Wayne JCU50 User Manual
Jet Pump Water Systems
Please read and save these instructions. Read carefully before attempting to assemble, install, operate or maintain the product
described. Protect yourself and others by observing all safety information. Failure to comply with instructions could result in personal injury and/or property damage! Retain instructions for future reference.
© 2008 Wayne Water Systems
Description
Jet pumps are single stage domestic
water pumps designed for pumping
potable water in applications where
the water is as much as 100 feet under
ground (deep well pump). A pressure
switch is a standard feature. Deep well
pumps can be mounted to either a
precharged, conventional type or free
standing pressure tank.
Unpacking
After unpacking the jet pump, carefully
inspect for any damage that may have
occurred during transit. Check for
loose, missing or damaged parts.
Safety Guidelines
This manual contains information that
is very important to know and understand. This information is provided for
SAFETY and to PREVENT EQUIPMENT
PROBLEMS. To help recognize this
information, observe the following
symbols.
Danger indicates
an imminently hazardous situation which, if not avoided,
will result in death or serious injury.
Warning indicates
a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
Caution indicates a
potentially hazardous situation which, if not avoided,
may result in minor or moderate injury.
Notice indicates
important information, that if not followed, may cause
damage to equipment.
Operating Instructions and Parts Manual JCU50
General Safety
Information
1. Read the instruction manual included
with the product carefully. Be thoroughly familiar with the controls and
the proper use of the equipment.
2. Know the pump application, limitations and potential hazards.
Do not use to pump
flammable or explosive fluids such as gasoline, fuel oil,
kerosene, etc. Do not use in explosive
atmospheres. Pump should only be used
with liquids compatible with pump component materials. Failure to follow this
warning can result in personal injury
and/or property damage.
Disconnect power
and release all pressure from the system before attempting
to install, service, relocate or perform any
maintenance. Lock the power disconnect
in the open position. Tag the power disconnect to prevent unexpected application of power.
Install a screen
around the inlet
pipe to prevent entrapment of swimmers.
3. Drain all liquids from the system
before servicing.
4. Secure the discharge line before
starting the pump. An unsecured discharge line will whip and possibly
cause personal injury and/or property
damage.
5. Check hoses for weak or worn condi-
tion before each use. Make certain
all connections are secure.
6. Periodically inspect pump and system
components. Perform routine maintenance as required (See
Maintenance).
7. Personal Safety:
a. Wear safety glasses at all times
when working with pumps.
b. Keep work area clean, unclut-
tered and properly lighted -
340702-001 7/08
replace all unused tools and
equipment.
c. Keep visitors at a safe distance
from work area.
d. Make the workshop child
proof: use padlocks, master
switches and remove starter
keys.
8. Do not pump chemicals or corrosive
liquids. Pumping these liquids
shortens the life of the pumps seals
and moving parts and will void the
warranty.
9. When installing pump, cover the
well to prevent foreign matter
from falling into well, contaminating the water and damaging internal mechanical pumping components.
10. Always test the water from the
well for purity before use. Check
with local health department for
test procedure.
11. Complete pump and piping system
MUST be protected against below
freezing temperature. Freezing
temperatures could cause severe
damage and void the warranty.
12. Do not run the pump dry or damage
will occur and will void warranty.
Risk of electrical
shock. This pump is
designed for indoor installation only.
All wiring should be
performed by a
licensed or certified electrician.
13. For maximum safety, the unit
should be connected to a grounded
circuit equipped with a ground
fault interrupter device.
14. Before installing the pump, have
the electrical outlet checked by a
licensed or certified electrician to
make sure the outlet is properly
grounded.
See Warranty on page 12 for important information about commercial use of this product.
REMINDER: Keep your dated proof of purchase for warranty purposes! Attach it to this manual or file it for safekeeping.
For parts, product & service information
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and 3-pole receptacles that accept
the equipment plug.
22. Use wire of adequate size to minimize voltage drop at the motor.
Do not handle
pump or pump
motor with wet hands, when standing
on a wet or damp surface or when
standing in water. Fatal electrical
shock could occur.
