Craftsman 390.253250 Owner`s manual

MODELNO.
390.253250
CAUTION:
Read and Follow
All Safety Rules and
Operating Ins_rucfians
Before FirstUse of
This Product.
ULTra-STAGEJET PU
P
• Safety Instructions
. Installation
. Electrical
Save This Manual For
Future Reference.
• Operation
. Maintenance
. Repair Parts
Sears, Roebuck and Co., Hoffman
PRINTED
IN
U.S.A.
Estates, IL 60179
U.S.A.
Form No.
F642-9S02
(Rev. 6/20/97)
CONTENTS
INTRODUCTION/WARRANTY
UNTRODUCTION
..................................
2
MAJOR COMPONENTS ..............................................
PUMP PERFORMANCE ...............................................
INSTALLATION ........................................................
3
4
5-8
ELECTRICAL ..........................................................
OPERATION ........................................................
9-10
10-11
HELPFUL HINTS / MAINTENANCE
11-14
TROUBLESHOOTING
.....................
GUIDE ..................................
15
REPAIR PARTS .....................................................
FULL
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.
16-19
ONE YE&R W&R_NTY
ON
PUMPS
For one year from the date of purchase, Searswill repair or replace this pump free of charge, if defective in material or workmanship,
This warranty does not cover repairs or replacement parts necessary because of abuse, negligence including failure to install,
adjust and operate this pump according to the instructions in the owners manual.
LIMITATION OF LIABILITY
SEARS WILLNOT BE LIABLEFOR LOSS OR DAMAGE TO PROPERTY ORANY INCIDENTALOR CONSEQUENTIALLOSS
OR EXPENSE FROM PROPERTY DAMAGE DUE DIRECTLY OR INDIRECTLY FROM THE USE OF THISPRODUCT.
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you,
WARRANTY sERvIcE IS AVAILABLE BY SIMPLY CONTACTING THE NEAREST SEARS SERVICE CENTER!DEPART.
MENT IN THE UNITEDSTATES ofAMERICA, Forservice outside the U.S.A. contact your local SearsService Center or store.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
Sea_, Koebuck and Co., Dept. 817 WA, Hoffman
P,ULES FOP, 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!
Est.ates, mL60|79
AND
OPEPJ ,THON
4. Protect pump and piping system from freezing.
Allowing pump or water system to freeze could
severely damage pump and voids warranty.
_k
Warns about hazards
ous personal
ignored.
injury, death or major property
[&WARNING] Warns
cause serious personal
damage if ignored.
[& CAUTION] Warns
cause minor
nored.
that will cause
personal
The word NOTICE
which are important
about
hazards
that will
seri-
damage
ff
or can
injury, death or major property
about
injury
hazards
that will
or property
or can
damage
ff ig-
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.
[&WARNINGJ TO avoid serious
injux T 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
cause death, or start
voltage.
fires.
6. Disconnect
electrical
power
stalling or working on pump.
Can
shock,
source
burn,
before
in-
7. Ground pump with a ground wire run from grounding lug on motor to a grounded lead in the service
panel.
8. Line voltage and frequency of electrical power supply must agree with motor nameplate.
9. Use of fuses or wire smaller than size recommended
in owner's manual can cause overheating,
possible
fires, and will void warranty.
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
Tank
and Air Volume
COMPONENTS
Control
The tank serves two tractions:
1.
2.
It provides a reservoir of water. Some of this water
is drawn offwhenever
a house fixture 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 SEARS 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 pulls in
more water.
The Vertical Multi-Stage (VMS) pump has two or three
("multiple")
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.
Jet
The jet is a nozzle/venturi
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
vert the correct amount
most efficient operation.
pressure regulator may
pump's life (see Page
pump's efficiency.
Pressure
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
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.
AND
Adapter
WHAT
THEY
DO
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 7 for
more information.
Pressure ReliefValve
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. 27229) set
to open at 75 PSI. between
the pump and the tank.
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 four 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
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,
390.253250
1HP
Pump
(in gallons per minute)
Jet
Pkg.
No.
Discharge
Pressure
P.S.I.
40
60
70
80
Pumping Depth In Feet
90
100
110
120
140
160
180
29670*
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
11.0
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
Use 160 PSI Min. Rating Plastic Pipe.
* Jet Package No. 29670- 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.
