Shallow Well Jet Pumps/ Tank Systems OWNER’S MANUAL Sta-Rite Industries

Shallow Well  Jet  Pumps/ Tank Systems OWNER’S MANUAL Sta-Rite Industries
OWNER’S MANUAL
Sta-Rite Industries
Export Sales & Marketing Group
Shallow Well Jet Pumps/
Tank Systems
293 Wright Street, Delavan, WI 53115 U.S.A.
TELEPHONE; (262) 728-5551
TELEFAX (262) 728-4461
CABLE: STAREX TELEX: ITT 4970245
Series CJ
Installation/Operation/Parts
SX312 (Rev. 4/18/05)
Table of Contents
2
Thank you for purchasing a top quality, factory tested pump.
Page
Warranty ..............................................................................................................2
General Safety .....................................................................................................3
Installation ........................................................................................................3-5
Connecting Discharge Piping...............................................................................6
Electrical ...........................................................................................................7,8
Preparing To Start The Pump................................................................................9
Repair Parts .......................................................................................................10
Troubleshooting ..................................................................................................11
ATTACH ORIGINAL RECEIPT HERE FOR WARRANTY CONSIDERATION.
Limited Warranty
Sta-Rite warrants to the original consumer of the products listed below, that they will be free from defects in material and
workmanship for the Warranty Period from the date of original
installation or manufacture as noted.
Product
Warranty Period
Water Systems Products –
jet pumps, small centrifugal
pumps, submersible pumps
and related accessories
whichever occurs first:
1 year from date of
original installation, or
2 years from date
of manufacture
Hydro-Flow Filters
1 year from date of purchase
Signature 2000
Fibrewound Tanks
5 years from date of
original installation
Con-Aire® tanks
5 years from date of
original installation
Epoxy-Line Tanks
3 years from date of
original installation
Sump/Sewage/
Effluent Products
1 year from date of
original installation, or
2 years from date of manufacture
Our warranty will not apply to any product that has been subject to negligence, misapplication, improper installation or
maintenance. In the event a three phase submersible motor is
operated with single phase power through a phase converter,
or if three-leg ambient compensated, extra-quick trip overload
relays of recommended size are not used, our warranty is void.
Buyer’s only remedy and Sta-Rite’s only duty is to repair or
replace defective products (at Sta-Rite’s choice). Buyer agrees
to pay all labor and shipping charges associated with this warranty and to request warranty service through the installing
dealer as soon as a problem is discovered. If warranty service
is requested more than 30 days after the Warranty Period has
ended, it will not be honored.
STA-RITE SHALL NOT BE LIABLE FOR ANY CONSEQUENTIAL, INCIDENTAL, OR CONTINGENT DAMAGES WHATSOEVER.
THE FOREGOING WARRANTIES ARE EXCLUSIVE AND IN
LIEU OF ALL OTHER EXPRESS WARRANTIES. IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE, SHALL NOT EXTEND BEYOND THE
WARRANTY PERIOD PROVIDED HEREIN.
Certain states do not permit the exclusion or limitation of incidental or consequential damages or the placing of limitations
on the duration of an implied warranty, therefore, the limitations or exclusions herein may not apply. This warranty sets
forth specific legal rights and obligations, however, additional
rights may exist, which may vary from state to state.
Supersedes all previous publications.
Sta-Rite Industries, 293 Wright St., Delavan, WI 53115
Safety / Installation
READ AND FOLLOW
SAFETY INSTRUCTIONS!
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 serious
personal injury, death or major property damage if
ignored.
warns about hazards that can cause serious
personal injury, death or major property damage if
ignored.
warns about hazards that will or can cause
minor personal injury or property damage if ignored.
The label NOTICE indicates special instructions which
are important but not related to hazards.
Carefully read and follow all safety instructions in this
manual and on pump.
Keep safety labels in good condition.
Replace missing or damaged safety labels.
ELECTRICAL SAFETY
Capacitor voltage may be hazardous. To discharge motor capacitor, hold insulated handle screwdriver
BY THE HANDLE and short capacitor terminals together.
Do not touch metal screwdriver blade or capacitor terminals. If in doubt, consult a qualified electrician.
WARNING
Wire motor for correct
voltage. See “Electrical” section of this manual
and motor nameplate.