Pump motor is
equipped with an
automatic resetting thermal protector and
may restart unexpectedly. Protector tripping is an indication of motor overloading
because of operating pump at low heads
(low discharge restriction), excessively
high or low voltage, inadequate wiring,
incorrect motor connections or defective
motor or pump.
Pre-Installation
WATER SUPPLIES
The water supplies illustrated in Figure
15 are possible sources for water.
These water supplies can be divided
into two categories:
SURFACE WATER
Water from a lake, stream, pond and
cistern. This water is usually not fit for
human consumption, but may be suitable for washing, irrigation or other
household uses.
GROUND WATER
Water found in the water bearing stra-
tum at various levels beneath the earth.
Of all the fresh water found on earth
only 3 percent is found on the surface
and 97 percent is underground.
TANKS - CONVENTIONAL STORAGE
The function of the tank is to store a
quantity of water under pressure.
When full, the tank contains approximately 2/3 water and 1/3 compressed
air. The compressed air forces the water
out of the tank when a faucet is
2
Operating Instructions and Parts Manual
General Safety
Information (Cont’d)
15.Make sure the line voltage and frequency of electrical current supply
agrees with the motor wiring.
16. Do not attempt repairs to the electric motor. All repairs to the motor
must be completed at a licensed or
certified electrical motor repair
shop.
Do not touch an
operating motor.
Modern motors are designed to operate at
high temperatures.
17. Avoid kinking electrical cord and
protect electrical cord from sharp
objects, hot surfaces, oil and chemicals. Replace or repair damaged or
worn cords immediately.
18. Keep fingers and foreign objects
away from ventilation and other
openings. Do not insert any objects
into the motor.
Risk of electric
shock! Never connect the green (or green and yellow) wire
to a live terminal!
19. To reduce the risk of electrical
shock, the pump should be plugged
directly into a properly installed and
grounded 3-prong grounding type
receptacle, as shown in Figure 1.
The green (or green and yellow)
conductor in the cord is the grounding wire. The motor must be securely and adequately grounded for
protection against shock.
20. Where a 2-prong is encountered,
replace the plug with a properly
grounded 3-prong receptacle in
accordance with the National
Electrical Code, local codes and ordinances. To ensure a proper ground,
the grounding means must be tested by a licensed or certified electrician.
21. Use only 3-wire extension cords that
have a 3-prong, ground type plug,
opened. An air volume control automatically replaces air lost or absorbed
into the water. The usable water, or
drawdown capacity, of the tank is
approximately 1/6 of the tanks total
volume when operated on a “20-40”
pressure setting (Figure 2).
TANKS - PRECHARGED STORAGE
A precharged storage tank has a flexible
bladder or diaphragm that acts as a barrier
between the compressed air and water.
This barrier prevents the air from being
absorbed into the water and allows the
water to be acted on by compressed air at
initially higher than atmospheric pressures
(precharged). More usable water is provided than with a conventional type tank.
Precharged tanks are specified in terms of
a conventional tank. For example, a 20 gallon precharged tank will have the same
usable water or drawdown capacity as a
40 gallon conventional tank, but the tank
is smaller in size (Figure 2).
PRESSURE SWITCH
The pressure switch provides for automatic operation. The pump starts when
pressure drops to a cut-in setting. The
pump stops when pressure reaches a
cut-out setting.
JCU50
Air Volume
Control
Type Required
Well X Precharged No
PCA Precharged No
12P & 30 P Horizontal Conventional Yes
FX Horizontal Precharged No
CHART 1 - JET PUMP/TANK ASSEMBLIES
Air Volume
Control
Bladder
Conventional
Tank
Precharged
Tank
Figure 2 - Conventional & Precharged
Storage Tanks
Grounded Outlet
Grounded
Pin
Figure 1
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3
Pre-Installation (Cont’d)
PACKAGE SYSTEMS
There are four jet pump/tank assemblies sold as packages (Chart 1).
WELLS
A new well should be pumped clear of
sand before installing the pump. Sand
will damage the pumping parts and
seal. The drawdown level of the well
should not exceed the maximum rated
depth for the pump. The capacity of
the pump will be reduced and a loss of
prime may occur.
