DYNA-PRO
TM
CENTRIFUGAL PUMPS
WITH INTEGRAL TRAP
O W N E R’ S M A N U A L
(Unions optional)
INSTALLATION, OPERATION & PARTS
Series MPRA, MPEA, and MPE
See Page 3 for Model Numbers
This manual should be furnished to
the end user of this pump; its use will
reduce service calls and chance of
Pentair Water Pool and Spa, Inc.
Sanford, N.C., Moorpark, CA, USA
Ontario, Canada
Herentals, Belgium S771 (Rev. B 2/8/08)
injury and will lengthen pump life.
2
Technical Support
Sanford, North Carolina (8 A.M to 5 P.M.)
Phone: (800) 831-7133
Moorpark, California (8 A.M to 5 P.M.)
Phone: (800) 831-7133
Fax: (800) 284-4151
Websites: visit www.pentairpool.com and staritepool.com
© 2008 Pentair Water Pool and Spa, Inc. All rights reserved.
This document is subject to change without notice.
1620 Hawkins Ave., Sanford, NC 27330 • (919) 566-8000
10951 West Los Angeles Ave., Moorpark, CA 93021 • (805) 553-5000
Trademarks and disclamers: Sta-Rite® and Dyna-Pro™ are trademarks and/or registered trademarks of Pentair Water Pool and Spa, Inc. and/or
its affiliated companies in the United States and/or other counties. Teflon® is a registered trademark of E.I. Du Pont De Nemours and Company
Corporation and Plasto-Joint Stik® is a registered trademark of La-Co Industries, Inc. Unless noted, names and brands of others that may be used
in this document are not used to indicate an affiliation or endorsement between the proprietors of these names and brands and Pentair Water
Pool and Spa, Inc. Those names and brands may be the trademarks or registered trademarks of those parties or others.
P/N S771 Rev B 2/8/08
3
‘MPRA’, ‘MPEA’ & ‘MPE’
Single Speed Models
HP MPRA MPE, MPEA
1/2 MPE6C-204L
3/4 MPRA6D-204L MPEA6D-204L, MPE6D-205L
1 MPRA6E-205L MPEA6E-205L, MPE6E-206L
1-1/2 MPRA6F-206L MPEA6F-206L, MPE6F-207L
2 MPRA6G-207L MPEA6G-207L, MPE6G-208L
2-1/2 MPEAA6G-208L
Two Speed Models
HP MPRA MPE, MPEA
1-1/2 MPRA6YF-206L MPE6YF-207L
2 MPEA6YG-207L, MPE6YG-208L
2-1/2 MPEAA6YG-208L
SERIES PUMPS WITH
TRAP
To avoid unneeded service calls, prevent possible injuries, and get the most out of your pump, READ THIS
MANUAL CAREFULLY!
The Sta-Rite ‘MPRA’, ‘MPEA’ & ‘MPE’ Series Self-priming
Centrifugal pump:
• Is designed for use with swimming pools or as a centrifugal pump.
READ AND FOLLOW
SAFETY INSTRUCTIONS!
This is the safety alert symbol. When you see this
symbol on your system or in this manual, look for
one of the following signal words and be alert to the potential for personal injury.
warns about hazards that will cause death,
serious personal injury, or major property damage
if ignored.
• Is an excellent performer; durable, reliable.
Table of Contents
Safety Instructions .....................................................3-4
Installation.................................................................4-5
Pool Pump Suction Requirements ..............................6-6
Electrical ...................................................................6-8
Operation.....................................................................9
Storage/Winterizing ...................................................9-10
Pump Service ..........................................................10-11
Troubleshooting Guide ...............................................12
Repair Parts List .....................................................13-14
warns about hazards that can cause death,
serious personal injury, or major property damage
if ignored.
warns about hazards that will or can cause
minor personal injury or property damage if ignored.
NOTICE indicates special instructions not related to hazards.
Carefully read and follow all safety instructions in this
manual and on equipment. Keep safety labels in good
condition; replace if missing or damaged.
Incorrectly installed or tested equipment
may fail, causing severe injury or property
damage.
Read and follow instructions in owner's manual when installing and operating equipment. Have a trained pool
professional perform all pressure tests.
4
1. Do not connect system to a high pressure or city water
system.
2. Use equipment only in a pool or spa installation.
3. Trapped air in system can cause explosion. BE SURE all
air is out of system before operating or testing equipment.
Before pressure testing, make the following safety
checks:
• Check all clamps, bolts, lids, and system accessories
before testing.
• Release all air in system before testing.
• Water pressure for test must be less than 25 PSI
(7.5 kg/cm
2
).
• Water Temperature for test must be less than 100oF.
