump with regulator valve open.

In Flowing Wells

Flowing wells or wells with little or no drawdown,
could create a special problem in air control in the operation of your standard tank system. In such cases, a
pre-charged
tank (which
needs no air control)
is
recommended.

Gases
rise to
surface

Figure

19A - Open Regulator

wire to hold
pipe sleeve

Valve

pipe
valve

sleeve
cap

Figure 19B - Watch for Pressure Gauge to Flutter

Figure 20 - Gas/Air

Figure

19C - Close Regulator
Pressure Stabilizes

Valve until

Control

in Well

MAINTENANCE
Using the Compound

Gauge

Pump Diassembly

If the pump or system seems to be operating
inefficiently, the compound
gauge can sometimes
help determine the problem.
A compound
gauge is a combination
vacuum and pressure gauge which will indicate (1) receding water level
in the well, (2) leakage in the suction line or in the
pump, or (3) clogged impeller.
To use, install the gauge in the air volume control (AVC)
port in the base of the pump. Open all shutoff valves
between pump and household
piping. Tighten regulator screw as far as possible. After running pump a few
minutes to eliminate all air from pipes, loosen regulator screw until compound
gauge shows 15" of vacuum.
This setting indicates that the pressure regulator is set
for delivery of the highest volume of water possible.
Let the pump run a few minutes; if the water level in
the well is falling, the vacuum
vdll increase. If necessary, reduce the regulator
setting to bring the vacuum
reading back to 15 ". If the pump does not develop 15"
of vacuum according the gauge, you may have air leaks
in the suction line or a clogged impeller.
Cleaning

the Deep

Well

Pull disconnect
switch.
from pressure switch.

Remove the two cap screws holding the pump to
the flange adapter. Don't disturb the piping in the
well.

Remove
surfaces

the flange
clean.

Disconnect

adapter

gasket

power

and scrape

lines

the

Leaving the tubing in place, unscrew and remove
the straight barbed fitting at the pressure switch.
Draw a line down the side of the pump with a
marker to help alignment during reassembly. Mark
the pump from the motor to the base volute (see
Figure 21).

Jet

Disconnect

power.

2.
3.
4.

Disconnect
piping and well seal or casing adapter.
Vc_tthdraw jet assembly from the well.
Unscrew and remove the venturi. Remove the nozzle with a socket wrench and clean.

Replace

all parts,

reprime,

Figure 21
6.

and turn on power.

Turn the pump upside down on the bench and
block it. Remove the four cap screws from the base.
With a mallet, tap upward on the base to loosen it.
Lift the base off of the intermediate
volute (see
Figure 22).

Figure 22
7.

To reduce the chance
your foot, lay it down
won't roll.

of dropping
the pump onto
on the bench; block it so it

MAINTENANCE
.

1 I. Remove the intermediate
volute
peller spacer off of the shaft.

Hold the motor shaft with pliers or vice grips
fllrough the opening in the pump adapter. Unscrew
the impeller nut off the end of the shaft (see Figure
23).

and slide the im-

12. Remove the impeller. Don't disturb the shaft keys ff
you arc only replacing the seal.
13. Rotate the seal spring retainer cup so that the slot
lines up with the shaft keys; remove the cup and
spring.
14. Remove the two cap screws holding the adapter
bracket to the motor.
15. With two screwdrivers
on opposite
sides of the
pump, carefully pry the pump adapter away from
the motor. This vdll pull the seal off of the motor
shaft. Use caution
to make sure that the ceramic
seal does not dig into the sbaft and scratch the
shaft's sealing surface.

Figure 23
9.

Installation

The impellers are keyed to the shaft and do not unscrew. Insert two screw drivers on opposite sides
under the exposed impeller and pry the impeller
off (Figure 24) to remove it.

Of New

Seal

Clean all gasket surfaces
thoroughly
before reassembly. Clean the seal bore cavity in the pump
adapter.

Wet the rubber seat ring with soapy water and push
the stationary part of the seal into the seal bore cavity. Use a piece of 1" pipe pressing on a cardboard
washer (to prevent
damaging
seal surface) as a
press. Make sure that the seal half is fully seated
in the seal bore cavity Remove the cardboard once
the seal is in place.
Make sure that the shaft keys are in place on the
shaft. If they are not, squeeze them in place now
with slip joint pliers. Do not tap tbem or bit them
with a hammer;
you could bend the shaft (see
Figure 26). When the keys are correctly installed, the
adapter will pass over the keys without interference.

