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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Page Count: 20

SEARS

OWNER'S

MANUAL

MODEL NO.

390.2.532

CAUTION:

Read and Follow

All Safety Rulesand

Operating Instructions

BeforeFirstUse of

ThisProduct.

Save ThisManual For

FutureReference.

I:RRFTIMRN °

MULTI-STAGE JET PUMP

•Safety Instructions

• Installation

• Electrical

• Operation

• Maintenance

• Repair Parts

Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.

PRINTED IN U.S.A. Form No. F642-040T7 (8/6/04)

CONTENTS

INTRODUCTION/WARRANTY .................................. 2

MAJOR COMPONENTS .............................................. 3

PUMP PERFORMANCE ............................................... 4

INSTALLATION ........................................................ 4-8

ELECTRICAL ............................................................ 8-9

OPERATION ........................................................ 10-11

HELPFUL HINTS /MAINTENANCE ..................... 11-14

TROUBLESHOOTING GUIDE .................................. 15

REPAIR PARTS ..................................................... 16-19

INTRODUCTION

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 con-

trol which are not covered by our warranty.

RULES FOR SAFE INSTALLATION AND OPERATION

Carefully read and follow all safety instructions in this

manual or on pump

This is the safety alert symbol. When you see this

symbol on your pump or in this manual, look for

one of the following signal words and be alert to the

potential for personal injury!

Warns about hazards that will cause seri-

ous personal injury, death or major property damage if

ignored.

[AWARNING] Warns about hazards that will or can

cause serious personal injury, death or major property

damage if ignored.

[_ CAUTION ] Warns about hazards that will or can cause

minor personal injury or property damage if ignored.

The word NOTICE indicates special instructions

which are important but not related to hazards.

1. To avoid risk of serious bodily injury and property

damage, read safety instructions carefully before in-

stalling pump.

2. Follow local and/or national plumbing and electri-

cal codes when installing pump.

3. Keep well covered while installing pump to prevent

leaves and other debris from falling into well, con-

taminating well and possibly damaging pump.

4. Protect pump and piping system from freezing.

Allowing pump or water system to freeze could

severely damage pump and voids warranty.

[AWARNING] To avoid serious injury and equip-

ment damage, limit system pressure to 100

pounds per square inch (PSI) or below at all

times. Over-pressure can cause tank blowup; in-

stall relief valve capable of passing full pump vol-

ume at 100 PSI.

5. With a new well, test well for purity before use.

Consult local Health Department for procedure.

[AWARNING_Hazardous voltage. Can shock, burn,

cause death, or start fires.

6. Disconnect electrical power source before in-

stalling or working on pump.

7. Ground pump with a ground wire nan from ground-

ing lug on motor to a grounded lead in the service

panel.

8. Line voltage and frequency of electrical power sup-

ply must agree with motor nameplate.

9. Use of fuses or wire smaller than size recommended

in owner's manual can cause overheating, possible

fires, and will void warranty.

10. This pump is a deep well jet pump. It is not de-

signed or intended for shallow well use. Use in a

deep well (more than 25' depth to water).

MAJOR COMPONENTS AND WHAT THEY DO

Tank and Air Volume Control

The tank serves two functions:

1. 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).

2. 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 in-

stallation 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 mo-

tion 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 im-

pellers; 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 sin-

gle stage jet pumps.

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 Regulator

The pressure regulator is adjusted at installation to di-

vert the correct amount of water back to the jet for the

most efficient operation. Under certain conditions, the

pressure regulator may require adjustment during the

pump's life (see Page 10) to restore or maintain the

pump's efficiency.

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.

Adapter Flange

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 7for

more information.

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 pres-

sure. 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 in-

formation.

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 connec-

tions 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 con-

nect the pump to the well head.