(38oC).
• Limit test to 24 hours. After test, visually check system
to be sure it is ready for operation. Remove trap lid and
retighten hand tight only, see Figure 1.
NOTICE: These parameters apply to Sta-Rite equipment
only. For non-Sta-Rite equipment, consult manufacturer.
NOTICE: Do not start the pump until the strainer basket
cover is on and the tab, or rib, on the discharge port
aligns between the arrows.
IMPORTANT SAFETY
P
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Arrows
Ta b
Discharge
Por t
Figure 1 – Strainer basket cover alignment.
INSTALLATION
Only qualified, licensed personnel should install pump
and wiring.
Discharge Port
to Filter or Pool
Bonding Lug
Strainer Basket
Cover
Suction
Por t
from
Pool or
Vacuum
Filters
INSTRUCTIONS
Always follow basic safety precautions with this
equipment, including the following.
To reduce the risk of injury, do not permit children to use this product unless they are closely
supervised at all times.
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.
SAVE THESE
INSTRUCTIONS
Pump may be bolted to level
foundation or mounting bracket.
Figure 2
NOTICE: Port threads are: Internal - 2" NPT for direct connec-
tion to pipe. External - 3-1/4" Buttress. Fits Sta-Rite U11-200P
Union Collar for quick disconnect pipe connection.
See Page 13 for Union Kits.
Pump mount must:
Be located away from corrosive or flammable liquids.
Have enough ventilation to maintain air temperature at less
than the maximum ambient temperature rating (Max. Amb.)
listed on the motor model plate. If this pump is installed in
an enclosure/pump house, the enclosure must have adequate ventilation and air circulation to keep the temperature in the enclosure at or below the motor’s rated ambient
temperature whenever the pump is running.
Be solid - Level - Rigid - Vibration free. (To reduce vibration and pipe stress, bolt pump to mount.)
5
Allow pump suction inlet height to be as close to water
level as possible. Pump will not lift water more than
10' (3m).
Allow use of short, direct suction pipe (To reduce friction
losses).
Allow for gate valves in suction and discharge piping.
Have adequate floor drainage to prevent flooding.
Be protected from excess moisture.
Allow adequate access for servicing pump and piping.
Fire and burn hazard. Modern motors run at
high temperatures. To reduce the risk of fire, do not allow
leaves, debris, or foreign matter to collect around the
pump motor. To avoid burns when handling the motor, let
it cool for 20 minutes before trying to work on it.
NOTICE: When connecting threaded pipe directly to pump,
use Teflon® tape or Plasto-Joint Stik®
not use pipe dope; pipe dope causes cracking in some plastics and may damage components in piping system.
When connecting pipe to pump with union half, use
Teflon® tape or Plasto-Joint Stik® between pipe and union
adapter. Union collar to pump should be assembled dry
and hand-tight.
NOTICE: Pump suction and discharge connections have
molded in thread stops. DO NOT try to screw pipe in beyond these stops.
to seal connections. Do
Teflon® Taping Instructions:
Use only new or clean PVC pipe fittings.
Wrap male pipe threads with one to two layers of Teflon®
tape. Cover entire threaded portion of pipe.
Do not overtighten or tighten past thread stop in pump port!
If leaks occur, remove pipe, clean off old tape, rewrap
with one to two additional layers of tape and remake the
connection.
NOTICE: Support all piping connected with pump!
Piping:
Use at least 2" (51mm) pipe. Increase size if a long run is
needed.
To avoid strains on the pump, support both suction and
discharge pipes independently. Place these supports near
the pump.
To avoid a strain left by a gap at the last connection, start
all piping at the pump and run pipe away from the pump.
To avoid airlocking, slope suction pipe slightly upward
toward the pump.
NOTICE: To prevent flooding when removing pump for
service, all flooded suction systems must have gate valves
in suction and discharge pipes.
POOL PUMP SUCTION
REQUIREMENTS
Pump suction is haz-
ardous and can trap and
drown or disembowel
bathers. Do not use or operate swimming pools, spas, or
hot tubs if a suction outlet
cover is missing, broken, or
loose. Follow the guidelines
below for a pump installation
Hazardous suction.
Can trap hair or
body parts, causing
severe injury
or death.
Do not block
suction.
suction entrapment or hair entrapment/entanglement.
Suction Outlet Covers
All suction outlet covers must be maintained. They must
be replaced if cracked, broken, or missing.
See Page 6 for outlet cover certification requirements.
All suction outlets must have correctly installed, screw-fastened covers in place.
Suction Outlets Per Pump (Figure 3, Page 6)
Provide at least two hydraulically balanced main drains,
with covers, as suction outlets for each circulating pump
suction line. The centers of the main drains (suction outlets)
on any one suction line must be at least three feet apart.
