TM
DYNA-PRO
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
injury and will lengthen pump life.
Pentair Water Pool and Spa, Inc.
Sanford, N.C., Moorpark, CA, USA
Ontario, Canada
Herentals, Belgium
S771 (Rev. B 2/8/08)
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READ AND FOLLOW
SAFETY INSTRUCTIONS!
‘MPRA’, ‘MPEA’ & ‘MPE’
SERIES PUMPS WITH
TRAP
To avoid unneeded service calls, prevent possible in-
juries, and get the most out of your pump, READ THIS
MANUAL CAREFULLY!
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 po-
tential for personal injury.
The Sta-Rite ‘MPRA’, ‘MPEA’ & ‘MPE’ Series Self-priming
Centrifugal pump:
warns about hazards that will cause death,
serious personal injury, or major property damage
if ignored.
• Is designed for use with swimming pools or as a cen-
trifugal pump.
• Is an excellent performer; durable, reliable.
warns about hazards that can cause death,
serious personal injury, or major property damage
if ignored.
Table of Contents
Safety Instructions .....................................................3-4
warns about hazards that will or can cause
minor personal injury or property damage if ignored.
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
NOTICE indicates special instructions not related to haz-
ards.
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 in-
stalling and operating equipment. Have a trained pool
professional perform all pressure tests.
Single Speed Models
HP
MPRA
MPE, MPEA
1/2
3/4
1
1-1/2
2
2-1/2
MPE6C-204L
MPRA6D-204L
MPRA6E-205L
MPRA6F-206L
MPRA6G-207L
MPEA6D-204L, MPE6D-205L
MPEA6E-205L, MPE6E-206L
MPEA6F-206L, MPE6F-207L
MPEA6G-207L, MPE6G-208L
MPEAA6G-208L
Two Speed Models
HP
MPRA
MPE, MPEA
1-1/2
2
2-1/2
MPRA6YF-206L
MPE6YF-207L
MPEA6YG-207L, MPE6YG-208L
MPEAA6YG-208L
3
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1. Do not connect system to a high pressure or city water
system.
P
M
M
U
U
N
R
R
O
O
2. Use equipment only in a pool or spa installation.
S
S
G
G
N
N
I
I
R
R
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-
D
D
I
I
L
L
E
E
G
T
T
A
A
A
T
T
O
O
C
R
R
A
3. Trapped air in system can cause explosion. BE SURE all
air is out of system before operating or testing equipment.
C
Before pressure testing, make the following safety
checks:
Arrows
• Check all clamps, bolts, lids, and system accessories
before testing.
Tab
• Release all air in system before testing.
Discharge
Port
• Water pressure for test must be less than 25 PSI
2
(7.5 kg/cm ).
• Water Temperature for test must be less than 100o F.
Figure 1 – Strainer basket cover alignment.
(38o C).
• 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.
INSTALLATION
Only qualified, licensed personnel should install pump
and wiring.
NOTICE: These parameters apply to Sta-Rite equipment
only. For non-Sta-Rite equipment, consult manufacturer.
Strainer Basket
Discharge Port
to Filter or Pool
Cover
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.
Bonding Lug
Suction
Port
from
Pool or
Vacuum
Filters
IMPORTANT SAFETY
INSTRUCTIONS
Always follow basic safety precautions with this
equipment, including the following.
Pump may be bolted to level
foundation or mounting bracket.
To reduce the risk of injury, do not per-
mit children to use this product unless they are closely
supervised at all times.
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.
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 con-
structed so that it may be readily disassembled for stor-
age and reassembled to its original integrity.
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 ade-
quate ventilation and air circulation to keep the tempera-
ture in the enclosure at or below the motor’s rated ambient
temperature whenever the pump is running.
SAVE THESE
INSTRUCTIONS
Be solid - Level - Rigid - Vibration free. (To reduce vibra-
tion and pipe stress, bolt pump to mount.)
4
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POOL PUMP SUCTION
REQUIREMENTS
Allow pump suction inlet height to be as close to water
level as possible. Pump will not lift water more than
10' (3m).
