Craftsman 390.253250 User manual

MODELNO.
390.253250
CAUTION:
Read and Follow
All Safety Rules and
Operating Ins_rucfians
Before FirstUse of
This Product.
Save This Manual For
FutureReference.
ULTra-STAGEJET PU
•Safety Instructions
.Installation
.Electrical
•Operation
.Maintenance
.Repair Parts
P
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.
PRINTED IN U.S.A. Form No. F642-9S02 (Rev. 6/20/97)

CONTENTS
INTRODUCTION/WARRANTY .................................. 2
MAJOR COMPONENTS .............................................. 3
PUMP PERFORMANCE ............................................... 4
INSTALLATION ........................................................ 5-8
ELECTRICAL .......................................................... 9-10
OPERATION ........................................................ 10-11
HELPFUL HINTS /MAINTENANCE ..................... 11-14
TROUBLESHOOTING GUIDE .................................. 15
REPAIR PARTS ..................................................... 16-19
UNTRODUCTION
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.
FULL ONE YE&R W&R_NTY ON PUMPS
For one yearfrom the dateof purchase,Searswillrepair or replacethispumpfree of charge, if defective in material or work-
manship,
This warrantydoes not cover repairsor replacementparts necessary becauseof abuse, negligenceincludingfailureto install,
adjust and operatethis pumpaccordingto the instructionsin the owners manual.
LIMITATION OF LIABILITY
SEARS WILLNOT BELIABLEFOR LOSS ORDAMAGETOPROPERTYORANY INCIDENTALORCONSEQUENTIALLOSS
OR EXPENSEFROM PROPERTYDAMAGE DUE DIRECTLYORINDIRECTLYFROM THE USE OF THISPRODUCT.
Some states do not allowthe exclusionor limitationof incidental or consequentialdamages, sothe above limitationor exclu-
sion may notapplyto you,
WARRANTYsERvIcE IS AVAILABLE BY SIMPLY CONTACTING THE NEARESTSEARS SERVICE CENTER!DEPART.
MENT IN THE UNITEDSTATES ofAMERICA, Forservice outsidethe U.S.A. contactyourlocal SearsServiceCenter or store.
This warrantygives you specific legalrights, and you may also haveother rightswhich vary from stateto state.
Sea_, Koebuck and Co., Dept. 817 WA, Hoffman Est.ates, mL60|79
P,ULES FOP, SAFE iNSTALLATiON AND OPEPJ ,THON
Carefully read and follow all safety instructions in this
manual or on pump
_k 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 ff
ignored.
[&WARNING] 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 ff ig-
nored.
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.
[&WARNINGJ TO avoid serious injux T 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 run 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 tractions:
1. 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).
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 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 mo-
tion 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 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 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 pres-
sure. 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 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
7 for 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
29670* 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
390.253250 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
1HP 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 11.0 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. 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

RNSTALLATION
Do not use on shallow wells!
(25 feet or less in depth)
Use New Pipe for Best Results.
Body _ Clean Flow!
1096 0697
From
Well
Figure I = No Dirt or Scale in Suction Pipe
1100 0697
Figure 2=Foot Valve Must Work Freely
If Air Pockets Form, Water Won't Flow.
Keep Pipe Straight and Angled up to Pump.
Figure 3- No Air Pockets in Suction Pipe
Pipe Joint
No Air Leaks Compound Will
in Suction Pipe. Plastic.
If Air Flows
Water Won't
Use Teflon Tape.
Figure 4 = Suction Pipe Must Not Leak
1102 0697
Casing
T
Deep well is more
than 25' (7.6M)
to water with
pump running.
Foot
Valve &
Strainer
Figure 5=Use Pump On Deep Well Only
822b 0697
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.
[ak CAOTION] 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.