1" Must be ordered through Sears Product Service, 1-800-366-7278.
4
210
RNSTALLATION
Do not use on shallow wells!
(25 feet or less in depth)
T
Deep well is more
than 25' (7.6M)
Use New Pipe for Best Results.
to water
with
pump running.
Body _
Clean Flow!
Casing
1096
0697
From
Well
Figure
I = No Dirt
or Scale in Suction
Pipe
Foot
Valve &
Strainer
Figure
1100
Figure
2 = Foot Valve Must Work
0697
2.
Freely
4.
Form, Water Won't Flow.
5.
6.
Keep Pipe Straight and Angled up to Pump.
7.
Figure
3 - No Air Pockets in Suction
No Air Leaks
in Suction Pipe.
Pipe
8.
Pipe Joint
Compound Will
Plastic.
If Air Flows
Water Won't
Use Teflon Tape.
Figure
4 = Suction Pipe Must Not Leak
5 = Use Pump On Deep Well
Only
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.
3.
If Air Pockets
822b 0697
1102 0697
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.
No leaks in suction pipe. Use Teflon tape or PlastoJoint Stik to seal pipe joints.
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.
[ak CAOTION] 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.
DEEP WELL
INSTALLATION
Pum
Priming
Tee and
FOP, DOUBLE
--
Pump
I
Gasket
Gasket
__
Plig
PIPE
Adapter
Flange
Drive:
1-1/4" Pipe
ipling
, Threadlesseoupling[_
___-L
-I_;1_
j
Suction: 1-1/4"
Pipe or Plastic
Pipe Adapter
Pipe Nipple
_
_
Sae_it_al
Drive Pipe
--
1-1/4" Plastic
Adapter.
--
1" Plastic
Suction
orPipe
Plastic
Ada
l
1-1/4"
Cou
Pipe
1-1/4" Plastic Pipe
(Supplied with Ejector)
1-1/4x1"
Face
Bushing
Pipe Adapter
--
EjectorAssembly
--
Check Valve
1" Nipple
1386 1194
1-'_E 1 0St5ainer
Figure
6 - Offset installation
Plastic Pipe Shown
Piping
in The
Deep
Figure
7 = Over the Well Bnstallation
Steel Pipe Shown
Well
See Figures 6, 7, and 8.
NOTICE: Deep well installations 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).
Plastic pipe is ideal for double pipe installations.
Due
to its light weight, it is easy to handle and does not usually require a block and tackle for installation
and removal.
Double
Pipe Rnstallation- Plastic
1.
2.
Inspect ejector to make sure that nozzle and venturi openings are clean and clear.
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 ejector with a close nipple. Use Teflon tape on male
threads.
4.
Install nozzle
5.
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, above).
Thread a 1" plastic pipe adapter or a 1" nipple into
6.
and venturi
in deep well ejector.
8 - Jet Assembly With
I" and i - 114" Drive
Pipes
the 1" tapped hole in ejector body (see Figure 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.
,
Pipe
NOTICE: Use Teflon tape on all male threads on plastic pipe and fittings to prevent air leaks in suction piphag.
Figure
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 maize 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.
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.
DEEP WELL
iNSTALLATiON
FOR SINGLE
PIPE
Pump
mounted
on Casing
Adapter x.
Offset Nipple ''_
Pipe Clamp
Well Casim
Water
level
Pipe Clamp
with pump
Drive Pipe
Pipe
L
Venturi
ing
Figure I OA - Use tripod
pipe into the well
10 to 20 Feet
and lever hoist to lower
Nozzle_
Ejector------_
'_----q"
Cup
Leathers
e
5 Feet
or more
_1
Figure
9
Figure
14. See "Discharge Pipe Sizes" for information
ing correct discharge pipe size.
Steel
!
• .....
b. Leather
valve.
Piping
The special
ing.
adapter
nipple
Single Pipe Ejector
Single pipe installations
Installation
require
(see Figure 9):
steel suction
packer-type
c. Turned couplings
ejector).
is not used with steel pip-
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
which may occur in the piping and foot valve as the
piping is assembled.
i0B - Pipe clamp detail
a. Galvanized
regard-
i
1.
2.
pipe.
ejector
with
built-in
foot
(supplied
with
packer-type
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 couplings (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 friction. 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
390.253250
1-1/4"
1-1/4"
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.
