HAYWARD ISC1750 User Manual

INSTALLATION, OPERATION & PARTS

Owner’s Manual

ISC1750 Rev C

HAYWARD STAR-CLEAR™ PLUS CARTRIDGE FILTERS

Models C751 C7512 C900 C9002(S) C1200 C12002(S) C1502 C17502(S) C2002

MODEL

FT2 M2 GPM LPM GPM LPM
C751 75 7.0 75 284 28 106
C900 90 8.4 90 341 34 129

C1200 120 11.1 120 454 45 170
C7512 75 7.0 75 284 28 106

C9002(S) 90 8.4 90 341 34 129

C12002(S) 120 11.1 120 454 45 170

C1502 150 13.9 120 454 56 212

C17502(S) 175 16.3 120 454 66 250

C2002 200 18.6 120 454 75 284

EFFECTIVE FILTRATION

AREA

MAXIMUM WORKING PRESSURE FOR ALL MODELS 50 PSI (3.45 BAR)

DESIGN FLOW RATE

RESIDENTIAL

DESIGN FLOW RATE

PUBLIC

ATTENTION INSTALLER: THIS MANUAL CONTAINS IMPORTANT

INFORMATION ON THE OPERATION, AND SAFE USE OF THIS EQUIPMENT.

THIS MANUAL IS INTENDED FOR THE END USER OF THIS PRODUCT

Hayward Pool Products

620 Division Street, Elizabeth, NJ 07207

Phone: [phone]
www.haywardnet.com

This is the safety-alert symbol. When you see this symbol on your equipment or in this manual, look for one of the following signal

words and be alert to the potential for personal injury or death.

WARNING Warns about hazards that could cause serious personal injury or, death, and or major property damage and if

ignored presents a potential hazard.

CAUTION Warns about hazards that will or can cause minor or moderate personal injury and/or property damage and if

ignored presents a potential hazard. It can also make consumers aware of actions that are unpredictable and unsafe.
The NOTICE label indicates special instructions that are important but not related to hazards.

READ, UNDERSTAND, AND FOLLOW ALL SAFETY AND OPERATION

INSTRUCTIONS. FAILURE TO FOLLOW SAFETY AND OPERATION INSTRUCTIONS CAN RESULT IN

SEVERE PERSONAL INJURY OR DEATH.

CAUTION To reduce risk of injury, do not permit children to use or climb on this product. Closely supervise children at

all times. The ANSI/NSPI-4 Standard (above-ground and on-ground pools) advises that components such as the filtration system,
pumps, and heaters be positioned to prevent their being used as a means of access to the pool by young children.

WARNING COMPONENT SEPARATION HAZARD

Pool and spa water circulation systems operate under hazardous pressure during start up, normal operation, and possibly after
pump shut off. Pressure in system can cause explosive component separation of the upper filter body if safety and operation
instructions are not followed. Severe personal injury or death can result.

This product should be installed and serviced only by a qualified pool professional.

TO AVOID COMPONENT SEPARATION

 Follow all safety and operation instructions.
 Do not operate water circulation system if a system component is assembled improperly, damaged, missing, or not a genuine Hayward

component.

 Before performing maintenance on the water circulation system, verify all system and pump controls are in OFF position and filter

manual air relief valve is in the OPEN position.

 Before starting the system pump, verify that system valves are set in a position to allow water from the filter to return back to the pool.
 Before starting the system pump, the manual air relief valve must be in the OPEN position.
 When starting pump, do not stand over or near filter.
 Return to filter to close manual air relief valve only when a steady stream of water (Not air or air and water mix) is discharged from

the manual air relief valve.

WARNING EXCESS PRESSURE HAZARD

Pressure testing of the pump and filter system in excess of the 50 PSI can cause explosive separation of the
components. Component separation can result in severe personal injury or death.

WARNING ELECTROCUTION HAZARD

High Voltage electricity is present in the pool and spa equipment. High voltage electricity can cause shock and electrocution.
Shock and electrocution can result in severe personal injury or death.

 All electrical wiring MUST be in conformance with applicable local codes, regulations and the National Electrical Code (NEC).
 Before performing any service or maintenance on electrical equipment turn off all electrical power.
 Contact a licensed electrician or building inspector for information on local electrical codes for bonding requirements.
 Verify water discharge from the filter manual air relief valve is directed away from electrical devices.
 Do not locate pump controls over or near filter.

WARNING SUCTION ENTRAPMENT HAZARD.

Suction in suction outlets and/or suction outlet covers that are, damaged, broken, cracked, missing, or unsecured
can cause severe injury and/or death due to the following entrapment hazards:

Hair Entrapment- Hair can become entangled in suction outlet cover.
Limb Entrapment- A limb inserted into an opening of a suction outlet sump or suction outlet cover that is damaged, broken, cracked,

missing, or not securely attached can result in a mechanical bind or swelling of the limb.

