Pentair WATERFALL AFP-75, WATERFALL AFP-150, WATERFALL AF-120, WATERFALL AF-75, WATERFALL AFP-120 Installation And User Manual

ENGLISH

WATERFALL™

SPECIALTY PUMP

ESPAÑOL

FRANÇAIS

INSTALLATION AND

USER’S GUIDE

IMPORTANT SAFETY INSTRUCTIONS

READ AND FOLLOW ALL INSTRUCTIONS

SAVE THESE INSTRUCTIONS

WATERFALL™ Specialty Pump Installation and User’s Guide

CUSTOMER SERVICE / TECHNICAL SUPPORT

If you have questions about ordering Pentair replacement parts, and pool products, please contact:

Customer Service and Technical Support, USA (8 A.M. to 7:30 P.M. — Eastern Time) Phone: (800) 831-7133 Fax: (800) 284-4151

Web site

Visit www.pentair.com for more information about Pentair pool products.

TABLE OF CONTENTS

Important Pump Warning and

Safety Instructions ...............................................

Introduction ..........................................................

Pump Overview Pump Strainer Basket

Installation ............................................................

Location

Selection of Pump and Piping Piping, Fitting and Valve Installation Electrical Installation

Wiring Grounding Bonding

Operating the Pump .............................................

Initial Start-Up

Maintenance .........................................................

Cleaning the Strainer Basket

Winterizing

Motor Care

Sanford, North Carolina (8 A.M. to 4:30 P.M. ET) Phone: (919) 566-8000 Fax: (919) 566-8920

Moorpark, California (8 A.M. to 4:30 P.M. PT) Phone: (805) 553-5000 (Ext. 5591) Fax: (805) 553-5515

Servicing .............................................................

ii 1

1 1

2 2 3 4 4 4 4

6 7 7

Pump Disassembly Shaft Seal Replacement Pump Reassembly

Restart Instructions ...........................................

Priming the Pump

Troubleshooting .................................................

Replacement Parts .............................................

8 9 10

12 13

P/N 355143 Rev. D 5/17/19

WATERFALL™ Specialty Pump Installation and User’s Guide

ENGLISH

IMPORTANT PUMP WARNING AND SAFETY INSTRUCTIONS

IMPORTANT NOTICE

This guide provides installation and operation instructions for this pump. Consult Pentair with any questions regarding this equipment.

Attention Installer: This guide contains important information about the installation, operation and safe use of this product. This information should be given to the owner and/or operator of this equipment after installation or left on or near the pump.

Attention User: This manual contains important information that will help you in operating and maintaining this product. Please retain it for future reference.

READ AND FOLLOW ALL INSTRUCTIONS

SAVE THESE 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 can cause death, serious personal injury, or major property damage if ignored.

Warns about hazards that may cause death, serious personal injury, or major property damage if ignored.

Warns about hazards that may or can cause minor personal injury or property damage if ignored.

NOTE Indicates special instructions not related to hazards.

Carefully read and follow all safety instructions in this manual and on equipment. Keep safety labels in good condition; replace if missing or damaged.

When installing and using this electrical equipment, basic safety precautions should always be followed, include the following:

Do not permit children to use this product.

RISK OF ELECTRICAL SHOCK. Connect only to

a branch circuit protected by a ground-fault circuitinterrupter (GFCI). Contact a qualiﬁed electrician if you cannot verify that the circuit is protected by a GFCI.

This unit must be connected only to a supply circuit

that is protected by a ground-fault circuit-interrupter (GFCI). Such a GFCI should be provided by the installer and should be tested on a routine basis. To test the GFCI, push the test button. The GFCI should interrupt power. Push the reset button. Power should be restored. If the GFCI fails to operate in this manner, the GFCI is defective. If the GFCI interrupts power to the pump without the test button being pushed, a ground current is ﬂowing, indicating the possibility of an electric shock. Do not use this pump. Disconnect the pump and have the problem corrected by a qualiﬁed service representative before using.

This pump is for use with permanent swimming

pools and may also be used with hot tubs and spas if so marked. Do not use with storable pools. A permanently-installed pool is constructed in or on the ground or in a building such that it cannot be readily disassembled for storage. A storable pool is constructed so that it is capable of being readily disassembled for storage and reassembled to its original integrity.

General Warnings

• Never open the inside of the drive motor enclosure. There is a capacitor bank that holds a 230 VAC charge even when there is no power to the unit.

• The pump is not submersible.

• The pump is capable of high ﬂow rates; use caution when installing and programming to limit pumps performance potential with old or questionable equipment.

• Code requirements for electrical connection differ from country to country, state to state, as well as local municipalities. Install equipment in accordance with the National Electrical Code and all applicable local codes and ordinances.

• Before servicing the pump; switch OFF power to the pump by disconnecting the main circuit to the pump.

• This appliance is not intended for use by persons (including children) of reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning the use of the appliance by a person responsible for their safety.