PRESSURE
TANK
CONNECTmON
@
Air Volume Control
Sears Stock No. 2761
TANK
To Service
I
Pump to Tank Piping
1" Discharge Relief Valve Sears
Stock No. 27229
"_
Pressure
1/_
Regulat°r
Pressure
Regulator
Piping Tee and
1" Discharge
Air Volume Control Tubing/Fitting"
Sears Stock No. 27881
/
We!l Seal
2355b 0697nc
Figure
3.
I I = Pump With
Standard
Tank
To Service
Figure
2358b0697nc
12 = Pump With
Add lengths of pipe until the ejector reaches the
proper depth. (Your well driller should supply this
information.)
5.
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.
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
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 ft run: 1"
• 100 ft. to 300 ft run: 1-1/4"
Pressure
Tank
Installation
- Deep
Well
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.
Tank
Tank
1054
Figure
13 = Checking
Tank
0697n¢
Tank Pre-charge
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.
Precharged
• 300 ft. to 600 ft rtm: 1-1/2".
Captive-Air*
Captive-Air_
Standard
1.
Relief Valve
Check Pressure with
Tire Gauge
NOTICE: As a guide, the ejector should be set at least
10 to 20 feet below the lowest water level with pump
rtmning, if possible, but always at least 5 feet above the
bottom of the well (see Figure 9, Page 7).
4.
_'
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 40-60
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.
ELECTRmCAL
WARNING
Hazardous voltage.
Can shock, burn, or cause
death.
Groundpumpbefore
connectingto powersupply.
AGround
motor before
connecting
to electrical power
supply. Failure to ground
motor
can cause severe or fatal electrical
shock hazard.
A
To avoid dangerous
or fatal electrical
shock,
turn OFF power to motor before working
on
electrical
connections.
A
Supply
voltage
must be within
+10% of
nameplate
voltage. Use wire size specified
in
Wiring CharL If possible,
connect
pump to a separate branch
circuR wRh no other appliances
on
it. Incorwect
voltage
can cause fire or seriously
damage
motor
and voids warranty.
If in doubt
consult a licensed
electrician.
I AWARNING I Disconnect power at service panel
before connecting pressure switch.
Clamp
power
cable to
prevent
strain on
] terminal
_screws.
Motor wires
are connected
to these two
screws.
To convert from
230 to 115 Volts:
Move white wire
w/black tracer
from B to A.
Move black wire
from A to L1.
Wiring (Fig. 14)
1. Install, ground, wire and maintain pump in accordance with your local electrical code and all other
codes/ordinances
that apply. Consult your local
building inspector for local code information.
2. Ground pump permanently
using wire of size and
type specified by approved local or national codes.
")
copper,
orounO
w,re
!iii1
to green ground screw.
Connect
black and white
these
power two
supply
screws,
wires one
to
wire to each screw.
It doesn't matter which
wire goes to which screw.
Y
i_
Risk of explosion.
Do not ground to gas
supply line.
3. Connect ground wire first. Connect to ground first,
then to green grounding terminal provided on pressure switch identified as GRD. Ground connection
MUST be made to this terminal.
Do not connect
motor to electrical power supply until unit is permanently grounded;
otherwise serious or fatal electrical shock hazard may be caused.
4. For best ground connection,
connect to grounded
lead in seiwice panel or to metal underground
water
pipe or well casing at least 10 ft. long. If plastic pipe
or insulated fittings are used, run ground wire db
rectly to metal well casing or use ground electrode
furnished by the power company.
12580994
To Connect
Pressure
Swi_:ch (Fig. 14)
Make sure power
to pump has been disconnected
at service
panel
before
connecting
pressure
switch.
1. Match motor voltage to power supply voltage.
2. Remove switch cover.
A
Figure U4 = n U5/2.30 volt motor wiring connections through ty'pical pressure switch.
Dual voltage motors come factory wired for 230 volt
operation. Unset shows i 15 Volt conversion,
3. Connect green ground wire to terminal in base or
side of switch marked GROUND, GRD, or @ .There
may be two ground terminals;
connect
to either
one.
Do not a_ter wiring in single voltage motors.
Match motor voltage to power supply voltage.