Pump suction is haz-
ardous and can trap and
drown or disembowel
bathers. Do not use or oper-
ate swimming pools, spas, or
hot tubs if a suction outlet
cover is missing, broken, or
loose. Follow the guidelines
below for a pump installation
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.
Hazardous suction.
which minimizes risk to users
of pools, spas, and hot tubs.
Can trap hair or
body parts, causing
severe injury
or death.
Entrapment Protection
The pump suction system
must provide protection
against the hazard of
NOTICE: When connecting threaded pipe directly to pump,
use Teflon® tape or Plasto-Joint Stik® to seal connections. Do
not use pipe dope; pipe dope causes cracking in some plas-
tics and may damage components in piping system.
Do not block
suction.
suction entrapment or hair entrapment/entanglement.
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 be-
yond these stops.
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-fas-
tened covers in place.
Teflon® Taping Instructions:
Use only new or clean PVC pipe fittings.
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.
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.
The system must be built so that it cannot operate with
the pump drawing water from only one main drain (that
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 both main drains from the pump (see
Figure 3).
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.
More than one pump can be connected to a single suc-
tion line as long as the requirements above are met.
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.
5
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Water Velocity
ELECTRICAL
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.
Ground motor before
connecting to electrical
power supply. Failure to
ground motor can cause se-
vere or fatal electrical shock
hazard.
Do not ground to a gas
supply line.
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 com-
ply with the latest ANSI/ASME Specification for Suction
Fittings For Use in Swimming Pools, Spas, Hot Tubs, and
Whirlpool Bathtub Applications.
To avoid dangerous or
fatal electrical shock,
turn OFF power to motor be-
fore working on electrical
connections.
Hazardous voltage.
Can shock, burn,
or cause death.
Ground Fault Circuit
Interrupter (GFCI) trip-
ping indicates an electrical
problem. If GFCI trips and
will not reset, have a qualified
Disconnect power
before working
on pump or motor.
Testing and Certification
Suction outlet covers must have been tested by a nation-
ally 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.
electrician inspect and repair electrical system.
Exactly match supply voltage to nameplate voltage.
Incorrect voltage can cause fire or seriously dam-
age motor and voids warranty. If in doubt consult a li-
censed electrician.
Fittings:
Voltage
Fittings restrict flow; for best efficiency use fewest possi-
ble fittings (but at least two suction outlets).
Voltage at motor must be not more than 10% above or
below motor nameplate rated voltage or motor may over-
heat, 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.
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.
At Least
3 Feet
IAPMO Certified
Anti-entrapment
Cover or Suction Fitting,
screw-fastened to
Main Drain Sump
IAPMO Certified
Anti-entrapment
Cover or Suction Fitting,
screw-fastened to
Main Drain Sump
No valves between
Tee and Main Drains
Suction Outlet
(Main Drain)
Suction Outlet
(Main Drain)
Pump
2762 0197
Valves OK between
pump and Tee
Figure 3 – Recommended pump suction layout.
6
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1. Turn off power.
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.
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.
Bond motor to pool structure. Use a solid copper conductor,
size No. 8 AWG (8.4 sq.mm) or larger. Run wire from exter-
nal bonding lug (see Figure 4) to reinforcing rod or mesh.
To Wire a Dual-Voltage Motor
Dual voltage motors have a plug to change from 230 volts
(factory setting) to 115 volts.
Bonding
Lug
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.
Green
Ground
Screw
A
2. If you have 115 volt supply, pull the plug straight up
L2
and place it on the two brass prongs as shown.
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.
Wiring
NOTICE: 3 phase models require magnetic motor starters
and external overload protection. If in doubt about the
procedure, consult a licensed electrician.
Figure 5B -Voltage Change
Figure 5A -Voltage Change
Plug Set for 230 Volts
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.
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.
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.
Ground (Green)
Low Speed
230
Volt
Lines
A
Back of
motor
with
Terminal
Board
L2
Common
In case of power outage, check GFCI for tripping (which
will prevent normal pump operation). Reset if necessary.
Power Supply for
Optional Timer.
L1
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.