Piping

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 'dou-

ble pipe' system for a 4 _ or larger well. See Pages 6 and

7for details. Follow instructions packed with jet pack-

age 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 _ cou-

pling 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

Pump Performance (in gallons per minute)

Pump Jet Discharge

Stock Pkg. Pressure Pumping Depth In Feet

No. No. P.S,I, 40 60 70 80 90 100 110 120 140 160 180 210

2967* 40 11.3 10,0 8.8 7,6 6,5 5,0 5,0 5,0 4.2 3,5 2.0

60 10.6 8.6 7.5 6.5 5.5 4,8 4.8 4.7 3.9 2.7 1.5

390.2532 29902**t 40 11.7 11.1 10.2 9.2 7.8 6,4 5.1 5.0 4.5 4.0 3.2 2.1

1 HP 60 11.0 9.5 8.6 7.8 6.6 5.4 4.7 4.6 4,2 3.4 2.6 1.7

29660*** 40 11.7 11.1 10.2 9.2 7.8 6.4 5,1 5.0 4.5 4,0 3.2 2.1

60 11.O 9.5 8.6 7.8 6.6 5.4 4.7 4.6 4.2 3,4 2,6 1.7

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

Use New Pipe for Best Results.

Clean FJow!

1096 0697

From

Well

Figure I - No Dirt or Scale in Suction Pipe

PipeJoint

NoAir Leaks _ Compound Will

in Suction Pipe. _amage Plastic.

If Air Flows

Water Won't

Use TeflonTape.

Figure 4 - Suction Pipe Must Not Leak

1102 0697

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 re-

duce flow. Locate pump as close to well as possible:

use as few elbows and fittings as possible.

2. Be sure well is clear of sand. Sand will plug the

pump and void the warranty.

3. 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).

4. Be sure all pipes and foot valve are clean and in

good shape.

5. No air pockets in suction pipe.

6. No leaks in suction pipe. Use Teflon tape or Plasto-

Joint stik to seal pipe joints.

7. Match pump to well.

IMPORTANT: Flow into well must at least equal

flow out through pump!

8. Unions installed near pump and well will aid in ser-

vicing. Leave room to use wrenches.

I_, CAUTION]Motor normally operates at high temper-

ature and will be too hot to touch. It is protected from

heat damage during operation by an automatic internal

cutoff switch. Before handling pump or motor, stop

motor and allow it to cool for 20 minutes.

Piping In The Deep Well

See Figures 6, 7, and 8.

NOTICE: Deep well instaUations are either single pipe

(2" wells) or double pipe (4" and larger wells). In a dou-

ble 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).

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.

1. Inspect ejector to make sure that nozzle and ven-

turi openings are clean and clear.

2. Inspect pipe for any foreign matter or obstructions.

NOTICE: Make sure that no foreign matter enters pipe

openings while installing pump.

3. Make sure foot valve operates freely: attach to ejec-

tor 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 8below).

Pnming

Tee and Gasket

Piug

)e Nipple

_Coppling

Adapter.(SuPplied with Ejector)

Ipe Adapter

heckValve

trainer

Figure 6 - Offset Installation

Plastic Pipe Shown

Gasket

1461 O_g5

Figure 7 - Over the Well Installation

Steel Pipe Shown

Suction: 1-1/4"

Ddve: Pipe or Plastic

1-1/4" Pipe Pipe Adapter

or Plastic J

Pipe

1-1/4"

1-1/4x1"

Face

1' Ni

1386 1194

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).

7. 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.

9. 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 and

pump base so that pump discharge will be aligned with

piping.

10. Install 1" nipple in one side of adapter flange. Slide

threadless coupling down over drive pipe from

well. Thread adapter flange onto suction pipe from

well and align nipple and drive pipe.

11. Slide threadless coupling up and secure nipple to

drive pipe.

Pump

mounted

on Casing

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 regard-

hag correct discharge pipe size.