WInkING
CHART
= Recommended
MOTOR
HP
VOLTS
MAX. LOAD
AMPS
BRANCH FUSE*
RATING (AMPS)
1
115/230
19.2/9.6
25/15
Wire and Fuse Sizes
DISTANCE IN FEET FROM MOTOR TO METER
0 to 50
51 to 100
101 to 200
201 to 300
10/14
(*)Timedelay fuse or circuitbreakersare recommendedin any motorcircuit.
10/12
8/10
6/10
ELECTRICAL
/ OPE TUON
2360a 0697
2361a
A - CHose Regulator
Figure
R5 _ Priming
0697
1030a 0697
_
B = Fill Pump With
Connect
marked
power
supply
leads
LINE, L, or L1/L2.
5.
Motor leads should be connected
to switch
nals marked
LOAD, MOTOR,
M or M1/M2.
connect
them to switch
terminals.
6.
Make
that
a. Motor frame
a solid metal
b. Motor
minal
to switch
is connected
connection,
ground
wire
in switch.
7. Replace
pressure
for operation.
The
terminals
C - Start
b. Fill pump
15B).
termiIf not,
c. Replace
thread;
Pump _
D = Adjust
and
pipe
Regulator
to pressure
or
is connected
switch
cover.
switch
to ground
by
2.
ter-
operate
pump
switch
are conmetal
connection
is now
wired
Pump
]&WARNINGIBurn 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 s_ing.
a. Close regulator
15A).
before
valve (turn clockwise
If pressure
does not build up after
sevel_al times, check the following:
a. Suction
pipe
in the water.
b. Suction
pipe
has no leaks.
out. Make
Air can leak
sure
in even
all joints
c. Control
valve,
and operating
tape
on
where
priming
water
won't
pump
leak
are tight.
check valve,
correctly.
or foot valve installed
d. Pump trying to lift water more than rated lift for
deep well ejector
used (including
compensation
for horizontal
offset).
and
faucets
Teflon
(Figure
Stax_t Pump:
NOTICE:
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 gauge.
using
water
If pressure
does not build to 50 PSI, repeat steps a,
b, and c under Step No. 1 two or three times to remove entrapped
air from the suction pipes.
3.
I&WARNING
]Risk of explosion
pressure
gauge,
tighten
gauge.
with
Pressure
should increase
rapidly to 50 potmds
per
square inch or more as ejector
and pump prime.
If
so, go to step 4, below.
not
Pump
suction
NOTICE:
If a priming
tee and plug have been installed
for a long horizontal
run, be sure to fill suction
pipe
through
this tee and replace
plug.
(Don't
forget
to
teflon tape the plug.)
either:
Risk of electric
shock.
Do
unless
motor
and pressure
nected
to each
other
by a solid
and are grounded.
Priming
_
Pump
4.
sure
Water
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).
priming
- see Figure
4.
10
Once
slowly
unit has primed
and pressure
stabilized,
open (turn counterclockwise
- Figure
16A,
OPE T ON
/ MAUNTENANCE
Air Control
regulator
valve until pressure falters (pressure
gauge needle flutters; pump may become noisy- see
Figure 16B). At this point, close (turn clockwise)
regulator valve slightly until pressure stabilizes. This
setting provides maximum flow (Figure 16C).
5.
7.
Using
How
HINTS
To Handle
_N'enH
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 17). Since the gases rise in the well
casing, the water sucked down thi°ough the pipe and
into the suction pump is free of gas. This type of well
must be vented to the outside of any enclosure.
Cleaning
Figure
16A - Open
Regulator
Compound
Gauge
seems to be operating
ineffigauge can sometimes
help de-
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 a!l 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
will increase, ff necessary, reduce the regulator setting to b,ing 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.
/ MAUNTENANCE
A Gaseous
the
If the pump or system
ciently, the compound
termine the problem.
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 falteling of pressure. In this case, opec-ate
pump with regulator valve open.
HELPFUL
WeIBs
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.
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.
In Nowing
the Deep
Well
Jet
1.
2.
Disconnect
Disconnect
power.
piping and well seal or casing adapter.
3.
4.
Withdraw jet assembly from the well.
Unscrew and remove the venturi. Remove
zle with a socket wrench and clean.
5.
Replace
all parts, reprime,
and turn on power.