FAILURE TO FOLLOW ALL INSTRUCTIONS AND WARNINGS CAN RESULT IN SERIOUS BODILY

INJURY OR DEATH. THIS PUMP SHOULD BE INSTALLED AND

SERVICED ONLY BY A QUALIFIED POOL SERVICE PROFESSIONAL. INSTALLERS, POOL OPERATORS AND OWNERS MUST READ THESE WARNINGS AND ALL INSTRUCTIONS IN THE OWNER’S MANUAL BEFORE USING THIS PUMP. THESE WARNINGS AND THE OWNER’S MANUAL MUST BE LEFT WITH THE POOL OWNER.

SUCTION ENTRAPMENT HAZARD: STAY OFF THE MAIN DRAIN AND AWAY FROM ALL SUCTION OUTLETS!

THIS PUMP PRODUCES HIGH LEVELS OF SUCTION AND CREATES A STRONG VACUUM AT THE MAIN DRAIN AT THE BOTTOM OF THE BODY OF WATER. THIS SUCTION IS SO STRONG THAT IT CAN TRAP ADULTS OR CHILDREN UNDER WATER IF THEY COME IN CLOSE PROXIMITY TO A DRAIN OR A LOOSE OR BROKEN DRAIN COVER OR GRATE.

THE USE OF UNAPPROVED COVERS OR ALLOWING USE OF THE POOL OR SPA WHEN COVERS ARE MISSING, CRACKED OR BROKEN CAN RESULT IN BODY OR LIMB ENTRAPMENT, HAIR ENTANGLEMENT, BODY ENTRAPMENT, EVISCERATION AND/OR DEATH.

The suction at a drain or outlet can cause: Limb Entrapment: When a limb is sucked or inserted into an opening

resulting in a mechanical bind or swelling. This hazard is present when a drain cover is missing, broken, loose, cracked or not properly secured.

Hair Entanglement: When the hair tangles or knots in the drain cover, trapping the swimmer underwater. This hazard is present when the ﬂow rating of the cover is too small for the pump or pumps.

Body Entrapment: When a portion of the body is held against the drain cover trapping the swimmer underwater. This hazard is present when the drain cover is missing, broken or the cover ﬂow rating is not high enough for the pump or pumps.

Evisceration/Disembowelment: When a person sits on an open pool (particularly a child wading pool) or spa outlet and suction is applied directly to the intestines, causing severe intestinal damage. This hazard is present when the drain cover is missing, loose, cracked, or not properly secured.

WATERFALL™ Specialty Pump Installation and User’s Guide

iii

IMPORTANT PUMP WARNING AND SAFETY INSTRUCTIONS

Mechanical Entrapment: When jewelry, swimsuit, hair decorations, ﬁnger,

toe or knuckle is caught in an opening of an outlet or drain cover. This hazard is present when the drain cover is missing, broken, loose, cracked, or not properly secured.

NOTE: ALL SUCTION PLUMBING MUST BE INSTALLED IN ACCORDANCE WITH THE LATEST NATIONAL AND LOCAL CODES, STANDARDS AND GUIDELINES.

TO MINIMIZE THE RISK OF INJURY DUE TO SUCTION ENTRAPMENT HAZARD:

• A properly installed and secured ANSI/ASME A112.19.8 approved anti-entrapment suction cover must be used for each drain.

• Each suction cover must be installed at least three (3’) feet apart, as measured from the nearest point to nearest point.

• Regularly inspect all covers for cracks, damage and advanced weathering.

• If a cover becomes loose, cracked, damaged, broken or is missing, replace with an appropriate certiﬁed cover.

• Replace drain covers as necessary. Drain covers deteriorate over time due to exposure to sunlight and weather.

• Avoid getting hair, limbs or body in close proximity to any suction cover, pool drain or outlet.

• Disable suction outlets or reconﬁgure into return inlets.

A clearly labeled emergency shut-off switch for the pump must be in an easily accessible, obvious place.

Make sure users know where it is and how to use it in case of emergency.

The Virginia Graeme Baker (VGB) Pool and Spa Safety Act creates new requirements for owners and operators of commercial swimming pools and spas.

Commercial pools or spas constructed on or after December 19, 2008, shall utilize:

(A) A multiple main drain system without isolation capability with suction outlet covers that meet ASME/ANSI A112.19.8a Suction Fittings for Use in Swimming Pools, Wading Pools, Spas, and Hot Tubs and either:

(i) A safety vacuum release system (SVRS) meeting ASME/ANSI A112.19.17 Manufactured Safety Vacuum Release systems (SVRS) for Residential and Commercial Swimming Pool, Spa, Hot Tub, and Wading Pool Suction Systems and/or ASTM F2387 Standard Speciﬁcation for Manufactured Safety Vacuum Release Systems (SVRS) for Swimming pools, Spas and Hot Tubs or

(ii) A properly designed and tested suction-limiting vent system or (iii) An automatic pump shut-off system.

Commercial pools and spas constructed prior to December 19, 2008, with a single submerged suction outlet shall use a suction outlet cover that meets ASME/ANSI A112.19.8a and either:

(A) A SVRS meeting ASME/ANSI A112.19.17 and/or ASTM F2387, or (B) A properly designed and tested suction-limiting vent system, or (C) An automatic pump shut-off system, or (D) Disabled submerged outlets, or (E) Suction outlets shall be reconﬁgured into return inlets.