The system must be built so that it cannot operate with
the pump drawing water from only
is, there must be at least two main drains connected to
the pump whenever it is running – see Figure 3, Page 6).
However, if two main drains run into a single suction
line, the single suction line may be equipped with a valve
which will shut off
Figure 3).
More than one pump can be connected to a single suction line as long as the requirements above are met.
both
which minimizes risk to users
of pools, spas, and hot tubs.
Entrapment Protection
The pump suction system
must
provide protection
against the hazard of
one
main drain (that
main drains from the pump (see
6
Water Velocity
The maximum water velocity through the suction fitting
or cover for any suction outlet must not exceed 1.5 feet
per second unless the outlet complies with the latest
ANSI/ASME Specification for
Suction Fittings For Use in
Swimming Pools, Spas, Hot Tubs, and Whirlpool Bathtub
Applications.
In any case, do not exceed the suction fit-
ting’s maximum designed flow rate.
If 100% of the pump’s flow comes from the main drain
system, the maximum water velocity in the pump suction
hydraulic system must be six feet per second or less even
if one main drain (suction outlet) is completely blocked.
The flow through the remaining main drain(s) must comply with the latest ANSI/ASME Specification for
Suction
Fittings For Use in Swimming Pools, Spas, Hot Tubs, and
Whirlpool Bathtub Applications.
Testing and Certification
Suction outlet covers must have been tested by a nationally recognized testing laboratory and found to comply
with the latest ANSI/ASME Specifications for
Suction
Fittings For Use in Swimming Pools, Spas, Hot Tubs, and
Whirlpool Bathtub Applications.
Fittings:
Fittings restrict flow; for best efficiency use fewest possible fittings (but at least two suction outlets).
Avoid fittings which could cause an air trap.
Pool fittings must conform to International Association of
Plumbing and Mechanical Officials (IAPMO) standards.
Use only non-entrapping suction fitting or double suction.
ELECTRICAL
Ground motor before
connecting to electrical
power supply. Failure to
ground motor can cause severe or fatal electrical shock
hazard.
Do not ground to a gas
supply line.
To avoid dangerous or
fatal electrical shock,
turn OFF power to motor before working on electrical
connections.
Ground Fault Circuit
Interrupter (GFCI) tripping indicates an electrical
problem. If GFCI trips and
will not reset, have a qualified
electrician inspect and repair electrical system.
Exactly match supply voltage to nameplate voltage.
Incorrect voltage can cause fire or seriously damage motor and voids warranty. If in doubt consult a licensed electrician.
Voltage
Voltage at motor must be not more than 10% above or
below motor nameplate rated voltage or motor may overheat, causing overload tripping and reduced component
life. If voltage is less than 90% or more than 110% of
rated voltage when motor is running at full load, consult
power company.
Figure 3 – Recommended pump suction layout.
Hazardous voltage.
Can shock, burn,
or cause death.
Disconnect power
before working
on pump or motor.
IAPMO Certified
Anti-entrapment
Cover or Suction Fitting,
screw-fastened to
Main Drain Sump
Suction Outlet
(Main Drain)
Valves OK between
pump and Tee
At Least
3 Feet
No valves between
Tee and Main Drains
IAPMO Certified
Anti-entrapment
Cover or Suction Fitting,
screw-fastened to
Main Drain Sump
Suction Outlet
(Main Drain)
Pump
2762 0197
7
Grounding/Bonding
Install, ground, bond and wire motor according to local
or National Electrical Code requirements.
Permanently ground motor. Use green ground terminal
provided under motor canopy or access plate (See Figure
4); use size and type wire required by code. Connect
motor ground terminal to electrical service ground.
Bond motor to pool structure. Use a solid copper conductor,
size No. 8 AWG (8.4 sq.mm) or larger. Run wire from external bonding lug (see Figure 4) to reinforcing rod or mesh.
Bonding
Lug
Green
Ground
Screw
A
A
230V
115V
L2
L2
L1
L1
Figure 4 – Typical ground screw and bonding lug
locations.
Connect a No. 8 AWG (8.4 sq.mm) solid copper bonding
wire to the pressure wire connector provided on the
motor housing and to all metal parts of the swimming
pool, spa, or hot tub and to all electrical equipment,
metal piping or conduit within 5 feet (1.5 m) of the inside
walls of swimming pool, spa, or hot tub.
1. Turn off power.
2. Remove the motor end cover.
To Wire a Single Speed, Single Voltage Motor
There are two terminals labeled L1 and L2. Attach the
power leads to these terminals. Either wire may attach to
either terminal.
