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STA-RITE DYNA-GLAS Owner's Manual

DYNA-MAX

Made by: STA-RITE
Type: Owner's Manual
Category: Swimming Pool Pump
Pages: 16
Size: 0.38 MB

 

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DYNA-GLAS

TM

and DYNA-MAX

TM

CENTRIFUGAL PUMPS

WITH INTEGRAL TRAP

O   W   N   E   R ’   S

M   A   N   U   A   L

INSTALLATION, OPERATION & PARTS

Series MPRA, MPEA, and MPFA

See Page 2 for Model Numbers

Sta-Rite Pool/Spa Group

293 Wright Street, Delavan, WI 53115

North America:

800-752-0183, FAX 800-582-2217 

International:

262-728-5551, FAX: 262-728-4461, TELEX: ITT 4970245

www.sta-ritepool.com

Union City, TN • Delavan, WI • Mississauga, Ont. • Murrieta, CA

Printed in U.S.A. © 2002, Sta-Rite Industries, Inc. 

S243 

(Rev. 12/5/02)

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.

(Unions optional)

FOR POSITION ONL

Y

 


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2

‘MPRA’, ‘MPEA’ & ‘MPFA’ 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’ & ‘MPFA’ Series Self-priming Centrifugal pump:

• Is designed for use with swimming pools or as a centrifugal pump.

• Is an excellent performer; durable, reliable.

Table of Contents

Safety Instructions  ........................................................................................3

Installation.................................................................................................4-5

Pool Pump Suction Requirements ..............................................................5-6

Electrical....................................................................................................7-8

Operation .....................................................................................................9

Storage/Winterizing .................................................................................9-10

Pump Service.........................................................................................11-12

Troubleshooting Guide ..........................................................................12-13

Repair Parts List .....................................................................................14-15

Warranty.....................................................................................................16

Single Speed Models

HP MPRA

MPEA

MPFA

3/4 MPRA6D-146L, 

MPRA6D-146LC

MPEA6D-146L

MPFA6D-176L

1 MPRA6E-147L, 

MPRA6E-147LC

MPEA6E-147L

MPFA6E-146L

1-1/2 MPRA6F-148L, 

MPRA6F-148LC

MPEA6F-148L

MPFA6F-147L

2 MPRA6G-155L, 

MPR6G-155LC

MPEA6G-155L

2-1/2 MPEAA6G-168L

Two Speed Models

HP MPRA

MPEA

1-1/2 MPRA6YF-174L, 

MPRA6YF-174LS

2

MPEA6YG-175L
MPEA6YG-175LS

2-1/2 MPEAA6YG-168L

MPEAA6YG-168LS

 


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3

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.

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 equip-
ment. 

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 per-

form all pressure tests.
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.
• Tighten Sta-Rite trap lids to 30 ft. lbs. (4.1 kg-m) torque for testing.

Water pressure for test must be less than 25 PSI (7.5 kg/cm

2

).

• Water Temperature for test must be less than 100

o

F. (38

o

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.

NOTICE:

These parameters apply to Sta-Rite equipment only. For 

non-Sta-Rite equipment, consult manufacturer.

IMPORTANT

SAFETY 

INSTRUCTIONS

Always follow basic safety pre-
cautions with this equipment, in-
cluding 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 con-
structed 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 disassem-
bled for storage and reassembled
to its original integrity.

SAVE THESE 

INSTRUCTIONS

 


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4

INSTALLATION

Only qualified, licensed personnel should install pump and wiring.

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 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.)
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 col-
lect 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

1

to seal connections. Do 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.

1

Lake Chemical Co., Chicago, Illinois

STRAINER BASKET

COVER

DISCHARGE PORT

TO FILTER OR POOL

SUCTION

PORT

FROM

POOL

OR

VACUUM

FILTERS

PUMP MAY BE BOLTED TO LEVEL

FOUNDATION OR MOUNTING BRACKET

037 0893

NOTICE: 

Port threads

are: Internal - 2" NPT
for direct connection to
pipe. External - 3-1/4"
Buttress. Fits Sta-Rite
U11-200P Union Collar
for quick disconnect
pipe connection.

See Page 14 for Union
Kits.

Figure 1

 


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5

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 addi-
tional 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 inde-
pendently. 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 hazardous and can trap and drown or disembowel

bathers. Do not use or operate swimming pools, spas, or hot tubs if a suc-

tion outlet cover is missing, broken, or loose.

