STA-RITE MSC-6, MSD-6, MSF-6, MSG-6, MSC-7 Owner's Manual

OWNER’S MANUAL

Multi-Stage Deep Well Jet Pumps

©2001, Sta-Rite Industries, Inc. PRINTED IN U.S.A. S757-1 (Rev. 10/31/01)

293 Wright Street, Delavan, WI 53115

“MS” Series

Installation/Operation/Parts

For further operating, installation, or maintenance assistance:

Call 1-262-728-5551

60

40

20

80

100

Safety 2

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.
Make workshops childproof; use padlocks and master

switches; remove starter keys.

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.

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.
Freezing may damage system, leading to injury or flood­ing. Allowing pump or system components to freeze will
void warranty.

Relief valve must be capable of passing full pump flow at
75 PSI.

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.

WARNING

Hazardous pressure!
Install pressure relief
valve in discharge pipe.

Release all pressure on
system before working on
any component.

WARNING

Hazardous voltage.
Can shock, burn, or
cause death.

Ground pump before
connecting to power
supply. Disconnect power
before working on pump,
motor or tank.

Wire motor for correct

voltage. See “Electri­cal” section of this manual
and motor nameplate.

Ground motor before

connecting to power
supply.

Meet National Electri-

cal Code, Canadian
Electrical Code, and local
codes for all wiring.

Follow wiring instruc-

tions in this manual
when connecting motor to
power lines.

Table of Contents 3

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,

whichever occurs first:

small centrifugal pumps, submersible pumps 1 year from date of original installation, or
and related accessories 2 years from date of manufacture

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 three­leg 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 WAR-

RANTIES, 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, Inc. 293 Wright St., Delavan, WI 53115

Page

General Safety .....................................................................................................2

Warranty..............................................................................................................3

Installation........................................................................................................4-7

Electrical...........................................................................................................8-9

Operation .....................................................................................................10-11

Maintenance.................................................................................................12-13

Troubleshooting..................................................................................................14

Repair Parts .................................................................................................15-16

Figure 1: No Dirt or Scale in Suction
Pipe

Figure 2: Foot Valve Must Work Freely

Figure 3: No Air Pockets in Suction
Pipe

Installation 4

0

Figure 4: Suction Pipe Must Not Leak

BEFORE YOU INSTALL YOUR PUMP

NOTE: For proper performance, pump MUST be matched to ejector and to

well depth. Use shallow well installation for wells up to 25 ft depth to
water and deep well ejector for depths up to 130 ft.

Step 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.

Step 2. Be sure well is clear of sand. Sand will plug the pump and void the

warranty.

Step 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).
Step 4. Be sure all pipes and foot valve are clean and in good shape.
Step 5. No air pockets in suction pipe.
Step 6. No leaks in suction pipe. Use Teflon tape or Plasto-Joint Stik to seal

pipe joints.
Step 7. Match pump to well.

IMPORTANT: Flow into well must at least equal flow out through

pump!
Step 8. Unions installed near pump and well will aid in servicing. Leave

room to use wrenches.
Step 9. Plug 1” drive port when installing on shallow well.

SHALLOW WELL/CENTRIFUGAL INSTALLATION

No ejector is used in this case, plug the smaller of the two inlet ports, using
the larger for the suction pipe. Refer to Figure 6 for installation tips.
Maximum depth to water for shallow well/centrifugal operation is 25 feet.

NOTE: To avoid pump overloading and motor failure, install a flow control
valve at the discharge to limit flow to 20 gallons per minute.

Figure 5: Double Pipe Deep Well

Figure 6: Cased Shallow Well
and Drive Point Shallow Well

Dirt and Scale Plug Pump and Pipes!

Use New Pipe for Best Results.

Pump

Body

Clean Flow!

From

Well

No Sags

Sags Allow Air Pockets

If Air Pockets Form, Water Won’t Flow.

Keep Pipe Straight and Angled up to Pump.

Pipe Joint

No Air Leaks

in Suction Pipe.