To Wire a Dual-Voltage Motor
Dual voltage motors have a plug to change from 230 volts
(factory setting) to 115 volts.
1. If you have 230 volts motor supply voltage, confirm
that the plug is set for 230 volts. The arrow on the plug
will point to the 230 volt position. Note that plug only
connects with one prong in this position.
2. If you have 115 volt supply, pull the plug straight up
and place it on the two brass prongs as shown.
Wiring
NOTICE: 3 phase models require magnetic motor starters
and external overload protection. If in doubt about the
procedure, consult a licensed electrician.
Pump must be permanently connected to circuit. Table I,
Page 8, give correct wire and circuit breaker sizes for the
pump alone. If other lights or appliances are also on the
same circuit, be sure to add their amp loads to pump
amp load before figuring wire and circuit breaker sizes.
(If unsure how to do this or if this is confusing, consult a
licensed electrician.) Use the load circuit breaker as the
master on-off switch.
Install a Ground Fault Circuit Interrupter (GFCI) in circuit;
it will sense a short-circuit to ground and disconnect
power before it becomes dangerous to pool users. For
size of GFCI required and test procedures for GFCI, see
manufacturer’s instruction.
In case of power outage, check GFCI for tripping (which
will prevent normal pump operation). Reset if necessary.
NOTICE: If you do not use conduit when wiring motor,
be sure to seal wire opening on end of motor to prevent
dirt, bugs, etc., from entering.
Risk of dangerous or fatal electrical shock.
Be sure that power to the motor circuit is off before
working on wiring, wiring connections, or motor. Re-install the motor end cover and all other wiring covers before turning on the power.
Figure 5A -Voltage Change
Plug Set for 230 Volts
Figure 5B -Voltage Change
Plug Set for 115 Volts
NOTE: Arrow is highlighted for clarity.
To Wire a Two-Speed Motor
Wire the pump as shown in the diagram.
Ground (Green)
Back of
motor
with
Terminal
Board
A
L2
L2=COM
L1=HI
A=LOW
Minimum switch and timer amp rating must equal Branch Fuse
Rating given in "Recommended Fusing and Wiring Data" table.
Common
Power Supply for
Optional Timer.
L1
If using timer, Connect
Timer Motor to Low Speed Only
Figure 5C: 2-Speed Motor Wiring Diagram
Low Speed
High Speed
Remote
SPDT
Switch
230
Volt
Lines
Circuit
Protector
4558 0304
8
TABLE I - RECOMMENDED CIRCUIT BREAKER AND WIRING DATA
Serv. to Motor - Dist. in Ft. (M)
Motor Branch CB Max Load Voltage/ 0-100' 101-200' 201-300'
HP Rating Amps Amps Hz/Phase (0-30) (30-60) (60-90)
MPRA SERIES – SINGLE SPEED
3/4 20/15 13.4/6.7 115/230/60/1 12/14(3/2) 10/14(5.5/2) 8/14(8.4/2)
1 20/15 15.3/7.6 115/230/60/1 12/14(3/2) 8/14(8.4/2) 6/14(14/2)
1-1/2 25/15 19.2/9.6 115/230/60/1 10/14(5.5/2) 8/14(8.4/2) 6/12(14/3)
2 20 12.0 230/60/1 14(2) 14(2) 12(3)
MPEA SERIES – SINGLE SPEED
3/4 15/15 11.0/5.5 115/230/60/1 14/14(2/2) 10/14(5.5/2) 8/14(8.4/2)
1 20/15 13.8/6.9 115/230/60/1 12/14(3/2) 10/14(5.5/2) 8/14(8.4/2)
1-1/2 25/15 16.0/8.0 115/230/60/1 12/14(3/2) 8/14(8.4/2) 6/14(14/2)
2 15 10.4 230/60/1 14(2) 14(2) 12(3)
2-1/2 15 11.2 230/60/1 14(2) 14(2) 12(3)
MPRA SERIES – TWO SPEED
1-1/2 – 1/4 15 9.2/2.5 230/60/1 14(2) 14(2) 12(3)
MPEA SERIES – TWO SPEED
2 – 1/4 15 10.0/3.0 230/60/1 14(2) 14(2) 12(3)
2-1/2 – 1/2 15 11.3/3.3 230/60/1 14(2) 12(3) 12(3)
MPE SERIES – SINGLE SPEED
1/2 15/15 11.0/5.5 115/230/60/1 14/14(2/2) 10/14(5.5/2) 8/14(8.4/2)
3/4 20/15 13.8/6.9 115/230/60/1 12/14(3/2) 10/14(5.5/2) 8/14(8.4/2)
1 25/15 16.0/8.0 115/230/60/1 12/14(3/2) 8/14(8.4/2) 6/14(14/2)
1-1/2 15 10.4 230/60/1 14(2) 14(2) 12(3)
2 15 11.2 230/60/1 14(2) 14(2) 12(3)
MPE SERIES – TWO SPEED
1-1/2 – 1/4 15 10.0/3.0 230/60/1 14(2) 14(2) 12(3)
2 – 1/3 15 11.3/3.3 230/60/1 14(2) 12(3) 12(3)
AWG
Wire
Size
(mm2)
}
AWG
Wire
Size
(mm2)
}
AWG
Wire
Size
(mm2)
}
AWG
Wire
Size
(mm2)
}
AWG
Wire
Size
(mm2)
}
9
OPERATION
NOTICE: NEVER run pump dry. Running pump dry may
damage seals, causing leakage and flooding. Fill pump
with water before starting motor.