DEEP WELL INSTALLATION FOP, DOUBLE PIPE
Pum
Priming
Tee and Gasket
Plig
Pipe Nipple
Drive Pipe
-- 1-1/4" Plastic Suction Pipe
1-1/4" Plastic Pipe
Adapter. (Supplied with Ejector)
-- 1" Plastic Pipe Adapter
Figure 6 - Offset installation
Plastic Pipe Shown
ipling
-- Pump
I Gasket
__ Adapter Flange
, ___-L jThreadlesseoupling[_-I_;1_
_ _ Sae_it_al
-- EjectorAssembly
-- Check Valve
1-'_E 1 0St5ainer
Figure 7= Over the Well Bnstallation
Steel Pipe Shown
Suction: 1-1/4"
Drive: Pipe or Plastic
1-1/4" Pipe Pipe Adapter
orPipePlastic l
Ada
1-1/4"
Cou
1-1/4x1"
Face
Bushing
1" Nipple
1386 1194
Figure 8 - Jet Assembly With
I" and i- 114" Drive Pipes
Piping in The Deep 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 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 installations. Due
to its light weight, it is easy to handle and does not usu-
ally require a block and tackle for installation and re-
moval.
Double Pipe Rnstallation-Plastic Pipe
NOTICE: Use Teflon tape on all male threads on plas-
tic pipe and fittings to prevent air leaks in suction pip-
hag.
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.
4. Install nozzle and venturi in deep well ejector.
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).
6. Thread a 1" plastic pipe adapter or a 1" nipple into
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.
,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
Drive Pipe
Pipe
Venturi
Nozzle_
Ejector------_
Cup
Leathers
Water level
with pump
ing
10 to 20 Feet
5 Feet
or more
_1
Figure 9
14. See "Discharge Pipe Sizes" for information regard-
ing correct discharge pipe size.
Steel Piping
The special adapter nipple is not used with steel pip-
ing.
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
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):
Pipe Clamp
L
Figure IOA -Use tripod and lever hoist to lower
pipe into the well
'_----q"
e
!
•..... i
Figure i0B -Pipe clamp detail
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).
1. Connect ejector to first length of pipe. Use pipe
joint compound sparingly on male threads.
2. 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
390.253250 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 TANK
Sears Stock No. 2761
Pump to Tank Piping
1" Discharge -
Relief Valve Sears
Stock No. 27229
Air Volume Control Tubing/Fitting"
Sears Stock No. 27881
We!l Seal
I
/
To Service
"_ Pressure
1/_ Regulat°r
2355b 0697nc
Figure I I=Pump With Standard Tank
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
rtmning, 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 in-
creased to reduce pressure losses caused by fric-
tion.
• Up to 100 ft run: 1"
• 100 ft. to 300 ft run: 1-1/4"
• 300 ft. to 600 ft rtm: 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.
Pressure
Regulator
Piping Tee and
1" Discharge
_' Relief Valve
To Service 2358b0697nc
Figure 12 = Pump With Captive-Air* Tank
Check Pressure with
Tire Gauge
Captive-Air_ Tank
1054 0697n¢
Figure 13 = Checking Tank Pre-charge
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.
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 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 recom-
mended.

ELECTRmCAL
WARNING
Hazardousvoltage.
Can shock, burn,or cause
death.
Groundpumpbefore
connectingto powersupply.
IAWARNING IDisconnect power at service panel
before connecting pressure switch.
To convert from
230 to 115 Volts:
Move white wire
w/black tracer
from B to A.
Move black wire
from A to L1.
Motorwires
are connected
to thesetwo
screws.
Clamp
power
cable to
prevent
strain on
]terminal
_screws.
")
copper,orounOw,re!iii1
to green ground screw.
Connect black and white
power supply wires tothese two screws, one i_
Y
wire to each screw.
It doesn't matter which
wire goes to which screw. 12580994
Figure U4 = nU5/2.30 volt motor wiring connec-
tions through ty'pical pressure switch.
Dual voltage motors come factory wired for 230 volt
operation. Unsetshows i 15Volt conversion,
Do not a_ter wiring in singlevoltage motors.
Match motor voltage to power supply voltage.
AGround motor before connecting to electri-
cal 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 sep-
arate 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.
Wiring (Fig. 14)
1. Install, ground, wire and maintain pump in accor-
dance 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.
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 pres-
sure switch identified as GRD. Ground connection
MUST be made to this terminal. Do not connect
motor to electrical power supply until unit is per-
manently grounded; otherwise serious or fatal elec-
trical 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.
To Connect Pressure Swi_:ch (Fig. 14)
A Make sure power to pump has been discon-
nected at service panel before connecting
pressure switch.
1. Match motor voltage to power supply voltage.
2. Remove switch cover.
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.
WInkING CHART = Recommended Wire and Fuse Sizes
MOTOR MAX. LOAD BRANCH FUSE* DISTANCE IN FEET FROMMOTORTO METER
HP VOLTS AMPS RATING(AMPS) 0 to 50 51 to 100 101 to200 201 to 300
1 115/230 19.2/9.6 25/15 10/14 10/12 8/10 6/10
(*)Timedelayfuseorcircuitbreakersare recommendedin anymotorcircuit.

ELECTRICAL /OPE TUON
2360a 0697
2361a 0697 1030a 0697
A - CHose Regulator _ B =Fill Pump With Water _ C -Start Pump _D = Adjust Regulator
Figure R5 _ Priming Pump
4. Connect power supply leads to switch terminals
marked LINE, L, or L1/L2.
5. Motor leads should be connected to switch termi-
nals marked LOAD, MOTOR, M or M1/M2. If not,
connect them to switch terminals.
6. Make sure that either:
a. Motor frame is connected to pressure switch by
a solid metal connection, or
b. Motor ground wire is connected to ground ter-
minal in switch.
Risk of electric shock. Do not operate pump
unless motor and pressure switch are con-
nected to each other by a solid metal connection
and are grounded.
7. Replace pressure switch cover. Pump is now wired
for operation.
Priming The Pump
]&WARNINGIBurnhazard. 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.
I&WARNING]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
15A).
b. Fill pump and suction pipe with water (Figure
15B).
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 run, be sure to fill suction pipe
through this tee and replace plug. (Don't forget to
teflon tape the plug.)
2. Stax_t Pump:
Pressure should increase rapidly to 50 potmds per
square inch or more as ejector and pump prime. If
so, go to step 4, below.
If pressure does not build to 50 PSI, 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
sevel_al 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).
4. Once unit has primed and pressure stabilized,
slowly open (turn counterclockwise - Figure 16A,
10