Ground motor before
connecting to power
supply.
Hazardous voltage.
Can shock, burn, or
cause death.
Ground pump before
connecting to power
supply. Disconnect power
before working on pump,
motor or tank.
Meet National Electrical Code, Canadian
Electrical Code, and local
codes for all wiring.
Follow wiring instructions in this manual
when connecting motor to
power lines.
3
GENERAL SAFETY
Do not touch an operating motor. Modern
motors are designed to operate at high temperatures. To
avoid burns when servicing pump, allow it to cool for 20
minutes after shut-down before handling.
Do not allow pump or any system component to freeze.
To do so will void warranty.
Pump water only with this pump.
Periodically inspect pump and system components.
Wear safety glasses at all times when working on pumps.
Keep work area clean, uncluttered and properly lighted;
store properly all unused tools and equipment.
Keep visitors at a safe distance from the work areas.
Pump body may explode if used as a
booster pump unless relief valve capable of passing full
pump flow at 75 psi is installed.
WARNING
Hazardous pressure!
Install pressure relief
valve in discharge pipe.
Release all pressure on
system before working on
any component.
REPLACING AN OLD PUMP
Hazardous voltage. Disconnect power to
pump before working on pump or motor.
1. Drain and remove the old pump. Check the old pipe
for scale, lime, rust, etc., and replace it if necessary.
2. Install the pump in the system. Make sure that all pipe
joints in the suction pipe are air-tight as well as water
tight. If the suction pipe can suck air, the pump will
not be able to pull water from the well.
3. Adjust the pump mounting height so that the plumbing
connections do not put a strain on the pump body.
Support the pipe so that the pump body does not take
the weight of piping or fittings.
You have just completed the well plumbing for
your new shallow well jet pump. Please go to Page 6
for discharge pipe and tank connections.
Installation
4
WELL POINT (DRIVEN POINT)
INSTALLATION (Figure 1)
CASED WELL INSTALLATION, 2" OR
LARGER CASING (Figure 2)
1. Drive the well, using “drive couplings” and a “drive
cap”. “Drive fittings” are threaded all the way through
and allow the pipe ends to butt against each other so
that the driving force of the maul is carried by the pipe
and not by the threads. The ordinary fittings found in
hardware stores are not threaded all the way through
the fitting and can collapse under impact. “Drive fittings” are also smoother than standard plumbing fittings, making ground penetration easier.
1. Mount the pump as close to the well as possible.
2. Assemble the foot valve, strainer, and well pipe (see
Figure 2). Make sure that the foot valve works freely.
To Household
Water System
Pump Priming
Tee and Plug
Suction Pipe
From Well
2. Mount the pump as close to the well as possible
3. Use the fewest possible fittings (especially elbows)
when connecting the pipe from the well point to the
pump suction port. The suction pipe should be at
least as large as the suction port on the pump
(include a check valve if your pump is not equipped
with one – see Figure 1). Support the pipe so that
there are no dips or sags in the pipe, so it doesn’t
strain the pump body, and so that it slopes slightly
upward from the well to the pump (high spots can
cause air pockets which can air lock the pump). Seal
the suction pipe joints with teflon tape or a teflon
based pipe joint compound. Joints must be air- and
water-tight. If the suction pipe can suck air, the pump
cannot pull water from the well. If one well point
does not supply enough water, consider connecting
two or three well points to one suction pipe.
To Household
Water System
Pump Priming
Tee and Plug
Priming
Tee and
Plug
Sanitary
Well Seal
1862 0795 INT
Not
to
Scale
10'
Min.
Foot
Valve
5–10'
Figure 2: Cased Well Installation
3. Lower the pipe into the well until the strainer is five
feet above the bottom of the well. It should also be at
least 10 feet below the well’s water level while the
pump is running in order to prevent the pump from
sucking air. Install a sanitary well seal.
Priming
Tee and
Plug
Check
Valve
Drive point
below water
level
1861 0795 INT
Not
to
Scale
Drive
Coupling
Drive
Point
Figure 1: Driven Point Installation
You have just completed the suction piping for
your new shallow well jet pump. Please go to Page 6
for discharge pipe and tank connections.
