GP K2 Pumps WPD07502K User manual

Model: WPD07502K
WPD07501K
WPD10001K
OWNER’S MANUAL
CONVERTIBLE JET PUMP
Questions, problems, missing parts? Before returning to the store call
K2 Customer Service 8 a.m. - 6 p.m., EST, Monday-Friday
1-844-242-2475
www.K2pumps.com
Copyright © 2020, GP Enterprises Co., Ltd. K2Man-03 (Rev. 5/06/20)
WPD07502K
WPD07501K/ WPD10001K
4in. inside diameter or larger wells
Ejectors included for deep well applications

2 For Professional Technical Support call 1-844-242-2475
PERFORMANCE
Model No.
HP
GPM of Water @Total Discharge Pressure of 40 psi
Max.
Pressure
shutoff
Voltage
Pressure
switch
0
ft.
10
ft.
20
ft.
30
ft.
40
ft.
50
ft.
60
ft.
70
ft.
80
ft.
90
ft.
100
ft.
110
ft.
ON
OFF
WPD07501K
/WPD07502K
3/4
20
16.3
12.1
6.7
6.3
5.1
4.0
3.0
2.5
1.8
-
-
70PSI
230/115
30
50
WPD10001K
1
24
19.4
13.7
9
8.0
6.5
5.1
4.6
4.4
2.9
2
1.5
70PSI
230/115
30
50
SAFETY INSTRUCTIONS
1. Pump clear water ONLY with this pump. Do not pump flammable or explosive liquids such as oil, gasoline,
kerosene, ethanol, etc. Do not use in the presence of flammable or explosive vapors. Using this pump with or near
flammable liquids can cause an explosion or fire, resulting in property damage, serious personal injury, and/or
death.
2. ALWAYS disconnect the power to the pump before servicing.
3. Do not touch the motor housing during operation. The motor is designed to operate at high temperatures. Do not
disassemble the motor housing.
4. Do not handle the pump or pump motor with wet hands or when standing on a wet or damp surface, or in water.
5. Wear safety goggles at all times when working with pumps.
6. This is a dual voltage 115/230V pump. For model WPD07501K/WPD10001K, VOLTAGE SELECTOR INSIDE
PRESET TO 230V.To change voltage to 115V, please open the terminal cover and set the switch to the proper
voltage. For model WPD07502K, pump will auto select proper voltage. All wiring should be performed by a qualified
electrician.
7. Protect the electrical cord from sharp objects, hot surfaces, oil, and chemicals. Avoid kinking the cord. Do not use
damaged or worn cords.
8. Ensure the electrical power supply is adequate for the requirements of the pump.
9. Failure to comply with the instruction and designed operation of this unit may void the warranty. ATTEMPTING TO
USE A DAMAGED PUMP can result in property damage, serious personal injury, and/or death.
10. The pump should be connected to a grounded circuit equipped with a grounded fault interrupter device (GFCI).
11. Know the pump and its applications, limitations, and potential hazards.
12. Secure the pump to a solid base.
13. Periodically inspect the pump and system components. Disconnect the pump from the power supply before
inspecting.
14. Follow all local electrical and safety codes, along with the National Electrical Code (NEC). In addition, all
Occupational Safety and Health Administration (OSHA) guidelines must be followed.
15. The motor of this pump has a thermal protector that will trip if the motor becomes too hot. The protector will reset
itself once the motor cools down and an acceptable temperature has been reached. The pump may start
unexpectedly if it is plugged in.
16. This pump is made of high-strength, corrosion-resistant materials. It will provide trouble-free service for a long time
when properly installed, maintained, and used. However, inadequate electrical power to the pump, dirt, or debris
may cause the pump to fail. Please carefully read the manual and follow the instructions regarding common pump
problems and remedies.
17. Keep fingers and foreign objects away from ventilation and other openings. Do NOT insert any objects into the
motor.
CAUTION: Do not touch an operating motor. Modern motors are designed to operate at high temperatures. To
avoid burns when servicing the 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.
Periodically inspect the pump and system components.
Wear safety glasses at all times when working on pumps.
Keep the work area clean, uncluttered and properly lighted; store properly all unused tools and equipment.
Keep visitors at a safe distance from the work areas.