If Air Flows

Water Won’t

Use Teflon Tape.

Compound Will

Damage Plastic.

Deep well is more
than 25' (7.6M)
to water with
pump running.

Well
Casing

Foot
Valve &
Strainer

1102

Check
Valve

1" NPT
Plug

Shallow well is less
than 25' (7.6M)
to water with
pump running.

Drive
Well
Casing

Foot
Valve &
Strainer

Coupling

Drive
Point

1" NPT
Plug

Be sure
entire
well
point is
below
water.

Installation 5

PIPING IN THE DEEP WELL

See Figures 7 and 8.
NOTE: 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.

PLASTIC PIPE INSTALLATION – DOUBLE PIPE

NOTE: Use Teflon tape on all male threads on plastic pipe and fittings to

prevent air leaks in suction piping.
Step 1. Inspect ejector to make sure that nozzle and venturi openings are

clean and clear.

Step 2. Inspect pipe for any foreign matter or obstructions.

IMPORTANT: Make sure that no foreign matter enters pipe open­ings while installing pump.

Step 3. Make sure foot valve operates freely: attach to ejector with a close

nipple. Use Teflon tape on male threads.
Step 4. Install nozzle and venturi in deep well ejector.
Step 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 Figure 7A).
Step 6. Thread a 1” plastic pipe adapter into the 1” tapped hole in ejector

body (see Figure 7A).
Step 7. Install sufficient plastic pipe in well casing to place ejector at the

proper depth. (Your well driller should supply this information.)

IMPORTANT: as a guide, the ejector should be set at least 10 to

20 feet below the lowest water level with pump running, if possi-

ble, but always at least five feet from the bottom of the well.
Step 8. Tighten all hose clamps securely on plastic pipe. Use two clamps

per joint to prevent air leaks into suction pipe. Clamp screws

should be on opposite sides of the pipe. Fill pipes with water to

make sure that foot valve and connections do not leak.
Step 9. Install sanitary well seal on top of well casing; use steel nipple

through well seal as shown in Figure 7A.

IMPORTANT: align locating lugs on adapter flange and pump base

so that pump discharge will be aligned with piping.
Step 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.
Step 11. Slide threadless coupling up and secure nipple to drive pipe.
Step 12. Remove paper backing from adhesive gasket. Apply gasket to

adapter flange, making sure that holes line up.
Step 13. Align locating lugs on pump base with locating lugs on adapter

flange; attach pump to flange with cap screws provided.
Step 14. See “Discharge Pipe Sizes” for information regarding correct dis-

charge pipe size.

Figure 7

Pump

Gasket
Adapter Flange

Sanitary
Well Seal

Steel Pipe Nipple
Coupling

1" Plastic Drive Pipe

1-1/4" Plastic Suction Pipe

Special 1-1/4" Plastic Pipe
Adapter. (Supplied with Ejector)

1" Plastic Pipe Adapter

Ejector Assembly

Foot Valve & Strainer

A-OFFSET INSTALLATION

PLASTIC PIPE SHOWN

474 0194

B-OVER THE WELL INSTALLATION

STEEL PIPE SHOWN

Threadless
Coupling

Pump

Gasket

Adapter Flange

Threadless Coupling

Sanitary
Well Seal

1" Drive Pipe

1-1/4" Suction Pipe

Ejector Assembly

Foot Valve & Strainer

SINGLE PIPE EJECTOR INSTALLATION

Single pipe installations require (see Figure 8):

a. Galvanized steel pipe
b. Leather packer-type ejector with built-in foot valve
c. Turned couplings (supplied with packer-type ejector)
d. Well casing adapter.

Step 1. Connect ejector to first length of pipe. Use pipe joint compound

sparingly on male threads.

Step 2. Lower pipe into casing. Use special turned couplings (included

with 2” single pipe ejector package) to increase water flow. Use
pipe joint compound sparingly on male couplings threads.

NOTE: Fill pipe with water as each length is added to be sure foot valve
and connections do not leak.