Before removing trap cover:
1. STOP PUMP before proceeding.
2. CLOSE GATE VALVES in suction and discharge pipes.
3. RELEASE ALL PRESSURE from pump and piping system.
If pump is being pressure tested, be sure pressure
has been released before removing trap cover.
Do not block pump suc-
tion. To do so with
body may cause severe or
fatal injury. Small children
using pool must ALWAYS
have close adult supervision.
Fire and burn
hazard. Modern motors run at
Hazardous suction.
Can trap hair or
body parts, causing
severe injury
or death.
Do not block
suction.
ternal cutoff switch protects the motor from heat damage
during operation.
NOTICE: Maximum ambient temperature for motor operation must not exceed maximum ambient temperature on
motor nameplate.
high temperatures. To reduce
the risk of fire, do not allow
leaves, debris, or foreign matter to collect around the pump
motor. To avoid burns when
handling the motor, let it cool
for 20 minutes before trying to
work on it. An automatic in-
Replace trap cover on trap; turn clockwise to tighten
cover.
NOTICE: Tighten trap cover handle ring by hand only
(no wrenches)! See Figure 1, Page 4.
Pump should prime now. Priming time will depend on
vertical length of suction lift and horizontal length of suction piping.
If pump does not prime, make sure that all valves are open,
suction pipe end is under water, pump is not trying to lift
water more than 10' (3m), and that there are no leaks in
suction pipe. See Troubleshooting Guide, Page 12.
Routine Maintenance
The only routine maintenance needed is
inspection/cleaning of trap basket. Debris or trash that
collects in basket will choke off water flow through the
pump. Follow instructions below to clean trap:
1. Stop pump, close valves in suction and discharge, and
release all pressure from system before proceeding.
2. Remove trap cover handle ring (turn counterclockwise). If necessary, tap handles gently with a rubber
mallet.
3. Remove strainer basket and clean. Be sure all holes in
basket are clear, flush basket with water and replace in
trap with large opening at pipe connection port (between ribs provided). If basket is replaced backwards
cover will not fit on trap body.
4. Clean and inspect lid O-Ring; reinstall on trap groove.
5. Clean O-Ring groove on trap body and replace cover
and handle ring. To help keep cover from sticking,
tighten hand tight only.
6. Prime pump (see priming instructions).
Priming Pump
Release all pressure from filter, pump, and piping system;
see the filter owner’s manual.
In a flooded suction system (water source higher than
pump), pump will prime itself when suction and discharge valves are opened.
If pump is not in a flooded suction system, unscrew and
remove trap cover; fill trap and pump with water.
Clean and inspect O-Ring; reinstall on trap groove.
Do not lubricate the trap cover O-Ring. The original
equipment O-Ring contains a permanent internal lubricant.
NOTICE: If you replace the O-Ring with a non-internally
lubricated O-Ring, you may need to apply a silicone
based lubricant.
Storage/Winterizing
NOTICE: Allowing pump to freeze will damage pump
and void warranty!
NOTICE: Do not use anti-freeze solutions (except propy-
lene glycol) in your pool/spa system. Propylene glycol,
“RV antifreeze”, is non-toxic and will not damage plastic
system components; other anti-freezes are highly toxic
and may damage plastic components in the system.
Drain all water from pump and piping when expecting
freezing temperatures or when storing pump for a long
time (see instructions below).
Keep motor dry and covered during storage.
To avoid condensation/corrosion problems, do not cover
pump with plastic.
10
For outdoor/unprotected installations:
1. Enclose entire system in a weatherproof enclosure.
2. To avoid condensation/corrosion damage, allow venti-
lation; do not wrap system in plastic.
3. Use a 40% propylene glycol/60% water solution to
protect pump to -50°F (-46°C).