For Installation of Electrical Controls at Equipment Pad (ON/OFF Switches, Timers and Automation Load Center)

Install all electrical controls at equipment pad, such as on/off switches, timers, and control systems, etc. to allow the operation (startup, shut-down, or servicing) of any pump or ﬁlter so the user does not place any portion of his/her body over or near the pump strainer lid, ﬁlter lid or valve closures. This installation should allow the user enough space to stand clear of the ﬁlter

and pump during system start-up, shut down or servicing of the system ﬁlter.

HAZARDOUS PRESSURE: STAND CLEAR OF PUMP AND FILTER DURING START UP

Circulation systems operate under high pressure. When any part of the circulating system (i.e. locking ring, pump, ﬁlter, valves, etc.) is serviced,

air can enter the system and become pressurized. Pressurized air can cause the pump housing cover, ﬁlter lid, and valves to violently separate which can result in severe personal injury or death. Filter tank lid and strainer cover must be properly secured to prevent violent separation. Stand clear of all circulation system equipment when turning on or starting up pump.

Before servicing equipment, make note of the ﬁlter pressure. Be sure that all controls are set to ensure the system cannot inadvertently start during service. Turn off all power to the pump. IMPORTANT: Place ﬁlter

manual air relief valve in the open position and wait for all pressure in the system to be relieved.

Before starting the system, fully open the manual air relief valve and place all system valves in the “open” position to allow water to ﬂow freely from the tank and back to the tank. Stand clear of all equipment and start the pump.

IMPORTANT: Do not close ﬁlter manual air relief valve until all pressure has been discharged from the valve and a steady stream of water appears. Observe ﬁlter pressure gauge and be sure it is not

higher than the pre-service condition.

General Installation Information

• All work must be performed by a qualiﬁed service professional, and

must conform to all national, state, and local codes.

• Install to provide drainage of compartment for electrical components.

• These instructions contain information for a variety of pump models

and therefore some instructions may not apply to a speciﬁc model. All models are intended for use in swimming pool applications. The pump will function correctly only if it is properly sized to the speciﬁc application and properly installed.

Pumps improperly sized or installed or used in

applications other than for which the pump was intended can result in severe personal injury or death. These risks may include but not be limited to electric shock, ﬁre, ﬂooding, suction entrapment or severe injury or property damage caused by a structural failure of the pump or other system component.

The pump can produce high levels of suction within

the suction side of the plumbing system. These high levels of suction can pose a risk if a person comes within the close proximity of the suction openings. A person can be seriously injured by this high level of vacuum or may become trapped and drown. It is absolutely critical that the suction plumbing be installed in accordance with the latest national and local codes for swimming pools.

Pumps and replacement motors that are single speed and one (1) Total HP or greater cannot be sold, offered for sale, or installed in a residential pool for ﬁltration use in California, Title 20 CCR sections 1601-1609.

Warnings and safety instructions for Pentair Aquatic Systems pumps and other related products are available at: http://www.pentairpool.com/pool-owner/safety-warnings/ or call (800) 831-7133 for additional free copies of these instructions. Please refer to http://www.pentairpool.com/pool-owner/safety- warnings/ for warning and safety instructions related to the this product.

Warning Page P/N 352557 Rev. C 7/18

WATERFALL™ Specialty Pump Installation and User’s Guide

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INTRODUCTION

Pump Overview

Typical pool pumps are designed to circulate water through relatively high loss plumbing systems that include many plumbing restrictions (i.e. pool ﬁlter, valves, heater, small plumbing ﬁttings, etc.) and therefore must produce a signiﬁcant amount of pressure to push the water through all the components. If installed on plumbing systems that do not have these types of plumbing restrictions, pool pumps will often operate very noisily and sometimes cause damage to the system via cavitation.

The Waterfall™ Specialty Pump is speciﬁcally intended for these kind of applications, where quiet and efﬁcient delivery of water through low-restriction plumbing systems is required. These applications often require a pump to create some visual effect such as a waterfall, cascade or spillway, or when water must be moved a relatively short distance.

This pump is not intended to be used in typical pool ﬁltration pump or spa applications where pressure is required. It is also not intended for use in systems that require water to be elevated more than 5 ft. (1.5 m) above the pool reservoir.

Strainer

Basket

Waterfall Specialty Pump

Pump Strainer Basket

The strainer basket, sometimes referred to as the ‘Hair and Lint Pot’, is located in front of the pump housing. Inside the chamber is the basket which must be kept clean of leaves and debris at all times.

Regardless of the length of time between ﬁlter cleaning, it is important to visually inspect the hair and lint pot basket at least once a week. A dirty basket will reduce the efﬁciency of the ﬁlter and heater and also put an abnormal stress on the pump motor.

WATERFALL™ Specialty Pump Installation and User’s Guide

3 IN.

(7.6 CM)

MINIMUM

REAR CLEARANCE

5x SUCTION

PIPE DIAMETER

ELBOW

12 IN. (30.5 CM) MIN. VERTICAL

CLEARANCE

INSTALLATION

Location

Be sure the Waterfall™ Specialty Pump location meets the following requirements:

Note: Do not install this pump within an outer enclosure or beneath the skirt of a hot tub or spa unless marked accordingly.