Step 3. Add lengths of pipe until the ejector reaches the proper depth.

(Your well driller should supply this information.)

IMPORTANT: as a guide, the ejector should be set at least 10 to 20 feet
below the lowest water level with pump running, if possible, but always at
least 5 feet above the bottom of the well (see Figure 8).

Step 4. To properly seat the cup seals, after the ejector is correctly posi-

tioned move the assembly up and down slightly. Water pressure in
the casing will then soak the cup seals (see Figure 8). They should
seal within 2-3 hours after installation.

Step 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

Step 1. If increasing discharge pipe size, install reducer in pump discharge

port. Do not increase pipe size by stages.

Step 2. When the pump is set away from the points of water use, the dis-

charge pipe size should be increased to reduce pressure losses
caused by friction.

• Up to 100 ft run: Same size as pump discharge port.

• 100 ft. to 300 ft run: Increase one pipe size.

• 300 ft. to 600 ft run: Increase two pipe sizes.

Figure 8

Installation 6

Pump
mounted
on Casing
Adapter

Casing Adapter
(Use gasket
between adapter
and pump flange)

Well Casing
serves as
Drive Pipe

Suction
Pipe

Venturi

Nozzle
Ejector

Cup
Leathers

2357b 0697

Water level
with pump
running

24

J32P-

JET NO.

10 to 20 Feet

5 Feet
or more

Installation 7

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.

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 10 for typical standard tank installation.
To connect AVC to pump, thread a 1/4” 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 10 for
typical precharged tank installation. A precharged tank contains a factory
provided air charge.

IMPORTANT: your pump pressure switch is set for a 30-50 PSI range and
requires a tank pre-charge of 28 PSI for proper operation (see Figure 11).
See tank owner’s air charge. An annual check on tank charge is recom­mended.

Figure 9: Pump With Standard Tank

Figure 10: Pump With Pre-charged
Tank

Figure 11: Checking Tank Pre-charge

Standard Tank

Air Volume

Control

(AVC)

1" Discharge

Relief Valve

AVC Tubing

Well Seal

2355b 0697

Pre-Charged

Pressure Tank

Pressure
Regulator

AVC
Port

60

40
20

80
100

1" Discharge

2358b 0697

Relief Valve

10

20

30

Check Pressure With

Tire Gauge

Pressure
Regulator

1054 0697

Electrical 8

Hazardous voltage. Can shock, burn, or kill. Connect ground

wire before connecting power supply wires. Use the wire size (including
the ground wire) specified in the wiring chart. If possible, connect the

pump to a separate branch circuit with no other appliances on it.

Explosion hazard. Do not ground to a gas supply line.

WIRING CONNECTIONS

Fire hazard. Incorrect voltage can cause a fire or seriously

damage the motor and voids the warranty. The supply voltage must be with­in ±10% of the motor nameplate voltage.

NOTICE: Dual-voltage motors are factory wired for 230 volts. If necessary,
reconnect the motor for 115 volts, as shown. Do not alter the wiring in sin­gle voltage motors.

Install, ground, wire, and maintain your pump in compliance with the
National Electrical Code (NEC) or the Canadian Electrical Code (CEC), as
applicable, and with all local codes and ordinances that apply. Consult
your local building inspector for code information.

Disconnect power before working on pump, motor, pressure switch, or wiring.

Figure 12: Motor wiring connections through Pressure Switch. Match motor voltage to line voltage.

Your Motor Terminal Board (under the motor end cover)
and Pressure Switch look like one of those shown below.
Convert to 115 Volts as shown. Do not change motor

wiring if line voltage is 230 Volts or if you have a single
voltage motor. Connect power supply as shown for your
type of switch and your supply voltage.

230 Volt to 115 Volt Conversion. Move plug to change voltage.

Ground
Screw

230 V

230V

115V

A

A

230V

115V

L2

L2

L1

L1

230 Volt to 115 Volt Conversion. Move plug to change voltage.

Pull plug

1.

straight
out from
terminal
board.