Follow the guidelines below for a

pump installation which minimizes risk to users of pools, spas, and hot tubs. 

Entrapment Protection

The pump suction system 

must 

provide protection against the hazard of 

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 2, 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 

one 

main drain (that is, there must be at least two main drains

connected to the pump whenever it is running – see Figure 2, 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 2).

More than one pump can be connected to a single suction line as long as the
requirements above are met.

Hazardous suction.
Can trap hair or
body parts, causing
severe injury
or death.

Do not block
suction.

 


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6

Water Velocity

The maximum water velocity through the suction fitting or cover for any suc-
tion outlet must be 1.5 feet per second unless the outlet complies with the lat-
est ASME/ANSI Specification for 

Suction Fittings For Use in Swimming Pools,

Spas, Hot Tubs, and Whirlpool Bathtub Applications. 

In any case, do not ex-

ceed the suction fitting’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 sec-
ond 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
ASME/ANSI 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 ASME/ANSI 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.

At Least

3 Feet 

Suction Outlet

(Main Drain)

Suction Outlet

(Main Drain)

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

Pump

Valves OK between
pump and Tee

No valves between
Tee and Main Drains

2762 0197

Figure 2 – Recommended pump suction layout.

 


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7

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 volt-

age. 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 compo-
nent life. If voltage is less than 90% or more than 110%
of rated voltage when motor is running at full load, con-
sult power company.

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 Fig.
3); 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 conduc-
tor, size No. 8 AWG (8.4 sq.mm) or larger. Run wire from
external bonding lug (see Fig. 3) to reinforcing rod or mesh.
Connect a No. 8 AWG (8.4 sq.mm) solid copper bond-
ing 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 in-
side walls of swimming pool, spa, or hot tub.

Wiring

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 cir-
cuit; it will sense a short-circuit to ground and discon-
nect power before it becomes dangerous to pool users.
For size of GFCI required and test procedures for GFCI,
see manufacturer’s instruction.

A

A

L2

L2

L1

L1

230V

115V

Bonding
Lug

Green
Ground 
Screw

Figure 3 – Typical ground screw and bonding lug 
locations.

A

B

L2

L1

White 

230
Volt

Lines

Blue

469 0194A

Figure 4A – Wiring connection diagram for single speed,
single voltage motors.

Pull plug 
straight
out from 
terminal
board.

1.

1.

2.

2.

Plug in again
with arrow 
on plug 
pointing to
'115 Volts'.

A

L1

230  V

olts

1

15 

V

olts

A

L1

230  V

olts

1

15 

V

olts

Ground
Screw

3962 0401 A

115 V

230 V

230 Volt to 115 Volt Conversion. 

Move plug to change voltage.

Ground
Screw

230V

115V

230V

115V

A

A

L2

L2

L1

L1

230V

115V

A

A

L2

L2

L1

L1

230V

115V

Power Supply 
Wires

230 Volt to 115 Volt Conversion. 

Move plug to change voltage.

Figure 4B – Wiring connection diagram for 115/230V
dual voltage, single speed motors.

 


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8

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.

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

10.1-3.7

230/60/1

14(2)

14(2)

12(3)

2-1/2

15

11.9-3.5

230/60/1

14(2)

14(2)

12(3)

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)

MPFA SERIES – SINGLE SPEED

3/4

15/15

9.9/5.0

115/230/60/1 14/14(2/2) 10/14(5.5/2) 10/14(5.5/2)

1

20/15

13.4/6.7

115/230/60/1

12/14(3/2) 10/14(5.5/2) 8/14(8.4/2)

1-1/2

20/15

15.3/7.6

115/230/60/1 12/14(3/2) 8/14(8.4/2)

6/14(14/2)

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 – 1/3

15

10.1/3.7

230/60/1

14(2)

14(2)

12(3)

2-1/2 – 1/2

15

11.9/3.5

230/60/1

14(2)

12(3)

12(3)

AWG

Wire

Size

(mm

2

)

}

AWG

Wire

Size

(mm

2

)

}

AWG

Wire

Size

(mm

2

)

}

AWG

Wire

Size

(mm

2

)

}

Power Supply for

Optional Timer. 