High Speed
Circuit
Protector
Remote
SPDT
Switch
If using timer, Connect
Timer Motor to Low Speed Only
4558 0304
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-in-
stall the motor end cover and all other wiring covers be-
fore turning on the power.
Minimum switch and timer amp rating must equal Branch Fuse
Rating given in "Recommended Fusing and Wiring Data" table.
Figure 5C: 2-Speed Motor Wiring Diagram
7
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TABLE I - RECOMMENDED CIRCUIT BREAKER AND WIRING DATA
Serv. to Motor - Dist. in Ft. (M)
Motor
HP
Branch CB
Rating Amps
Max Load
Amps
Voltage/
Hz/Phase
0-100'
(0-30)
101-200'
(30-60)
201-300'
(60-90)
MPRA SERIES – SINGLE SPEED
3/4
1
1-1/2
2
20/15
20/15
25/15
20
13.4/6.7
15.3/7.6
19.2/9.6
12.0
115/230/60/1 12/14(3/2) 10/14(5.5/2) 8/14(8.4/2)
115/230/60/1 12/14(3/2) 8/14(8.4/2) 6/14(14/2)
115/230/60/1 10/14(5.5/2) 8/14(8.4/2) 6/12(14/3)
AWG
Wire
Size
}
}
2
(mm )
230/60/1
14(2)
14(2)
12(3)
MPEA SERIES – SINGLE SPEED
3/4
1
1-1/2
2
15/15
20/15
25/15
15
11.0/5.5
13.8/6.9
16.0/8.0
10.4
115/230/60/1 14/14(2/2) 10/14(5.5/2) 8/14(8.4/2)
115/230/60/1 12/14(3/2) 10/14(5.5/2) 8/14(8.4/2)
115/230/60/1 12/14(3/2) 8/14(8.4/2) 6/14(14/2)
AWG
Wire
Size
2
(mm )
230/60/1
230/60/1
14(2)
14(2)
14(2)
14(2)
12(3)
12(3)
2-1/2
15
11.2
MPRA SERIES – TWO SPEED
1-1/2 – 1/4
15
9.2/2.5
230/60/1
14(2)
14(2)
12(3)
AWG
Wire
Size
MPEA SERIES – TWO SPEED
}
2
(mm )
2 – 1/4
2-1/2 – 1/2
15
15
10.0/3.0
11.3/3.3
230/60/1
230/60/1
14(2)
14(2)
14(2)
12(3)
12(3)
12(3)
MPE SERIES – SINGLE SPEED
1/2
3/4
1
1-1/2
2
15/15
20/15
25/15
15
11.0/5.5
13.8/6.9
16.0/8.0
10.4
115/230/60/1 14/14(2/2) 10/14(5.5/2) 8/14(8.4/2)
115/230/60/1 12/14(3/2) 10/14(5.5/2) 8/14(8.4/2)
115/230/60/1 12/14(3/2) 8/14(8.4/2) 6/14(14/2)
AWG
Wire
Size
}
2
(mm )
230/60/1
230/60/1
14(2)
14(2)
14(2)
14(2)
12(3)
12(3)
15
11.2
MPE SERIES – TWO SPEED
1-1/2 – 1/4
2 – 1/3
AWG
Wire
Size
15
15
10.0/3.0
11.3/3.3
230/60/1
230/60/1
14(2)
14(2)
14(2)
12(3)
12(3)
12(3)
}
2
(mm )
8
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Replace trap cover on trap; turn clockwise to tighten
cover.
OPERATION
NOTICE: NEVER run pump dry. Running pump dry may
damage seals, causing leakage and flooding. Fill pump
with water before starting motor.
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 suc-
tion piping.
Before removing trap cover:
1. STOP PUMP before proceeding.
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.
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.
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:
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.
1. Stop pump, close valves in suction and discharge, and
release all pressure from system before proceeding.
Fire and burn
hazard. Modern motors run at
2. Remove trap cover handle ring (turn counterclock-
wise). If necessary, tap handles gently with a rubber
mallet.
high temperatures. To reduce
the risk of fire, do not allow
leaves, debris, or foreign mat-
ter 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-
Hazardous suction.