4. Install a priming tee, priming plug, and suction pipe
to the pump (see Figure 2). Connect the pipe from the
well to the pump suction port, using the fewest possible fittings – especially elbows – as fittings increase
friction in the pipe (however, include a foot valve –
see Figure 2). The suction pipe should be at least as
large as the suction port on the pump. Use teflon tape
or a teflon-based pipe joint compound on threaded
pipe joints. Support the pipe so that there are no dips
or sags in the pipe, so it doesn’t strain the pump
body, and so that it slopes slightly upward from the
well to the pump (high spots can cause air pockets
which can air lock the pump). Seal the suction pipe
joints with teflon tape or a teflon based pipe joint
compound. Joints must be air- and water-tight. If the
suction pipe can suck air, the pump cannot pull
water from the well.
You have just completed the suction piping for
your new shallow well jet pump. Please go to Page 6
for discharge pipe and tank connections.
Installation
5
INSTALLATION FOR SURFACE WATER
(Figure 3)
1. The pump should be installed as close to the water as
possible, with the fewest possible fittings (especially
elbows) in the suction pipe. The suction pipe should
be at least as large as the suction port on the pump.
2. Assemble a foot valve and suction pipe (see Figure 3).
Make sure that the foot valve works freely. Use teflon
tape or a teflon-based pipe joint compound on threaded pipe joints. Protect the foot valve assembly from fish,
trash, etc, by installing a screen around it (see Figure 3).
To Household
Water System
Pump Priming
Tee and Plug
Suction Pipe
From Water
Source
Check
Valve
Priming
Tee and
Plug
1863 0795 INT
Not
to
Scale
10'
Min.
Foot
Valve
5–10'
Screen
Figure 3: Surface Water Installation
3. Lower the pipe into the water until the strainer is five
feet above the bottom. It should also be at least 10
feet below the water level in order to prevent the
pump from sucking air.
4. Install a priming tee, priming plug, and suction pipe
to the pump (see Figure 3). Support the pipe so that
there are no dips or sags in the pipe, so it doesn’t
strain the pump body, and so that it slopes slightly
upward from the well to the pump (high spots can
cause air pockets which can air lock the pump). Seal
the suction pipe joints with teflon tape or a teflon
based pipe joint compound. Joints must be air- and
water-tight. If the suction pipe can suck air, the pump
cannot pull water from the well.
You have just completed the plumbing for your
new shallow well jet pump. Please go to Page 6
for discharge pipe and tank connections.
Discharge Pipe and Pressure Tank Connections
PRE-CHARGE TANK CONNECTION
(Figure 4)
1. Install two tees in the pump discharge port (see
Figure 4). The pipe size must be at least as large as
the discharge port.
To Household
Water System
Pump Priming
Tee and Plug
From Well
2. Run a pipe or reinforced hose from one arm of the
first tee to the port on the pre-charged tank.
3. Connect the other end of the discharge tee to your
plumbing system.
4. Check the pre-charge of air in the tank with an ordinary tire gauge. The pre-charge should be 2 PSI less
than the cut-in setting of the pump’s pressure switch.
The pre-charge is measured when there is no water
pressure in the tank. Adjust the tank precharge pressure to 28 PSI for a model CJ90E pump (30/50 pressure switch), or to 38 PSI for a model CJ90F pump
(40/60 pressure switch).
Congratulations! You have just completed
the tank connection for your jet pump.
Please go to Pages 7 and 8 for electrical hookup.
Check
Valve
1864 0795 INT
Figure 4: Pre-charged Tank Connections
6
Sealing Pipe Joints
Use only Teflon tape or Teflon based joint compounds for
making all threaded connections to the pump itself.
Do not use pipe joint compounds on plastic pumps:
they can react with the plastic in pump components.
Make sure that all pipe joints in the suction pipe are
air tight as well as water tight. If the
suction pipe can suck air, the pump will not be able
to pull water from the well.
Electrical
7
VOLTAGE CONVERSION
Hazardous voltage. Disconnect power at service panel before connecting pressure switch.
MOTOR SWITCH SETTINGS
Dual-voltage motors (motors that can operate at either
115 or 230 volts), are 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.
3. Move and attach the plug at the 115 volt position.
The plug will now cover 2 metal tabs. The arrow on
the plug will point to 115V.
4. The wires from the pressure switch should already be
attached to to power lead terminals.
NOTE: Never wire a 115 volt motor to a 230 volt line.