Low Spd

High Spd

Circuit

Protector

Remote

SPDT

Switch

Ground (Green)

Common

If using timer, Connect 
Timer Motor  to Low Speed Only

Minimum switch and timer amp rating must equal Branch Fuse
Rating given in "Recommended Fusing and Wiring Data" table.

A

B

L2

L1

230
Volt

Lines

Back of
motor
with 
Terminal
Board

1168 0794

Figure 4C – Wiring connection diagram for 2- speed motors.

NOTICE: 

3 phase

models require mag-
netic motor starters
and external overload
protection. 
If in doubt about the
procedure, consult a
licensed electrician.

 


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9

OPERATION

NOTICE: 

NEVER run pump dry. Running pump dry may damage seals, caus-

ing 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 be-

fore removing trap cover.

Do not block pump suction. 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 high temperatures.

To reduce the risk of fire, do not allow leaves, debris, or foreign matter to col-
lect 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 internal cutoff
switch protects the motor from heat damage during operation.

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
(see Figure 5); fill trap and pump with water.
Clean and inspect O-Ring; reinstall on trap cover.
Do not lubricate the trap cover O-Ring. The original equipment O-Ring con-
tains 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.
Replace trap cover on trap; turn clockwise to tighten cover.

NOTICE: 

Tighten trap cover by hand only 

(no wrenches)!

Pump should prime now. Priming time will depend on vertical length of suc-
tion 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, Pages 12 and 13.

Storage/Winterizing:

NOTICE: 

Allowing pump to freeze will damage pump and void warranty!

NOTICE: Do not 

use anti-freeze solutions (except propylene 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.

TO REMOVE

OVERTIGHT

LID

BOARD

Figure 5 – Use a pry bar or board as
shown to remove tight lid. 

Do not

use a pry bar to tighten lid.

Hazardous suction.
Can trap hair or
body parts, causing
severe injury
or death.

Do not block
suction.

 


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10

For outdoor/unprotected installations:
1. Enclose entire system in a weatherproof enclosure.

2. To avoid condensation/corrosion damage, allow ventilation; 

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

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 and use low pressure air to blow accumulated water

from the piping system. Use a pry bar or board to remove trap covers that
have been overtightened or have taken a set and cannot be removed by
hand. Lugs have been provided on the trap lid to use a lever or pry bar for
loosening (see Figure 6).

3. Cap inlet piping after draining to keep water out of the pipes.

4. To prevent pump from freezing, 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.

Startup For Winterized Equipment

1. Remove any temporary weather protection placed around system for shut-

down.

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.

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.

TO REMOVE

OVERTIGHT

LID

BOARD

Hazardous voltage.
Can shock, burn,
or cause death.

Disconnect power
before working
on pump or motor.

Figure 6 – Use a pry bar or board as
shown to remove tight lid. 

Do not

use a pry bar to tighten lid.

 


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11

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 mainte-
nance is needed beyond reasonable care and periodic cleaning of strainer
basket.
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 turn-

ing 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 capacitor 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 

(Fig. 7).

10. Remove slinger from motor shaft and inspect for damage or abrasion.

11. Clean seal cavity in seal plate and clean motor shaft.

Mechanical seal

ceramic seat

Hazardous voltage.
Can shock, burn,
or cause death.

Disconnect power
before working
on pump or motor.

Figure 7

 


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12

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 (Fig. 8).

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 surface 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 diameter 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 automatically locate seal in

seal plate.

NOTICE:

On 2 and 2-1/2 HP models; install impeller gasket and lock

screw (left-hand thread - turn counterclockwise). 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.

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 gasket 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.

Polished

surface

Rubber

surface

Hazardous voltage.
Can shock, burn,
or cause death.

Disconnect power
before working
on pump or motor.

Figure 8

 


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13

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 12, for reassembly).

9. Impeller and diffuser may be worn. If so, order replacement parts from

Repair Parts List, Pages 14 and 15.

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 less than 90% or more than 110% of rated volt-

age 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 as-

sembly will be strained. See “Installation”, Page 4.

2. Do not mount pump on a wooden platform! Securely mount on concrete

platform for quietest performance.