Draining Pump
Startup For Winterized Equipment
1. Remove any temporary weather protection placed
around system for shutdown.
2. Follow filter manufacturer’s instructions for reactivation of the filter.
3. Inspect all electrical wiring for damage or deterioration
over the shutdown period. Have a qualified serviceman repair wiring as needed.
Explosion hazard. Purging the system with
compressed air can cause components to explode, with
risk of severe injury or death to anyone nearby. Use only
a low pressure (below 5 PSI), high volume blower when
air purging the pump, filter, or piping.
1. Pump down water level below all inlets to the pool.
To avoid dangerous or
fatal electrical shock
hazard, turn OFF power to
motor before draining pump.
2. Remove trap cover handle
ring (turn counterclockwise). If necessary, tap handles gently with a rubber
mallet. Low pressure air
can be used to remove remaining water from the
Hazardous voltage.
Can shock, burn,
or cause death.
Disconnect power
before working
on pump or motor.
piping.
3. Cap inlet piping after
draining to keep water out
of the pipes.
4. To prevent pump from freez-
ing, remove trap cover and
drain the tank body through the two drain plugs provided.
A. Gravity drain system as far as possible.
B. Protect areas which retain water with non-toxic
propylene glycol antifreeze (“RV” antifreeze).
5. Clean pump thoroughly; replace trap cover.
NOTICE: Tighten trap cover by hand only (no
wrenches)! If pump is not anchored, use caution to
not break attached piping!
6. Be sure motor is kept dry and covered.
4. Inspect and tighten all watertight connections.
5. Open all valves in suction and return piping.
6. Remove any winterizing plugs in piping system.
7. Drain all antifreeze from system.
8. Close all drain valves and replace all drain plugs in
piping system.
9. Prime pump according to instructions on Page 9.
PUMP SERVICE
Pump should only be serviced by qualified personnel.
For best results, use only genuine Sta-Rite factory parts.
Be sure to prime pump (Page 9) before starting.
Before removing trap cover:
1. STOP PUMP before proceeding.
2. CLOSE GATE VALVES in suction and discharge pipes.
3. RELEASE ALL PRESSURE from pump and piping system.
To avoid dangerous or
fatal electrical shock
hazard, turn OFF power to
motor before working on
pump or motor.
Aside from lubricating trap
cover O-Ring, no lubrication
or regular maintenance is
needed beyond reasonable
care and periodic cleaning of
strainer basket.
Hazardous voltage.
Can shock, burn,
or cause death.
Disconnect power
before working
on pump or motor.
11
If shaft seal is worn or damaged, repair as follows:
Pump Dissasembly/Removing Old Seal
Disconnect power to pump motor.
Be
sure valves on suction and return piping are
closed before starting work.
Release all pressure by opening all vents before starting
work.
1.
Drain pump by removing drain plugs on bottom of
pump
body and trap body.
2. Be
sure there is no pressure in trap body; remove
cover
(unscrew by turning counterclockwise).
3.
Remove 6 nuts, lockwashers and flat washers holding
seal
plate to pump body. Pull seal plate and motor
away
from pump body. (You may have to CAREFULLY
use
a screwdriver to separate body from seal plate.)
4.
Remove seven screws and washers holding diffuser to
seal
plate. Remove diffuser.
5.
Remove motor canopy. Being careful not to touch ca-
pacitor
terminals, loosen capacitor clamp and move
capacitor
to one side.
6.
Hold shaft with 7/16" open-end wrench on motor
shaft
flats.
7.
Unscrew impeller from shaft (turn counterclockwise
when
facing it).
NOTICE: On
2 HP model, remove impeller screw
(left
hand thread - turn clockwise) and gasket before
removing
impeller. Inspect gasket for damage,
cracks,
etc. Replace if damaged.
8.
Remove four screws holding seal plate to motor.
9.
Place seal plate face down on flat surface and tap out
ceramic
seat (Figure 6).
10
. Remove slinger from motor shaft and inspect for dam-
age or abrasion.
11.
Clean seal cavity in seal plate and clean motor shaft.
Pump Reassembly/Installing New Seal
1. Ceramic seat must be clean and free of dirt, grease,
dust,
etc. Wet outer edge with small amount of liquid
detergent;
press ceramic seat into seal plate cavity
firmly
and squarely with finger pressure (Figure 7).
2.
If ceramic seat will not locate properly, remove it,
place face
up on bench and reclean cavity. Ceramic
seat
should now locate.
3.
If seat still will not locate properly, place a cardboard
washer
over the polished face and use a piece of 3/4"
(19mm)
standard pipe for pressing purposes.