1. Install the pump as close to the pool or spa as possible. To reduce friction loss and improve efﬁciency use short, direct suction piping returns.

2. Install a minimum of 5 feet (1.5 meters) from the inside wall of the pool or spa. Canadian installations require a minimum of 9.8 feet (3 meters) from pool water.

3. Install the pump a minimum of 3 feet (0.9 meters) from the heater outlet.

4. Do not install the pump more than 5 feet (1.5 m) above the water level.

5. Install the pump in a well ventilated location protected from excessive moisture (i.e., rain gutter downspouts, sprinklers, etc.).

6. Install the pump with a rear clearance of at least 3 inches (7.6 cm) so that the motor can be removed easily for maintenance and repair. A vertical clearance of 12 inches (30.5 cm) is required for strainer basket removal. See

Figure 1.

Figure 1

Selection of Pump and Piping

Many installations require that the pump elevate the water several feet to supply a waterfall or similar water feature. This lifting requires energy and therefore reduces the amount of ﬂow the pump can deliver. See Table 1 for estimates on ﬂow loss.

It is always recommended that the total system head loss be calculated and compared to the pump performance curve before the pump and plumbing sizes are selected. However, Table 2 can be used as a quick guide to pump selection and pipe sizing on simple installations.

Table 1: Effect of Elevation Change on Flow

Elevation

Change

Under 2’

2’ - 4’

4’ - 10’

10’ - 15’

Above 15’

Effect on Flow

Negligible reduction in ﬂow if plumbed according to guidelines.

Slight reduction in ﬂow if plumbed according to guidelines.

Flow reduced to 50-90% of maximum rating, depending on exact elevation and system installation. Must determine plumbing system head loss to estimate ﬂow.

Not usually recommended. Flow may be reduced to 50% or less of maximum rating. This loss may be acceptable in certain low-ﬂow applications.

Not recommended. No ﬂow possible above 27’ of elevation change.

Table 2: Plumbing Size Recommendations

Pump Model

AF-75

AFP-75 AF-120

AFP-120 AFP-150 150 GPM 2-1/2” 3”

* Maximum Rated Flow is the approximate ﬂow the pump can discharge through a

short system of “high ﬂow plumbing size” pipe. The pump will produce lower ﬂow rates if it has to raise water to a higher elevation and/or circulate water through a long piping system.

** Minimum Plumbing Size may be used on installations where the plumbing

system is very short and direct, with few ﬁttings or elbows. In applications, where it is important to achieve the maximum possible ﬂow, always use the larger “High Flow Plumbing Size”.

Maximum*

Rated Flow

75 GPM 1-1/2” 2”

120 GPM 2” 2-1/2”

Minimum**

Plumbing Size

High Flow

Plumbing Size

WATERFALL™ Specialty Pump Installation and User’s Guide

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Piping, Fitting and Valve Installation

1. Use thread seal tape or pipe sealants on all male connections of pipes and ﬁttings. Use only pipe sealant

compounds suited for plastic pipe. DO NOT USE PETROLEUM BASED PRODUCTS.

2. Support pipe to prevent strains on the systems ﬁlter, pump and valves.

3. When connecting ﬁtting to the pump, apply a pipe sealant to the threads and then hand tighten plus 1½ turns. DO

NOT OVERTIGHTEN.

4. Long piping runs and elbows restrict ﬂow. For best efﬁciency, use the fewest possible ﬁttings, large diameter pipe

(at least 1.5 inches) and locate equipment as close to the pool as possible. The pump suctions line should not be smaller than the pipe size on the inlet of the pump.

5. Suction ﬁttings must conform to ASME/ANSI A 112.19.8 M Standards. Use double suction ﬁttings.

6. For most installations Pentair recommends installing a valve on both the pump suction and return lines so that

the pump can be isolated during routine maintenance. We also recommend a valve, elbow or tee installed in the suction line should be no closer to the front of the pump than ﬁve (5) times the suction line pipe diameter. See

Figure 1 on previous page. Example: A 1.5 inch pipe requires a 7.5 inch (19 cm) straight run in front of the suction inlet of the pump. This will

help the pump prime faster and last longer. Note: DO NOT install 90° elbows directly into the pump inlet and outlet.

7. Maximum operating pressure of this pump is 50 PSI. NEVER OPERATE THIS PUMP ABOVE THIS PRESSURE.

8. This pump is NOT intended to be operated in series with other pumps.

WATERFALL™ Specialty Pump Installation and User’s Guide

Electrical Installation

RISK OF ELECTRICAL SHOCK OR ELECTROCUTION. This pump must be installed by a licensed or certiﬁed electrician or a qualiﬁed service professional in accordance with the National Electrical Code (NEC) and all other applicable national or local codes and ordinances. Improper installation will create an electrical hazard which could result in death or serious injury to users, installers, or others due to electrical shock, and may also cause damage to property.

Always disconnect power to the pump at the circuit breaker before servicing the pump. Failure to do so could result in death or serious injury to service people, users or others due to electric shock.

Read all servicing instructions before working on the pump.