Body Suction Entrapment- A negative pressure applied to a large portion of the body or limbs can result in an entrapment.
Evisceration/ Disembowelment Entrapment- A negative pressure applied directly to the intestines through an unprotected suction

outlet sump or suction outlet cover that is, damaged, broken, cracked, missing, or unsecured can result in evisceration/ disembowelment
entrapment.

Mechanical Entrapment- There is potential for jewelry, swimsuit, hair decorations, finger, toe or knuckle to be caught in an opening of a suction

outlet cover resulting in mechanical entrapment.

USE ONLY HAYWARD GENUINE REPLACEMENT PARTS

Page 2 of 8 STAR-CLEAR PLUS CARTRIDGE FILTER ISC1750 REV C

TO REDUCE THE RISK OF ENTRAPMENT HAZARDS:

 A minimum of two functioning suction outlets per pump must be installed. Suction outlets in the same plane (i.e. floor or wall), must be

installed a minimum of three feet (3’) [1 meter] apart, as measured from near point to near point.

 Dual suction outlets shall be placed in such locations and distances to avoid “dual blockage” by a user.
 Dual suction outlets shall not be located on seating areas or on the backrest for such seating areas.
 The pool or spa circulation system shall be designed to comply with ANSI/APSP-7 2006.
 Suction outlet covers shall conform to ANSI/ASME A112.19.8
 Never use Pool or Spa if any suction outlet component (cover/grate) is damaged, broken, cracked, missing, or not securely attached.
 Immediately replace damaged, broken, cracked, missing, or not securely attached suction outlet components.
 The CPSP as well as the ICC International Residential Code Part IX, Appendix G, Section AG106 specifies the installation of a safety

vacuum release system conforming to ASME A112.19.17, or an approved gravity drain system.

 Failure to remove pressure test plugs and/or plugs used in winterization of the pool/spa from the suction outlets can result in an increased

potential for suction entrapment.

 Failure to keep suction outlet components clear of debris, such as leaves, dirt, hair, paper and other material can result in an increased

potential for suction entrapment.

Suction outlet covers and grates have a finite life. They should be inspected frequently and replaced within specified life.

GENERAL INFORMATION

The Hayward Star-Clear Plus filter is a high performance swimming pool filter with a residential filtration rating of 4,500 gallons (17
kl) per hour (C751), 5,400 gallons (20.5 kl) per hour (C900), or 7,200 gallons (27.3 kl) per hour (C1200, C1502, C1750, and C2002).
Manufactured from durable, corrosion-proof materials, they are designed for continuous or intermittent operation, for installation
above or below the pool water line, for fresh or saltwater swimming pools or spas. Star-Clear Plus filters utilize a reusable single
element, reinforced polyester filter cartridge to provide a high degree of water clarity with absolute minimum care. Their unique
design is such that no tools are needed to remove or replace the cartridge in the filter assembly. Simply spin off the locking knob, lift
off the filter cover and remove the cartridge. It's that easy.

PUMP SELECTION AND LOCATION

To power your Star-Clear Plus filter, select a continuous duty pump designed for swimming pool or spa service.
It is important to first determine where your pump and filter will be located. If above the water line, a self-priming pump must be used.
Self-priming pumps such as Hayward's Super Pump®, Super II, or TriStar have the ability to lift water from a lower level
and prime automatically.

Select a pump appropriate for your application. Taking into consideration, operation of hydrotherapy fittings, automatic
cleaners, required turn over rates and losses in the system. A dealer can help you select the proper size pump for your system.

FILTER LOCATION

1. Since plumbing fittings offer a resistance to water flow, position the filter as close to the swimming pool as local codes allow. Keep
the number of fittings to a minimum. Select a well drained area, one that will not flood when it rains.

2. Set the filter on a solid level surface. Allow a minimum top clearance for cartridge removal of 19" (483mm) for the C751 and C900,
25" (635mm) for the C1200, C1502 and allow 30" (762mm) for the C1750 and C2002. Be sure filter, pump, drain & pressure
gauge are accessible for convenient operation.

3. Position the filter so the tank can drain by gravity.

4. If practical, place pump and filter in the shade to shield it from continuous, direct heat from the sun.

USE ONLY HAYWARD GENUINE REPLACEMENT PARTS

Page 3 of 8 STAR-CLEAR PLUS CARTRIDGE FILTER ISC1750 REV C

PLUMBING

1. Use 1-1/2" or 2" piping. When making permanent connections, be sure to provide unions for easy servicing.

2. Refer to the diagrams on previous page for basic suggested valving. Ball valves are recommended where needed. While systems
vary, the main consideration is to provide the desired control of water flow from the pool to the pump and filter, and back to the
pool. When the filter is located below water level, provide valves to prevent back flow of water to the filter during cleaning and
routine servicing.