 


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14

1

2 3

4

5

6

7

8

8A

8B

See

Box A

See

Box A

11

12

13

14

15B

15A

16

17

18

19

20

21

22

23

24

9

10

1169 0794

REPAIR PARTS LIST

DYNA-GLAS™ & DYNA-MAX™ POOL PUMP

3/4 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-146L

3/4

A100DLL

MPRA6E-147L

1

A100ELL

MPRA6F-148L

1-1/2

A100FLL

MPEA6D-146L

3/4

AE100DLL

MPEA6E-147L

1

AE100ELL

MPEA6F-148L

1-1/2

AE100FLL

MPFA6D-176L

3/4

A100DLL

MPFA6E-146L

1

A100ELL

MPFA6F-147L

1-1/2

A100FLL

230/60/1

MPRA6G-155L

2

A100GLL

MPEA6G-155L

2

AE100GLL

MPEAA6G-168L

2-1/2

AE100G5LL

Two Speed 230/60/1

MPRA6YF-174L

1-1/2

A100FLL-Y

MPRA6YF-174LS

1-1/2

A100FLL-Y

MPEA6YG-175L

2

AE100GLL-Y

MPEA6YG-175LS

2

AE100GLL-Y

MPEAA6YG-168L

2-1/2

AE100G5LL-Y

MPEAA6YG-168LS

2-1/2

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:
U11-200P Union Collar
U9-362 O-Ring
U11-196P 2" Slip adapter or
U11-199P 2" NPT adapter.

Box A

 


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15

MPEA6F-148L
MPFA6F-147L

MPEA6G-155L

MPFA6D-176L

MPEA6E-147L

MPRA6F-148L  

MPRA6G-155L

MPEA6D-146L

MPFA6E-146L

MPRA6F-148LC

MPR6G-155LC

MPEAA6G-168L

MPRA6D-146L MPRA6E-147L MPRA6YF-174L

MPEA6YG-175L MPEAA6YG-168L

Key

Part

MPRA6D-146LC

MPRA6E-147LC

MPRA6YF-174LS MPEA6YG-175LS MPEAA6YG-168LS

No.

Description

Qty.

3/4 HP

1 HP

1-1/2 HP

2 HP

2-1/2 HP

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 (MPFA, MPRA Series)

1

17351-0009

17351-0009

17351-0009

17351-0009

17351-0009

4

Slinger (MPEA Series)

1

C69-24

C69-24

C69-24

C69-24

C69-24

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

8

Impeller (MPRA6Y, MPEA6Y 

and MPEAA6Y only)

1

C105-236PF

C105-236PGAB

C105-236PEA

8

Impeller (MPFA6D, MPFA6E, MPFA6F only)

1

C105-236PJ

C105-236P

C105-236PB

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

C76-58P

C76-58P

C76-58P

C76-58P

C76-58P

12

Trap Cover

1

C3-185P

C3-185P

C3-185P

C3-185P

C3-185P

13

Trap Cover “O” Ring

1

U9-375

U9-375

U9-375

U9-375

U9-375

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

Base - Steel (LS Suffix)

1

17303-0113

17303-0113

17303-0113

17

Motor Pad - for Plastic Base

1

C35-45

C35-45

C35-45

C35-45

C35-45

17

Motor Pad - for Steel Base (LS Suffix)

1

C35-5

C35-5

C35-5

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

U36-38SS

U36-38SS

U36-38SS

U36-38SS

U36-38SS

23

Cap Screws 3/8-16x1-1/4" Hex. (LS Suffix)

2

U30-75SS

U30-75SS

U30-75SS

Lock Washer 3/8” (LS Suffix)

2

U43-12SS

U43-12SS

U43-12SS

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

61002-0002

61002-0002

61002-0002

61002-0002

61002-0002

mechanical shaft seal…”

Voltage Sticker

1

U27-153

U27-153

U27-153

U27-68

U27-68

Decal “Overtight trap lid…”

1

U27-644

U27-644

U27-644

U27-644

U27-644

Tag, “WARNING/CAUTION/Instructions...”

1

C63-12

C63-12

C63-12

C63-12

C63-12

REPAIR PARTS LIST

DYNA-GLAS™ & DYNA-MAX™ POOL PUMP

3/4 through 2-1/2 HP Models Single Speed and Two Speed

• Not illustrated.
* Models with “LS” suffix use 2 only.

 


background image

Retain Warranty Certificate (upper portion) in a safe and convenient location for your records.