Wiring

1. Be sure all electrical breakers, switches and automatic controls are turned off before wiring motor.

STORED CHARGE - Wait at least sixty (60) seconds before servicing.

2. Become familiar with the wiring diagram, volts, hertz, amps and phase of your particular pump motor. All of this information is provided on the motor nameplate label found on the side of the motor.

3. Be sure that the supply voltage meets the requirements listed on the motor nameplate. If these requirements are not met, permanent motor damage may occur.

4. For wiring sizes and general guidelines for proper electrical installation, please follow the speciﬁcations deﬁned in the National Electrical Code and all other applicable national or local codes.

5. 3-Phase motors require external overload protection. An initial inspection is needed to ensure proper rotation of the pump.

Once installed, momentarily cycle the power on and

then off. Note the rotation of the motor fan or shaft as it comes to a stop. If wired correctly the motor shaft and/or fan will match the rotation arrow noted on the pump.

6. Use a strain relief and be sure all electrical connections are clean and tight.

7. Cut the wires to the appropriate length so they do not overlap or touch when connected.

Bonding

1. Bond the motor to the structure in accordance with the National Electrical Code and all other applicable national or local codes. Use a solid copper bonding conductor not smaller than 8 AWG. For Canadian installations, a 6 AWG or larger solid copper bonding conductor is required. Run a wire from the external bonding screw or lug to the bonding structure.

2. Connect the wire from the accessible bonding lug on the motor to all metal parts of the swimming pool, spa, or hot tub structure and to all electrical equipment, metal conduit, and metal piping within 5 feet (1.52 meters) of the inside walls of the swimming pool, spa, or hot tub. Run a wire from the external bonding screw or lug to the bonding structure.

Before establishing or restoring power to the pump, be sure all electrical connections are tight

and all electrical and wiring compartment covers are properly installed.

Note: When the pump is started and stopped by removing power with a relay or timer, a two-pole device should be used to apply and remove power to both POWER LINE TERMINALS.

Pentair offers GFCI breakers which offer appropriate personal protection while meeting 2008 to current NEC Standards for Pool Pumps. See Pentair product catalog for details.

Figure 2

Grounding

1. Per manently ground the motor using the green ground screw, as shown below. Use the correct wire size and type speciﬁed by National Electrical Code. Be sure the ground wire is connected to an electrical service ground.

2. The pump should be permanently connected to either a circuit breaker, 2-pole timer or 2-pole relay.

Note: If AC power is supplied by a GFCI circuit breaker,

the pump should be wired on its own independent circuit unless the pump is operated in tandem

with a Pentair salt chlorine generator.

Section P/N 350486 Rev. D 4/9/19

Bonding

Lug

Motor Shaft

Slot for 3/8” or

1/2” Flathead

Screwdriver

Ground

Screw

1/2” NPT Receptacle for Liquid Tight Connector

WATERFALL™ Specialty Pump Installation and User’s Guide

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OPERATING THE PUMP

Initial Start-Up

1. Relieve all system pressure and open all air bleeders on entire hydraulic system prior to starting the

Waterfall™ Specialty Pump. See ﬁlter owner’s manual.

2. Ensure that all ﬁttings, clamps, closures and couplings are tight and in accordance with equipment

manufacturer’s recommendations.

3. Open suction and discharge valve to allow free ﬂow of water. On ﬂooded suction pumps with strainer pot, the

water source is higher than the pump. The water will ﬂow into the pump strainer pot and the pot will ﬁll with water. On pumps without strainer pot, the water will ﬁll the pump housing.

4. On non-ﬂooded suction systems, the pump lid will have to be removed by rotating the lid counter-clockwise

and lifting.

5. The pump strainer pot should be ﬁlled with water up to suction/inlet port on the pump.

6. It is good practice to lubricate the lid o-ring with silicone lubricant each time the lid is removed. The o-ring

should be cleaned and inspected every time the strainer pot is opened.

7. The lid should be replaced by pressing the lid down and twisting the lid clockwise.

8. The pump is now ready to prime. Energize the motor and the pump will prime. The time to prime will depend

on the suction lift and the distance and size of suction piping. Turn off power if the pump does not prime within thirty (30) minutes and refer to “Troubleshooting” on page 12.

DO NOT run the pump dry. If the pump is run dry, the mechanical seal will be damaged and the pump will start

leaking. If this occurs, the damaged seal must be replaced. ALWAYS maintain proper water level in your pool (half way up skimmer opening). If the water level falls below the skimmer opening, the pump will draw air through the skimmer, losing the prime and causing the pump to run dry, resulting in a damaged seal. Continued operation in this matter could cause a loss of pressure, resulting in damage to the pump case, impeller, and seal and may cause property damage and personal injury.

WATERFALL™ Specialty Pump Installation and User’s Guide

MAINTENANCE

This section describes how to maintain the Waterfall™ Specialty Pump.

Cleaning the Pump Strainer Basket

The strainer basket in the pump should be visually inspected at least once a week. Remove the clear lid and the basket and clean debris from basket. Inspect the lid o-ring; if damaged replace. The pump seal requires no lubrication.