Valve
Figure 16B = Watch for Pressure Gauge to Flutter
cap
Figure
! 6C = Close Regulator
Pressure
Stabilizes
V, dve until
Figure
11
R7 = Gas/Air
Control
the noz-
in Well
HAmNTENANCE
Pump
1.
Diassembly
.
Pull disconnect
switch. Disconnect
power fines
from pressure switch.
Remove the two cap screws holding the pump to
the flange adapter. Don't disturb the piping in the
well.
2.
3.
Remove
surfaces
the flange adapter
clean.
gasket
and scrape
4.
Leaving the tubing in place, unscrew and remove
the straight barbed fitting at the pressure switch.
5.
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 18).
Hold the motor shaft with priers or vice grips
through the opening in the pump adapter. Unscrew
the impeller nut off the end of the shaft (see Figure
20).
the
Figure
.
Figure
.
20
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 21) to remove it.
]8
Turn the pump
upside
down
on the bench
and
block it. Remove
the four cap screws
fi'om the base,
With a mallet, tap upward
on the base to loosen
it.
Lift the base off of the intermediate
volute
(see
Figure
19).
Figure 2 R
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 22). Do not
mar the sealing surfaces; do not break pieces out
of the adapter or volute - the castings are easily
damaged.
Figure
7.
19
To reduce the chance
your foot, lay it down
won't roll.
of dropping
the pump onto
on the bench; block it so it
Figure
12
22
HAUNTENANCE
11. Remove
the intermediate
volute
and slide the im-
peller spacer off of the shaft.
12. Remove the impeller. Don't disturb the
you are only replacing the seal.
13. Rotate the seal spring retainer cup so
lines up with the shaft keys; remove
spring.
14. Remove the two cap screws holding
bracket to the motor.
.
shaft keys if
Carefully
slide the adapter
over the shaft (see
Figure 24). Do not damage the shaft sealing surface;
it is highly polished and any slight scratches or nicks
will ruin it.
that the slot
the cup and
the adapter
15. With two screwdrivers
on opposite sides of the
pump, carefully pry the pump adapter away from
the motor. This will puU the seal off of the motor
shaft. Use caution
to make sure that the ceramic
seal does not dig into the shaft and scratch the
shaft's sealing surface.
lns_llation
1.
2.
3.
Of New
Seal
Figure
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 them or hit them
with a hammer;
you could bend the shaft (see
Figure 23). When the keys are correctly installed,
the adapter will pass over the keys without interference.
5.
6.
Using the alignment marks made before disassembly, 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 25).
Figure
7.
Use plierswith careno hammers.
8.
Figure
23
13
24
25
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 water passage
holes line up with the water passages
in the volutes.
HAINTENANCE
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 otheg or the pump
will not be assembled correctly.
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 stir 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.
9.
12. Insert the four base capscrews
and tighten evenly
(see Figure 26). These should be easy to install if everything
is correctly
aligned. If not, don't force
them; go bach over your work and find and correct the misalignment.
Bolts should
be easy to
insert.
Make sure
all marks
line up.
11. Install the base volute gasket. Make sure the gasket
is _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. Maize sure that the pump discharge will correctly meet the the piping when the
pump is reinstalled.
Figure
26
13. Reinstall the pressure
sure tube.
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.
14
TROUBLESHOOTING
SYMPTOM
POSSIBLE CAUSE(S)
CORRECTIVE ACTION
Motorwill 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
!.
2.
3.
4.
Motor runs hot and
overload kicks off
1. Motor is wired incorrectly
2. Voltage is too low
1,
3. Pump cycles too frequently
Motor runs but no
water is delivered
I *(Note: Check
)rime before looking for other
causes. Unscrew
3ressure 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
3. Ejector or impeller is plugged
4. Check valve or foot valve is stuck
in closed position
5. Pipes are frozen
6. Foot valve and/or strainer are
buried in sand or mud
CHART
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.
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
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 well
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
t. 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 e
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
1.
2.
3.
4.
1.
2.
3.
4.
Pump cycles too
frequently
Air spurts from
faucets
Pump is picking up prime
Leak in suction side of pump
Well is gaseous
intermittent overpumping of well
3.
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.
6,
]5
Disconnect electrical power and open faucets until all
pressure is relieved. Using automobile tire pressure
gauge, check air pressure in tank at the valve stem located at top of tank. If less than 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.