Steel 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 low-

ered into the well, fill it with water. This will help

prime the system and also serves as a check on leaks

Lever Hoist

Pipe Clamp -

Figure 9

serves as

Drive Pipe

Pipe

Leathers

Waterlevel

with pump

riiing

1Oto20 Feet

5 Feet

or mere

Pipe Clamp _ _ll_-L

Figure I 0A - Use tripod and lever hoist to lower

pipe into the well

i ,

Figure I 0B - Pipe clamp detail

INSTALLATION

which may occur in the piping and foot valve as the

piping is assembled.

Single Pipe Ejector Installation

Single pipe installations require (see Figure 9):

a. Galvanized steel suction pipe.

b. Leather packer-type ejector with built-in foot

valve.

c. Turned couplings (supplied with packer-type

ejector).

d. Well casing adapter (supplied with packer-type

ejector).

Connect ejector to first length of pipe. Use pipe

joint compound sparingly on male threads.

Lower pipe into casing. Use special turned cou-

plings (included with single pipe ejector package)

to increase water flow. Use pipe joint compound

sparingly on male couplings threads.

Horizontal Offset Pipe Sizes

When the pump is set more than 25' to one side of the

well, increase the horizontal pipe size to reduce fric-

tion. Never use pipe smaller than the pump port size.

Pump Up to 25' 25' to 100' 100' to 300'

Model Suct. Drive Suct. Drive Suct. Drive

390,2532 1-1/4" %1/4" 1-1/2" 1-1/4" 2" 2"

NOTICE: Fill pipe with water as each length is added

to be sure foot valve and connections do not leak.

3. 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. With ejector set, install well casing adapter. Remove

pipe holder. Align locating lugs and tighten adapter

to form seal with well casing.

Discharge Pipe Sizes

1. If increasing discharge pipe size, install reducer in

pump discharge port. Do not increase pipe size by

stages.

2. 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"

• 300 ft. to 600 ft rim: 1-1/2".

Pressure Tank Installation - Deep Well

The Pressure Tank provides a reservoir of water under

pressure and maintains cushion of air pressure to pre-

vent pipe hammering and possible damage to plumb-

ing components. When water is drawn off through

house fixtures, the pressure in the tank is lowered and

the pressure switch starts the pump.

Standard Tank Connection

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.

Air Volume Control TANK

Sears Stock No. 2761 \

Pump to Tank Piping

1" Discharge

Relief Varvs Sears i

Stock No. 2729 _._

Air Volume Control Tubing!Fitting _

Sears Stock No. 27881

Well Seal

To Service

_Regulator

j AVC Fitting

_,55 b_97t_

Figure I I - Pump With Standard Tank

PRESSURE TANK CONNECTION ELECTRICAL

Precharged Tank Connection

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.

Disconnect power before working on

pump, motor, pressure switch, or wiring.

Motor Switch 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: Never wire a 115 volt motor to a 230 volt

line.

Remove Motor End Cover

Pressure

Regulator

Piping Tee and

1" Discharge

To Service 2358b0697nc !Relief Valve

Figure 12 - Pump With Captive-Air* Tank

Check Pressure with

Tire Gauge

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 con-

nection still needs to be made, the pressure switch

cover will need to be removed.

Your motor terminal board (located under the motor

end cover) should look like one of those below.

Plug Type Voltage Selector

10_ 0_97n¢

Figure 13 - Checking Tank Pre-charge

Ground Wire ConnsctJon Pressure Sw=tch

Figure 15 - Voltage Set To 230 Volts, Plug Type

ELECTRICAL

To change to I 15 volts:

1. Make sure power is off.

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

5. Go to Wiring Connections below.

Dial Type Voltage Selector

Connections

Figure 16 - Voltage Set To 230 Volts, Dial Type

ranty. 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 volt-

age motors.

Install, ground, wire, and maintain your pump in com-

pliance 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 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.

prevent strain

on the terminal screws.

-Connect the green (or bare copper) ground wire

to the green ground screw. 31870398

Figure 17 - Pressure Switch Wiring

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 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 cir-

cuit with no other appliances on it.