3. All plumbing on the Star-Clear Plus filter is 1-1/2" or 2" N.P.T. or socket (solvent weld). When making threaded connections to the
filter use plastic adapters. Apply three turns of Teflon tape (or use special plastic pipe sealant) to male threads.

Screw the fitting into the thread hand tight; then using a wrench, tighten one more full turn. Additional tightening is unnecessary

and could result in broken or damaged fittings.

4. Connect the pool suction plumbing between the skimmer, pool outlet, etc. and the pump.

5. Install the pool return plumbing.

6. If the pressure gauge is not installed, apply three wraps of Teflon tape to the gauge threads, and carefully screw the gauge into the
threaded hole in the filter head.

7. A filter drain plug is furnished with each filter and is all that is needed for complete filter draining. A manual air relief valve is
furnished to aid in bleeding off unwanted air when starting the filter. The auto air relief provides air removal during operation.

8. All electrical connections should be made in accordance with local codes.

9. Check for joint leaks before operating

10. Refer to pump instruction booklet for pump information.

STARTING THE FILTER

Be sure filter drain plug is closed. Open manual air relief valve a few
turns and open the suction and return valves (when used).

CAUTION: All suction and discharge valves
must be open when starting the system. Failure to do so
could cause severe personal injury and/or property
damage. Be sure locking knob is secure (hand tighten-only slight

pressure is required).

Stand clear of the filter and prime and start the pump, following the manufacturer's instructions. Air trapped in the system will
automatically vent to the pool and out air relief valve. Close air relief valve as soon as air is vented.

C751 18 46 19 48
C900 18 46 19 48
C1200 18 46 25 64
C7512 18 46 19 48
C9002(S) 18 46 19 48
C12002(S) 18 46 25 64
C1502 18 46 25 64
C17502(S) 18 46 30 76
C2002 18 46 30 76

REQUIRED CLEARANCE

SIDE ABOVE

IN CM IN CM

FILTERING

Filtration starts as soon as flow is steady through the filter. As the filter cartridge removes dirt from the pool water, the accumulated dirt
causes a resistance to flow. As a result, the gauge pressure will rise and the flow will decrease. When the pressure rises 7-10 psi (.49­.70 Bar) above the starting pressure, or when flow decreases below desired rate, clean or replace the filter cartridge.

CLEAN / REPLACE CARTRIDGE

REMOVING CARTRIDGE ELEMENT

1. Shut off the pump.

2. If filter is located below water level, close valves or block off suction & discharge lines to prevent backflow of water from the pool.

3. Remove drain plug and allow water to drain from filter. Close drain plug. (To assist draining process; open air vent a few turns.)

4. Unscrew and remove locking knob (counterclockwise direction) and carefully lift off top cover to gain access to filter cartridge.

5. Lift out cartridge and clean. Or, replace with clean, spare cartridge. (See Cleaning Cartridge.)

REINSTALLING CARTRIDGE ELEMENT

1. Clean any collected debris from the bottom of filter body.

2. Carefully replace cartridge element over tie rod and into filter body ensuring that the cartridge sits evenly on the collector hub in
bottom of filter body.

3. Place cover on filter body (being sure filter head 0-ring is in place and clean). Fit tie rod end through center hole.

4. Tighten locking knob in clockwise direction. (Hand tight only.)

5. Proceed as in STARTING THE FILTER.

USE ONLY HAYWARD GENUINE REPLACEMENT PARTS

Page 4 of 8 STAR-CLEAR PLUS CARTRIDGE FILTER ISC1750 REV C

CHLORINE STABILIZER

CLEANING CARTRIDGE

The cartridge filter element can be cleaned by pressure washing inside and out with a garden hose. (The cartridge is easier to clean
when dry.) After hosing the cartridge, for best results, allow cartridge to dry and carefully brush pleated surface areas to remove fine
particles. Do not pressure wash, as it can damage the filter element.

Algae, suntan oil and body oils can form a coating on the cartridge pleats which may not be thoroughly removed by hosing. To remove
such materials, soak the cartridge in a solution of filter element cleaner (various brands available at pool dealer). Follow
manufacturer's directions for use and allow an hour for soaking. Hose thoroughly before reinstalling in filter.

A spare cartridge filter element is an excellent investment. It provides convenience and ensures that your filter will always be ready
to operate at peak efficiency.

1. Hayward cartridges are specially designed and engineered for use in Star-Clear Plus filters. For best results, use only genuine

Hayward Star-Clear cartridges in your filter. Order Model No. CX760RE, CX900RE , CX1200RE, CX1520RE, CX1750RE, or

CX2020RE from your dealer. The Hayward name is your guarantee of quality.