5. Reinstall the Motor end cover.
REMOVE MOTOR END COVER
Go to Pressure Switch Wiring below.
If you have a dual-voltage motor, and will connect it to
115 volts, follow the procedure below.
DIAL TYPE VOLTAGE SELECTOR
Ground
Screw
End Cover Screws
Voltage
Change Dial
Power Lead
Terminals
Motor
End Cover
Figure 5: Removing Motor End Cover
Figure 7: Voltage set to 230 volts, Dial Type
You will need to remove the motor end cover to change
the voltage setting.
To change to 115 volts:
Your motor terminal board (located under the motor end
cover) should look like one of those below.
PLUG TYPE VOLTAGE SELECTOR
Power Lead
Terminals
Figure 6: Voltage set to 230 volts, Plug Type
2. Pull the plug straight up.
3. The wires from the pressure switch should already be
attached to to power lead terminals.
PRESSURE SWITCH WIRING
Voltage Change
Plug
1. Make sure power is off.
2. Turn the dial counter-clockwise until 115 shows in
the dial window.
4. Reinstall the Motor end cover
Ground
Screw
To change to 115 volts:
1. Make sure power is off.
Motor wires connect here.
Power supply wires connect here.
230 Volt: Connect 2 hot wires (black and red)
here and cap the white (neutral) wire. It does
not matter which wire goes to which screw.
115 Volt: Connect one hot wire (black or red)
to one of these screws (it doesn't matter
which one). Connect the white (neutral) wire
to the other screw. Cap any remaining
black or red wires.
Clamp the power cable to prevent strain
on the terminal screws.
Connect the green (or bare copper) ground wire
to the green ground screw.
Figure 8: Pressure Switch Wiring
5. Go to Wiring Connections below.
3187 0704H
Electrical
8
.
HAZARDS, PRECAUTIONS
WARNING
Risk of explosion.
Do not ground to a
gas supply line.
Disconnect power
at panel before connecting pressure switch.
Supply voltage must
be within ±10% of
nameplate voltage.
Incorrect voltage can
cause fire or seriously
damage motor and voids
warranty. If in doubt consult a licensed electrician.
Hazardous voltage. Can
shock, burn, or cause death.
Disconnect power to motor
before working on pump or
motor.
Ground motor before
connecting to power supply.
Use wire size
(including ground
Connect the power supply wires to the pressure
switch terminals marked LINE, L, or L1/L2. It doesn’t
matter which power supply wire goes to which of
these terminals in the pressure switch. In a new
pump, the motor leads will already be connected to
the switch; the motor will be hooked up for 230
volts. If your power supply is 115 volts, see Figure 6.
If you are replacing the pressure switch, connect the
motor leads to the switch terminals marked LOAD,
MOTOR, M or M1/M2. Make sure that either:
a. The motor frame is connected to the pressure
switch by a solid metal connection, or
b. The motor ground terminal is connected to the
switch ground terminal by a solid metal conductor at least as large as the wires carrying power to
the motor.
4. Replace the pressure switch cover.
You have just completed the wiring for your pump.
Please go to Page 9 for startup preparations.
wire) specified in Wiring Chart.
If possible, connect the pump to a separate branch circuit with no other appliances on it.
About Grounding
Do not operate pump unless motor and pressure
switch are connected to each other by a solid
metal connection and are grounded.
Grounding an electrical device protects you, the user, from
dangerous electrical shocks and burns by providing a safe
path for the electricity in cases of current leakage to ground
(due to a short circuit, broken wire, etc.). The circuit breaker
will sense a rush of current and will open or ‘trip’, disconnecting the device and stopping the current flow.
WIRING CONNECTIONS
NOTICE: Your pump installation must comply with all
local codes that apply.
1. In a new pump, the motor leads will already be connected to the switch; the motor will be hooked up for
230 volts. If your power supply is 115 volts, see
Figure 5, Page 7.
2. Connect the ground wire (the green wire) first.
Connect it to ground (see About Grounding, at left)
and then to the terminal on the base or the side of the
pressure switch marked GROUND, GRD, or
.
There may be two ground terminals; if so, connect to
either one. See Figure 8 for details.
NOTICE: If you are connecting the motor to a 230
volt circuit using a four-conductor cable, connect
both the neutral (white) and ground (green) to the
ground terminal. The other two wires (two black
wires or one black and one red wire) are the power
supply wires.