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
REPAIR PARTS
MultioStage
Jet: Pump
ModeR
2
390.253250
3
14B
14
-14C
/
17
t
_--18
1281 0994
2080 1095
16
REPA| R PARTS
Repair Parts List - Multi=Stage Jet
Key
No.
2
3
4
5
6
7
8
9
10
11
12
13
14
14A
14B
14C
15
16
17
18"
Model Number
390.253250
1 HP
115/230V/60Hz
J218-600C
L43-5C
U36-112ZP
U217-1228
U37-672P
J212-24A
L2-16
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
U30-82ZP
F642-9502
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.)
Owner's Manual
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 Numbers
J212-24A
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
U30-60ZP
U30-69FTZP
U36-37ZP
*
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#
Spring
Spring Guide
Bonnet
Capscrew 5/16-18x3/4" Lg. (4 Req.)
Adjusting Screw 5/16-18x2"
Locknut 5/16-18
17
Standard hardware item; may be
purchased locally.
** Not mailable; specify freight or express.
o Not illustrated.
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.
To Order Parts,
Call Sears Product Service,
I =800=366=72 78
REPAIR
Sears
To Order Parts,
PARTS
Vertical
Casing
Adapters
and
Adapter
for MuRti°Stage
Call Sears Product Service,
1-800o366o7278
Flanges
Jet Pump
3
8
Adapter
Flange
Casing
Adapter
Repair Parts List ° Adapter Flange
Key
No.
Model
390.253250
1
2
3*
J20-12
J2-17B
U30-86PS
Part Description
Adapter Gasket
Adapter- 1-1/4"x1-1-1/4" NPT
1/2-13 x1-1/4" Long Capscrew (2 Req.)
* StandardHardwareItem, may be purchasedlocally.
Repair Parts List = Casing Adapters
Key
No.
1
2
3
4
5
6
7
8
9
J216-13
J216-14
2"
3"
U30-282ZP
J16-19ZZP
J21-19
J21-18
J51-1ZZP
U30-277ZP
J21-17
J 16-20ZZP
U36-38ZP
U30-282ZP
J 16-23ZZ
J21-19
J21-18
J51-3ZZ
U30-277ZP
J21-21
J16-24ZZP
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
REPAIR
PARTS
Jet PacEages
4" Double
2" and 3" Single Pipe Jets
Pipe Jets
Suction Pipe: 1-1/4"'_
Drive Pipe: 1"
/Well
Seal
Adapt/_er
--Steel
Nipple
_oupling
2
Well
<--Casing
_Adapter
12_
_Drop
Pipe
1" PipeAdapter
--9
_----
3
10-
132o 1094
5
Repair Parts List = Jet Packages
4
13601094
Key
No.
1359 1094
1
1
2
3
4
5
6
8
9
10
11
12
e
29670
2" Single
Pipe Jets
J32P-24
J32P-18
J34P-42
J40-24
J57-1
J43-14P
P122-10B
J66-13
Ul1-1
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
J37-4
29660
4" Double
Pipe Jets
J32P-24
J32P-18
J34P-42
N40-92
m
N212-12P
m
L8-1 P
U11-104P
J216-13
U37-116GP!
J216-14
U37-116GP
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
• Not illustrated.
Venturi
Selection
Chart
Max. Depth with Jet Package No.
29670
29902
29660
Pump
Model
HP
390.253250
1
19
Venturi
Installed
2" Single
Pipe
3" Single
Pipe
4" Double
Pipe
J32P-24
J32P-18
90'
180'
100'
210'
100'
210'
ULTi..STAGE
JET U P
Forthe repair or replacementpartsyou need
Call7 am - 7 pm, 7 days a week
t ..SOO-366-PARY
(1-800-366-7278)
For in-homemajorbrandrepair service
Call24 hours a day,7 days a week
1-8OO-4-REPAIR
(1-89g-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
For the locationof a
SearsRepairServiceCenterin yourarea
Call24 hours a day, 7 days a week
1-8OO-488- t 222
Forinformationon purchasinga Sears
Maintenance Agreementor to inquire
about an existingAgreement
call 9 am - 5 pm, Monday-Saturday
1-800-827-6655
o Part Number
® Part Description
America's
Repair
Sears, Roebuck and Co., Hoffman
Specialists
Estates, mL60179
U.S.A.