230

Volts

1.

A

115

Volts

L1

115 V

230V

115V

Power Supply
Wires

2.

Plug in again
with arrow
on plug
pointing to
'115 Volts'.

2.

A

A

230V

115V

L2

L2

L1

L1

Ground
Screw

230

Volts

A

115

Volts

L1

3962 0401 A

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.

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.

3187 0398

Electrical 9

WIRING CHART – Recommended Wire and Fuse Sizes

BRANCH DISTANCE IN FEET FROM MOTOR TO METER

MAX.

FUSE*

0 51 101 201

MOTOR

VOLTS LOAD

RATING

TO TO TO TO

HP

AMPS

AMPS

50 100 200 300
1/2 115 13.0 20 12 12 10 8
1/2 230 6.5 15 14 14 14 14
3/4 115 14.8 20 12 12 8 6
3/4 230 7.4 15 14 14 14 14

1 115 19.2 25 10 10 8 6
1 230 9.6 15 14 14 14 12

1-1/2 230 12.0 15 14 14 14 12

2 230 11.5 15 14 14 14 12

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

Connection Procedure:

Step 1. Connect the ground wire first as shown in Figure 12. The ground

wire must be a solid copper wire at least as large as the power sup­ply wires.

Step 2. There must be a solid metal connection between the pressure

switch and the motor for motor grounding protection. If the pres­sure switch is not connected to the motor, connect the green
ground screw in the switch to the green ground screw under the
motor end cover. Use a solid copper wire at least as large as the
power supply wires.

Step 3. Connect the ground wire to a grounded lead in a service panel, to a

metal underground water pipe, to a metal well casing at least ten
feet (3M) long, or to a ground electrode provided by the power
company or the hydro authority.

Step 4. Connect the power supply wires to the pressure switch as shown in

Figure 12.

Operation 10

PRIMING THE 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.

NEVER run pump against closed discharge, to do so can boil
water inside pump, causing hazardous pressure in unit and possibly scald­ing persons handling pump.

NOTE: Open water system faucets before priming pump for the first time.

Step 1. Remove pressure gauge.

a. Close regulator valve (turn clockwise - see Figure 13).
b. Fill pump and suction pipe with water (Figure 13).
c. Replace pressure gauge, using Teflon tape on thread; tighten

gauge.

IMPORTANT: If a priming tee and plug have been provided 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.)

Step 2. Start Pump:

Pressure should build rapidly to 50 pounds per square inch or more
as ejector and pump prime.

IF NO PRESSURE OR NO WATER, REPEAT Step No. 1 (above) two or three
times to remove entrapped air from the suction pipes.

Step 3. If, after priming pump several times, no water is pumped, check the

following:
a. Suction pipe in the water and has no leaks.

NOTE: Air can leak in even where water won’t leak out. Make
sure all joints are tight.

b. Control valve, check valve, or foot valve installed and operating

correctly.

c. Pump trying to lift water more than 25 feet (shallow well) or

more than rated lift for deep well ejector used (including com­pensation for horizontal offset).

d. Be sure pump is not airlocked. In offset installations, pump suc-

tion 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).

NOTE: For deep well installation, go to Step 4 (Page 11). Shallow well
installations go to Step 6 (Page 11).

Figure 13A: Close Regulator

Figure 13B: Fill Pump with Water

Figure 13D: Adjustor Regulator

Figure 13C: Start Pump

60

40
20

80

100

2361a 0697

2360a 0697

ON

60

40
20

80

100

1030a 0697

Operation 11

Step 4. Once unit has primed and pressure stabilized, slowly open (turn

counterclockwise - Figure 14A) regulator valve until pressure falters
(pressure gauge needle flutters; pump may become noisy - see
Figure 14B). At this point, close (turn clockwise) regulator valve
slightly until pressure stabilizes. This setting provides maximum
flow (Figure 14C).