A circuit breaker which includes a Ground Fault Circuit
Interrupter (a “GFCI Breaker”) will protect you from small
current leakages to ground as well as short circuits. To avoid
nuisance tripping of the GFCI, consult a licensed electrician
about details of size and type of breaker to use.
For the best ground connection, connect the ground wire to
a grounded lead in the service panel or to a metal underground water pipe or well casing at least 10 ft. long. If you
use plastic pipe or insulated fittings, run the ground wire
directly to the metal well casing or use the ground electrode
furnished by the power company.
The ground wire should be of the same type and size as the
wires used to carry power to the motor.
Never try to use a gas supply line as a grounding connection point. It could explode.
Never operate this pump unless the motor is solidly grounded.
If you are not sure about how to ground the pump and
motor, consult a licensed electrician.
Wiring Chart – Recommended Wire and Fuse Sizes
DISTANCE IN FEET(METERS) FROM MOTOR TO SUPPLY
Branch Fuse
Rating Amp
0 - 100
(0 - 30)
101 - 200
(31 - 61)
201 - 300
(62 - 91)
301 - 400
(92 - 122)
401 - 500
(123 - 152)
Motor HP
Volts
Max. Load
Amp
1
115/230
14.8/7.4
20/15
12/14 (3/2)
8/14 (8.4/2)
6/14 (14/2)
6/12 (4/3)
4/10 (21/5.5)
1-1/2
115/230
19.2/9.6
25/15
10/14 (5.5/2)
8/14 (8.4/2)
6/12 (14/3)
4/10 (21/5.5)
4/10 (21/5.5)
AWG WIRE SIZE (mm2)
Preparing to Start the Pump
9
2. Replace all fill plugs.
PRIMING
Never run pump against closed discharge. To
do so can boil water inside pump, causing hazardous
pressure in unit, risk of explosion and possibly scalding
persons handling pump.
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.
Fill pump
and piping
through
priming tee.
1866 0795 INT
Figure 9: Prime the Pump
1. Remove the priming plug from the pump and fill the
pump, fill all piping between the pump and the well,
and make sure that all piping in the well is full. If you
have also installed a priming tee in the suction piping, remove the plug from the tee and fill the suction
piping.
3. Power on! Start the pump. If you don’t have water
after 2 or 3 minutes, stop the pump and remove the
fill plugs. Refill the pump and piping. You may have
to repeat this several times in order to get all the
trapped air out of the piping. A pump lifting water 25’
may take as long as 15 minutes to prime.
4. After the pump has built up pressure in the system
and shut off, check the pressure switch operation by
opening a faucet or two and running enough water
out to bleed off pressure until the pump starts. The
pump should start when pressure drops to 30 PSI and
stop when pressure reaches 50 PSI. Run the pump
through one or two complete cycles to verify correct
operation. This will also help clean the system of dirt
and scale dislodged during installation.
Congratulations on a successful installation.
If you were unsuccessful, please refer to the
Troubleshooting section
(Page 10) or call our customer service technical staff.
Thank you for purchasing
Sta-Rite Products.
Repair Parts
10
1
21
19 20
2
3
4
5A
5B
6
18
7
8
9
17
16
10
15
14
13
341 0397
12
11
Models CJ90E and CJ90F
Model
Key
No.
1
2
3
4
5A
5B
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Part
Description
Motor
Slinger
Seal Plate
O-Ring
Shaft Seal Seat
Shaft Seal Rotating
Impeller
Venturi
O-Ring
90° Hose Barb
Pump Body
Plug, Stainless Steel
Washer
Screw, Socket Head
Base
Bolt
Pressure Switch Tube
1/4” NPT 90° Hose Barb
Nut, M6x1 SS
Pressure Switch
1/2” Locknut
Connector
No.