DO NOT open the strainer pot if pump fails to prime or if pump has been operating without water in the strainer

pot. Pumps operated in these circumstances may experience a build up of vapor pressure and may contain scalding hot water. Opening the pump may cause serious personal injury. In order to avoid the possibility of personal injury, make sure the suction and discharge valves are open and strainer pot temperature is cool to touch, then open with extreme caution.

To prevent damage to the pump and ﬁlter and for proper operation of the system, clean pump strainer and

skimmer baskets regularly.

1. Turn off the pump at the breaker.

2. Close the inlet and discharge valves.

3. Relieve pressure in the system.

4. Turn the strainer lid in a counter-clockwise direction to remove the lid and remove the basket from the pump.

5. Remove the debris from the strainer basket and rinse out the basket. Replace the basket if it is cracked.

6. Replace the basket.

7. Fill the pump strainer pot and volute up to the suction/inlet port with water.

8. Clean the lid, O-ring, and sealing surface of the strainer pot.

Note: It is important that the O-Ring be kept clean and well lubricated.

9. Reinstall the lid by placing the lid back onto the strainer pot and turning the lid clockwise.

Note: Be sure the lid O-ring is properly placed around the entire sealing

surface of the strainer pot.

10. Open the inlet and discharge valves.

11. Turn the power “ON” at the circuit breaker.

Figure 3

THIS SYSTEM OPERATES UNDER HIGH PRESSURE.

When any part of the circulating system (e.g., Lock Ring, Pump, Filter, Valves, etc.) is serviced, air can enter the system and become pressurized. Pressurized air can cause the lid to separate which can result in serious injury, death, or property damage. To avoid this potential

hazard, follow these instructions.

Strainer

Lid

O-Ring

Strainer

Basket

Strainer

Pot

Drain Plug

12. Open the manual air relief valve on top of the ﬁlter.

13. Stand clear of the ﬁlter. Start the pump.

14. Bleed air from the ﬁlter until a steady stream of water comes out. Close the manual air relief valve.

WATERFALL™ Specialty Pump Installation and User’s Guide

ENGLISH

Winterizing

You are responsible for determining when freezing conditions may occur. If freezing conditions are expected, take the following steps to reduce the risk of freeze damage. Freeze damage is not covered under warranty.

In mild climates, when temporary freezing conditions may occur, run your ﬁltering equipment all night to prevent freezing.

To prevent freeze damage, follow the procedures below:

1. Shut off electrical power for the pump at the circuit breaker.

2. Drain the water out of the pump housing by removing the two thumb-twist drain plugs from the housing. Store

the plugs in the pump basket.

3. Cover the motor to protect it from severe rain, snow and ice. Note: DO NOT wrap the motor with plastic or other air tight materials during winter storage. The motor may be

covered during a storm, winter storage, etc., but never when operating or expecting operation.

Motor Care

Protect from heat

1. Shade the motor from the sun.

2. Any enclosure must be well ventilated to prevent overheating.

3. Provide ample cross ventilation.

Protect against dirt

1. Protect from any foreign matter.

2. Do not store (or spill) chemicals on or near the motor.

3. Avoid sweeping or stirring up dust near the motor while it is operating.

4. If a motor has been damaged by dirt it may void the motor warranty.

5. Clean the lid and clamp, O-ring, and sealing surface of the pump pot.

Protect against moisture

1. Protect from continuous splashing or continuous sprayed water.

2. Protect from extreme weather such as ﬂooding.

3. If motor internals have become wet - let it dry before operating. Do not allow the pump to operate if it has been ﬂooded.

4. If a motor has been damaged by water it may void the motor warranty.

Note:

• DO NOT wrap motor with plastic or other air tight materials. The motor may be covered during a storm, for winter storage, etc., but never when operating, or expecting operation.

• When replacing the motor, be certain that the motor support is correctly positioned to support the size of motor being installed.

WATERFALL™ Specialty Pump Installation and User’s Guide

SERVICING

This section describes how to service the Waterfall™ Specialty Pump.

RISK OF ELECTRICAL AND ELECTROCUTION

This pool pump must be installed by a licensed or certiﬁed electrician or a qualiﬁed pool serviceman in accordance with the National Electrical Code and all applicable local codes and ordinances. Improper installation will create an electrical hazard which could result in death or serious injury to pool users, installers, or others due to electrical shock, and may also cause damage to property.

Always disconnect power to the pool pump at the circuit breaker before servicing the pump. Failure to do so could result in death or serious injury to serviceman, pool users or others due to electric shock.

Read all servicing instructions before working on the pump.

DO NOT open the strainer pot if pump fails to prime or if pump has been operating without water in the strainer pot. Pumps operated in these circumstances may experience a build up of vapor pressure and may contain scalding hot water. Opening the pump may cause serious personal injury. In order to avoid the possibility of personal injury, make sure the suction and discharge valves are open and strainer pot temperature is cool to touch, then open with extreme caution.

Be sure not to scratch or mar the polished shaft seal faces; seal will leak if faces are damaged.

Pump Disassembly

All moving parts are located in the rear sub-assembly of this pump. Refer to Figure 5 on page 10 for an illustrated parts view.