DETACH HERE: Fill out bottom portion completely and mail within 10 days of purchase/installation to:

▼   

Sta-Rite, Attn: Warranty Dept., 293 Wright St., Delavan, WI 53115 

Pumps, filters, skimmers, underwater lights (except bulbs),
accessories and fittings manufactured by Sta-Rite are war-
ranted to be free of defects in material and workmanship for
one (1) year from date of installation.

Product specific warranties: 

Year from date 

of installation

HRPB, DEPB, System 3, and PL

– Tanks  . . . . . . . .10 years

Internal filter components and valves   . . . . . . . . . 1 year

Max-E-Therm

– Pool/Spa Heaters   . . . . . . . . . . . . . 2 years

Heater Enclosure only (Upper RH & LH; 
lower enclosure; and control board enclosure)… 10 years

Automatic Pool Cleaners including Hose

 . . . . . . . 2 years 

Cristal-Flo filters

– Tanks . . . . . . . . . . . .10 years pro-rated* 

Valve and internal components.  . . . . . . . . . . . . . . 1 year

Posi-Flo II

– Tanks  . . . . . . . . . . . . . . . . . . . . . . . . .10 years 

Elements  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 year

PRC Cartridge

– 

Filter Tanks . . . . . . . . . .5 years pro-rated (1st 2 years full) 
Elements  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 year

System 3 Above Ground Systems 

– Tanks  . . . . . . .10 years 

Pumps / Platform and Internals  . . . . . . . . . . . . . . . 1 year

Pumps  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1 year

When equipped with A.O. Smith 
2-compartment motors (Does not include
pumps sold as part of a systems package)  . . . . . . 2 years

Traps / In-Line Strainers

 . . . . . . . . . . . . . . . . . . . . . 1 year 

Vertical Commercial Filter

– Tanks  . . . . . . . . . . . .10 years 

Internals  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 year

Horizontal Commercial Filter

Tanks  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 years
(Years 6-9, Prorated declining 20%/year, Yr. 10 - 10%)
Internals  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 year

* Full warranty coverage is in effect for one year after instal-
lation. The pro-rated warranty covers the 

tank only

during

the 2nd through 10th year after installation. The amount cov-
ered decreases by 10% each year. (ie., 2nd year 90% covered,
3rd year 80% covered, etc.).

The foregoing warranties relate to the original consumer pur-
chaser (“Purchaser”) only. Sta-Rite shall have the option to re-
pair or replace the defective product, at its sole discre-

tion. Purchasers must pay all labor and shipping charges nec-
essary to replace the product covered by this warranty.
Requests for warranty service must be made through the in-
stalling dealer. This warranty shall not apply to any product
that has been subject to negligence, misapplication, improper
installation or maintenance, or other circumstances which are
not in Sta-Rite’s direct control.

This warranty sets forth Sta-Rite’s sole obligation and
Purchaser’s exclusive remedy for defective products.

STA-RITE SHALL NOT BE LIABLE FOR ANY CONSEQUENTIAL,
INCIDENTAL OR CONTINGENT DAMAGES WHATSOEVER.

THE FOREGOING WARRANTIES ARE EXCLUSIVE AND IN
LIEU OF ALL OTHER EXPRESS WARRANTIES. IMPLIED WAR-
RANTIES, INCLUDING BUT NOT LIMITED TO THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE, SHALL NOT EXTEND BEYOND THE
DURATION OF THE APPLICABLE EXPRESS WARRANTIES
PROVIDED HEREIN.

Some states do not allow the exclusion or limitation of inci-
dental or consequential damages or limitations on how long
an implied warranty lasts, so the above limitations or exclu-
sion may not apply to you. This warranty gives you specific
legal rights and you may also have other rights which vary
from state to state.

Supersedes all previous publications.

Sta-Rite Industries, Inc., 
293 Wright St., Delavan, WI 53115

Warranty Registration Card

Name 

Address 

City State 

Zip 

Purchase Date 

Product Purchased 

New installation 

Replacement

Type of Pool

Inground 

Vinyl

Fiberglass

Gunite

Size of Pool 

Years pool has been in service    

less than 1    

1-3    

3-5    

5-10

Purchased from: 

Company name

Address 

City State 

Zip 

Please send me more information on these 

other products from Sta-Rite.

Pumps    

Filters   

Automatic Pool Cleaners

Maintenance Equipment    

Test Strips

Heaters

S4877PS (Rev. 1/22/01)

STA-RITE LIMITED WARRANTY