Can trap hair or
body parts, causing
severe injury
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 (be-
tween ribs provided). If basket is replaced backwards
cover will not fit on trap body.
or death.
Do not block
suction.
4. Clean and inspect lid O-Ring; reinstall on trap groove.
ternal cutoff switch protects the motor from heat damage
during operation.
5. Clean O-Ring groove on trap body and replace cover
and handle ring. To help keep cover from sticking,
tighten hand tight only.
NOTICE: Maximum ambient temperature for motor oper-
ation must not exceed maximum ambient temperature on
motor nameplate.
6. Prime pump (see priming instructions).
Storage/Winterizing
NOTICE: Allowing pump to freeze will damage pump
and void warranty!
Priming Pump
Release all pressure from filter, pump, and piping system;
see the filter owner’s manual.
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.
In a flooded suction system (water source higher than
pump), pump will prime itself when suction and dis-
charge valves are opened.
If pump is not in a flooded suction system, unscrew and
remove trap cover; fill trap and pump with water.
Drain all water from pump and piping when expecting
freezing temperatures or when storing pump for a long
time (see instructions below).
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 lubri-
cant.
Keep motor dry and covered during storage.
To avoid condensation/corrosion problems, do not cover
pump with plastic.
NOTICE: If you replace the O-Ring with a non-internally
lubricated O-Ring, you may need to apply a silicone
based lubricant.
9
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For outdoor/unprotected installations:
Startup For Winterized Equipment
1. Remove any temporary weather protection placed
around system for shutdown.
1. Enclose entire system in a weatherproof enclosure.
2. To avoid condensation/corrosion damage, allow venti-
lation; do not wrap system in plastic.
2. Follow filter manufacturer’s instructions for reactiva-
tion of the filter.
3. Use a 40% propylene glycol/60% water solution to
protect pump to -50°F (-46°C).
3. Inspect all electrical wiring for damage or deterioration
over the shutdown period. Have a qualified service-
man repair wiring as needed.
Draining Pump
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.
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.
8. Close all drain valves and replace all drain plugs in
piping system.
To avoid dangerous or
fatal electrical shock
hazard, turn OFF power to
motor before draining pump.
9. Prime pump according to instructions on Page 9.
PUMP SERVICE
2. Remove trap cover handle
ring (turn counterclock-
wise). If necessary, tap han-
dles gently with a rubber
mallet. Low pressure air
can be used to remove re-
maining water from the
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.
Hazardous voltage.
Can shock, burn,
or cause death.
piping.
2. CLOSE GATE VALVES in suction and discharge pipes.
3. RELEASE ALL PRESSURE from pump and piping system.
3. Cap inlet piping after
draining to keep water out
of the pipes.
Disconnect power
before working
on pump or motor.
To avoid dangerous or
fatal electrical shock
hazard, turn OFF power to
motor before working on
pump or motor.
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).
Aside from lubricating trap
cover O-Ring, no lubrication
or regular maintenance is
needed beyond reasonable
care and periodic cleaning of
strainer basket.
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!
Hazardous voltage.
Can shock, burn,
or cause death.
6. Be sure motor is kept dry and covered.
Disconnect power
before working
on pump or motor.
10
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If shaft seal is worn or damaged, repair as follows:
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).
Pump Dissasembly/Removing Old Seal
Disconnect power to pump motor.
Be sure valves on suction and return piping are
closed before starting work.
Polished
Release all pressure by opening all vents before starting
work.
surface
Rubber
surface
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.)
Figure 7
4. Remove seven screws and washers holding diffuser to
seal plate. Remove diffuser.
2. If ceramic seat will not locate properly, remove it,
place face up on bench and reclean cavity. Ceramic
seat should now locate.
5. Remove motor canopy. Being careful not to touch ca-
pacitor terminals, loosen capacitor clamp and move
capacitor to one side.
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.
6. Hold shaft with 7/16" open-end wrench on motor
shaft flats.
7. Unscrew impeller from shaft (turn counterclockwise
when facing it).
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.
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.