Figure 24
10. Carefully tap a small screwdriver
chisel in between
the intermediate

or thin bladed
volute and the

pump adapter in two or three places around the
pump to separate the castings (Figure 25). Do not
mar the sealing surfaces; do not break pieces out
of the adapter or volute - the castings are easily
damaged.

!
Use pliers with care no hammers.

Figure 26
Figure 25
13

HAINTENANCE
,

Carefully
slide the adapter
over the shaft (see
Figure 27). Do not damage the shaft sealing surface;
it is highly polished and any slight scratches or nicks
will ruin it.

10. Make sure the second shaft key is in place and install the second impeller. Twist the impeller to
make sure that the shaft key is still in place. Hold
the motor shaft with slip-joint pliers or vice-grips
and install and tighten
the impeller
locknut.
Tightening the lock nut automatically spaces the impeller correctly. Do not overtighten.

Align
Marks_

11. Install the base volute gasket. Make sure thegasket
is rl_ht side up so that the waterpassage
holes line
up with the water passages
in the volutes. Install
the base volute, using the alignment
marks made
before disassembly.
Make sure that the pump discharge will correctly meet the the piping when the
pump is reinstalled.
12. Insert the four base capscrews
and tighten evenly
(see Figure 29). These should be easy to install ff everything
is correctly
aligned. If not, don't force
them," go hack over your work and find and correct the misalignment.

Figure 27
5.

Install the intermediate
volute, aligning it with the
mark made before disassembly.
Use the long cap
screws
to check this alignment.
It cannot
be
stressed too strongly that all bolt holes and water
passages
of all gaskets and volutes MUST line up
with each other, or the pump will not be assembled correctly.

Using the alignment marks made before disassembiT, line up the adapter with the motor and bolt the
adapter in place. Tighten the cap screws evenly.
Push the shaft seal and seal spring onto the shaft,
after making sure that the seal faces and shaft are
clean. Take care that the shaft shoulder does not
damage
the carbon
seal face. Follow the seal
spring with the spring holder; compress the spring
and give the spring holder a quarter turn to lock it
under the first shaft key (see Figure 28).

Bolts should
be easy to
insert.

Make sure
all marks
line up.

Figure 29
13. Reinstall the pressure
sure tube.

Figure 28

Slide the first impeller onto the shaft; follow it with
the impeller spacer. Twist the impeller on the shaft
to make sure that the shaft key is still in place and
the impeller is locked to the shaft (the shaft should
turn with the impeller).

Install a new volute gasket, lining up the bolt holes
with the bolt holes in the adapter. Make sure the gasket is right side up so that the waterpassage
holes
line up with the water passages in the volutes.

switch

barb fitting and pres-

14. Reinstall the pump on the adapter flange (use a new
gasket) and reconnect the wiring and grounding.
Pump is now ready for operation.

TROUBLESHOOTING
SYMPTOM

POSSIBLE CAUSE(S)

CHART
CORRECTIVE ACTION

Motor will not run

1.
2.
3.
4.

Disconnect switch is off
Fuse is blown
Starting switch is defective
Wires at motor are loose, disconnected, or wired incorrectly
5. Pressure switch contacts are dirty
6. Wrong voltage

1.
2.
3.
4.

Motor runs hot and
overload kicks off

1. Motor is wired incorrectly
2. Voltage is too low

1. Refer to instructions on wiring
2. Check with power company. Install heavier wiring if wire
size is too small. See wiring instructions.
3. See section below on too frequent cycling

3. Pump cycles too frequently
Motor runs but no
water is delivered

*(Note: Check
)rime before looking for other
causes. Unscrew
pressure gauge
and see if there is
water in priming
hole)

"1. Pump in a new installation did not
pick up prime through:
a. Improper priming
b. Air leaks
c. Leaking foot valve
*2. Pump has lost its prime through:
a. Air leaks
b. Water level below suction of
pump

Ejector or impeller is plugged
4. Check valve or foot valve is stuck
in closed position
5. Pipes are frozen
3.

6. Foot valve and/or strainer are
buried in sand or mud

Be sure switch is on
Replace fuse
Replace starting switch
Refer to instructions on wiring. Check and tighten all
wiring.
5. Clean by sliding piece of plain paper between contacts
6. Make sure motor voltage exactly matches power supply
voltage.

