Jandy Pumps HHPU Series User manual

Installation and Operating Data
Installation and Operation Manual
HHP, HHPU, MHP & MHPU Jandy® Pumps
H0231600A
FOR YOUR SAFETY - This product must be installed and serviced by authorized per-
sonnel, qualified in pool/spa installation. Improper installation and/or operation can create
an electrical hazard which can cause serious injury, property damage, or death. Improper
installation and/or operation will void the warranty.
ATTENTION INSTALLER:
This manual contains important information about the installation,
operation and safe use of this product. This information should be
given to the owner/operator of this equipment.
WARNING

TABLE OF CONTENTS
SECTION 1
Safety Information
1A. Safety Instructions................................... 4
SECTION 2
General Information
2A. Introduction..............................................5
2B. Description...............................................5
SECTION 3
Preparation and Location
3A. PumpPreparation....................................5
3B. PumpLocation.........................................5
SECTION 4
Piping Design and Installation
4A. Sizeof SuctionPipe.................................6
4B. Sizeof DischargePipe.............................6
4C. InstallationTips........................................6
SECTION 5
Electrical Verification and Installation
5A. Checking for Correct Voltage...................7
5B. Bonding Motor to Pool Structure..............7
5C. ElectricalWiring.......................................7
SECTION 6
Start-up
6A. PumpStart-up..........................................8
SECTION 7
Use and Maintenance
7A. GeneralMaintenance.............................. 8
7B. Winterizingthe Pump.............................. 9
SECTION 8
Troubleshooting
8A. Troubleshooting.......................................9
SECTION 9
Speciality Service
9A. BlockedImpeller...................................... 10
9B. Removing the Pump Housing..................11
9C. Replacing the Pump Housing..................12
9D. MechanicalSealReplacement................13
9E. MotorReplacement................................. 14
SECTION 10
Exploded View and Replacement Parts
List
10A. JandyTM HHP Pump Series......................15
10B. JandyTM MHP & MHPU Pump Series.......17
SECTION 11
Pump Curves
11A. Jandy™ HHP & HHPU Pump Curves......18
11B. Jandy™ MHP & MHPU Pump Curves.....19
SECTION 12
Pump Dimensions
12A. Jandy™ HHP & HHPU Pump
Dimensions..............................................20
12B. Jandy™ MHP & MHPU Pump
Dimensions..............................................21
Equipment Information Record
Date of Purchase Purchased From
Pump Model Horsepower
Serial Number
Installed by Service Number
Notes:

Water Pik Technologies, Inc.
Page 4
SECTION 1.
Safety Information
1A. Safety Instructions
READ AND FOLLOW THESE SAFETY INSTRUCTIONS!
PLEASE SAVE THESE INSTRUCTIONS
Do not start pump dry! Running the pump dry for any length of time will cause severe
damage and will void the warranty.
DANGER
1. Do not block pump suction, as this will cause severe or fatal injury if blocked with the
body. Small children with access to the water must ALWAYS have close adult supervision.
2. Do not attempt to change the multiport valve position with the pump running.
WARNING
1. Do not install within an outdoor enclosure or beneath the skirt of a hot tub or
portable spa.
2. To reduce the risk of injury, do not permit children to use this product unless they are
closely supervised at all times.
3. The Jandy™ Pumps are powered by a high voltage electric motor and must be installed
by a licensed or certified electrician or a qualified swimming pool service technician.
4. Due to the potential risk of fire, electric shock, or injuries to persons, Jandy™Pumps
must be installed in accordance with the National Electric Code, all local electrical and
safety codes, and the Occupational Safety and Health Act (OSHA). Copies of the National
Electrical Code may be ordered from the National Fire Protection Association, 470 Atlantic
Ave., Boston, MA 02210, or contact your local government inspection agency.
5. Incorrectly installed equipment may fail, causing severe injury or property damage.
6. Equipment that is incorrectly pressure tested may fail, causing severe injury or property
damage. Pressure testing should only be done by trained pool/spa professionals.
7. Chemical spills and fumes can weaken pool/spa equipment. Corrosion can cause filters
and other equipment to fail, resulting in severe injury or property damage. Do not store
pool chemicals near your equipment.
CAUTION
This pump is for use with permanently installed pools and may also be used with hot tubs
and spas if so marked. Do not use with storable pools. A permanently installed pool is
constructed in or on the ground or in a building such that it cannot be readily
disassembled for storage. A storable pool is constructed so that it may be readily
disassembled for storage and reassembled to its original integrity.

