STA-RITE LT Series Manuale utente

“LT” SERIES

CENTRIFUGAL PUMPS

O W N E R’ S M A N U A L

INSTALLATION, OPERATION & PARTS

MODELS

1/6 HP LT1/6L

1/2 HP LTACL

3/4 HP LTADL

3/4-1/8 HP LTAYDRL

Sta-Rite Pool/Spa Group

293 Wright Street, Delavan, WI 53115

International: 262-728-5551, FAX: 262-728-7550

www.starite.com

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

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.

‘

LT’ SERIES CENTRIFUGAL PUMP

To avoid unneeded service calls, prevent possible injuries, and get the most

out of your pump, READ THIS MANUAL CAREFULLY!

The Sta-Rite ‘LT’ Series pump:

• Is designed to circulate water in above ground swimming pools, and in

spas, hot tubs, and solar systems.

• Is an excellent performer; durable, reliable, with non-clogging impeller.

Table of Contents

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

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

Electrical....................................................................................................5-6

Operation .....................................................................................................7

Storage/Winterizing ...................................................................................7-8

Pump Service...........................................................................................9-10

Troubleshooting Guide ...............................................................................11

Repair Parts List .....................................................................................12-15

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

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/cm2).

•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.

NOTICE: These parameters apply to Sta-Rite equipment only. For

non-Sta-Rite equipment, consult manufacturer.

Motor normally operates at high temperature and will be too hot

to touch. It is protected from heat damage during operation by an automatic in-

ternal cut off switch. Before handling pump or motor, stop motor and allow it

to cool for twenty minutes.

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

INSTALLATION

Only qualified, licensed personnel should install pump and wiring.

Pump mount must:

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.

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.

NOTICE: Use Teflon tape or Plasto-Joint Stik1 for making all threaded

connections to the pump. Do not use pipe dope; pipe dope will cause stress

cracking in the pump.

NOTICE: Pump suction and discharge connections have molded in thread

stops. DO NOT try to screw pipe in beyond these stops.

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!

1Lake Chemical Co., Chicago, Illinois

FIGURE 1

Piping:

Use at least 1-1/4" (32mm) IPS PVC. 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.

Never use a suction pipe smaller than pump suction connection.

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.

Fittings:

Fittings restrict flow; for best efficiency use fewest possible fittings.

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 (115 Volt single

phase only). 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 name-

plate rated voltage or motor may overheat, causing overload tripping and re-

duced 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.

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 2); 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 2) to

reinforcing rod or mesh.

Hazardous voltage.

Can shock, burn,

or cause death.

Ground pump before

connecting to

power supply.

BONDING

LUG

MOTOR NAMEPLATE

GREEN

GROUND

SCREW

MOTOR

CANOPY

THROUGH

BOLTS 499 0993

Figure 2 – 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

Pump must be permanently connected to circuit. Table I gives 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 manufac-

turer’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.

Values given in table below are for PUMP ONLY. If additional acces-

sories are installed on pump motor circuit (heater, blower, etc.), in-

clude their amerage draw when figuring wire and circuit breaker sizes.

White

230

Volt

Lines

Blue

SINGLE

VOLTAGE

MOTORS

DUAL

VOLTAGE

MOTORS

White

w/Black

Tracer

Black

115

Volt

Lines

White

w/Black

Tracer

Black

230

Volt

Lines

Motor Terminal Board Connections

Figure 3A – Wiring hook-up diagram.

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.

Back of

motor

with

Terminal

Board

4213 0602

115 Volt

Lines

Figure 3B – Remote switching for 115V 2-Speed pumps. Timer supply should be

unswitched.

TABLE I - RECOMMENDED FUSING AND WIRING DATA – 60 Cycle Motors

Serv. to Motor - Dist. in Ft. (M)

Pump Motor Branch Fuse Max Load Voltage/ 0-100' 101-200' 201-300'

Model HP Rating Amps* Amps Hz/Phase (0-30M) (30-60M) (60-90M)

LT1/6L 1/6 15 4.5 115/60/1 14(2) 14(2) 14(2)

LTACL 1/2 15 8.4 115/60/1 14(2) 12(3) 10(5.5)

LTADL 3/4 15 11.4 115/60/1 14(2) 10(5.5) 8(8.4)

LTAYDRL 3/4-1/8 15 10.0-3.0 115/60/1 14(2) 12(3) 10(5.5)

* Branch Short Circuit Protection (Non Time-Delay Fuse).

OPERATION

NEVER run pump dry. Running pump dry may damage seals, causing leakage

and flooding. Fill pump with water before starting motor.

Do not add chemicals to spa system directly in front of pump suction.

Adding undiluted chemicals may damage pump and voids warranty.

Open gate valves before starting system.

Pump will prime itself when used in flooded suction system.

Be sure to release all air from filter and piping system; see spa/filter owner’s

manual.

On 2-Speed models, low speed is used for filtration and heating; high speed

provides therapy jet action.

Do not block pump suction. To do so with body may cause severe or

fatal injury. Small children using spa must ALWAYS have close adult

supervision.

•Tub should have dual suction outlets to prevent body or hair entrapment.

•Use only tub suction fittings certified to meet ASME/ANSI standard

A112.19.8M-1987.

NOTICE: Do not block pool return or spa jets! To do so may flood area caus-

ing damage to equipment and water damage to surrounding area.

Spa or Tub Water:

Keep water level at least two inches above bottom of skimmer opening when

system is not in use. Failure to do so can allow air to enter system, causing

pump to lose its prime.