1. In new installation
a. Re-prime according to instructions
b. Check all connections on suction line, air volume control, and ejector
c. Replace foot valve
2,
In installation already in use:
a. Check all connections on suction line, air volume control, ejector 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 ejector or impeller; see Maintenance
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

Pump does not deliver water to full
capacity (Also
check point 3 immediately above)

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. Lower ejector in weir
2. Replace with plastic pipe where possible, otherwise with
new steel pipe

Pump pumps water
but does not shut
off

1. Pressure switch is out of adjustment or contacts are "frozen"
2. Faucets have been left open
3. Ejector or impeller is clogged
4. Water level in well is lower than estimated
5. Wrong voltage

1. Adjust or replace pressure switch

Pump cycles too
frequently

Air spurts from
faucets

Use larger offset piping

2. Close faucets
3. Clean ejector or impeller
4. Check possibility of using a deep well jet pump
5. Make sure motor voltage exactly matches power supply
voltage.

1. Standard pressure tank is waterlogged and has no air cushion
2. Pipes leak
3. Faucets or valves are open
4. Foot valve leaks
5. Pressure switch is out of adjustment
6. Air charge too low in Captive Air _
tank

1. Drain tank to air volume control tapping. Check air volume
control for defects. Check for air leaks at any connection.
2. Check connections
3. Close faucets or valves
4. Replace foot valve
5. Adjust or replace pressure switch
6,

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 the pressure switch cut-in
setting, pump air into tank from outside source until the air
pressure is the same as cut-in setting of switch. Check air
valve for leaks, using soapy solution, and replace core if
necessary.

1.
2.
3.
4.

As soon as pump picks up prime, all air will be ejected
Check suction piping
Change installation, see Maintenance
Lower foot valve if possible, otherwise restrict discharge
side of pump

Pump is picking up prime
Leak in suction side of pump
Well is gaseous
Intermittent overpumping of well

REPAIR PARTS

Multi-Stage
Jet Pump

2
3

-14C
--12

@--11

/_
17

18
I

1281 0994

Repair Parts List - Multi-Stage
Key
No.
1"*
2
3
4
5
6
7
8
9
10
11
12
13
14
14A
14B
14C
15
16
17
18

Part
Number
J218-600C
L43-5C
U36-112ZP
U217-1228
U37-672P
J212-24A
L2-16A
U30-75ZP
U65-15SS
U109-99
J24-11
J105-76P
J43-23
J101-26
J20-11
J23-10
J23-11
U36-175D
J101-33
U78-57CT

Jet

Part
Description
Motor
Connector
Locknut - 1/2"
Pressure Switch
Switch Tube - 14-1/2"
Pressure Regulator Assembly
Adapter
Capscrew - 3/8"-16x1-1/4" Lg. (2 Req.)
Shaft Key (2 Req.)
Seal - Shaft
Spring Holder
Impeller (2 Req.)
Spacer- Impeller
Intermediate Volute w/Wear Rings
Gasket (2 Req.)
Wear Ring (2 Req.)
Wear Ring
Impeller Nut
Base Volute w/Wear Ring
Pipe Plug - 1/4" NPT
Capscrew - 3/8"-16x4-1/4" Lg. (4 Req.)

• Standardhardware item; may be purchasedlocally.
*• Notmailable; specify freightor express.
For repair or service to motors, always give the Motor Model number and any other data found on the motor model plate.
This is a repair

parts list, not a packing

list. Please

order by part number

- not by key number.

REPAIR PARTS

Pressure
Regulator

Call Sears Product Service,
To Order Parts,
1-800.366-7278

Repair Parts List - Pressure Regulator
Key
No,
1
1A
1B
2
2A
2B
2C
2D
2E
2F
3
4
5
6
7
8
9
10

Part
Number
Jl12-14
U111-212T
J66-16
J220-16B
J42-5
J62-9
J20-16
J43-31
U43-23ZP
U36-36ZP
U78-107DT
U239-3
J24-13
J61-5
J52-9
U30-69FTZP
U36-205ZP

Part Description
Pressure Regulator Body w/Seat
Barbed Fitting - Elbow
Valve Seat
Diaphragm Assembly
Regulator Guide
Stem
Diaphragm
Spring Follower
Lock Washer
Nut 1/4-20
Reducer Bushing 1/2xl/8 NPT
Pressure Gauge 0-100_f
Spring
Spring Guide
Bonnet
Capscrew 5/16-18x3/4" Lg. (4 Req.)
Adjusting Screw 5/16-18x2"
Locknut 5/16-18

* Standard hardware item; may be purchased locally.
For repair or serviceto motors,always givethe Motor Model number and any other
data found on the motor model plate,
This is a repair parts list, not a packing
part number - not by key number,

list.