Tools required:

• 1/4-inch Flat Blade Screwdriver

• 3/8-inch or 1/2-inch Flat Blade Screwdriver

• 9/16-inch Open End Wrench

• Rubber Mallet

• Adjustable Wrench or Locking Pliers

To remove and repair the motor sub-assembly perform the following procedures:

1. Turn off the pump circuit breaker at the main panel. Close suction and discharge valves to relieve system pressure.

2. Drain the pump by removing the drain plugs. The drain plugs can be removed by hand. No tools are needed.

3. Loosen the band clamp by turning the band clamp knob counter-clockwise. The band clamp holds the rear subassembly to the housing (strainer pot/volute).

4. Remove the rear sub-assembly from the housing (strainer pot/volute) and place the band clamp to the side.

Note: If the band clamp does not separate from the pump housing and seal plate when loose, lightly tap the top of

the band clamp with a rubber mallet. This will free the clamp from the housing.

5. Place the rear sub-assembly upright and on a ﬂat surface. Use a ﬂat blade screwdriver to remove the three (3) holding screws located on the diffuser.

6. Remove the diffuser and diffuser spacer from the rear sub-assembly.

7. Use a ﬂat blade screwdriver to remove the impeller screw located in the center of the pump’s impeller.

Note: The impeller screw is a left-handed thread and loosens in a clockwise direction.

8. Use the 3/8-inch or 1/2-inch ﬂat blade screwdriver to hold the motor shaft in place. The motor shaft is accessible through the back of the motor.

Note: If the torque is too high to hold the screwdriver by hand then an adjustable wrench may be used to hold the

screwdriver shaft in place. Use locking pliers instead if your screwdriver has a round shaft.

WATERFALL™ Specialty Pump Installation and User’s Guide

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Pump Disassembly (continued)

9. Unscrew the impeller from the motor shaft by twisting the impeller counter-clockwise.

10. Remove the rotating portion of the spring seal by hand. Note: When placing the rotating seal to the side, ALWAYS place ﬂat side down. The portion of the rotating spring

seal that contacts the white ceramic seal must be kept as free from contaminants (dust, dirt, debris, etc.) as possible.

11. Use the 9/16-inch wrench to remove the four (4) bolts that hold the motor to the seal plate.

Shaft Seal Replacement

The mechanical seal can be changed without disconnecting piping by removing the band clamp and pulling the motor with pump bracket diffuser and impeller assembly away from front pump housing body.

The Shaft Seal consists primarily of two parts, a rotating spring seal and a ceramic seal. See Figure 4. The Waterfall™ Specialty Pump requires little or no service other than reasonable care, however, a Shaft Seal may

occasionally become damaged and must be replaced.

The polished and lapped faces of the seal could be easily damaged if not handled with care.

In mild climate area, when temporary freezing conditions may occur, run your ﬁltering equipment all night to prevent freezing.

To replace the pump seal:

12. Follow steps 1-11 in the “Pump Disassembly” section.

13. Place the seal plate face down on a ﬂat surface and tap out the old ceramic seal.

14. Lubricate the seal seat with clean water.

15. Press the new ceramic seal into the seal plate with your thumbs and wipe off the white ceramic with a clean cloth.

16. Using a 9/16-inch wrench, remount the seal plate to the motor via the four (4) bolts that hold the motor to the seal plate.

17. Grease the motor shaft thread and continue with steps 2-10 from the “Pump Reassembly” section to reassemble

the pump.

Spring Seal Ceramic Seal

Figure 4

WATERFALL™ Specialty Pump Installation and User’s Guide

Pump Reassembly

1. Use the 9/16-inch wrench to remount the seal plate to the motor via the four (4) bolts that hold the motor to the seal

plate.

2. Reseat the spring seal onto the white ceramic seal. Ensure that the carbon face of the spring seal contacts the

ceramic face of the stationary seat.

3. Grease the motor shaft thread and screw the impeller onto the motor shaft.

Note: Use the 3/8-inch or 1/2-inch ﬂat blade screwdriver to hold the motor shaft in place when screwing down the

impeller. The motor shaft is accessible through the back of the motor.

4. Using a ﬂat blade screwdriver, screw in the impeller lock screw.

Note: The impeller screw is a left-handed thread and tightens in a counter-clockwise direction.

5. Remount the diffuser spacer and diffuser using a ﬂat blade screwdriver and the three (3) diffuser screws.

6. Reseat the pump housing (strainer pot/volute) onto the rear sub-assembly.

7. Place the band clamp around the pump housing an rear sub-assembly. Tighten with the band clamp knob.

Note: The band clamp knob should be parallel to the ﬂoor of the equipment pad when the clamp is installed properly.

8. Reinstall the drain plugs. Hand tighten only!

9. Fill the pump strainer pot with water.

10. Refer to page 5 “Initial Start-Up” procedures to restart the pump.

Figure 5

WATERFALL™ Specialty Pump Installation and User’s Guide

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RESTART INSTRUCTIONS

If the Waterfall™ Specialty Pump is installed below the water level of the pool, close return and suction lines prior to opening hair and lint pot on pump. Make sure to reopen valves prior to operating.