Step 5. Pump may draw well down far enough at this point to lose its

prime. If so, close regulator valve until pressure is stable throughout
pumping cycle. Close faucets and allow pump to pressurize tank
and shut off.

Step 6. Check system by alternately opening and closing faucets in the sys-

tem. With faucets open , pressure will drop until pump starts; with
faucets closed, pressure will build up until pump shuts off.

Step 7. There are conditions of deep well operation when the regulator

valve may be completely open without any faltering of pressure. In
this case, operate pump with regulator valve open.

HOW TO HANDLE A GASEOUS WELL

In some areas well water contains gases which must be allowed to escape
before the water is used. To deliver gas-free water suspend a pipe, closed at
the bottom and open at the top, so that it surrounds the suction pipe inlet.
(See Figure 15). Since the gases rise in the well casing, the water sucked
down through the pipe and into the suction pump is free of gas. This type
of well must be vented to the outside of any enclosure.

AIR CONTROL IN FLOWING WELLS

Flowing wells or wells with little or no drawdown, could create a special
problem in air control in the operation of your standard tank system. In
such cases, a pre-charged tank (which needs no air control) is recom­mended.

Figure 14A: Open Regulator Valve

Figure 14B:Watch for Pressure Gauge
to Flutter

Figure 14C: Close Regulator Valve
until Pressure Stabilizes

Figure 15: Gas/Air Control in Well

60

40
20

80

100

60

40
20

80
100

60

40

20

80

100

Gases
rise to
surface

Ejector

Pipe strap or
wire to hold
pipe sleeve

Tail
pipe

Foot
valve

Pipe
sleeve

Pipe
cap

2876 0697

Maintenance 12

PUMP DISASSEMBLY/ASSEMBLY

Step 1. Pull disconnect switch. Disconnect power lines from pressure

switch.

Step 2. Remove the two cap screws holding the pump to the flange

adapter. Don’t disturb the piping in the well.
Step 3. Remove the flange adapter gasket and scrape the surfaces clean.
Step 4. Leaving the tubing in place, unscrew and remove the straight

barbed fitting at the pressure switch.
Step 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 16).
Step 6. Turn the pump upside down on the bench and block it. Remove

the four cap screws from the base. With a mallet, tap upward on

the base to loosen it. Lift the base off of the intermediate volute

(see Figure 17).
Step 7. To reduce the chance of dropping the pump onto your foot, lay it

down on the bench; block it so it won’t roll.
Step 8. Hold the motor shaft with pliers or vice grips through the opening

in the pump adapter. Unscrew the impeller nut off the end of the

shaft (see Figure 18).
Step 9. 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 19) to remove it.
Step 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 20).

Do
not mar the sealing surfaces; do not break pieces out of the
adapter or volute – the castings are easily damaged.

Step 11. Remove the intermediate volute and slide the impeller spacer off

of the shaft.

Step 12. Remove the impeller. Don’t disturb the shaft keys if you are only

replacing the seal.

Step 13. Rotate the seal spring retainer cup so that the slot lines up with

the shaft keys; remove the cup and spring.

Step 14. Remove the two cap screws holding the adapter bracket to the

motor.

Step 15. With two screwdrivers on opposite sides of the pump, carefully

pry the pump adapter away from the motor. This will pull 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.

INSTALLATION OF NEW SEAL

Step 1. Clean all gasket surfaces thoroughly before reassembly. Clean the

seal bore cavity in the pump adapter.

Step 2. 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.

Figure 16

Figure 17

Figure 19

Figure 18

Figure 20

Maintenance 13

Step 3. Make sure that the shaft keys are in place on the shaft. If they are

not, squeeze them in place now with slip joint pliers.

Do not tap

them or hit them with a hammer; you could bend the shaft

(see
Figure 21). When the keys are correctly installed, the adapter will
pass over the keys without interference.

Step 4.

Carefully

slide the adapter over the shaft (see Figure 22). Do not
damage the shaft sealing surface; it is highly polished and any
slight scratches or nicks will ruin it.