Keep water temperature at 104°F (40°C) or below.

Age or health conditions may require a lower temperature; consult a physi-

cian for more information.

If in doubt, start at a lower temperature and gradually increase it according to

your experience.

Keep an accurate thermometer in bath; check it before getting in.

Do not use or allow the use of the spa by anyone using alcohol or

drugs. The effects of hot water, alcohol and/or drugs can cause dizzi-

ness and falling, loss of consciousness, or heart attack.

A long bath in hot water may cause hyperthermia (too much heat in

the body) which can be fatal. Some symtoms of hyperthermia are:

• Nausea

• Dizziness

• Fainting

If these symptoms appear while in the spa, GET OUT AT ONCE!

Cool the body at once with cold towels or a cool shower.

Call a doctor if symtoms do not go away.

Hazardous suction.

Can trap hair or

body parts, causing

severe injury

or death.

Do not block

suction.

Too much heat

can cause nausea,

dizziness, fainting or

death.

Check temperature

before using spa.

Draining Pump

To avoid dangerous or fatal electrical shock hazard, turn OFF power to

motor before draining pump.

Storage/Winterizing:

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.

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 is non-toxic and will not damage plastic

system components; other anti-freezes are highly toxic and may also 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.

For outdoor/unprotected installations:

1. Gravity drain system as far as possible.

2. Protect areas which retain water with non-toxic propylene glycol antifreeze

(“RV antifreeze”).

3. Enclose entire system in a weatherproof enclosure.

4. To avoid condensation/corrosion damage, allow ventilation; do not wrap

system in plastic.

5. Use a 40% propylene glycol/60% water solution to protect pump to

-50 degrees F (-46 degrees C).

Startup For Winterized Equipment

1. Remove any temporary weather protection placed around system.

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 7.

PUMP SERVICE

To avoid dangerous or fatal electrical shock hazard, turn OFF power to

motor before working on pump or motor.

No lubrication or regular maintenance is needed beyond reasonable care and

periodic cleaning.

Hazardous voltage.

Can shock, burn,

or cause death.

Disconnect power

before working

on pump or motor.

Hazardous voltage.

If shaft seal is damaged, repair as follows:

Removing Old Seal

1. Disconnect power to pump motor.

2. Drain water to below level of suction and discharge piping and discon-

nect pipes from pump body.

3. Remove nine capscrews, Key No. 10, Page 11, from pump body,

Key No. 8.

4. Remove pump body from seal plate, Key No. 3. Use care to not damage

gasket, Key No. 4, when opening pump body. If damaged, replace.

5. Remove cover from end of motor to expose shaft and electrical

components.

6. Place a 7/16” open end wrench on flats of motor shaft at cover end below

centrifugal switch mechanism. Hold shaft, and when looking at impeller,

turn impeller clockwise and remove from shaft.

7. Unscrew four through-bolts under motor cover to remove seal plate from

motor.

8. Drive stationary part of shaft seal out of seal plate using rigid tubing or

pipe as shown in Figure 4.

9. Clean seal plate cavity and motor shaft.

Installing New Seal

1. Coat seal cup with Sealastic #732 RTV sealant before pressing seal into

seal cavity. Press into place with a tube or pipe of correct diameter to

press on seal cup rim only, as shown in Figure 5.

2. Pry loose the ceramic seal seat in back of impeller, using screwdriver be-

tween seat and cavity in impeller as shown in Figure 6. Clean cavity from

which seat was removed.

3. Lubricate O-Ring on seal seat with liquid soap solution. Press seat into im-

peller cavity with polished face up as shown in Figure 7. Use cardboard

disc or large washer to protect surface of ceramic seat of new seal.

BE SURE you do not scratch or nick seal surface.

4. To Reassemble pump, reverse steps one through seven. See Exploded

View, Page 11.

Figure 4

Figure 5

Figure 6

Figure 7

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!

Pump does not operate:

1. Check GFCI for proper operation according to GFCI manufacturer’s instru-

tions.

2. Check for plugged impeller. Follow disassembly/assembly instructions

under “Pump Service”, Page 8.

3. Consult dealer/installer or service representative.

Inadequate circulation or jet action:

1. Check for blocked fittings. Block fittings will cause poor flow and poor jet

action.

2. Consult dealer/installer or service representative.

Excessive air in system - pump loses prime:

1. Make sure water level is at least 2” (51mm) above top of jets with system

not operating.

2. Make sure there are no leaks in suction piping.

3. Make sure ther is no vortex (whirlpool) at the suction.

4. Consult dealer/installer or service representative.

Circuit breaker in home panel trips repeatedly:

1. Breaker must be of adequate capacity.

2. For GFCI breaker: test according to GFCI manufacturer’s instructions.

3. Be sure no other lights and appliances are on circuit.

4. Consult dealer/installer or service representative.

Mechanical troubles and noise:

1. If pump 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 a con-

crete platform for quietest performance.

3. Air leak in suction line (bubbles in water returning to pool). Repair leak.

Tighten trap lid.

4. Foreign matter (gravel, metal, etc.) in pump impeller. Disassemble pump,

clean impeller, follow “Pump Serivce” instructions on Page 8 for

reassembly.

5. Cavitation.

Improve suction conditions by increasing pipe size, decreasing number of

fittings. Increase discharge pressure (reduce flow by throttling discharge

gate valve).

Hazardous voltage.

Can shock, burn,

or cause death.

Disconnect power

before working

on pump or motor.

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