Installation
LOCATION
Select a location as close to the water
supply as possible.
Be sure to comply with any state or
local codes regarding the placement of
the pump. The equipment must be protected from the elements. A basement,
frost proof pit or heated pump house
are good locations. Make sure the
pump has proper ventilation. The temperature surrounding the pump is not
to exceed 100° F (40°C) or nuisance
tripping of the motor overload may
occur.
PIPING
Piping may be copper, steel, rigid PVC
plastic or flexible polyethylene plastic.
Flexible pipe is not
recommended on
suction pipe (inlet pipe).
The pipe must be clean and free of rust
or scale. Use a pipe joint compound on
the male threads of the metal pipe.
Teflon®tape should be used with plastic threads. All connections must be air
tight to insure normal operation.
Slope all inlet piping upwards towards
the pump to prevent trapping air.
Unions or hose couplings can be
installed near pump to facilitate
removal for servicing or storage. A rubber hose installed between the water
system and the house piping will
reduce the noise transmitted to the
house.
Plastic pipe can be used on all installations except 2” deep well jet. The 2”
deep well jet requires 11/4” galvanized
steel pipe and special machined couplings (113/16” O.D.).
The galvanized steel pipe and the couplings restrict the flow of return water
back to the jet unless the couplings are
machined.
PIPE SIZES
Long horizontal pipe runs and an
abundance of fittings and couplers
decrease water pressure due to friction
loss. See Chart 2 to determine the proper pipe size.
SHALLOW WELL INSTALLATION
A shallow well jet assembly can be used
with the deep well pump when the
pump is located 25 feet vertically of the
water level. Shallow well installations
have only one pipe between the pump
and water supply (Figure 3).
DRILLED WELL (FIGURE 15)
1. Install a foot valve on the first section of pipe (Figure 3, Illustration
A).
2. Lower the pipe into the well.
3. Add pipe until the foot valve is 5
feet below the lowest anticipated
water level.
The foot valve
should be at least
18” from the bottom of the well or
sand or sediment could be drawn into
the system.
4. After proper depth is reached,
install a well seal or pitless adapter
to support pipe and prevent surface
water and other contaminants from
entering well.
Operating Instructions and Parts Manual
JCU50
Horizontal Distance
Pump Pump (Feet)
Model Opening 0-25 26-100 100-300
Deep Well Inlet: Suction 11/4” 11/2” 2”
Inlet: Drive 1” 11/4” 11/2”
Outlet 3/4” 1” 11/4”
CHART 2 - PIPE SIZING
Illustration B
Illustration C
Packer
Type
Foot
Valve
Drive
Point
To Pump
Incline
Check
Valve
Drive
Point
To Pump
Figure 3
To Pump
Illustration A
Well
Seal
Well
Casing
Foot
Valve
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included) to the jet body. A 11/4”
coupling is required to connect the
larger pipe to the jet assembly.
2. Connect the 1” pipe threads into
the smaller opening in the jet body.
3. Lower the jet into the well. Add
pipe as needed. Be sure to use pipe
joint compound on all male threads.
4. Position the jet 10 - 20 feet below
the lowest anticipated water level,
but never closer than 5 feet from
the bottom of the well, if possible.
5. Install a well seal to support the
pipe and prevent surface water and
other contaminants from entering
the well.
6. Install the horizontal pipe from the
well to the pump. Piping from the
vertical well pipe to the pump
should never be smaller than the
well pipes.
7. Slope both pipes upward toward
the pump to prevent trapping air. If
the horizontal distance exceeds 25
feet, see Chart 2 for the recommended pipe sizes.
DUG WELL, CISTERN, LAKE AND SPRING
WITH TWO PIPE JET (FIGURE 15)
1. Install a 11/4” foot valve (not included) to the jet body. A 11/4” coupling
is required to connect the larger
pipe to the jet assembly.
2. Connect the 1” pipe threads into
the smaller opening in the jet body.
3. Lower the jet into the water below
the lowest anticipated water level,
but never closer than 18” from the
bottom. Sand or debris may be
drawn into the system if the jet is
too close to the bottom.