Please

order by

REPAIR

PARTS

Vertical Casing Adapters and Adapter Flanges
for Multi-Stage Jet Pump

To Order Parts,
Call Sears Product Service,
1-800-366-7278

!
6

489 0194

g_
O

Adapter

Flange

Casing

Adapter

Repair Parts List - Adapter Flange
Key
No.

Part
Number

1
2
3

J20-12
J2-17B

Part Description
Adapter Gasket
Adapter- 1-1/4"x1-1-1/4" NPT
1/2-13 x1-1/4" Long Capscrew (2 Req.)

* Standard Hardware Item, may be purchasedlocally.

Repair Parts List - Casing Adapters
Key
No.
1
2
3
4
5
6
7
8
9

J216-13
2"
U30-282ZP
J16-19ZZP
J21-19
J21-18
J51-1ZZP
U30-277ZP
J21-17
J16-2077p
U36-38ZP

J216-14
3"
U30-282ZP
J16-23ZZ
J21-19
J21-18
J51-3ZZ
U30-277ZP
J21-21
J 16-24ZZP
U36-38ZP

Part Description
3/8-16x5" Long Machine Bolt (2 Req.)
Upper Flange
Seal Ring - Drive Pipe
Seal Ring - Suction Pipe
Casing Adapter Body
3/8-16x2-1/2" Hex Hd. Bolt (3 Req.)
Seal Ring - Lower
Lower Flange
3/8" Hex Nut (3 Req.)

REPAIR PARTS
Jet Packages
4" Double Pipe Jets

2" and 3" Single Pipe Jets

Suction Pipe
Drive Pipe:

Adapter

ipple

Well

.Drop
Pipe

1 • PipeAdapter

"*--3

1361

1094

Repair Parts List - Jet Packages
13801 o94

Key
No.
t
1
2
3
4
5
6
7
8
9
10
11
12

2967
2" Single
Pipe Jets
J32P-24
J32P-18
J34P-42
J40-24
J57-1
J43-14P
Pt22-10B
J66-13
Ul1-1
J37-4

29902
3"Single
Pipe Jets

29660
4" Double
Pipe Jets

J32P-24
J32P-18
J34P-42
J40-25
J57-3
J43-16
J43-20C
J161-3
J66-14

J32P-24
J32P-18
J34P-42
N40-92

Venturi
Venturi
Nozzle

N212-12P

J37-4
L8-1P
U11-104P

J216-13
U37-116GP

Part
Description

J216-14
U37-116GP

Jet Body
Packer Leathers (2 Req)
Spacer
Washer
Check Valve
Valve Seat
Turned Coupling (11 included)
1" NPT Offset Nipple
Strainer
Plastic Pipe Adapter
Casing Adapter
1" x 6" T.O.E. Nipple

• Not illL strated.

Venturi Selection

Chart

Max, Depth with Jet Package No.

Pump
Model

390.2532

]£

2967

29902

29660

Venturi
Installed

2" Single
Pipe

3" Single
Pipe

4" Double
Pipe

J32P-24
J32P-18

90'
180'

100'
210'

OWNER'S
MANUAL

CRAFTSMAN+
MULTI-STAGE
JET PUMP

Model No.
390.2532
Forthe repair or replacementpartsyou need
Call 7 am - 7 pm, 7 daysa week

1-800-366-PART
(1-800-360-7278)

Forin-homemajorbrandrepair service
Call24 hoursa day,7 days a week

1-800-4-REPAIR
(1-800-473-7247)

The model number of
your Multi-Stage Jet
Pump will 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

Forthe location of a
SearsRepairService Centerin yourarea
Call24 hours a day,7 daysa week

1-800-488-1222

ForInformation on purchasingu Sears
MaintenanceAgreementor to inquire
aboutan existingAgreement
call 9 am - 5 pm, Monday-Saturday

1-800-827-6655

SEARS
America's Repair Specialists

Sears, Roebuck and Co., Hoffman Estates, IL 60179

U.S.A.

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Craftsman 3902532 User Manual PUMP Manuals And Guides L0502570

CRAFTSMAN Pump Manual L0502570 CRAFTSMAN Pump Owner's Manual, CRAFTSMAN Pump installation guides

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