NOTICE:
Be sure not to scratch or mar polished sur-
face
or seal will leak.
4.
Replace slinger on end of motor shaft so that impeller
sleeve
will push it into position. If slinger shows signs
of
wear or damage, replace it.
5.
Remount seal plate on motor. Tighten bolts to 60-80
inch-lbs.
(69-92 kg/cm) torque.
6.
Apply a small amount of liquid detergent to inside di-
ameter
of rotating half of seal.
7.
Slide rotating seal member, polished carbon face out,
over
impeller sleeve until rubber drive ring hits back
of
impeller.
NOTICE:
Be sure not to nick or scratch polished seal
face;
seal will leak if face is damaged.
8.
Screw impeller onto shaft (clockwise); this will auto-
matically
locate seal in seal plate.
NOTICE: On
2 and 2-1/2 HP models; install impeller
gasket
and lock screw (left-hand thread - turn coun-
ter
clockwise
). Torque lock screw to 50-55 inch-lbs.
(57.6-63
kg/cm).
9.
Mount diffuser on seal plate; tighten screws to 10-14
inch-lbs.
(11.2-16.1 kg/cm) torque.
10
. Assemble motor and seal plate to pump body with
nuts,
flat washers and lock washers. Torque nuts to
120-130
in-lbs. (138-150 kg/cm).
11.
Prime pump according to instructions on Page 9.
Figure 6
Mechanical seal
ceramic seat
Polished
surface
Rubber
surface
Figure 7
12
TROUBLESHOOTING
GUIDE
Read and understand safety and operating
instructions in this manual before doing any
work on pump!
Only qualified personnel should electrically test
pump motor!
FAILURE TO PUMP; REDUCED CAPACITY
OR DISCHARGE PRESSURE
Suction leaks/lost prime:
1. Pump must be primed; make sure that pump volute
and trap are full of water. See priming instructions,
Page 9.
2. Make sure there are no leaks in suction piping.
3. Make sure suction pipe inlet is well below the water
level to prevent pump from sucking air.
4. If suction trap O-Ring is defective, replace it.
5. Make sure pump is not trying to lift water more than
10' (3m).
6. Make sure suction pipe is at least 2" (51mm) in diameter.
Clogged pipe/trap/impeller, worn impeller:
7. Make sure suction trap is not clogged; if it is, clean
trap and strainer.
8. Make sure impeller is not clogged (follow steps 1
through 7 under “Removing Old Seal”, Page 11;
check impeller for clogging; follow steps 7 through
11 under “Installing New Seal”, Page 11, for
reassembly).
9. Impeller and diffuser may be worn. If so, order replace-
ment parts from Repair Parts List, Pages 13 and 14.
Electrical:
10. Pump may be running too
slowly; check voltage at
motor terminals and at
meter while pump is running. If low, see wiring instructions or consult
power company. Check
for loose connections.
11. Pump may be too hot.
A. Check line voltage; if
Hazardous voltage.
Can shock, burn,
or cause death.
Disconnect power
before working
on pump or motor.
less than 90% or more
than 110% of rated
voltage consult a
licensed electrician.
B. Increase ventilation.
C. Reduce ambient
temperature.
D. Tighten any loose connections.
MECHANICAL TROUBLES AND NOISE
1. If suction and discharge piping are not adequately
supported, pump assembly will be strained. See
“Installation”, Page 4.
2. Do not mount pump on a wooden platform!
Securely mount on concrete platform for quietest
performance.
13
REPAIR PARTS LIST
DYNA-PRO™ POOL PUMP
1/2 through 2-1/2 HP Models
Single Speed and Two Speed
Model No. HP Motor (Key No. 1)
Single Speed 115/230/60/1
MPRA6D-204L 3/4 A100DLL
MPRA6E-205L 1 A100ELL
MPRA6F-206L 1-1/2 A100FLL
MPEA6D-204L 3/4 AE100DLL
MPEA6E-205L 1 AE100ELL
MPEA6F-206L 1-1/2 AE100FLL
MPE6C-204L 1/2 AE100CHL
MPE6D-205L 3/4 AE100DHL
MPE6E-206L 1 AE100EHL
230/60/1
MPRA6G-207L 2 A100GLL
MPEA6G-207L 2 AE100GLL
MPEAA6G-208L 2-1/2 AE100G5LL
MPE6F-207L 1-1/2 AE100FHL
MPE6G-208L 2 AE100G5HL
Two Speed 230/60/1
MPRA6YF-206L 1-1/2 A100FLL-Y
MPEA6YG-207L 2 AE100GLL-Y
MPEAA6YG-208L 2-1/2 AE100G5LL-Y
MPE6YF-207L 1-1/2 AE100GLL-Y
MPE6YG-208L 2 AE100G5LL-Y
For quick disconnect pipe connections,
purchase separately:
Pkg. 188 2" Slip 1/2 Union Kit or
Pkg. 189 2" NPT 1/2 Union Kit.