5. Remount seal plate on motor. Tighten bolts to 60-80
inch-lbs. (69-92 kg/cm) torque.
8. Remove four screws holding seal plate to motor.
6. Apply a small amount of liquid detergent to inside di-
9. Place seal plate face down on flat surface and tap out
ceramic seat (Figure 6).
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.
10. Remove slinger from motor shaft and inspect for dam-
age or abrasion.
NOTICE: Be sure not to nick or scratch polished seal
face; seal will leak if face is damaged.
11. Clean seal cavity in seal plate and clean motor shaft.
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-
terclockwise). Torque lock screw to 50-55 inch-lbs.
(57.6-63 kg/cm).
Mechanical seal
ceramic seat
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
11
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Electrical:
TROUBLESHOOTING
GUIDE
10. Pump may be running too
slowly; check voltage at
motor terminals and at
meter while pump is run-
ning. If low, see wiring in-
structions or consult
Read and understand safety and operating
instructions in this manual before doing any
work on pump!
Only qualified personnel should electrically test
pump motor!
power company. Check
for loose connections.
FAILURE TO PUMP; REDUCED CAPACITY
OR DISCHARGE PRESSURE
11. Pump may be too hot.
A. Check line voltage; if
less than 90% or more
than 110% of rated
voltage consult a
licensed electrician.
B. Increase ventilation.
Suction leaks/lost prime:
Hazardous voltage.
Can shock, burn,
or cause death.
1. Pump must be primed; make sure that pump volute
and trap are full of water. See priming instructions,
Page 9.
Disconnect power
before working
on pump or motor.
2. Make sure there are no leaks in suction piping.
C. Reduce ambient
temperature.
3. Make sure suction pipe inlet is well below the water
level to prevent pump from sucking air.
D.Tighten any loose connections.
4. If suction trap O-Ring is defective, replace it.
5. Make sure pump is not trying to lift water more than
10' (3m).
MECHANICAL TROUBLES AND NOISE
1. If suction and discharge piping are not adequately
supported, pump assembly will be strained. See
“Installation”, Page 4.
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.
2. Do not mount pump on a wooden platform!
Securely mount on concrete platform for quietest
performance.
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.
12
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REPAIR PARTS LIST
DYNA-PRO™ POOL PUMP
1/2 through 2-1/2 HP Models
Single Speed and Two Speed
1
2
3
4
See
Box A
5
6
7
8
24
8A
8B
12
9
10
23
13
14
11
22
21
20
15A
See
Box A
19
18
17
16
15B
Model No.
HP
Motor (Key No. 1)
Single Speed 115/230/60/1
Box A
MPRA6D-204L
MPRA6E-205L
3/4
1
A100DLL
A100ELL
A100FLL
AE100DLL
AE100ELL
AE100FLL
AE100CHL
AE100DHL
AE100EHL
For quick disconnect pipe connections,
purchase separately:
Pkg. 188 2" Slip 1/2 Union Kit or
Pkg. 189 2" NPT 1/2 Union Kit.
MPRA6F-206L
MPEA6D-204L
MPEA6E-205L
MPEA6F-206L
MPE6C-204L
MPE6D-205L
MPE6E-206L
1-1/2
3/4
1
1-1/2
1/2
3/4
1
Includes:
U11-200PS Union Collar
U9-362 O-Ring
U11-196P 2" Slip adapter or
U11-199P 2" NPT adapter.
230/60/1
MPRA6G-207L
MPEA6G-207L
MPEAA6G-208L
MPE6F-207L
2
2
A100GLL
AE100GLL
AE100G5LL
AE100FHL
AE100G5HL
2-1/2
1-1/2
2
MPE6G-208L
Two Speed 230/60/1
MPRA6YF-206L
MPEA6YG-207L
MPEAA6YG-208L
MPE6YF-207L
1-1/2
2
2-1/2
1-1/2
2
A100FLL-Y
AE100GLL-Y
AE100G5LL-Y
AE100GLL-Y
AE100G5LL-Y
MPE6YG-208L
13
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REPAIR PARTS LIST
DYNA-PRO™ POOL PUMP
1/2 through 2-1/2 HP Models Single Speed and Two Speed
MPEA6G-207L
MPEA6F-206L
MPE6E-206L
MPE6F-207L
MPEA6YG-207L
MPEAA6G-208L
MPE6G-208L
MPEA6D-204L
MPEA6E-205L
Key
No.