Step 5. 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.

Step 6. Push the shaft seal and seal spring onto the shaft, after making

sure that the seal faces and shaft are clean.

Take care that the shaft

shoulder does not damage the carbon seal face.

Follow the seal
spring with the spring holder; compress the spring and give the
spring holder a quarter turn to lock it under the first shaft key (see
Figure 23).

Step 7. Slide the first impeller onto the shaft; follow it with the impeller

spacer. Twist the impeller on the shaft to make sure that the shaft
key is still in place and the impeller is locked to the shaft (the
shaft should turn with the impeller).

Step 8. 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.

Step 9. Install the intermediate volute, aligning it with the mark made

before disassembly. Use the long cap screws to check this align­ment.

It cannot be stressed too strongly that all bolt holes and
water passages of all gaskets and volutes MUST line up with each
other, or the pump will not be assembled correctly.

Step 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 still
in place. Hold the motor shaft with slip-joint pliers or vice-grips
and install and tighten the impeller locknut. Tightening the lock
nut automatically spaces the impeller correctly.

Do not overtight-

en.

Step 11. Install the base volute gasket.

Make sure the gasket is right side up
so that the water passage holes line up with the water passages in
the volutes.

Install the base volute, using the alignment marks
made before disassembly. Make sure that the pump discharge will
correctly meet the the piping when the pump is reinstalled.

Step 12. Insert the four base capscrews and tighten evenly (see Figure 24).

These should be easy to install if everything is correctly aligned.

If
not, don’t force them; go back over your work and find and cor­rect the misalignment.

Step 13. Reinstall the pressure switch barb fitting and pressure tube.
Step 14. Reinstall the pump on the adapter flange (use a new gasket) and

reconnect the wiring and grounding. Pump is now ready for oper­ation.

Figure 21

Figure 23

Figure 22

Figure 24

Align
Marks

Bolts should
be easy to
insert.

Make sure
all marks
line up.

Use pliers –

with care –

no hammers.

Troubleshooting 14

* (Note:

Stop pump;

then check prime
before looking for
other causes.
Unscrew

priming
plug and see if water
is in priming hole).

SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION

Motor will not run Disconnect switch is off Be sure switch is on.

Fuse is blown or circuit breaker tripped Replace fuse or reset circuit breaker.
Starting switch is defective DISCONNECT POWER; Replace starting switch.

Wires at motor are loose, Refer to instructions on wiring (Page 8). DISCONNECT POWER; check and
disconnected, or wired incorrectly tighten all wiring.

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.

Pressure switch contacts are dirty DISCONNECT POWER and file contacts with emery board or nail file.

Motor runs hot and Motor is wired incorrectly Refer to instructions on wiring.
overload kicks off

Voltage is too low 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.

Motor runs but no Pump in new installation did In new installation:
water is delivered* not pick up prime through:

1. Improper priming 1. Re-prime according to instructions.

2. Air leaks 2. Check all connections on suction line, AVC, and ejector with
soapy water or shaving cream.

3. Leaking foot valve or check valve 3. Replace foot valve or check valve.

Pump has lost prime through: In installation already in use:

1. Air leaks 1. Check all connections on suction line and shaft seal.

2. Water level below suction pipe inlet 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.

Foot valve or strainer is plugged Clean foot valve or strainer.
Ejector or impeller is plugged Clean ejector or impeller.
Check valve or foot valve is stuck shut Replace check valve or foot valve.
Pipes are frozen Thaw pipes. Bury pipes below frost line. Heat pit or pump house.
Foot valve and/or strainer are Raise foot valve and/or strainer above bottom of water source.

buried in sand or mud Clean foot valve and strainer.

Pump does not Water level in well is lower than A deep well jet will be needed if your well is more than 25’ (7.6M)
deliver water to full estimated depth to water.

capacity

Steel piping (if used) is corroded or Replace with plastic pipe where possible, otherwise with new steel pipe.

(Also check point

limed, causing excess friction

3 immediately above)

Offset piping is too small in size Use larger offset piping.