4. Provide protection for the jet and
pipes against damage from boats or
swimmers if a lake is used for the
water supply.
Install a screen
around the inlet
pipe
to prevent the entrapment of swimmers.
5. Slope the horizontal pipes upward
toward the pump to prevent trap-
4
ping air. If horizontal distance
exceeds 25 feet, see Chart 2 for recommended pipe sizes.
DRILLED WELL (2”) WITH SINGLE PIPE
PACKER (FIGURES 15 AND 5)
NOTE: Single pipe packer jets rely on
the space between single pipe and
inside of well casing for return water
to operate jet. Two inch installations
must use 11/4” galvanized steel pipe
with special turned couplings (113/16”
O.D.) to avoid restricting flow of return
water back to jet.
1. Assemble the foot valve and packer
to the jet body.
2. Lubricate the rubber cups with
petroleum jelly.
3. Attach the first section of pipe and
lower jet into well.
4. Add pipe until the jet is positioned
5 - 15 feet below the lowest anticipated water level. The jet should
never be closer than 5 feet from the
bottom of the well or sand and sediment may be drawn into the system.
5. With the jet in position, fill the
pipes with water to make sure the
rubber cups are sealed against
inside of the well casing. It may be
necessary to move the jet up and
down to seat the cups.
6. Install the casing adapter and the
horizontal pipes.
7. Slope both pipes upward toward
the pump to eliminate trapping air.
If the horizontal distance exceeds
25 feet, see Chart 2 for the recommended pipe sizes.
DEEP WELL PUMP WITH HORIZONTAL
AND VERTICAL STORAGE TANK
(FIGURES 6 AND 7)
1. Install the air volume control on the
tank as shown.
2. Connect the copper tube from the
air volume control to the 1/8” NPT
opening directly above the 11/4”
opening on the front of the pump.
Installation (Cont’d)
5. Slope the horizontal pipe upward
toward the pump to eliminate trapping air. Sloping the pipe will also
aid in priming the pump.
DRIVEN WELL (FIGURE 15)
1. Drive the point several feet below
the water table.
NOTE: A packer type foot valve can be
installed in the well (Figure 3,
Illustration B). This type of foot valve
allows the well to be filled with water
when priming and makes the inlet pipe
much easier to test for leaks. Follow
the manufacturer’s instructions when
installing the packer type foot valve.
As an alternative, an in-line check valve
can be used with a driven well (Figure
3, Illustration C). The pipe between the
check valve and the water level will
always be under a vacuum.
Leaking joints or couplings will allow
air to leak into the pipe and cause
abnormal pump operation. Make sure
to use pipe joint compound on all male
pipe threads.
DUG WELL, CISTERN, LAKE AND SPRING
INSTALLATION (FIGURE 15)
1. Install a foot valve on inlet pipe and
lower into water.
The foot valve
should be at least
18” from the bottom of the well or
sand or sediment could be drawn into
the system.
NOTE: When a lake is used as a water
supply, make sure the inlet pipe is deep
enough to be submerged at all times.
Protect the pipe from damage from
swimmers and boats.
Slope the horizontal piping upward
toward the pump to prevent trapping
air. The pipe must be removed during
winter months or protected against
freezing.
Protect the pipe from damage from
swimmers and boats.
Install a screen
around the inlet
pipe to prevent the entrapment of swimmers.
DEEP WELL INSTALLATION
DRILLED WELL (4” OR LARGER) WITH
TWO PIPE JET (FIGURES 15 AND 4)
1. Assemble a 11/4” foot valve (not
Operating Instructions and Parts Manual
JCU50
Jet Body
11/4” Pipe
Foot Valve
Figure 4 - Two Pipe Jet
1”
Pipe
11/4” Pipe
Foot Valve
Figure 5 - Single Pipe Jet
Packer
Cups
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CONVERTING THE DEEP WELL PUMP TO
SHALLOW WELL OPERATION (FIGURE 9)
For shallow wells (25 feet or less), a
bolt-on shallow well jet is available as
an accessory for deep well pumps. The
jet attaches to the front of the pump
with the two bolts provided and converts the deep well pump into a shallow well pump. The shallow well jet has
a 1” NPT inlet and a 1/8” NPT opening
for an air volume control. For optimum
performance, an incline check valve on
the inlet side of the shallow well jet is
recommended
Electrical
Risk of electrical
shock. This pump is
designed for indoor installation only.