Part
Description
MPE6C-204L
Qty. MPRA6D-204L
MPE6D-205L
MPRA6E-205L
MPRA6F-206L
MPRA6YF-206L
MPE6YF-207L MPEAA6YG-208L
MPRA6G-207
MPE6G-208L
2
3
4
5
6
7
8
8A
8B
9
10
11
12
13
14
15A
15B
16
17
18
19
20
21
22
23
24
•
Screw #10-32x1/2"
Bonding Lug
Slinger
Seal Plate
Seal Plate Cord Ring
Shaft Seal
Impeller
Gasket
Impeller Lock Screw
Diffuser
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
7
7
6
6
6
2
4
1
1
U30-692SS
U17-568
17351-0009
C3-184P
U9-373
37400-0027
C105-236P
–
U30-692SS
U17-568
17351-0009
C3-184P
U9-373
37400-0027
C105-236PB
–
U30-692SS
U17-568
17351-0009
C3-184P
U30-692SS
U17-568
17351-0009
C3-184P
U30-692SS
U17-568
17351-0009
C3-184P
U9-373
U9-373
U9-373
37400-0027
C105-236PC
–
37400-0027
C105-236PDA
33455-1047
37337-6080
C1-270P
37400-0027
C105-236PEA
33455-1047
37337-6080
C1-270P
–
–
–
C1-270PB
U9-374
C76-71P
17307-0111
35505-1440
C8-58P
U178-920P
U30-919SS
C4-77P
C1-270PC
U9-374
C76-71P
17307-0111
35505-1440
C8-58P
U178-920P
U30-919SS
C4-77P
C1-270P
U9-374
C76-71P
17307-0111
35505-1440
C8-58P
U178-920P
U30-919SS
C4-77P
Diffuser O-Ring
U9-374
C76-71P
U9-374
C76-71P
Tank and Trap Body (Only)
Trap Lid and Ring Assembly
Trap Cover O-Ring
Trap Basket
Drain Plug
Mounting Screw 5/16-14x5/8"
Base - Plastic
Motor Pad - for Plastic Base
Screw #8-32x7/8" Rd. Hd.
Lock Washer #8 Ext. Tooth
Flat Washer 3/8"
Lock Washer 3/8"
Nut 3/8-16 Hex
Cap Screws 3/8-16x1-1/4" Hex. (LS Suffix)
Cap Screws 3/8-16x1" Hex.
Nameplate
Tag, “CAUTION This pump equipped with
mechanical shaft seal…”
Voltage Sticker
17307-0111
35505-1440
C8-58P
U178-920P
U30-919SS
C4-77P
17307-0111
35505-1440
C8-58P
U178-920P
U30-919SS
C4-77P
C35-45
C35-45
C35-45
C35-45
C35-45
U30-542SS
U43-21SS
U43-62SS
U43-12SS
U36-38SSW
–
U30-74SS
32155-4071
61002-0012
U30-542SS
U43-21SS
U43-62SS
U43-12SS
U36-38SSW
–
U30-74SS
32155-4071
61002-0012
U30-542SS
U43-21SS
U43-62SS
U43-12SS
U36-38SSW
U30-75SS
U30-74SS
32155-4071
61002-0012
U30-542SS
U43-21SS
U43-62SS
U43-12SS
U36-38SSW
U30-75SS
U30-74SS
32155-4071
61002-0012
U30-542SS
U43-21SS
U43-62SS
U43-12SS
U36-38SSW
U30-75SS
U30-74SS
32155-4071
61002-0012
•
•
•
1
1
U27-153
C63-12
U27-153
C63-12
U27-153
C63-12
U27-68
C63-12
U27-68
C63-12
Tag, “WARNING/CAUTION/Instructions...”
• Not illustrated.
14
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15
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P/N S771 Rev. B 2/8/08
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