Pump delivers water but

Pressure switch is out of adjustment or DISCONNECT POWER; adjust or replace pressure switch.
does not shut off or contacts are welded together
pump cycles too

Faucets have been left open Close faucets.
frequently

Venturi, nozzle or impeller is clogged Clean venturi, nozzle or impeller.

Water level in well is lower Check possibility of using a deep well jet pump

than estimated

Standard pressure tank is waterlogged Drain tank to air volume control port. Check AVC for defects. Check

and has no air cushion all connections for air leaks.

Pipes leak Check connections.

Foot valves leak Replace foot valve.

Pressure switch is out of adjustment Adjust or replace pressure switch

Air charge too low in pre-charged tank 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), 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.

Air spurts from faucets Pump is picking up prime When pump has picked up prime, it should pump solid water with no air.

Leak in suction side of pump Suction pipe is sucking air. Check joints for leaks with soapy water.

Well is gaseous Consult factory about installing a sleeve in the well

Intermittent over-pumping of well. Lower foot valve if possible, otherwise restrict pump discharge

(Water drawn down below foot valve.)

Repair Parts 15

1A

9

10

1

3

4

5

6

7

8

2

11

19

16B

16C

14

15

16A

16

16A

15

14

13

12

16B

16C

14

17

18A

18

20

18B

16

20

100

80

60

40

368 1293

Repair Parts – Multi-Stage Jet

MSC-6 MSD-6 MSE-6 MSF-6 MSG-6
Key Part With No. MSC-7 MSD-7 MSE-7 MSF-7 MSG-7
No. Description Kit Used 1/2 HP 3/4 HP 1 HP 1-1/2 HP 2 HP

1 Motor-115/230V Single Phase 1 A300CH A300DH A300EH
1 Motor-230V Single Phase 1 A300FH AE300GH

1A Motor Canopy 1 U18-1300 U18-1300 U18-1300 U18-1355 U18-1355

2 Connector 1 J43-13C J43-13C J43-13C J43-13C J43-13C
3 Locknut - 1/2” 1 U36-112ZP U36-112ZP U36-112ZP U36-112ZP U36-112ZP
4 Pressure Switch 1 U217-1216 U217-1216 U217-1216 U217-204E U217-204E
5 Barbed Fitting - Straight 1 U111-211T U111-211T U111-211T U111-211T U111-211T
6 Switch Tube - 14-1/2” 1 U37-672P U37-672P U37-672P U37-672P U37-672P
7 Pressure Regulator Assembly 1 J212-24E J212-24E J212-24E J212-24E J212-24E
8 Barbed Fitting - Elbow 1 U111-212T U111-212T U111-212T U111-212T U111-212T
9 Adapter (-6 Series) 1 L2-16 L2-16 L2-16 L2-16 L2-16

9 Adapter (-7 Series) 1 L2-16A L2-16A L2-16A L2-16A L2-16A
10 Capscrew - 3/8”-16x1-1/4” Lg. 2 U30-75ZP U30-75ZP U30-75ZP U30-75ZP U30-75ZP
11 Shaft Key OH/SG 2 U65-15SS U65-15SS U65-15SS U65-15SS(3) U65-15SS(3)
12 Shaft Seal (-6 Series) OH/SG 1 U109-99 U109-99 U109-99 U109-99 U109-99
12 Shaft Seal (-7 Series) OH/SG 1

17351-0101A 17351-0101A 17351-0101A 17351-0101A 17351-0101A
13 Spring Holder OH/SG 1 J24-11 J24-11 J24-11 J24-11 J24-11
14 Impeller OH 2 J105-75PA J105-75P J105-76P

J105-74PA(3)

J105-74P(3)
15 Spacer - Impeller (1 or 2 required) – J43-23 J43-23 J43-23 J43-23 J43-23
16 Intermediate Volute w/Wear Rings & Gasket (1) J101-26 J101-26 J101-26 J101-26(2) J101-26(2)