IAwARNING] Explosion hazard. Do not ground to

agas supply fine.

Wiring Connections

Fire hazard. Incorrect voltage can cause

afire or seriously damage the motor and voids the war-

Connection Procedure

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 ser-

vice 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 to the pressure

switch as shown in Figure 17.

WIRING CHART - Recommended Wire and Fuse Sizes

MOTOR MAX. LOAD

lip VOLTS AMPS

1115/230 19.2/9.6

BRANCH FUSE* I DISTANCE IN FEET FROM MOTOR TO METER

RATING (AMPS) 0 to 50 51 to 100 101 to 200 201 to 300

25/15 10/14 10/12 8/10 6/10

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

OPERATION

Priming The Pump

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.

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 faucets before priming

pump for the first time.

1. Remove pressure gauge.

a. Close regulator valve (turn clockwise - see Figure

]8A).

b. Fill pump and suction pipe with water (Figure

lSB).

c. Replace pressure gauge, using Teflon tape on

thread; tighten gauge.

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.)

2. Start Pinup:

Pressure should increase rapidly to 50 pounds per

square inch or more as ejector and pump prime. If

so, go to step 4, below.

lf pressure does not build to 50PSI, repeat steps a,

b, and c under Step No.1 two or three times to re-

move entrapped air from the suction pipes.

3. If pressure does not build up after priming pump

several times, check the following:

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).

e. Be sure pump is not airlocked. In offset install-

ations, 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).

A - Close Regulator I

2360a 0697

B - Fill Pump With Water l_ C - Start Pump i

Figure 18 - Priming Pump

1030a 0697

D - Adjust Regulator

OPERATION

4. 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).

5. 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.

6. 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.

7. There are conditions of deep well operation when

the regulator valve may be completely open with-

out any faltering of pressure. In this case, operate

pump with regulator valve open.

Figure 19A - Open Regulator Valve

Figure 19B- Watch for Pressure Gauge to Flutter

HELPFUL HINTS /MAINTENANCE

How To Handle 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 In Flowing Wells

Flowing wells or wells with little or no drawdown,

could create a special problem in air control in the op-

eration of your standard tank system. In such cases, a

pre-charged tank (which needs no air control) is

recommended.

Gases

rise to

surface

wire to hold

pipe sleeve

pipe

valve

sleeve

cap

Figure 19C - Close Regulator Valve until

Pressure Stabilizes

Figure 20 - Gas/Air Control in Well

MAINTENANCE

Using the Compound Gauge

If the pump or system seems to be operating ineffi-

ciently, the compound gauge can sometimes help de-

termine the problem.

A compound gauge is a combination vacuum and pres-

sure 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 regula-

tor screw as far as possible. After running pump a few

minutes to eliminate all air from pipes, loosen regula-

tor 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 neces-

sary, 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 Jet

1. Disconnect power.

2. Disconnect piping and well seal or casing adapter.

3. Vc_tthdraw jet assembly from the well.

4. Unscrew and remove the venturi. Remove the noz-

zle with a socket wrench and clean.

5. Replace all parts, reprime, and turn on power.

Pump Diassembly

1. Pull disconnect switch. Disconnect power lines

from pressure switch.

2. Remove the two cap screws holding the pump to

the flange adapter. Don't disturb the piping in the

well.

3. Remove the flange adapter gasket and scrape the

surfaces clean.

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).

Figure 21

6. 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 of dropping the pump onto

your foot, lay it down on the bench; block it so it

won't roll.

MAINTENANCE

.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).

Figure 23

9. The impellers are keyed to the shaft and do not un-

screw. Insert two screw drivers on opposite sides

under the exposed impeller and pry the impeller

off (Figure 24) to remove it.

1 I. Remove the intermediate volute and slide the im-

peller spacer off of the shaft.

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.