Used
1
1
1
1
1
1
1
1
1
1
1
1
1
8
1
2
1
1
8
1
1
1
CJ90E
1 HP
J218-1006
C69-7
784S0070
111P0490
111P0510
111P0500
101P1720
101P2900
111P1100
171P4750T
723S0850
121P2100
111P0990
121P0310
C4-42P
U30-74SS
U37-672P
U111-212T
U36-207SS
U217-1202
U36-112ZP
L43-5C
CJ90F
1-1/2 HP
J218-1007
C69-7
784S0070
111P0490
111P0510
111P0500
101P1720
101P2900
111P1100
171P4750T
723S0850
121P2100
111P0990
121P0310
C4-42P
U30-74SS
U37-673P
U111-212T
U36-207SS
U217-1204
U36-112ZP
L43-5C
Troubleshooting
SYMPTOM
Motor will not run
Motor runs hot and
overload kicks off
Motor runs but no
water is delivered*
* (Note: Stop pump;
then check prime
before looking for
other causes.
Unscrew priming
plug and see if water
is in priming hole).
Pump does not
deliver water to full
capacity
11
POSSIBLE CAUSE(S)
CORRECTIVE ACTION
Disconnect switch is off
Fuse is blown or circuit breaker tripped
Starting switch is defective
Wires at motor are loose,
disconnected, or wired incorrectly
Be sure switch is on.
Replace fuse or reset circuit breaker.
DISCONNECT POWER; Replace starting switch.
Refer to instructions on wiring (Page 8). DISCONNECT POWER; check and
tighten all wiring.
Pressure switch contacts are dirty
Capacitor voltage may be hazardous. To discharge
capacitor, hold insulated handle screwdriver BY THE HANDLE and
short capacitor terminals together. Do not touch metal screwdriver
blade or capacitor terminals. If in doubt, consult a qualified electrician.
DISCONNECT POWER and file contacts with emery board or nail file.
Motor is wired incorrectly
Voltage is too low
Refer to instructions on wiring.
Check with power company. Install heavier wiring if wire size is too small
(See Electrical / Wiring Chart).
Pump cycles too frequently
See section below on too frequent cycling.
Pump in new installation did
not pick up prime through:
1. Improper priming
2. Air leaks
In new installation:
3. Leaking foot valve or check valve
Pump has lost prime through:
1. Air leaks
2. Water level below suction pipe inlet
Foot valve or strainer is plugged
Ejector or impeller is plugged
Check valve or foot valve is stuck shut
Pipes are frozen
Foot valve and/or strainer are
buried in sand or mud
Water level is too low for shallow well
setup to deliver water
1. Re-prime according to instructions.
2. Check all connections on suction line with soapy water
or shaving cream.
3. Replace foot valve or check valve.
In installation already in use:
1. Check all connections on suction line and shaft seal.
2. Lower suction line into water and re-prime. If receding water level
in well exceeds 25’ (7.6M), a deep well pump is needed.
Clean foot valve or strainer.
Clean ejector or impeller.
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 bottom of water source.
Clean foot valve and strainer.
A deep well jet package may be needed (over 25 ft. to water)
to deliver water.
Water level in well is lower than
estimated
Steel piping (if used) is corroded or
limed, causing excess friction
Piping is too small in size
Packed well point
A deep well jet will be needed if your well is more than 25’ (7.6M)
depth to water.
Replace with plastic pipe where possible, otherwise with new steel pipe.
Pump delivers water but
does not shut off or
pump cycles too
frequently
Pressure switch is out of adjustment or
contacts are welded together
Faucets have been left open
Venturi, nozzle or impeller is clogged
Pipes leak
Foot valves leak
Air charge too low in pre-charged tank
DISCONNECT POWER; adjust or replace pressure switch.
Air spurts from faucets
Pump is picking up prime
Leak in suction side of pump
Well is gaseous
Intermittent over-pumping of well.
(Water drawn down below foot valve.)
Use larger piping.
Backflush well point or sink new point.
Close faucets.
Clean venturi, nozzle or impeller.
Check connections.
Replace foot valve.
DISCONNECT POWER and open faucets until all pressure is relieved.
Using tire pressure gauge, check air pressure in tank at valve stem
located on the tank. If less than pressure switch cut-in setting (30/50
PSI for CJ90E, 40/60 PSI for CJ90F), pump air into tank from outside source
until air pressure is 2 PSI less than cut-in setting of switch. Check air valve
for leaks (use soapy solution) and replace core if necessary.
When pump has picked up prime, it should pump solid water with no air.
Suction pipe is sucking air. Check joints for leaks with soapy water.
Consult factory about installing a sleeve in the well
Lower foot valve if possible, otherwise restrict pump discharge
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