16A Gasket OH/SG (1) J20-11 J20-11 J20-11 J20-11 J20-11
16B Wear Ring OH (1) J23-10 J23-10 J23-10 J23-10 J23-10
16C Wear Ring OH (1) J23-11 J23-11 J23-11 J23-11 J23-11

17 Impeller Stop Nut 1 U36-175D U36-175D U36-175D U36-175D U36-175D
18 Base Volute Complete 1 J101-33 J101-33 J101-33 J101-33A J101-33A

18A Gasket OH/SG (1) J20-11 J20-11 J20-11 J20-11 J20-11
18B Wear Ring OH (1) J23-10 J23-10 J23-10 J23-10 J23-10

19 Pipe Plug - 1/4” NPT (1)

U78-941ZPV U78-941ZPV U78-941ZPV U78-941ZPV U78-941ZPV
20 Capscrew - 3/8”-16x4-1/4” Lg. (4) U30-82ZP U30-82ZP U30-82ZP – –
20 Capscrew - 3/8”-16x6” Lg. (4) – – – U30-81ZP U30-81ZP

SERVICE KITS

Seal and Gasket Kit (SG) 1 PP1650 PP1650 PP1650 PP1650 PP1650
Overhaul Kit (OH) 1 PP1655 PP1656 PP1657 PP1658 PP1659

Repair Parts 16

Key Part J216-21 J216-22 J216-23
No. Description Qty. 2” 2-1/2” 3”

1 Gasket 1 J20-12 J20-12 J20-12
2 Adapter Body 1 J51-10 J51-9 J51-9
3 Seal Ring 1 J21-17 J21-24 J21-21
4 Lower Flange 1 J16-20ZZP J16-30ZZP J16-24ZZP
5 Capscrew,

3/8-16x1-1/2 Lg. 3 U30-76ZP U30-76ZP U30-76ZP

6 Capscrew,

1/2-13x1-1/4” 2 U30-86PS U30-86PS U30-86PS

Key Part J216-26 J216-27
No. Description Qty. 1-1/4x1 1-1/4x1-1/4

1 Gasket 1 J20-12 J20-12
2 Adapter Flange 1 J2-15 –
2 Adapter Flange 1 – J2-17B
3 Capscrew 2 U30-86ZP U30-86ZP

Casing Adapters – (Not included with pump)

Adapter Flange – (Not included with pump)

Item 1-Remove paper
backing form gasket before
applying.

Item 2-Align locating lug on
flange with locating lug on
base volute.

Item 1-Remove paper
backing form gasket before
applying.

Item 2-Align locating lug on
flange with locating lug on
base volute.

376 1293

1

1A

2A

2B

2C

2D

4

5

2E

2F

2

3

6

7

8

9

10

20

100

80

60

40

Pressure Regulator

Key Part
No. Description J212-24 J212-24A

1 Pressure Regulator w/Seat J112-14 J112-14

1A Valve Seat J66-16 J66-16

2 Diaphragm Assembly J220-16B J220-16B
2A Regulator Guide J42-5 J42-5
2B Stem J62-9 J62-9
2C Diaphragm J20-16 J20-16
2D Spring Follower J43-31 J43-31

2E Lock Washer U43-23ZP U43-23ZP
2F Nut 1/4-20 U36-36ZP U36-36ZP

3 Reducer Bushing 1/2x1/8 NPT U78-107DT U78-107DT

4 Pressure Gauge 0-100# U239-3 –

4 Pressure Gauge 0-200# – U239-8

5 Spring J24-13 J24-13

6 Spring Guide J61-5 J61-5

7 Bonnet J52-9 J52-9

8 Capscrew 5/16-18x3/4” Lg. (4) U30-60ZP U30-60ZP

9 Adjusting Screw 5/16-18 U30-69FTZP U30-69FTZP

10 Locknut 5/16-18 U36-205ZP U36-205ZP

1

2

1

2

489 0194

3

6

3

4

377 1293

5