Installation Of New Seal

1. Clean all gasket surfaces thoroughly before re-

assembly. Clean the seal bore cavity in the pump

adapter.

2. Wet the rubber seat ring with soapy water and push

the stationary part of the seal into the seal bore cav-

ity. 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.

3. 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 or thin bladed

chisel in between the intermediate 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 25

Figure 26

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.

Align

Marks_

Figure 27

5. Using the alignment marks made before disassem-

biT, line up the adapter with the motor and bolt the

adapter in place. Tighten the cap screws evenly.

6. 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).

9. 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 assem-

bled correctly.

10. Make sure the second shaft key is in place and in-

stall 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 im-

peller correctly. Do not overtighten.

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 dis-

charge 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 ev-

erything is correctly aligned. If not, don't force

them," go hack over your work and find and cor-

rect the misalignment.

Bolts should

be easy to

insert.

Make sure

all marks

line up.

Figure 28

7. 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).

8. Install a new volute gasket, lining up the bolt holes

with the bolt holes in the adapter. Make sure the gas-

ket is right side up so that the waterpassage holes

line up with the water passages in the volutes.

Figure 29

13. Reinstall the pressure switch barb fitting and pres-

sure tube.

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 CHART

SYMPTOM

Motor will not run

POSSIBLE CAUSE(S) CORRECTIVE ACTION

1. Disconnect switch is off

2. Fuse is blown

3. Starting switch is defective

4. Wires at motor are loose, discon-

nected, or wired incorrectly

5. Pressure switch contacts are dirty

6. Wrong voltage

1. Be sure switch is on

2. Replace fuse

3. Replace starting switch

4. 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.

Motor runs hot and 1. Motor is wired incorrectly 1. Refer to instructions on wiring

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. Pump cycles too frequently 3. See section below on too frequent cycling

Motor runs but no 1.

water is delivered

*(Note: Check

)rime before look-

ing for other

causes. Unscrew

pressure gauge

and see if there is

water in priming

hole)

Pump does not de-

liver water to full

capacity (Also

check point 3 im-

mediately above)

"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

Pump pumps water

but does not shut

off

Pump cycles too

frequently

Ejector or impeller is plugged

Check valve or foot valve is stuck

in closed position

Pipes are frozen

Foot valve and/or strainer are

buried in sand or mud

1. Water level in well is lower than es-

timated

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 adjust-

ment or contacts are "frozen"

2. Faucets have been left open

3. Ejector or impeller is clogged

4. Water level in well is lower than es-

timated

5. Wrong voltage

1. Standard pressure tank is water-

logged and has no air cushion

2. Pipes leak

3. Faucets or valves are open

4. Foot valve leaks

5. Pressure switch is out of adjust-

ment

6. 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 overpumping of well

In new installation

a. Re-prime according to instructions

b. Check all connections on suction line, air volume con-

trol, and ejector

c. Replace foot valve

In installation already in use:

a. Check all connections on suction line, air volume con-

trol, 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.

Clean ejector or impeller; see Maintenance

Replace check valve or foot valve

Thaw pipes. Bury pipes below frost line. Heat pit or pump

house.

Raise foot valve and/or strainer above well bottom

Air spurts from

faucets

1. Lower ejector in weir

2. Replace with plastic pipe where possible, otherwise with

new steel pipe

Use larger offset piping

Adjust or replace pressure switch

Close faucets

Clean ejector or impeller

Check possibility of using a deep well jet pump

Make sure motor voltage exactly matches power supply

voltage.