DO NOT run the pump dry. If the pump is run dry, the mechanical seal will be damaged and the pump will start

Priming the Pump

The pump strainer pot must be ﬁlled with water before the pump is initially started. Follow these steps to prime the pump:

1. Remove the pump lid.

2. Fill the pump strainer pot with water.

3. Reassemble the pump lid onto the strainer pot. The pump is now ready to prime.

4. Open the air release valve on the ﬁlter, and stand clear of the ﬁlter.

5. Turn on the switch or time clock.

6. When water comes out of the air release valve, close the valve. The system should now be free of air and recirculating water to and from the pool.

7. This pump will prime within thirty (30) minutes. Do not allow your pump to run longer than this time without developing full ﬂow. If the pump does not prime, see “Troubleshooting” on page 12.

8. Two speed pumps should run on high speed for priming.

WATERFALL™ Specialty Pump Installation and User’s Guide

TROUBLESHOOTING

Use the following troubleshooting information to resolve possible Waterfall™ Specialty Pump problems.

RISK OF ELECTRICAL SHOCK OR ELECTROCUTION.

Improper installation will create an electrical hazard which could result in death or serious injury to pool users, installers, or others due to electrical shock, and may also cause damage to property.

1. If you are not familiar with your pool ﬁltering system and/or heater:

a. DO NOT attempt to adjust or service without consulting your dealer, or a qualiﬁed

pool professional.

b. Read the entire Installation & User’s Guide before attempting to use, service or adjust

the pool ﬁltering system or heater.

2. SWITCH OFF power to the pump at the breaker before attempting service or repair.

Problems and Corrective Actions

Problem Cause Remedy

Pump will not prime 1. No water in strainer pot. Add water to pot.

2. Strainer pot lid is not tight. Tighten lid.

3. Damaged lid o-ring. Replace o-ring.

4. Water level is below skimmer. Adjust pool water level.

5. Strainer basket or skimmer basket is clogged. Clear basket.

6. Closed valve in piping system. Check all valves and open all necessary valves.

7. Pump is on low speed (two speed units only). Adjust to high speed.

8. Air leak in suction line. Find & ﬁx leak.

Low Flow 1. Restriction in return line. Open return line restriction.

2. Strainer basket or skimmer basket is clogged. Clean basket.

3. Clogged impeller. Clean obstruction.

4. Air leak in suction line. Find & ﬁx leak.

5. Restriction in suction line. Find and open restriction.

Motor does not turn 1. Power switch is off. Check power switch & reset.

2. Circuit breaker has tripped. Check circuit breaker & reset, if

re-trips, contact electrician.

3. Pump is in “Off-mode” on a timer controlled circuit. Check timer mode.

4. Motor terminal connections are incorrect. Have terminal connections checked by

electrician.

5. Motor shaft is locked by bad bearing. Have motor bearings replaced or replace pump.

6. Impeller is locked by debris. Clean impeller.

Motor Over-Heating 1. Electrical supply connections are incorrect. Have terminal connections checked by

electrician.

2. Wiring to pump is undersized. Consult electrician to rewire pump.

3. Power Company supply voltage is low. Notify Power Company.

4. Ventilation is inadequate for motor. Remove any restrictions to air ﬂow.

WATERFALL™ Specialty Pump Installation and User’s Guide

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REPLACEMENT PARTS

ITEM

1 Motor See Motor Table 2 Seal Plate See Strainer Table 3 Motor Bolt (4x) 070429 4 Seal 354545S 5 Impeller See Motor Table 6 Nose Bearing 355142 7 Diffuser See Motor Table 8 Strainer Basket See Strainer Table

9 Lid O-ring 350013 10 Lid See Strainer Table 11 Impeller Screw 355389 12 Diffuser Spacer See Motor Table 13 Diffuser Screw (3x) 355141 14 Diffuser O-ring 355227 15 Seal Plate O-ring 355329 16 Housing See Strainer Table 17 Band Clamp 354629 18 Band Clamp Knob 175025 19 Base 355305 20 Drain Plug O-ring (2x) 192115 21 Drain Plug (2x) 357161 22 Front Housing O-ring 355330 23 Strainer Pot 355300 24 Strainer Pot Bolt (4x) 354265

DESCRIPTION

PART

NUMBERS

Motor Table

Model

AFP-75,

AF-75

AFP-120,

AF-120

AFP-150 356075** 355220 355140 355495

Motor

(Item #1)

356076* 355544 355545 355317

356076* 355068 355069 355495

Impeller

(Item #5)

Diffuser

(Item #7)

(*) - Replaced P/N 355218 after May 2019 (**) - Replaced P/N 355222 after May 2019

Strainer Table

Model

AFP-75 355303 355387 355301 355468 AFP-120 355497 355387 355301 355468 AFP-150 355497 355441 355300 355468

AF-75 355303 - - 355302

AF-120 355497 - - 355302

Seal Plate

(Item #2)

Strainer

Basket

(Item #8)

Lid

(Item #10)

Diffuser

Spacer

(Item #12)

Housing

(Item #16)

+ 39 hidden pages

Pentair WATERFALL AFP-75, WATERFALL AFP-150, WATERFALL AF-120, WATERFALL AF-75, WATERFALL AFP-120 Installation And User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual