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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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.
.
5.
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
pe
Adapter.(SuPplied with Ejector)
Ipe Adapter
heckValve
trainer
Figure 6 - Offset Installation
Plastic Pipe Shown
Gasket
pe
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
5
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.
1.
2.
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
7
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
8
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
10
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
11
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.
,
5.
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.
12
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
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.
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.
14
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
3.
4.
5.
6.
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
2,
3,
4.
5.
6.
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
3,
1.
2.
3.
4.
5.
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
15
REPAIR PARTS
23
4
@--11 /_
17
I
--14C
--12
18
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
18
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
7
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
8
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,
]7
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
!
6
Adapter Flange
_ 9
g_
O
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.
1
2
3
4
5
6
7
8
9
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.)
18
2" and 3" Single Pipe Jets
@
"*--3
Well
.Drop
Pipe
13801 o94
REPAIR PARTS
12
4" Double Pipe Jets
Suction Pipe
Drive Pipe:
Jet Packages
Adapter ipple
1• Pipe-
Adapter
1361 1094
Key
No.
t
1
2
3
4
5
6
7
8
9
10
11
12
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
m
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
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
A
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.

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