The voltage of power supply must
match the voltage of the pump. All
above ground well pumps except
5
Operating Instructions and Parts Manual
JCU50
Pressure
Switch
Figure 8 - Precharged Storage Tank
Pressure
Switch
Figure 6 - Horizontal Tank
Figure 7 - Vertical Tank
Air
Volume
Control
Tubing
Air
Volume
Control
Air Volume Control
Hose
Coupling
Air
Volume
Control
Tubing
Distance In Feet
From Meter To Motor
Dual 0 51 101 201
Element To To To To
Fuse 50 100 200 300
HP Volt 250V Wire Size
115 15 14 14 12 10
230 10 14 14 14 14
115 15 14 14 10 8
230 10 14 14 14 14
115 20 12 12 10 8
230 10 14 14 14 14
CHART 3 - RECOMMENDED FUSE & WIRING DATA - 60 HZ MOTORS
1/2
3/4
1
To Air Volume
Control
Figure 9 - Shallow Well Jet
Jet
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Installation (Cont’d)
3. Install a valve and isolating hose
between the system and the house
plumbing to aid in pump removal for
servicing and for reducing noise transmitted through the house piping.
4. Provide a hose bib (faucet) at the
lowest point in the system to drain
for service or storage.
DEEP WELL PUMP WITH PRECHARGED
STORAGE TANK (FIGURE 8)
1. Check tank precharge using a tire
pressure gauge. The precharge pressure should be 28 - 30 psi on 1/2, 3/4
and 1 HP models.
2. Check the pressure with the power
off, faucets open and no water
flowing (zero water pressure).
3. Install a valve and isolator hose
between the system and the house
plumbing to aid in pump removal
for servicing and for reducing noise
transmitted to the house through
the piping.
4. Provide a hose bib (faucet) at the
lowest point in the system to drain
for service or storage.
SWS50BOOST have dual voltage motors
preset at the factory to 230 volts. The
motors can be converted to 115 volts by
turning the voltage selector to the
desired voltage (See Figure 10). Use a
needle nose pliers to pull the selector
out approximately 1/4”, rotate and
then reinsert in correct position.
Select the proper size wire and fuse
(Chart 3). Time delay fuses are recommended over standard fuses for motor
circuit protection. All pump motors
have built-in automatic overload protection that will prevent damage to the
motor due to overheating.
Do not connect to
electric power supply until unit is permanently grounded.
Connect ground wire to approved ground
then connect terminal provided.
A metal underground water pipe or
well casing at least 10 feet long makes
the best ground electrode. If plastic
pipe or insulated fittings are used, run
a wire directly to the metal well casing
or use a ground electrode furnished by
the power company.
Figure 10 - Voltage Selector
Electrical (Cont.)
There is only one proper ground terminal on the unit. The terminal(s) is located under the pressure switch cover, is
painted green and is identified as GRD.
The ground connection must be made
at this terminal (Figure 11). The ground
conductor must not be smaller than
the circuit conductors supplying the
motor.
Disconnect power
and release all pres-
sure from the system before attempting
to install, service, relocate or perform any
maintenance.
Operation
PRIMING THE SHALLOW WELL PUMP
To prevent damage
to the pump, do not
start motor until pump has been filled
with water.
1. Remove prime plug.
2. Fill pump and piping completely
full of water.
3. Replace the prime plug.
4. Open a faucet to vent the system.
5. Start the motor. Water will pump in
a few minutes. If pump fails to
prime in 5 minutes, stop motor and
refill pump with water. Priming
time is proportional to the amount
of air in inlet pipe.
6. Let the system operate for several
minutes to flush all pipes.
7. Close faucet and allow pump to
build pressure in tank. When the
pressure reaches the cut-out setting, the motor will stop.