For Professional Technical Support call 1-844-242-2475 3
WARNING: This pump is designed for indoor installation only. Failure to install indoors will sidnificantly
increase the risk of injury or death from electrical shock.
PRE-INSTALLATION
APPLICATION
This unit is a convertible jet pump designed for pumping water where the water level is up to 90ft for 3/4HP or 110
ft. for 1HP. For wells 25 ft. or less in depth, shallow well installations should be adapted. The shallow well installations
have only one single pipe between the pump and well water. A shallow well jet pump has the nozzle & venturi of the jet
system built into the nose of the pump.
For wells 25 ft. to 110 ft. in depth, deep well installation should be adapted. In this type of setup, the nozzle &
venturi are put into an ejector package or “jet kit” that gets placed down in the well. There are two pipes going to
well. One pipe pulls the water up (suction) while the other pipe pushes some water down (drive) to circulate water
through the nozzle and venturi. Water moving through that nozzle & venturi makes a pressure differential that
helps bring the water up to the pump.
A pressure switch pre-set at 30 psi “on”/ 50 psi “off” has been installed on the pump. The pressure switch will
automatically turn the pump on and off based on the system pressure.
TOOLS REQUIRED
SPECIFICATIONS
POWER SUPPLY
115V/230V, 60 HZ., 20/15 Amp Circuit (3/4HP).
25/15 Amp Circuit (1HP)
LIQUID TEMP. RANGE
32°F to 95°F (0°- 35°C)
DISCHARGE SIZE
1 in. FNPT
SUCTION SIZE
1-1/4 in. FNPT
SHALLOW WELL WATER LEVEL
25 ft.
DEEP WELL WATER LEVEL
WPD07502K/ WPD07501K max. 90 ft.
WPD10001K max. 110 ft.
DETERMINE THE DEPTH OF YOUR WELL
Tie a small but heavy weight to the end of a piece of string. Lower the weight into the well until it reaches the bottom.
Make a mark on the string at ground level. Pull the weight out of the well and measure from the bottom of the weight to
the ground level mark. This is the depth of your well. This number should not exceed the maximum rated depth for your
pump. If it does, it will greatly hinder or prevent the proper operation of the pump.
LOCATION OF THE PUMP
Decide on the area for the pump installation. Select a pump location with adequate space for future pump maintenance.
Intended for indoor use only, it can be located in the basement or utility room of the house. If installed outside of the
house, it should be protected by a pump house with auxiliary heat to prevent possible freezing. Protect pump from direct
weather elements such as sun, rain, sleet, snow, and extreme temperature changes. The well also should be protected
for sanitary reasons. Mount the pump as close to the well as possible.
Phillips
Screwdriver
Flathead
Screwdriver
Thread
Tape
Tape
Measure
Safety
goggles
Pipe wrench
Hacksaw

4 For Professional Technical Support call 1-844-242-2475
TANKS - PRE-CHARGED STORAGE
The well pump must be mounted to either a pre-charged or conventional type tank. One 20 gallons tank isrecommended,
the bigger tank the better.It is best to have this in place before installing the pump. For best performance of the pump, it
is recommended that you use a diaphragm pressure tank (sold separately). A pre-charged 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 (pre-charged). More usable water is provided than with a conventional type tank.
Air pressure in the tank must be 2 psi lower than the "cut-in" of the pressure switch.
NOTE: The pump has a 30/50 psi pressure switch, which means the "cut-in" is 30 psi; therefore, the tank needs to be set
to 28 psi. To check the pressure in the tank, use a tire pressure gauge (not included). If more air is needed, add air to the
tank with a tire pump or air compressor. If less is needed, bleed out some air.
CAUTION: In order for the pump and tank to operate properly, the pressure tank needs to be drained of all water
BEFORE INSTALLING THE NEW PUMP. After draining, if you are using the supplied 30/50 psi pressure switch at the
pre-set settings, add or adjust the air pressure in the tank to 28 psi of pressure BEFORE start up.
PREPARATION
Parts you may need for assembly not include（Fig.1）
Item
Description
Item
Description
1
1-1/4in. Brass Foot Valve
12
3/4in. PVC MPT×S Male Adapter
2
1-1/4in. PVC MPT×S Male
Adapter
13
3/4in. PVC rigid Pipe
3
1-1/4in. PVC rigid Pipe
14
3/4in. CPVC CTC Socket Tee Fitting
4
Well Seal Single Pipe
15
3/4in. PVC 90-Degress S×S Elbow
5
1in. PVC MPT×S Male
Adapter
16
1-1/2in.Brass Foot Valve
6
1-1/4in.Lead Free Brass
Check Valve
17
1-1/2in.×3in.Galv.Steel Nipple
7
1-1/4in.×3in. Galv. Steel
Nipple
18
1in.×3in.Galv.Steel Nipple
8
1-1/4in. PVC FPT×S Female
Adapter
19
1in.PVC FPT×S Female Adapter
9
1in.PVC rigid Pipe
20
4in.Well Seal Double Pipe
10
1in.PVC 90-Degress S×S
Elbow
21
1-1/4in.PVC Tee FPT×FPT×FPT
11
1in.×3/4in. PVC Reducing
Male Adapter
22
1-1/4in.Galvanized Plug
Optional Parts For Assembly not included (Fig.2)
Item
Description
Item
Description
1
3/4in.Slip×Slip Ball Valve
5
20 Gal. or larger Tank
2
1-1/4in. PVC Slip×Slip Union
6
Well point, Drive Couping, Drive Cap
3
3/4in. PVC FPT×FPT Union
7
1/8in.AVC control kit
4
1-1/4in. PVC Couping
1in. PVC Couping
3/4in. PVC Couping
1
2