Page 5
Jandy™ Pumps
SECTION 2.
General Information
2A. Introduction
This manual contains information for the proper
installation and operation of Jandy™Pumps.
Procedures in this manual must be followed exactly.
To obtain additional copies of this manual contact us
at 707-776-8200, ext. 237. For address information see
back cover.
2B. Description
Jandy™ Pumps are designed to meet the needs of
today's more hydraulically demanding pool equipment.
The pump housing, seal plate, diffuser, hair and lint
pot, and impeller are all made from high quality
thermoplastic materials. These materials were chosen
for their strength and corrosion resistance.
The pump is driven by an electric motor directly
attached to the pump impeller. As the electric motor
turns it causes the impeller to turn which forces water
to flow through the pump. The water flows into the
hair/lint pot inlet and through the basket assembly. The
basket assembly will pre-strain large particles. The
flow then enters the center of the pump housing, goes
through the impeller, into the diffuser, and out the
pump discharge port.
Two Speed Pump Models- The hydraulic
performance and priming of Jandy™ two speed pumps
will be the same at high speed as the same model
single speed pump. At low speed the pump will
produce one half (½) the flow, and one quarter (¼) the
pressure of high speed. The pressure required by the
filter and pool plumbing at half flow will also be
greatly reduced, due to much lower system friction.
These lower friction losses result in increased energy
savings. At one half flow (low speed) the electrical
energy savings are 60% for equal amounts of
circulated water.
Turn the motor to low speed for quiet operation
and electrical cost savings. Since the pump should be
operated at low speed for cost savings, minor
adjustments may be required in the automatic chlorine
dispenser, the skimmers and the heater due to the
lower flow (see the equipment manufacturer's
operation manuals).
Pool owners should use high speed for
vacuuming the pool, quick filtering action, priming the
heating system, and to keep up with heavy bathing
loads. Spa owners will want to use high speed for
good jet action.
SECTION 3.
Preparation and Location
3A. Pump Preparation
1. Upon receipt of the Jandy™ Pump, check for
carton damage. After opening the carton, check
for concealed damage such as cracks, dents or a
bent base. If damage is found contact the shipper
or distributor where the pump was purchased.
2. Inspect for missing parts, unions, lid, or basket.
See part lists on Pgs. 9-12.
3B. Pump Location
1. The pump should not be elevated more than a
few feet above the water level of the pool, it is
best to locate the pump within one (1) foot of
the water level. A check valve is recommended
on the suction line to the pump.
2. If the pump is located below water level, valves
should be installed on both the suction and
return lines to prevent back flow of pool water
during any routine servicing that may be
required.
3. The pump and other circulation equipment
should be located a minimum of five (5) feet
from the water. Choose a location that will
minimize turns in the piping.
4. The pump must be placed on a solid foundation
that will not vibrate. To further reduce the
possibility of vibration noise the pump can be
bolted down, or placed on a rubber mat.
5. The pump foundation must have adequate
drainage to prevent the motor from getting wet.
Protect the pump from the rain and sun.
6. Proper ventilation is required for the pump to
operate normally. All motors generate heat that
must be removed by providing proper
ventilation.

Water Pik Technologies, Inc.
Page 6
7. Provide access for future service by leaving a
clear area around the pump. Allow plenty of
space above the pump to remove the lid and
basket for cleaning.
8. If the equipment is under cover, provide
adequate lighting.
SECTION 4.
Piping Design & Installation
4A. Size of Suction Pipe
1. Recommended pipe size for the suction side of
the pump is 2" for ¾ to 1½ HP. For 2 HP pumps
recommended pipe size is 2½". For 3 HP pumps
recommended pipe size is 3".
4B. Size of Discharge Pipe
1. Recommended pipe size for the discharge side
of the pump is 2" for ¾ to 2 HP. For 3 HP pumps
recommended pipe size is 2½".
Note: All pipe sizes are able to withstand the
pressures the pump will deliver, but not the flow.
If the pipe is too small for the pump, or it is
elevated above water, the maximum gallons per
minute (GPM) may not be delivered.
4C. Installation Tips
1. If the pump is located below water level, it may
produce higher pressure compared to an above
water installation. Isolation valves must be
installed before and after the pump to prevent
back flow of pool water during any routine
servicing that may be required.
2. To help prevent difficulty in priming, install the
suction pipe without high points which can trap
air. For installations up to 100 feet from the
water, the recommended pipe size must be used.
For installations more than 100 feet from the
water the recommended pipe must be increased
to the next size.
3. The Jandy™Pump comes equipped with 2"
unions on both the suction and discharge ports.
This feature will simplify installation, service,
and eliminate the possibility of leaks at threaded
adapters.
4. The Jandy™ Pump must be connected to at least
two separate suction points in the water. A drain
and skimmer, two drains spaced apart, two
skimmers, or a skimmer with an equalizer line
installed. Check the local codes for proper
installation.
5. The piping must be well supported and not
forced together where constant stress will be
experienced.
6. Always use properly sized valves. Jandy™
Diverter Valves and Jandy™Ball Valves
typically have the best flow capabilities.
7. Use the fewest fittings possible. Every fitting
added has the effect of moving the equipment
farther away from the water. Note: If more than
ten (10) suction fittings are needed, the pipe size
must be increased.
8. Every new installation must be pressure tested
according to local codes.
WARNING
Do not pressure test above 35 PSI. Pressure
testing must be done by a trained pool
professional. Circulation equipment that is not
tested properly will fail, resulting in severe
injury or property damage.

Page 7
Jandy™ Pumps
SECTION 5.
Electrical Verification & Installation
5A. Check for Correct Voltage
1. The correct voltage, as specified on the pump
nameplate is necessary for proper performance
and long motor life. Incorrect voltage will
decrease the pump's ability to perform and could
cause overheating, reduce the motor life, and
result in higher electric bills.
2. It is the responsibility of the electrical installer
to provide nameplate operating voltage to the
pump, by ensuring proper circuit sizes and wire
sizes for this specific application.
5B. Bonding the Motor to the Pool
Structure
1. The motor frame must be bonded to the pool/spa
structure using a solid copper conductor, No. 8
AWG or larger.
2. Bond the motor using the external lug provided
to all metal parts of the pool, spa, or hot tub and
to all electrical equipment, metal piping, or
conduit within five (5) feet of the inside walls of
the pool, spa, or hot tub.
The pump must be permanently connected to
a dedicated electrical circuit. No other
equipment, lights, appliances or outlets may be on
the pump circuit.
Caution
Always disconnect the power source before
working on a motor or its connected load.
WARNING
Install the control switch or time clock well
away from the pool pump, filter, and other
equipment for safety reasons. Should there
be an equipment failure or loose fitting,
access to the switch away from the failed
equipment is important.
WARNING
5C. Electrical Wiring
1. The pump motor must be securely and
adequately grounded using the green screw
provided. Ground before attempting to connect
to an electrical power supply. Do not ground to
a gas supply line.
2. Wire size must be adequate to minimize voltage
drop during starting and operation of the pump.
See Table 2 for suggested wire sizes.
3. Insulate all connections carefully to prevent
grounding or short-circuits. Sharp edges on
terminals require extra protection. Tape wire
nuts to prevent loosening. For safety, and to
prevent entry of contaminants, reinstall all
conduit and terminal box covers. Do not force
connections into the conduit box.
4. To connect the pump motor for the correct
voltage, refer to the diagram on the nameplate.
Failure to provide nameplate voltage during
operation within 10% will cause motor overheating
and void the warranty.
Caution
Table 1- Wire Sizes (AWG #)
Wire Sizes
Branch Fuse Amps Up to 25 ft. 25 ft. - 50 ft. 50 ft. - 100 ft. 100 ft - 200 ft.
HP 115V 230V 115V 230V 115V 230V 115V 230V 115V 230V
¾ #20 #15 #14 #14 #14 #14 #10 #14 #8 #12
1 #25 #15 #14 #14 #12 #14 #10 #14 #6 #12
1½ #30 #15 #12 #14 #10 #14 # 8 #14 #6 #12
2 N/A #25 N/A #12 N/A #14 N/A #14 N/A #10
3 N/A #25 N/A #12 N/A #12 N/A #12 N/A #10

Water Pik Technologies, Inc.
Page 8
SECTION 6.
Start-up
6A. Pump Start-up
1. If this is a new pool installation, make sure all
piping is clear of construction debris and has
been properly pressure tested. The filter should
be checked for proper installation, verifying all
connections and clamps are secure according to
the manufacturer's recommendations.
2. Release all pressure from the system and open
the filter pressure release valve.
3. If the pump is located below the water level of
the pool, opening the filter pressure release
valve will prime the pump with water.
4. If the pump is located above the water level of
the pool, remove the lid and fill the basket with
water before starting the pump.
5. Prior to replacing the lid, check for debris
around the lid o-ring seat. Debris around the lid
o-ring seat will cause air to leak into the system,
and make it difficult to prime the pump.
6. Clean the lid o-ring and place on the lid.
7. Hand tighten the lid to make an air tight seal. Do
not use any tools to tighten the lid, hand
tighten only.
8. Make sure all valves are open and the unions are
tight.
9. Turn on the pump.
10. Once all the air has left the filter, close the
pressure release valve.
11. The pump should prime. The time it takes to
prime will depend on the elevation and length of
pipe used on the suction supply pipe. See section
4 "Piping Design & Installation" for proper
elevation and pipe size.
12. If the pump does not prime and all the
instructions to this point have been followed,
check for a suction leak.
SECTION 7.
Use and Maintenance
7A. General Maintenance
1. The pump will collect any large debris present in
the water at the pump basket. As this debris
accumulates it will begin to block the flow of
water through the pump, and must be removed.
The cleaner the basket is kept, the more
effective and efficient the pump will perform.
The pump lid is clear for easy inspection
between cleaning.
2. To clean the basket, turn off the power to the
pump. If the pump is located below the water
level, close the isolation valves on the suction
and discharge sides of the pump to prevent
backflow of water. Turn the lid counter-
clockwise until it comes off. You may use a tool
for leverage to remove the lid, but NEVER to
tighten the lid.
Never run the pump without water. Running the
pump "dry" for any length of time can cause
severe damage to both the pump and motor.
Caution
3. Lift the basket out of the pump.
4. Dispose of the debris and thoroughly clean the
basket, making sure all the holes are open. Using
a garden hose, spray the basket from the outside
to help clear the holes. Use your hands to
remove any remaining debris.
5. Replace the basket in the pump by aligning the
opening with the suction pipe. If aligned
properly, the basket will drop easily into place,
do not force.
A misaligned basket will cause the lid to be
improperly seated, allowing an air leak which
could result in pump damage.
Caution

Page 9
Jandy™ Pumps
6. Prior to replacing the lid, check for debris
around the lid o-ring seat, as this will cause air
leaks into the system. Clean the lid o-ring and
place on the lid.
7. Hand tighten the lid to make an air tight seal. Do
not use any tools to tighten the lid, hand
tighten only.
8. Verify that all valves have been returned to the
proper position for pumping.
9. Open the pressure release valve on the filter, and
make sure it is clean and ready for operation.
10. Turn on the power to the pump. Once all the air
has been evacuated from the filter, close the
pressure release valve.
7B. Winterizing the Pump
1. When freezing temperatures are expected, the
Jandy™Pump must be protected. Allowing the
pump to freeze will cause severe damage and
void the warranty.
2. Do not use antifreeze solutions in the pool, spa,
or hot tub systems! Antifreeze is highly toxic
and may damage the circulation system. The
only exception to this is Propylene Glycol. For
more information see your local pool/spa supply
store or ask a qualified swimming pool service
company.
3. Drain all water from the pump, system
equipment, and piping.
4. The pump has two drain plugs that may be
removed with a wrench. Do not use a
screwdriver to remove or install the drain plugs.
5. Store the drain plugs in a safe location and
reinstall them when the cold weather is over.
Use a silicone sealant and wrench to tighten the
drain plugs.
6. Keep the motor covered and dry. Note:
Covering the pump with plastic will create
condensation and this moisture will damage the
pump. The best way to protect your pump is to
have a qualified service technician or
electrician properly disconnect the electrical
wiring at the switch or junction box. Once the
power is removed, the two unions can be
loosened and the pump stored indoors. For
safety, and to prevent entry of contaminants,
reinstall all conduit and terminal box covers.
7. When the system is reopened for operation,
make sure all piping, valves, wiring, and
equipment are in accordance with the
manufacturer's recommendations. Pay close
attention to the filter and electrical connections.
8. The pump must be primed prior to starting, in
accordance with the "Start-up" instructions
(Section 6) contained in this manual.
SECTION 8.
Troubleshooting
8A. Troubleshooting
1. Water Pik Technologies, Inc. recommends that
you call a qualified service technician to
perform any repairs on the filter/pump system.
For technical service call 707-776-8200, ext.
260.
2. The cleaning/circulating system is not working
as well as in the past.
a. Are the skimmer baskets, pump basket and
other screens clean?
b. Has the filter been cleaned recently?
c. Are all the valves adjusted correctly? Too
much equipment on at one time will stop
many cleaners from working (waterfalls, spa
jets, surface returns, etc.).
d. Have you checked the cleaning system
manual to make sure it is adjusted according
to the manufacturer's recommendations.
3. Are there bubbles present in the pump basket?
a. Check the pool or spa water level to make
sure it is at the proper level and that air is not
being drawn into the suction piping. If the
water is normal, continue with the next step.
b. Turn off the pump. Remove the lid. Check
for debris around the lid o-ring seat, as this
will cause air leaks into the system. Clean
the lid o-ring and place on the lid. Hand
tighten the lid to make an air tight seal. Do
NOT use any tools to tighten the lid. Turn on
the pump.

Water Pik Technologies, Inc.
Page 10
4. If there are still air leaks check the suction side
piping union.
a. While the pump is running, try to tighten the
union. If this does not stop the air leak,
continue to the next step.
b. Turn off the pump.
c. Loosen both unions and slide the pump out
of the way.
d. Remove, clean and place both union o- rings.
e. Reposition the pump next to the piping and
secure the union nuts to the pump. With
clean union o-rings, hand tightening of the
unions should create a seal. If the unions still
do not seal, gently tighten with a large
tongue-and-groove pliers. DO NOT over
tighten.
5. If there is no air in the system, but the pressure
is still low.
a. It is possible that debris is caught in the
pump impeller. The Impeller is what moves
the water and has vanes that can become
blocked with debris. See "Blocked Impeller"
(Section 9A) under the "Specialty Service"
section of this manual.
6. If there is nothing blocking the impeller and the
pressure is still low. There are three other
possible reasons for this;
a. The pump has been in an abrasive
environment for a long period of time, and
the impeller and diffuser are showing signs
of wear. If the problem is normal wear on the
Impeller and diffuser, have a qualified
service technician replace them.
b. If this is a relatively new installation, it could
be an electrical problem. This problem can
be easily identified by a qualified service
technician. Have the technician check for
loose electrical connections and check the
voltage at the pump motor while it is in
operation. The voltage must be within 10%
of the motor's nameplate rating. If it is not,
then a qualified electrician and/or the power
company needs to get involved to resolve the
problem.
c. Pump seal is leaking air. Have a qualified
service technician replace the seal.
7. The pump is leaking water between the motor
and pump body.
a. This is caused by a damaged or failed
mechanical seal. To solve this problem, the
seal must be replaced. See "Mechanical Seal
Replacement" under "Speciality Service"
section of this manual.
8. The pump gets hot and shuts off periodically.
a. Make sure the motor has plenty of room to
circulate air and keep cool. Have a qualified
electrician check for loose connections and
check the voltage at the pump motor while it
is in operation. The voltage must be within
10% of the motor's nameplate rating. If it is
not, then a qualified electrician and/or the
power company needs to get involved to
resolve the problem.
SECTION 9.
Specialty Service
TWater Pik Technologies, inc. recommends that
you call a qualified service technician to perform any
repairs on the filter/pump system.
9A. Blocked Impeller
1. Turn off the pump. Switch off the circuit breaker
to the pump motor.
2. Remove the lid and basket.
3. Look inside the pump for any debris. Remove
any debris found inside.
4. Replace the basket and lid.
5. Switch on the circuit breaker to the pump motor.
6. Turn on the pump, and see if the problem is
solved.
7. If the impeller is still blocked with debris and it
is not possible to remove the debris this way, the
pump will need to be disassembled to access the
inlet and outlet of the impeller.
While servicing the pump, switch off the circuit
breakers at the power source. Severe personal
injury or death may occur if the pump starts while
your hand is inside the pump.
WARNING

Page 11
Jandy™ Pumps
9B. Removing the Pump Body
1. Turn off the pump. Switch off the circuit breaker
to the pump motor.
2. Loosen the suction and discharge unions. This
will allow you to move the pump for easy
opening. Note: Do not disconnect the wiring,
but make sure the circuit breaker is off, so the
pump will not turn on while open.
3. Using a wrench, loosen the bolts connecting the
pump body to the mounting bracket (See Fig. 1).
from one side (See Fig. 3). Notice: At this point
you have access to the inlet and outlet of the
impeller to remove any debris.
8. Remove the shaft cover on the back of the motor
by prying with a flat head screwdriver. This will
allow a wrench to be placed on the motor shaft
and prevent it from rotating while the impeller is
removed.
9. Turn the impeller counterclockwise, facing the
opening, while holding the shaft from turning.
HHP
MHP &
MHPU
Bolts (6)
4. Move the pump housing out of your way. Be
careful not to lose or damage the o-rings. The
impeller is connected to the motor side of the
pump.
5. Remove the diffuser o-ring. It may be stuck on
the pump body nozzle.
6. Using a No. 2 Phillips screwdriver, remove the
four (4) screws holding the diffuser (the cover
over the impeller) (See Fig.2).
7. Using a thin-blade screwdriver, gently pry the
diffuser off the motor assembly by inserting it
in between the diffuser and the mounting
bracket. Gently lift while working your way
around the diffuser. Do not force the diffuser off
Bolts (4)
Figure 1. Removing the Pump Housing
Mounting Bracket
Pump Body
Mounting Bracket
Pump Body
Figure 3. Removing the Diffuser MHP & MHPU Series
Diffuser
Mounting
Bracket
Locatings
Holes (3)
MHP & MHPU Series
Mounting
Bracket
Diffuser
Locate pry bar between the
mounting bracket and diffuser.
(Pry only where the pins are
located.)
Locatings
Pins (3)
Figure 2. Removing the Diffuser HHP Series
Locatings
Pins (4)
Diffuser
Mounting
Bracket
Locatings
Holes (4)
HHP Series
Mounting
Bracket
Diffuser
Locate pry bar between the
mounting bracket and diffuser.
(Pry only where the pins are
located.)

Water Pik Technologies, Inc.
Page 12
10. Remove the four (4) bolts holding the mounting
bracket to the motor. Before removing the
bracket, note the alignment of the mounting
bracket to the motor (See Fig. 4).
9C. Replacing the Pump Body
1. Replace the mounting bracket on the motor by
first, aligning the bracket with the seal splash
guard open to the ground, and the mounting
bracket part number at the top. Install and
tighten (max. 15 ft-lbs) the four (4) bolts (See
Fig. 4).
2. Thread the impeller back on the motor shaft
while holding the shaft with a wrench. Hand
tighten the impeller clockwise.
3. Replace the motor shaft cover by tapping it back
into place.
4. Replace the diffuser on the mounting bracket
assembly by snapping it into the screw holes. It
will only fit one way (See Fig. 2).
5. Replace the phillips head screws. Use the screws
to tighten the diffuser flush against the mounting
bracket. Tighten (max. 1 ft-lb) the screws by
alternating between the top and bottom and left
and right.
6. There is an o-ring located between the diffuser
and the pump body. Place the diffuser o-ring
over the diffuser's suction side (See Fig. 5).
7. Check for debris around the pump body o-ring
seat, as this will cause leaks. Clean and place the
o-ring on the mounting bracket assembly.
8. Slide the pump body together with the motor
assembly and press firmly, matching up the bolt
holes.
9. Replace the bolts by hand, making sure the
washers are in place. Using a wrench, tighten
the bolts. Use a star pattern to tighten the bolts.
Do not over tighten (max. 6 ft-lbs).
10. Verify that the union o-rings are still in place
and free of debris.
11. Reposition the pump next to the piping. Secure
the union nuts to the pump. With clean union o-
rings, hand tightening of the unions will create a
seal.
HHP
MHP &
MHPU
Bolts & Washers (4)
Mounting Bracket
Motor
Figure 4. Mounting Bracket Assembly
Bolts & Washers (4)
Mounting Bracket
Motor
Mounting Bracket
Diffuser Screws (3)
Diffuser
Impeller
Pump Body
O-Ring
Mechanical Seal
Figure 5. Mechanical Seal Replacement
HHP
MHP &
MHPU
Mounting Bracket
DiffuserImpeller
Mechanical Seal
Pump Body
O-Ring
Diffuser Screws (4)
Diffuser O-Ring
Diffuser O-Ring

Page 13
Jandy™ Pumps
12. If the pump is located above water level of the
pool, remove the lid and fill the basket with
water before starting the pump.
13. Prior to replacing the lid, check for debris
around the lid o-ring seat, as this will cause air
leaks into the system.
14. Hand tighten the lid to make an air tight seal. Do
not use any tools to tighten the lid, hand tighten
only.
15. Open the pressure release valve on the filter, and
make sure it is clean and ready for operation.
16. Switch on the circuit breaker to the pump motor.
17. Turn on the pump.
18. Once all the air has left the filter, close the
pressure release valve.
9D. Mechanical Seal Replacement
1. Follow steps 1-9 of "Removing the Pump
Housing."
2. Remove the ceramic seal from the impeller first,
by prying between the ceramic and the rubber
gasket working in a circle, then remove the
rubber seal. Do not pry between the rubber and
the plastic impeller, as this will damage the
impeller (See Fig. 6).
3. Lubricate (water) the perimeter of the new seals
rubber gasket.
4. Press the ceramic assembly onto the Impeller.
5. Use Windex or alcohol to remove any
fingerprints from the ceramic seal.
6. Using a hammer, tap the old metal w/spring seal
out of the mounting bracket from the back side.
7. Clean any silicone residue from the mounting
bracket where the seal was removed.
8. Apply new silicone sealant to the perimeter of
the new seal and press it into the mounting
bracket by hand (See Fig. 7).
9. Follow steps 1 thru 18 of "Replacing the Pump
Housing."
Mounting bracket side of
the mechanical seal
Apply silicone sealant
around outside edge
Figure 7. Mechanical Seal Replacement
Rubber Gasket
Ceramic Seal
Pry here, in-between rubber
and ceramic
Impeller side of the
mechanical seal
Figure 6. Mechanical Seal Replacement
Mounting Bracket
Mounting Bracket
Figure 8. Mechanical Seal Replacement
HHP
Impeller
Impeller
Mechanical Seal
(Shown not
installed)
Mechanical Seal
(Shown not
installed)
MHP & MHPU

Water Pik Technologies, Inc.
Page 14
Key Size ORDER
No. Description (HP) PART NO:
1 Motor, single-speed HHP Series .75 R0337701
1 Motor, single-speed HHP Series 1.0 R0337702
1 Motor, single-speed HHP Series 1.5 R0337703
1 Motor, single-speed HHP Series 2.0 R0337704
1 Motor, single-speed HHP Series 3.0 R0337705
1 Motor, single-speed HHPU Series 1.0 R0552801
1 Motor, single-speed HHPU Series 1.5 R0552802
1 Motor, single-speed HHPU Series 2.0 R0552803
1 Motor, single-speed HHPU Series 2.5 R0552804
1 Motor, 2-speed HHP Series 1.5 R0337803
1 Motor, 2-speed HHP Series 2.0 R0337804
2 Mounting Bracket All R0337900
3 Impeller,HHPSeries .75 R0338001
3 Impeller,HHPSeries 1.0 R0338002
3 Impeller,HHPSeries 1.5 R0338003
3 Impeller,HHPSeries 2.0 R0338004
3 Impeller,HHPSeries 3.0 R0338005
3 Impeller,HHPUSeries 1.0 R0338001
3 Impeller,HHPUSeries 1.5 R0338002
3 Impeller,HHPUSeries 2.0 R0338003
3 Impeller,HHPUSeries 2.5 R0338004
4 Diffuser .75-2.0 R0338101
4 Diffuser 3.0 R0338105
5 Mechanical Seal All R0338200
6 Body, Pump Face Assy. HHP Series .75-2.0 R0338301
6 Body, Pump Face Assy. HHP Series 3.0 R0338305
7 Mounting Foot Assy. All R0338400
8 PotLid All R0338500
9 Pot Basket All R0338600
12 O-ring, -264, Body, All R0338700
13 O-ring, -330, Diffuser .75-2.0 R0338801
13 O-ring, -330, Diffuser 3.0 R0338805
14 O-ring, -359, Pot Lid All R0338900
15 Hardware Set (4), Diffuser Mntg.1All R0339000
23 Drain Plugs (2) All R0339100
24 Hardware Set (2), Foot Mntg.1All R0339200
25 Hardware Set (6), Bracket Mntg.1All R0339300
26 Hardware Set (4) Motor Mntg.1All R0339400
27 Coupling NutSet All R0339500
28 O-ring, -332 (2), Coupling Set All R0339600
O-ring Set, Complete (6) All R0340900
Hardware Set, Complete All R0341000
NOTES:
1. All hardware sets contain all pieces necessary for assembly.
2. All replacement kits include all hardware and o-rings needed to
replace the ordered part.
SECTION 10.
Exploded Views & Replacement Kit
Part Numbers
To order or purchase parts for Jandy Pumps, contact your
nearest Water Pik Technologies Products dealer or distribu-
tor. If they cannot supply you with what you need, contact
the Customer Service Manager at Water Pik Technologies,
Inc.
10A. Jandy™ HHP & HHPU Pump Series
9E. Motor Replacement
1. Have a qualified service technician or electrician
properly disconnect the electrical wiring at the
pump motor.
2. Follow steps 1-9 of "Removing the Pump
Body."
3. Replace the motor with an identical make and
model.
4. Follow steps 1 thru 18 of "Replacing the Pump
Body."
5. Have a qualified service technician or electrician
properly connect the electrical wiring at the
pump motor.
Note: It is recommended that the seals be replaced at
the same time the motor is replaced.

Page 15
Jandy™ Pumps
9
8
14
6
13 4
23
24
15
3
7
12
25
526
2
1
27
27
28
28
Figure 9. HHP Exploded View

Water Pik Technologies, Inc.
Page 16
Key Size ORDER
No. Description (HP) PART NO:
50 Motor, Full Rated, MHP Series .75 R0339701
50 Motor, Full Rated, MHP Series 1.0 R0339702
50 Motor, Full Rated, MHP Series 1.5 R0339703
50 Motor, Full Rated, MHP Series 2.0 R0339704
50 Motor, Up-Rated, MHPU Series .75 R0339801
50 Motor, Up-Rated, MHPU Series 1.0 R0339802
50 Motor, Up-Rated, MHPU Series 1.5 R0339803
50 Motor, Up-Rated, MHPU Series 2.0 R0339804
50 Motor, Up-Rated, MHPU Series 2.5 R0339805
51 Mounting Bracket All R0339900
52 Impeller, MHP Series .75 R0340002
52 Impeller, MHP Series 1.0 R0340003
52 Impeller, MHP Series 1.5 R0340004
52 Impeller, MHP Series 2.0 R0340005
52 Impeller, MHPU Series .75 R0340001
52 Impeller, MHPU Series 1.0 R0340002
52 Impeller, MHPU Series 1.5 R0340003
52 Impeller, MHPU Series 2.0 R0340004
52 Impeller, MHPU Series 2.5 R0340005
53 Diffuser All R0340100
5 Mechanical Seal All R0338200
54 Body, Pump Face Assy. All R0340200
55 Mounting Foot Assy. All R0340300
8 Pot Lid All R0338500
9 Pot Basket All R0338600
56 O-ring, -259, Body All R0340400
13 O-ring, -330, Diffuser All R0338800
14 O-ring, -359, Pot Lid All R0338900
57 Hardware Set (3), Mntg. Diffuser1All R0340500
23 Drain Plugs (2) All R0339100
58 Hardware Set (2), Mntg. Foot1All R0340600
59 Hardware Set (4) Mntg. Motor1All R0340700
27 Coupling Nut Set All R0339500
28 O-ring, -332 (2), Coupling Set All R0339600
O-ring Set, Complete (6) All R0341100
Hardware Set, Complete All R0341200
NOTES:
1. All hardware sets contain all pieces necessary for assembly.
2. All replacement kits include all hardware and o-rings needed to
replace the ordered part.
To order or purchase parts for Jandy™ Pumps,
contact your nearest Water Pik Technologies Products
dealer or distributor. If they cannot supply you with
what you need, contact the Customer Service Manager
at Water Pik Technologies, Inc.
10B. Jandy™ MHP & MHPU Pump Series

Page 17
Jandy™ Pumps
50
51
59
55
56
5
52
53
58
57
13
54
28
27
23
28
27
8
14
9
Figure 10. MHP & MHPU Exploded View

Water Pik Technologies, Inc.
Page 18
SECTION 11.
Pump Curves
11A. Jandy™ HHP & HHPU Pump Curves
Flow (GPM)
0102030
40 50 60 70 80 90 100 110 120 130 140
Jandy High Head Pumps
Full Rated (HHP) & Up Rated (HHPU)
0
10
20
30
40
50
60
70
80
90
100
110
120
Feet
of
Head
5
10
15
20
25
30
35
40
45
50
P
S
I
2.0HHP/2.5HHPU
1.5HHP/2.0HHPU
1.0HHP/1.5HHPU
.75HHP/1.0HHPU
3.0HHP

Page 19
Jandy™ Pumps
11B. Jandy™MHP & MHPU Pump Curves
Jandy Medium Head Pumps
Full Rated ( and Up-Rated (MHPU)MHP)
Feet
of
Head
P
S
I
Flow (GPM)
0102030
40 50 60 70 80 90 100 110 120 130 140
0
10
20
30
40
50
60
70
80
5
10
15
20
25
30
35
1.5MHP / 2.0MHPU
1.0MHP / 1.5MHPU
.
75MHP / 1.0MHPU
.75MHPU
2.0MHP / 2.5MHPU

Water Pik Technologies, Inc.
Page 20
SECTION 12.
Pump Dimensions
12A. Jandy™HHP & HHPU Pump Dimensions
When installin
g
pump, leave
a minimum of
2 ft. of clearance
above the pump
for removal of
strainer basket.
AB10¼"
9"
4½"
38
9 "
78
7 "
58
11 "
58
5 "
C
L
MODEL HP VOLTAGE PIPE CARTON DIMENSIONS
NO. SIZE WEIGHT A B
HHP.75 .75 115/230 2" 38lbs. 23 " 13 "
HHP1.0 1.0 115/230 2" 41lbs. 23½" 13¼"
HHP1.5 1.5 115/230 2" 47lbs. 24½" 14¼"
HHP2.0 2.0 230 2" 51lbs. 25" 14¾"
HHP3.0 3.0 230 2" 59lbs. 27 " 16 "
HHPU1.0 1.0 115/230 2" 38lbs. 23 " 13 "
HHPU1.5 1.5 115/230 2" 41lbs. 23½" 13¼"
HHPU2.0 2.0 230 2" 47lbs. 24½" 14¼"
HHPU2.5 2.5 230 2" 51lbs. 25" 14¾"
18
38 18
38
1878