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 lo-

cated 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. As soon as pump picks up prime, all air will be ejected

2. Check suction piping

3. Change installation, see Maintenance

4. Lower foot valve if possible, otherwise restrict discharge

side of pump

REPAIR PARTS

@--11 /_

--14C

--12

1281 0994

Repair Parts List - Multi-Stage Jet

Key Part Part

No. Number Description

Multi-Stage

Jet Pump

1"* J218-600C

2 L43-5C

3 U36-112ZP

4U217-1228

5 U37-672P

6 J212-24A

7 L2-16A

8 U30-75ZP

9 U65-15SS

10 U109-99

11 J24-11

12 J105-76P

13 J43-23

14 J101-26

14A J20-11

14B J23-10

14C J23-11

15 U36-175D

16 J101-33

17 U78-57CT

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 freightorexpress.

For repair or service to motors, always give the Motor Model number and any other data found on the motor modelplate.

This is a repair parts list, not a packing list. Please order by part number - not by key number.

REPAIR PARTS

Pressure

Regulator

ITo Order Parts, I

Call Sears Product Service,

1-800.366-7278

Repair Parts List -Pressure Regulator

Key Part

No, Number

1 Jl12-14

1A U111-212T

1B J66-16

2 J220-16B

2A J42-5

2B J62-9

2C J20-16

2D J43-31

2E U43-23ZP

2F U36-36ZP

3 U78-107DT

4 U239-3

5 J24-13

6 J61-5

7 J52-9

9 U30-69FTZP

10 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 Modelnumber 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,

ToOrder Parts,

Call Sears Product Service,

1-800-366-7278

REPAIR PARTS

Vertical Casing Adapters and Adapter Flanges

for Multi-Stage Jet Pump

489 0194

Adapter Flange

_ 9

Casing Adapter

Repair Parts List -Adapter Flange

Key Part

No. Number Part Description

1 J20-12 Adapter Gasket

2 J2-17B Adapter- 1-1/4"x1-1-1/4" NPT

3 1/2-13 x1-1/4" Long Capscrew (2 Req.)

* Standard Hardware Item, may be purchasedlocally.

Repair Parts List - Casing Adapters

J216-13 J216-14

2" 3"

Key

No.

U30-282ZP

J16-19ZZP

J21-19

J21-18

J51-1ZZP

U30-277ZP

J21-17

J16-2077p

U36-38ZP

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.)

2" and 3" Single Pipe Jets

"*--3

Well

.Drop

Pipe

13801 o94

REPAIR PARTS

4" Double Pipe Jets

Suction Pipe

Drive Pipe:

Jet Packages

Adapter ipple

1• Pipe-

Adapter

1361 1094

Key

No.

•Not illL

Repair Parts List - Jet Packages

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

J216-13

U37-116GP

strated.

29902

3"Single

Pipe Jets

J32P-24

J32P-18

J34P-42

J40-25

J57-3

J43-16

J43-20C

J161-3

J66-14

J37-4

J216-14

U37-116GP

29660

4" Double

Pipe Jets

J32P-24

J32P-18

J34P-42

N40-92

N212-12P

L8-1P

U11-104P

Part

Description

Venturi

Nozzle

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

Pump

Model

390.2532

Venturi Selection Chart

Max, Depth with Jet Package No.

2967 29902 29660

Venturi 2" Single 3" Single 4" Double

HP Installed Pipe Pipe Pipe

1 J32P-24 90' 100' 100'

J32P-18 180' 210' 210'

]£

OWNER'S

MANUAL

Model No.

390.2532

The model number of

your Multi-Stage Jet

Pumpwill be found on

the pump body.

When requesting service

or ordering parts, always

give the following

information:

• ProductType

*Model Number

• Part Number

• Part Description

CRAFTSMAN+

MULTI-STAGE

JET PUMP

Forthe repairorreplacementpartsyouneed

Call 7am -7 pm, 7daysaweek

1-800-366-PART

(1-800-360-7278)

Forin-homemajorbrandrepairservice

Call24 hoursa day,7daysa week

1-800-4-REPAIR

(1-800-473-7247)

Forthe location of a

SearsRepairServiceCenterin yourarea

Call24 hours a day,7 daysaweek

1-800-488-1222

ForInformation onpurchasingu 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.

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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