Includes:
U11-200PS Union Collar
U9-362 O-Ring
U11-196P 2" Slip adapter or
U11-199P 2" NPT adapter.
Box A
24
23
1
2
3
4
5
6
See
Box A
7
8
8A
8B
9
10
12
13
14
22
21
20
11
15A
19
18
See
Box A
17
16
15B
14
MPEA6G-207L
MPEA6F-206L MPE6F-207L MPEAA6G-208L
MPEA6D-204L MPEA6E-205L MPE6E-206L MPEA6YG-207L MPE6G-208L
Key Part MPE6C-204L MPE6D-205L MPRA6F-206L MPE6YF-207L MPEAA6YG-208L
No. Description Qty. MPRA6D-204L MPRA6E-205L MPRA6YF-206L MPRA6G-207
MPE6G-208L
2 Screw #10-32x1/2" 1 U30-692SS U30-692SS U30-692SS U30-692SS U30-692SS
3 Bonding Lug 1 U17-568 U17-568 U17-568 U17-568 U17-568
4 Slinger 1 17351-0009 17351-0009 17351-0009 17351-0009 17351-0009
5 Seal Plate 1 C3-184P C3-184P C3-184P C3-184P C3-184P
6 Seal Plate Cord Ring 1 U9-373 U9-373 U9-373 U9-373 U9-373
7 Shaft Seal 1 37400-0027 37400-0027 37400-0027 37400-0027 37400-0027
8 Impeller 1 C105-236P C105-236PB C105-236PC C105-236PDA C105-236PEA
8A Gasket 1 – – – 33455-1047 33455-1047
8B Impeller Lock Screw 1 – – – 37337-6080 37337-6080
9 Diffuser 1 C1-270PB C1-270PC C1-270P C1-270P C1-270P
10 Diffuser O-Ring 1 U9-374 U9-374 U9-374 U9-374 U9-374
11 Tank and Trap Body (Only) 1 C76-71P C76-71P C76-71P C76-71P C76-71P
12 Trap Lid and Ring Assembly 1 17307-0111 17307-0111 17307-0111 17307-0111 17307-0111
13 Trap Cover O-Ring 1 35505-1440 35505-1440 35505-1440 35505-1440 35505-1440
14 Trap Basket 1 C8-58P C8-58P C8-58P C8-58P C8-58P
15A Drain Plug 2 U178-920P U178-920P U178-920P U178-920P U178-920P
15B Mounting Screw 5/16-14x5/8" 2 U30-919SS U30-919SS U30-919SS U30-919SS U30-919SS
16 Base - Plastic 1 C4-77P C4-77P C4-77P C4-77P C4-77P
17 Motor Pad - for Plastic Base 1 C35-45 C35-45 C35-45 C35-45 C35-45
18 Screw #8-32x7/8" Rd. Hd. 7 U30-542SS U30-542SS U30-542SS U30-542SS U30-542SS
19 Lock Washer #8 Ext. Tooth 7 U43-21SS U43-21SS U43-21SS U43-21SS U43-21SS
20 Flat Washer 3/8" 6 U43-62SS U43-62SS U43-62SS U43-62SS U43-62SS
21 Lock Washer 3/8" 6 U43-12SS U43-12SS U43-12SS U43-12SS U43-12SS
22 Nut 3/8-16 Hex 6 U36-38SSW U36-38SSW U36-38SSW U36-38SSW U36-38SSW
23 Cap Screws 3/8-16x1-1/4" Hex. (LS Suffix) 2 – – U30-75SS U30-75SS U30-75SS
24 Cap Screws 3/8-16x1" Hex. 4 U30-74SS U30-74SS U30-74SS U30-74SS U30-74SS
• Nameplate 1 32155-4071 32155-4071 32155-4071 32155-4071 32155-4071
• Tag, “CAUTION This pump equipped with 1 61002-0012 61002-0012 61002-0012 61002-0012 61002-0012
mechanical shaft seal…”
• Voltage Sticker 1 U27-153 U27-153 U27-153 U27-68 U27-68
• Tag, “WARNING/CAUTION/Instructions...” 1 C63-12 C63-12 C63-12 C63-12 C63-12
REPAIR PARTS LIST
DYNA-PRO™ POOL PUMP
1/2 through 2-1/2 HP Models Single Speed and Two Speed
• Not illustrated.
15
P/N S771 Rev. B 2/8/08
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