1. Remove drain plug and prime plug
to vent the system.
2. Drain all piping to a point below
the freeze line.
DRAINING THE TANK
Conventional tanks can be drained by
opening an outlet at the lowest point
in the system. Remove plug or the air
volume control to vent the tank.
Precharged tanks force virtually all the
water from the tank when system pressure is released. No draining is necessary.
RESTARTING PUMP
If the pump has been serviced, drained
or has not been used for some time, be
sure there is water in the pump housing (volute) and the piping to the well.
There must be water in the pump housing (volute) at all times when the pump
is running to avoid internal damage of
seal members (See Priming the Shallow
Well or Priming the Deep Well
Sections).
WATERLOGGED TANKS:
CONVENTIONAL
When a tank system has an inadequate
ratio of air and water, the pump will
start and stop often and eradically.
1. Disconnect the power to the pump.
2. Open the lowest faucet in the system to release all pressurized water
in the system.
3. Prime the pump (See Priming the
Shallow Well or Priming the Deep
Well Sections).
4. Reconnect the power to the pump.
NOTE: As the pump refills the tank with
water, the air volume control supplies
the tank with the correct air to water
ratio for the system to operate. If the air
volume control is good, the pump will
shut off at the desired cut-off and will be
adjusted correctly.
WATERLOGGED TANKS:
PRECHARGED
If a precharged tank becomes waterlogged, the bladder is normally leaking
or broken.
1. Test the tank by depressing the air
valve. The air valve will expel water if
the bladder is broken.
2. Replace the tank.
6
JCU50
Operating Instructions and Parts Manual
The system is now in operation and will
automatically cycle on demand.
PRIMING THE DEEP WELL PUMP
To prevent damage
t
o the pump, do not
start motor until pump has been filled
with water.
NOTE: For deep well priming, a control
valve (not included) must be installed
on or near the pump discharge. A ball
or globe valve will work for this application.
1. Remove prime plug.
2. Fill pump and piping completely full
of water.
3. Replace the prime plug.
4. Close the control valve and open a
nearby faucet.
5. Start the motor. The pressure inside
the pump body will build almost
immediately as the pump, jet and
piping become completely filled
with water.
6. Slowly open the control valve.
Water will begin to flow. Continue
to open the control valve until maximum flow is achieved. Opening the
valve too far will cause the water to
stop flowing.
7. Adjust the valve until there is a
steady flow of water. The valve
should be opened as much as possible without losing pressure.
8. Let the system operate for several
minutes to flush all piping.
9. Close the faucets and allow the
pump to build pressure in the tank.
When the pressure reaches the cutout setting, the motor will stop.
The system is now in operation and will
automatically cycle upon demand.
Maintenance
Disconnect power
and release all pressure from the system before attempting
to install, service, relocate or perform any
maintenance. Lock the power disconnect
in the open position. Tag the power disconnect to prevent unexpected application of power.
Protect the pump
from freezing dur-
ing winter conditions.
DRAINING THE PUMP
Drain openings are provided on all
models. To drain the pump:
Figure 11 - Electrical Connections
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Motor
Motor
Line
Line
Ground
be done to ensure proper draining
and priming.
3. Place rotating shaft seal member in
position on impeller and press into
place. Take care not to press against
polished seal surface.
4. Position impeller on shaft and tighten
securely (Figure 15).
5. Secure diffuser to seal plate using the
two cap screws. Be sure the screws
are orientated on a horizontal line as
described in Step 2.
6. Carefully position pump housing
(volute) gasket over the diffuser onto
the seal plate. In all convertible applications the seal ring must also be
positioned on the diffuser. In all shallow well applications care must be
taken that the o-ring is clean and
properly positioned on the venturi.
Cleaning and positioning makes a
good seal inside the diffuser when
assembled.
7. Assemble the pump housing (volute)
to the motor using the four cap
screws. Be sure the pump housing
(volute) gasket is positioned correctly
and tighten the screws securely.
NOTE: Shaft must rotate freely and
motor end cap should be secured
before operation.
Maintenance (Cont’d)
NOTE: Once a bladder is leaking or bro-
ken, the bladder cannot be repaired. The
tank must be replaced.
LUBRICATION
The bearing used in the pumps are lifetime lubricated at the factory and require
no additional lubrication.
PRECHARGED TANK
Some air is lost through the bladder in
any tank. To prevent tank failure, check
the tank precharge on a yearly basis.
1. Open a faucet nearest the tank and
allow all water to drain from the
tank.
2. Measure the tank precharge at the
valve stem using a tire gauge.
3. If necessary, adjust the precharge
with an air pump 28 - 30 psi on 1/2,
3/4 and 1 HP pumps.
REMOVING OLD SHAFT SEAL
Turn disconnect
switch to “off” posi-
tion.
1. Open a faucet nearest the tank and
allow all water to drain from the
tank.
2. Remove the four cap screws holding
the pump housing (volute) to the
motor (Figure 12).
3. Separate the pump housing (volute)
from the motor to expose the diffuser and the seal plate.
4. Remove the two cap screws and diffuser from the seal plate to expose
the impeller.
5. Remove the small end cap on the
end of the motor opposite the
impeller.
6. With a large screwdriver or
adjustable wrench, keep the shaft
from rotating and remove the
impeller with hand (standard right
7
JCU50
Operating Instructions and Parts Manual
Seal
Plate
Seal
Seat
Figure 15 - Motor Shaft
hand thread). Be sure to hold onto
the cast iron seal plate when removing the impeller from the shaft.
7. Remove the seal plate.
8. Pry the rotating shaft seal member
from the impeller (Figure 13).
9. Push or pry the ceramic seat free
from the seal plate (Figure 13).
10. Remove loose particles from
impeller hub and seal plate.
INSTALLING NEW SHAFT SEAL
Before handling
shaft seal parts
wipe hands clean. Dirt or grease can
damage the seal.
1. Wet the inside of the seal cavity on
seal plate and the rubber cup
enclosing the new ceramic seat with
cooking oil. Be careful not to
scratch the ceramic surface of the
seal seat and push seat enclosed in
rubber into seal cavity on seal plate.
Use a cardboard washer to protect
polished surface when pushing
against ceramic seat with any
object. Be sure to remove cardboard
washer.
2. Carefully slip seal plate over shaft so
as not to disturb seal position in seal
plate. The seal plate must be orientated during assembly so that the two
holes are on a horizontal line across
the motor shaft and the (4) locating
pins on the back of the seal plate line
up with the tabs on the motor housing (Figure 14). This placement should
Figure 14 - Seal Plate Replacement
Screw Holes
Motor
Shaft
Motor
Impeller
Seal
Plate
Seal Facing Must
Be Clean For
Proper Seal
Figure 13 - Removing Shaft Seal &
Ceramic Seat
Seal
Plate
Ceramic
Seat
Rotating
Shaft Seal
Member
Rubber
Seat Ring
Impeller
Machine
Screws
Figure 12 - Convertible Well Pump
Seal
Plate
Diffuser
Pump
Housing
(Volute)
Drain Plug
(not shown)
Cap
Screw
Cap
Screw
Impeller
Motor
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Operating Instructions and Parts Manual
JCU50
8
Water Supplies
Figure 15 - Water Supplies
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9
JCU50
Operating Instructions and Parts Manual
Symptom Possible Cause(s) Corrective Action
Troubleshooting Chart
Pump will not run
Motor hums but will not run
Overload trips
Pump runs but delivers little or no
water
Pump starts and stops too
of ten
1. Power off
2. Blown fuse or tripped breaker
3. Faulty pressure switch
4. Motor overload tripped
1. Low line voltage
2. Wiring too small
3. Damage or misalignment causing rotating
parts to bind
1. Incorrect line voltage
2. Damage or misalignment causing rotating
parts to bind
3. High surrounding temperature
4. Rapid cycling
1. Water level below pump intake
2. Control valve open too far (deep well)
3. Discharge not vented while priming
4. Leaking in piping on well side of pump
5. Well screen or inlet strainer clogged
6. Clogged nozzle (deep well)
7. Air volume control diaphragm ruptured
8. Foot valve may be clogged or stuck closed
9. Pump not fully primed
10. Control valve completely closed (deep well)
11. Water level below maximum lift spec i fi ca tion
12. Undersized piping
13. Gaseous well
14. Distorted venturi
15. Incorrect jet for application
16. Undersized pump
17. Pump cavitates, sounds like pumping gravel
1. Water logged tank (conventional tank)
2. Air volume control tubing kinked or clogged
3. Air volume control tubing connected to wrong
opening on pump
4. Incorrect tank precharged (precharged tank)
5. Ruptured diaphragm/bladder (precharged tank)
6. Leak in house piping
7. Foot valve or check valve stuck open
8. Motor overload tripping
9. Improperly adjusted pressure switch
1. Turn power on or call power com pa ny
2. Replace fuse or reset circuit break er
3. Replace switch
4. Let cool. Overload will au to mat i cal ly re set
1. Rewire. See Chart 3
2. Rewire. See Chart 3
3. Replace or take to service shop for re pair
1. Rewire. See Chart 3
2. Take to motor repair shop or locate
and repair mechanical binding
3. Provide a shaded, well-ventilated area
for pump
4. Pump starts and stops too often sec tion
1. Lower suction pipe further into well
2. Repeat priming procedure
3. Open faucet, repeat priming pro ce dure
4. Repair piping as needed
5. Clean or replace as necessary
6. Pull jet and clear obstruction
7. Repair or replace air volume control
8. Clean or replace as needed
9. Continue priming, paus ing ev ery 5
min utes to cool pump body. Refill
pump as need ed
10. Adjust control valve per deep well
prim ing procedure
11. Select applicable pump and/or jet as sem bly
12. Replace as needed
13. Install baffle on pump intake to pre vent gas
from entering system
14. Inspect and replace
15. Purchase a jet matched to your sys tem
when replacing another brand pump
16. Increase horsepower of pump
17. Increase suction plumbing diameter or
decrease pipe friction
1. Replace tank or air volume control
2. Clean or replace as needed
3. Move to correct pump opening
4. Add or release air as needed
5. Replace tank
6. Locate and repair leak
7. Remove and replace
8. See overload trips section
9. Readjust or replace switch
* All rewiring and motor repair must be done by licensed or certified professionals
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Operating Instructions and Parts Manual
JCU50
10
For Replacement Parts, call 1-800-237-0987
Please provide following information:
- Model number
- Serial number (if any)
- Part description and number as shown in parts list
1
2
3
4
9
5
6
7
Address parts correspondence to:
Wayne Water Systems
101 Production Drive
Harrison, OH 45030 U.S.A.
8
10
13
12
1 Motor 32059-001 1
2 Screw 16636-002 4
3 Seal plate 4372-001 1
4 l Square ring rubber gasket 17150-001 1
5 l Shaft seal assembly 56393 1
6 Impeller 23285-021 1
7 Diffuser 17148-021 1
8 Screw 67007-001 2
9 l Rubber seal ring 17149-001 1
10 Volute 41039-001 1
11 Pipe plug - 1/8” (not shown) 15766-002 2
12 Base 23029-021 1
13 Pressure switch 30010-021 1
l Repair kit (includes #4, 5 & 9) 56874-001 1
Ref.
No. Description JCU50-1/2 HP Qty
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11
JCU50
Operating Instructions and Parts Manual
Model Motor Suction Discharge Pressure psi
No HP Lift (Feet) 20 30 40 50
Output in Gallons Per Hour (GPH)
5 910 850 590 366
10 780 720 520 324
JCU50 1/2 15 690 660 480 270
20 580 580 410 228
25 390 390 325 174
Performance
Output in Gallons Per Hour (GPH)
2” JCU50 56319 620 590 500
JCU50 55462 400 335 260
JCU50 56324 900 750
4” JCU50 56317 690 580 540 390
JCU50 55465 415 335 275 210
Pump Jet
Jet Model Assembly Vertical Distance to Pumping Level
Diameter No. No. 30’ 40’ 50’ 60’ 70’ 80’ 90’ 100’
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