For Professional Technical Support call 1-844-242-2475 5
INSTALLING WELL APPLICATION
Shallow Well Application
Shallow well systems are identified by one pipe going to the well, lake or river. Convertible Jet Pump can be used for
shallow well (25' or less), with the shallow well Jet assembly.
1. CASED WELL APPLICATION, 4” OR LARGER CASING (Fig.1)
A hole bored into the earth with machinery. Depths range from a few feet
to 25 feet. Common well diameters are 4", 5", 6" and 8" for domestic water
wells.
2. WELL POINT(DRIVEN POINT) APPLICATION(Fig.2)
Pipe with a pointed screen is driven into the ground below the water table.
The depth is usually less than 25 feet. Available diameters are 1" through
2.
3. APPLICATION FOR SURFACE WATER (Fig.3)
One pipe goes into lake, river, cistern or ponds, suction lift is less than
25'.Install a screen around the inlet pipe to prevent the entrapment of
swimmers, wildlife and debris.
CAUTION: Possible contamination. Do not use surface water for
drinking. The installation shown could be used for sprinkler applications.
Deep Well Application (Double Pipe System)
A hole bored into the earth with machinery. The depth is greater than 25
feet. Common well diameters are 4", 5", 6" and 8" for domestic water
wells.
Deep well systems are identified by two pipe going to the well, one
suction pipe and one drive pipe Convertible Jet Pump can be used for
deep well( over 25' ), with a deep well Jet assembly in the well. The
suction pipe and drive pipe are attached to the Jet assembly.

6 For Professional Technical Support call 1-844-242-2475
INSTALLATION
Flexible pipe is prohibited on suction pipe (inlet pipe). 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.
1.INSTALLING PIPING IN WELL
Shallow Well Application Only
CAUTION: Dry-fit entire assembly to ensure proper fit before gluing or taping parts. Follow all proper gluing procedures
as specified by the glue manufacturer. Always glue in a vertical direction whenever possible to prevent glue from
dripping inside pipe or fittings Use pipe tape and pipe paste compound on all male threads. Tighten with wrench to a
snug fit and add another 1/4 turn to ensure proper seal.
For Cased well Installation
1. Connect 1-1/4in.Brass Foot Valve to 1-1/4in. PVC
MPT×S Male Adapter. Cement adapter to 1-1/4 in.
PVC rigid Pipe. All connections must be air- and
water-tight for pump to operate correctly. (Fig 1)
2. Install well seal over 1-1/4 in. PVC rigid Pipe and into
well casing. Position the foot valve 5 feet above
bottom of well and at least 10 feet below the well’s
water level.(Fig 2)
3. Cement 1-1/4in. PVC MPT×S Male Adapter at the top
of the Pipe. Install 1-1/4in.PVC TEE FPT×FPT×FPT
to the adapter. One end of port install another 1-1/4in.
PVC MPT×S Male Adapter. Add sections of pipe to
reach the adapter. (Fig 3)
For Well Point Installation
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

For Professional Technical Support call 1-844-242-2475 7
1. Connect 1-1/4in. Drive Coupling to well
point.Thread 1-1/4in.Galv.Steel Pipe into Drive
Coupling. (Fig. 1)
2. Thread 1-1/4 in. Lead Free Brass Check Valve into
Steel nipple .Install 1-1/4in. ×3in. Galv. Steel Nipple
into the check valve. (For easy priming connect the
check valve as close to the well as possible) (Fig. 2)
3. Install 1-1/4in.PVC TEE FPT×FPT×FPT to the nipple.
One end of horizontal port install another 1-1/4in. PVC
MPT×S Male Adapter and 1-1/4 in.PVC rigid
Pipe.Add sections of pipes to reach the 1-1/4in. PVC
Slip ×Slip Union (optional). (Fig. 3)
For Surface water Installation
1. Connect 1-1/4in.Brass Foot Valve to 1-1/4in. PVC
MPT×S Male Adapter.Cement adapter to 1-1/4 in.
PVC rigid Pipe. All connections must be air- and
water-tight for pump to operate correctly. (Fig 1)
2. Install screen surround the foot valve, protect the foot
valve assembly from fish, trash, etc. Position the foot
valve 5 feet above bottom of well and It should also be
at least 10 feet below the water level in order to
prevent the pump from sucking air. (Fig 2)
3. Cement 1-1/4in. PVC MPT×S Male Adapter into
1-1/4 in. PVC rigid Pipe. Install 1-1/4in.PVC TEE
FPT×FPT×FPT to adapter. One end of horizontal port
install another 1-1/4in. PVC MPT×S Male Adapter
and 1-1/4 in.PVC rigid Pipe. Add sections of pipes to
reach the 1-1/4in. PVC Slip ×Slip Union
(optional ).(Fig. 3)

8 For Professional Technical Support call 1-844-242-2475
Deep Well Application Only(4” Or larger Well)
1. Install 1-1/2in.Brass Foot Valve to 1-1/2in. ×3in.
Galv. Steel Nipple. Connect nipple/foot valve
assembly to bottom of ejector body. Next install plastic
nozzle and venturi into top of ejector body. All
connections must be watertight for pump to operate
correctly. (Fig. 1)
Note: Select the nozzle and Venturi in different depth of
water below the chart.
Double pipe jet package chart
Model
No.
HP
Max Depth to water in FT.
Depth
limit
nozzle Venturi
Depth limit
nozzle Venturi
3/4
25-70
#51 J32P-24
70-90
#54 J32P-20
1
25-70
#51 J32P-24
70-110
#54 J32P-20
2. Install a 1-1/4in. PVC MPT×S Male Adapter on
ejector body over the plastic venturi. Then install a 1in.
×3in. Galv. Steel Nipple in ejector body, followed by
a 1in.PVC FPT×S Female Adapter. Cement 1in.and
1-1/4in.PVC rigid pipes into the adapter. (Fig. 2)
3. Install 4in.well seal over 1in. and 1-1/4 in. PVC rigid
Pipe. Position the foot valve at least 5 feet above bottom of
well and 10 feet below the well’s water level. Cut top of 1in.
PVC rigid Pipe and 1-1/4in. PVC rigid Pipe compatibly
for next installation step as shown in the installation
diagram. (Fig. 3)
4. Cement 1in.PVC 90-Degress S×S Elbow to the top of
1 in. PVC rigid Pipe. Cement 1-1/4in. PVC MPT×S Male
Adapter to the top of 1-1/4 in. PVC rigid Pipe and Install
1-1/4in. PVC TEE FPT×FPT×FPT to adapter. One end of
horizontal port install another 1-1/4in. PVC MPT×S Male
Adapter.Completed installation is shown. (Fig. 4)

For Professional Technical Support call 1-844-242-2475 9
4.WELL TO PUMP CONNECTION
Shallow Well Application Only
1. Thread 1-1/4in. PVC MPT×S Male Adapter into
pump. Cement a short horizontal 1-1/4 in.PVC rigid
Pipe into adapter. (Fig .1)
2. Cement a 1-1/4in. PVC Slip× Slip Union into a short
horizontal 1-1/4 in.PVC rigid Pipe. Slopes all inlet
piping slightly upward from well to the pump to
prevent trapping air.(Fig.2)
3. Completed installation is shown Fig. 3a.3b.3c.
For Cased well For Well Point For Surface water
Deep Well Application Only
1. Remove two bolts, take the shallow well ejectors
included venture and nozzle out, take out gasket seal.
(Fig. 1)
2. Install 1-1/4in. PVC MPT×S Male Adapter at the top
tapping and 1in. ×3in.Galv.Steel Nipple at the
bottom tapping of pump face. Thread 1in. PVC FPT×S
Female Adapter into the nipple. Cut 1in. pipe and
1-1/4in. pipe. Cement them to the adapter and tee
assembling in the previous step INSTALLING
PIPING IN WELL.(Fig. 2)
3. Completed installation is shown. (Fig. 3)
Note: slopes all inlet piping slightly upward from well to the pump to prevent trapping air.

10 For Professional Technical Support call 1-844-242-2475
5.PUMP TO PRESSURE TANK AND TO HOUSE CONNECTION
Notes: The pump must be within 4’ of the tank to prevent switch chatter. Check the tank pre charge on a yearly basis
Pre-Charge Tank Connection
1. Most pressure tanks will have a 1in. inlet elbow on the
bottom. Connect to this elbow with a 1in. PVC MPT×S
Male Adapter and a short piece of 1in.PVC rigid
Pipe. (Fig. 1)
2. Cement a 1in.PVC 90-Degress S×S Elbow. (Fig. 2)
3. Cement a 1in.PVC rigid Pipe into elbow then cement
a 1in.×3/4in.PVC Reducing Male Adapter. (Fig. 3)
4. Cement a 3/4in.PVC rigid Pipe into a 3/4in.CPVC CTC
Socket Tee Fitting. Cement 3/4in. PVC MPT×S Male
Adapter into 3/4in.PVC rigid Pipe that connect with a
3/4in. PVC FPT×FPT Union .(Fig. 4)
5. Make the connection to the house plumbing. From the
tee, install pipe and 3/4in.Slip×Slip Ball Valve
(optional). (Fig. 5)
6. Install a 3/4in. PVC MPT×S Male Adapter to the
outlet port of the pressure control valve at the top of
the pump. (Fig. 6)
7. Cement a short 3/4in.PVC rigid Pipe and 3/4in.PVC
90-Degress S×S Elbow. (Fig. 7)

For Professional Technical Support call 1-844-242-2475 11
8a.Completed shallow well installation with piping and tank
is shown (Fig. 8a)
8b.Completed deep well installation with piping and
tank is shown (Fig. 8b)
NOTE: If a pre-charged 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. Once a bladder is leaking or broken, the bladder cannot be repaired. The tank must be replaced.
Standard Tank (CONVENTIONAL TYPE) Connection
From step 1 to 3 is the same as Pre-Charge Tank Connection.
4. Cement 3/4in.PVC rigid Pipe into 3/4in.PVC
90-Degress S×S Elbow. Cement 3/4in. PVC MPT×S
Male Adapter into 3/4in.PVC rigid Pipe that connect
with a 3/4in. PVC FPT×FPT Union .(Fig. 4)
5. Install a 3/4in. PVC MPT×S Male Adapter into the
outlet port of the pump. (Fig. 5)
6. Install a short 3/4in.PVC rigid Pipe. (Fig. 6)
7. Completed installation with piping and tank is shown
(Fig. 7)

12 For Professional Technical Support call 1-844-242-2475
8a. Remove the 1/8” NPT pipe plug from the pump Air
Volume Control (AVC) port. Near the top tapping of the
pump face, thread a 1/8 in barbed barb x MIP adapter
fitting into the pump's AVC port .Run tubing from the
pump’s AVC port to the port on the AVC mounted on the
tank. You have just completed the tank connection for your
shallow well jet pump. (Fig. 8a)
8b. Completed the tank connection for your deep well jet
pump. (Fig. 8b)
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 setting and will be
adjusted correctly.
PUMP ELECTRICAL CONNECTIONS
WARNING: Risk of electric shock. Can shock, burn or kill. Disconnect power before working on pump, motor,
pressure switch, or wiring.
To change from 230V to 115V
WPD07502K
The motor is 115/230 Volt single phase. This pump has
built- in automatic dual-voltage selector switch and voltage
can be converted automatically. No change need
WPD07501K / WPD10001K
The motor is 115/230 Volt single phase and pre-wired at
230 volts.
If the power supply is 115 volts, remove the rear cover of
motor.
Slide the switch to show 115 Volt.
Replace the rear cover of motor.
WARNING: Risk of electric shock. Can shock, burn or
kill. Be sure power is off. Never connect a motor set to 115
V to a 230 V power supply.
Wiring The Pressure Switch
1. Remove the switch Cover that installed the Pressure
Switch. (Fig. 1)
2. Insert an electrical wire strain relief into the opening in
the opposite side of the pressure switch. (Fig. 2)
2

For Professional Technical Support call 1-844-242-2475 13
3. Pass the cable from the power supply through the strain
relief and tighten both screws on the strain relief. Do not
crush wire.(Fig. 3)
4. Connect the two wires from the power supply to the two
outside terminals on the pressure switch (Fig. 4)
5. Connect the green ground wire from the power supply to
the green ground screw in the pressure switch (Fig. 4)
Risk of electric shock. 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 dedicated branch
circuit (one with no other appliances on it).
Risk of explosion. Do not ground to a gas supply line.
WARNING: Risk of fire. 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: For model WPD07501K / WPD10001K, motors voltage were set for 230 V. If necessary, reset the motor to the
desired voltage, as shown. 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.
Wiring Chart – Recommended Wire and Fuse Sizes
Motor
HP
Volts
Max.
Load
Amp
Branch
Fuse
Rating
Amp
DISTANCE IN FEET FROM MOTOR TO SUPPLY
0 - 50
51 - 100
101 - 200
201 -
300
301 -
400
401 -
500
AWG WIRE SIZE (mm2)
3/4
115/230
15.8/7.9
20/15
14/14 (2/2)
14/14 (2/2)
10/14
(5/2)
8/14
(7/2)
8/14
(7/2)
6/12
(9/3)
1
115/230
17.6/8.8
25/15
14/14 (2/2)
12/14 (3/2)
10/14
(5/2)
8/12
(7/3)
8/12
(7/3)
6/12
(9/3)
PUMP PRIMING&STARTUP
Shallow Well Application Only
CAUTION: Risk of burns. 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.
WARNING: Risk of explosion and scalding. 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.
4
3
5
4

14 For Professional Technical Support call 1-844-242-2475
1. Open the Pressure control valve completely
then 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. (Fig.
1) (Fig. 2)
2. Open the faucet closest to the pump/tank a small amount to allow air to escape the system.
3. Power on! Start the pump.
4. If you don’t have water, stop the pump and remove the fill plugs. Refill the pump and piping. You may have to repeat
this two or three times in order to get all the trapped air out of the piping.
5. 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 Troubleshooting or call our customer service technical staff.
Deep Well Application Only
CAUTION: All pumps must be primed (filling the cavity with water) before they are first operated. This may take several
gallons of water, as the suction line will be filled in addition to the pump cavity.
1. Open the Pressure control valve anti- clockwise as
far as possible. (Fig. 1)
2. Remove the 1/2” priming plug and priming tee plug. Fill
pump cavity and pipe with water until it is full .Replace
1/2in. priming plug and priming tee plug. (Fig. 2)
Notes: Check to be sure water in pump cavity stays
constant. If water level goes down, it could indicate a leak
in the foot valve, check valve or suction pipe
3. Close Pressure control valve completely by turning
clockwise. Now start the pump.(Fig. 3)
4. If pump is properly primed, pressure will quickly build
and register on the gauge mounted directly on the
pump body. If pressure does not build, repeat priming
operation. All air must be vented from the drive and
suction pipes as well as the pump cavity before the
pump will prime. The pump cavity may need to be filled
several times in order to achieve the prime. (Fig.4)

For Professional Technical Support call 1-844-242-2475 15
5. After the pump is primed and operate at a steady high
pressure, open two or more faucets and slowly
unscrew the flow control screw and pay attention to
the pressure on the pressure gauge until the pressure
value reaches the requirements of the following table.
This pressure will be minimum operating pressure.
The pressure value diverts the proper amount of water
to operate the ejector.
Adjust the Pressure control valve to the pressure listed in the chart below
HP
Operating Pressure Setting
3/4
33 PSI
1
35PSI
The correct Pressure control valve setting will depend on the type of well installation and pressure switch setting for
the particular pump.
6. If pressure falls completely, retighten the flow control screw and readjust it according to step 5.
NOTE: If the pump is being used for shallow well applications, the flow control screw should be set in the full open
position.
IMPORTANT: If you don’t have water after 2 or 3 minutes, Turn power off at the breaker box. Look for leaks or a milky
color in the discharged water, which indicates an air leak. All connections must be water and air tight in order for pump to
operate. Re-prime if necessary, following steps 1 through 6 above.
Notes: If the pump has not been used for some time, be sure there is water in the pump housing (volute) and the piping
to the well.
CARE AND MAINTENANCE
WARNING: Disconnect power and release all pressure from the system before attempting to install, service, relocate or
perform any maintenance.
Winterizing
CAUTION: Drain the entire system if there is danger of
freezing. A drain plug is provided at the bottom of the pump
case for this purpose
Drain openings are provided on all models to drain the pump:
Unplug the pump from power supply outlet.
Remove drain plug close to the inlet hole.
Drain all piping to a point below the freeze line. This will
drain the pump.
NOTE: While this will drain the pump, it will not necessarily drain all the unprotected parts of the piping system. To drain
tank, disconnect the piping at the tank outlet.
SEAL ASSEMBLY REPLACEMENT
CAUTION: Make certain that the power supply is disconnected before attempting to service the unit! The rotary
seal assembly must be handled carefully to avoid damaging the precision lapped faces of the sealing
components.
1. Disengage pump body (Ref. No. 12) from motor mounting ring (Ref. No. 15).
2. Remove diffuser (Ref. No. 6).
3. Remove the rear cover(Ref. No. 17) .Remove the impeller(Ref. No. 5) use a 9/16" open end wrench to hold the motor
shaft.
4. The rotary seal (Ref. No. 4) will come loose at this time. Use a screwdriver (or similar instrument) to pry the silicon
carbide seal from the recess of the Seal plate (Ref. No. 2). Be careful not to damage the motor shaft or recess
surface.

16 For Professional Technical Support call 1-844-242-2475
5. Clean the recess and motor shaft thoroughly.
6. Install the new seal assembly.
a. Insert the silicon carbide seal and the rubber gasket into the recess of the Seal plate.
NOTE: To help facilitate installation, apply a drop of liquid soap to the outside diameter of the rubber gasket. Make
certain that the polished surface of mechanical seal and motor shaft are kept clean and free of dirt and/or oil.
b. Slip the remaining parts of the rotary seal assembly onto the motor shaft.
NOTE: Apply a drop of liquid soap to the inside diameter of the rubber drive ring.
7. Replace the impeller and diffuser removed in Steps 2 & 3.
8. Reassemble the pump body to the motor and mounting bracket.
ITEM
DESCRIPTION
QTY.
1
Motor
1
2
Seal Plate
1
3
O -ring
1
4
Mechanical Seal Assembled,E-5/8"
1
5
Impeller
1
6
Diffuser
1
7
Diffuser Ring
1
8
Control Valve Body
1
9
Flow Control Screw
1
10
Pressure Switch
1
11
Plug 1/8” NPT
1
12
Pump Body
1
13
Pressure Gauge
1
14
Lead Wire
1
15
Mounting Ring
1
16
Base
1
17
Rear cover

For Professional Technical Support call 1-844-242-2475 17
TROUBLESHOOTING
For model: WPD07501K / WPD10001K
Problem
Possible Cause
Corrective Action
Pump does not start or
run.
1. The switch is off.
2. There is a blown fuse or tripped
breaker.
3. The pressure switch contacts
are dirty.
4. The wires at the motor are loose
or wired incorrectly.
1. Turn the power switch on.
2. Replace the fuse or reset the circuit breaker.
3. DISCONNET THE POWER. File or clean the
switch contacts.
4. DISCONNECT THE POWER.
Follow the wiring instructions to check and
tighten the wires.
Pump will not prime.
1. The pump was primed
improperly or air is trapped in
the pipe.
2. There is an air leak.
3. The water level is below the
suction pipe inlet.
4. The foot valve is plugged or
leaks.
1. DISCONNECT THE POWER. Adjust pump
height and make the pipe slope down to the
well. Remove the discharge tee and
re-prime.
2. Check all connections and fix the leakage.
3. Lower the suction pipe. If the water level is
more than 25 ft., use deep well installation.
4. Clean or replace the foot valve.
Pump operates but pumps
little or no water.
1. The foot valve is buried in sand
or mud.
2. The ejector or impeller is
plugged.
3. The foot valve or inlet strainer is
clogged.
4. The water level is below the
maximum lift specification.
5. The voltage is not correct.
6. The pressure control valve is
not set up correctly.
1. Lift the suction pipe.
2. Clean the ejector or impeller.
3. Clean or replace as necessary.
4. Select a convertible jet pump.
5. Check the voltage switch.
6. Readjust the pressure regulator.
Pump starts and stops too
often.
1. The tank was pre-charged
incorrectly.
2. There is a ruptured
diaphragm/bladder
(pre-charged tank)/or has no air
cushion.
3. The pipes are leaking.
4. The foot valve leaks.
5. The pressure switch is not
adjusted correctly.
6. The air charge is too low in the
pre-charged tank.
7. Standard pressure tank
(Conventional Type) is
waterlogged, and has no air
cushion.
1. Add or release air as needed.
2. Replace the tank/refill the air.
Test the tank by depressing the air valve.
The air valve will expel water if the bladder is
broken.
3. Repair the pipe connections or replace the
pipes.
4. Repair or replace the foot valve.
5. Closely look at the pressure gauge to see the
pump On/Off points are around
30 psi/50 psi. If not, adjust or replace the
pressure switch.
6. DISCONNECT POWER and open faucets
until all pressure is relieved. Using tire
pressure gauge, check air pressure in the
tank at the valve stem located on the tank. If
less than pressure switch cut-in setting (30
psi), pump air into the tank from an outside
source until air pressure is 2 psi less than the
cut-in setting of the switch. Check the air
valve for leaks (use soapy solution) and
replace core if necessary.
7. Drain tank to air volume control port, check
AVC for defects.
Pump does not shut off.
1. Water level is lower than
estimated.
2. The pipes leak.
3. The pressure switch is not set
correctly.
4. Venturi, nozzle or impeller is
clogged.
1. Use a deep well installation.
2. Locate and repair the leak or reconnect.
3. Reset or replace the pressure switch.
4. Remove the pump body and seal plate,
observe it

18 For Professional Technical Support call 1-844-242-2475
For model: WPD07502K except for the upper ones, also included below:
Problem
Possible Cause
Corrective Action
Red light blinks: locked,
overload, overheat
Definition: when the overload is
detected for the first time, the
motor stops immediately, and
starts again 20 seconds later.
Repeat the detection for three
times until it stops completely
after overload.
Impeller blocked or debris goes
around impeller.
Disassemble pump and clean debris.
Blue light blinks: dry run
Definition: when no-load is
detected for the first time, the
motor stops after 40 seconds of
operation, and starts again after
20 seconds. This is repeated for
3 time, and stops completely
after 3 times of no load.
1. Did not prime.
1. Please fill water into pump to prime.
Yellow light blinks: Rapid
cycle.
Definition: It is detected that the
motor has started 20 times within
1 minute, and it will stop
immediately.
1. The tank was pre-charged
incorrectly.
2. There is a ruptured
diaphragm/bladder (pre-charged
tank)/or has no air cushion.
3. The pipes are leaking.
4. The foot valve leaks.
5. The pressure switch is not
adjusted correctly.
6. The air charge is too low in the
pre-charged tank.
1. Add or release air as needed.
2. Replace the tank/refill the air.
3. Repair the pipe connections or
replace the pipes.
4. Repair or replace the foot valve.
5. Closely look at the pressure gauge to
see the pump On/Off points are
around 30 psi/50 psi. If not, adjust or
replace the pressure switch.
6. DISCONNECT POWER and open
faucets until all pressure is relieved.
Using tire pressure gauge, check air
pressure in the tank at the valve
stem located on the tank. If less than
pressure switch cut-in setting (30
psi), pump air into the tank from an
outside source until air pressure is 2
psi less than the cut-in setting of the
switch. Check the air valve for leaks
(use soapy solution) and replace
core if necessary
Green breathing light: Standby
Green light: Normal working
condition

For Professional Technical Support call 1-844-242-2475 19
WARRANTY
Limited Warranty
WHAT THIS WARRANTY COVERS
When used and maintained in normal use and in accordance with the Owner’s Manual, your K2 product is warranted
against original defects in material and workmanship for at least one year (warranty varies depending on model; see box
for specific warranty information) from the date of purchase (the “Warranty Period”). During the Warranty Period, K2 will
repair or replace at no cost to you, to correct any such defect in products founds upon examination by K2 to be defective
in materials or workmanship.
Your dated receipt of purchase is required to make a warranty claim.
WHAT THIS WARRANTY DOES NOT COVER
This Warranty does not cover:
Use of the product in a non-residential application, improper installation and/or maintenance of the product, damage due
to misuse, acts of God, nature vandalism or other acts beyond control of K2, owner’s acts or omissions, use outside the
country in which the product was initially purchased and resale of the product by the original owner. This warranty does
not cover pick up, delivery, transportation or house calls. However, if you mail your product to an K2 Sales and Service
Center for warranty service, cost of shipping will be paid one way. This warranty does not apply to products purchased
outside of the United States, including its territories and possessions, outside of U.S. Military Exchange and outside of
Canada. This warranty does not cover products purchased from a party that is not an authorized retailer, dealer or
distributor of K2 products.
OTHER IMPORTANT TERMS
This warranty is not transferable and may not be assigned. This Warranty shall be governed and construed under laws
of the state of Michigan. The Warranty Period will not be extended by any replacement or repair performed under this
Warranty. THIS WARRANTY IS THE EXCLUSIVE WARRANTY AND REMEDY PROVIDED BY K2. ALL OTHER
WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING WARRANTIES OR MERCHANTABILITY OR FITNESS FOR
PARTICULAR PURPOSE, ARE DISCLAIMED. IN NO EVENT WILL K2 BE LIABLE FOR ANY SPECIAL, INDRECT,
INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY KIND OR NATURE TO OWNER OR ANY PARTY
CLAIMING THROUGH OWNER WHETHER BASED IN CONTRACT, NEGLIGENCE, TORT, OR STRICT PRODUCTS
LIABLITY OR ARISING FROM ANY CAUSE WHATSOEVER. Some states do not allow for the exclusion of
consequential damages, so the above exclusion may not apply to you. This warranty gives you specific rights. You may
also have others that vary from state to state.
Thank you for choosing a K2 product!