VACUUMING

Vacuuming can be performed directly into the filter whenever needed. Clean cartridge after vacuuming, if required.

WINTERIZING (Filter)

In areas where sub-freezing temperatures can be expected, the filter should be drained and/or removed from its, operating location and
stored indoors. Remove and clean cartridge. Reinstall cartridge in filter tank. Tighten locking knob only a few turns when storing.

SERVICE AND REPAIRS

Consult your local authorized Hayward dealer or service center. No returns may be made directly to the factory without the expressed
written authorization of Hayward Pool Products.

SUGGESTED POOL CHEMISTRY LEVELS

pH 7.2 to 7.8

TOTAL ALKALINITY 80 to 120 ppm

CALCIUM HARDNESS 200 to 400 ppm

COMBINED CHLORINE .2 ppm Maximum

CHLORINE (STABILIZED) 1.0 to 3.0 ppm

(Cyanuric Acid)

Page 5 of 8 STAR-CLEAR PLUS CARTRIDGE FILTER ISC1750 REV C

60 to 80 ppm

USE ONLY HAYWARD GENUINE REPLACEMENT PARTS

NO.

la CX900G

Locking Knob

1

1b CX1750G

Locking Knob

1

0-

Ring 1

Washer

2

E-

Ring 1

Guide Cone

1

Filter Head w/Directional Vent

Filter Head w/Directional Vent

Filter Head w/Directional

Vent

1

Filter Head 0

-

Ring 1

10b

CX900RE

Cartridge Element (C900)

1

Cartridge Element (C1200)

1

Cartridge Element (C1750)

1

Cartridge Element (C

1502) 1

Cartridge Element (C

2002) 1

Tie Rod (C900)

1

Tie Rod (C1200)

1

Tie Rod (C1750)

1

Auto Air Relief Tube (C900)

1

Auto

Air Relief Tube (C1200)

1

Auto Air Relief Tube (C1750)

1

1/2" Drain Plug with O

-

Ring 1

2" PVC Socket Connector

Set of 2

(Not Shown)

2

Directional Vent

Valve w/O

-

Ring

POOL WATER WON’T CLEAR UP

REMEDY

1.

Check skimmer and pump

1.

Check for algae in pool and

treat

as

1.

Check chlorine, pH and total

PROBLEM SOLVING LIST

LOW WATER FLOW SHORT FILTER CYCLES

strainer baskets for debris.

2. Check for restrictions in intake
and discharge lines.

3. Check for air leak in intake line
(indicated by bubbles returning to
pool).

4. Clean Filter Cartridges

(see Page 5)

required.

2. Be sure chlorine and pH levels are
in proper range (adjust as required).

PARTS

Models C751, C7512, C900, C9002(S), C1200,
C12002(S) C1502, C17502(S), and C2002 Filters

REF
NO.

2 CX900H
3 CX900W
4 CX900J
5 CX900D
6a CX900B
6b CX1200B
6c CX1750B
7 CX900F
8a CX900AA Filter Body-1-1/2" FIP 1
8b CX900AA2 Filter Body-2" FIP 1
9 ECX2712B1 Pressure Gauge 1
10a CX760RE Cartridge Element (C751, C7512) 1

PART NO.

DESCRIPTION

alkalinity levels and adjust as
required.

2. Be sure flow rate through filter is
sufficient.

3. Operate filter for longer periods.

REQ’D.

1
1

10c CX1200RE
10d CX1750RE
10e CX1520RE
10f CX2020RE
11a CX800Z2
11b CX1100Z2
11c CX1750Z2
12a CX800Z4
12b CX1100Z4
12c CX1750Z4
13 CX250Z14A

14 CX900K
15 ECX1322A

Page 6 of 8 STAR-CLEAR PLUS CARTRIDGE FILTER ISC1750 REV C

1

USE ONLY HAYWARD GENUINE REPLACEMENT PARTS

HAYWARD® LIMITED WARRANTY

To Buyer, as original purchaser of this equipment, Hayward Pool Products, 620 Division Street, Elizabeth, New Jersey, warrants its
products free from defects in materials and workmanship for a period of ONE (1) year from the date of purchase.

Parts which fail or become defective during the warranty period, except as a result of freezing, negligence, improper installation, use, or
care, shall be repaired or replaced, at our option, without charge, within 90 days of the receipt of defective product, barring unforeseen
delays.

To obtain warranty replacements or repair, defective components or parts should be returned, transportation paid, to the place of
purchase, or to the nearest authorized Hayward service center. For further Hayward dealer or service center information, contact
Hayward customer service department. No returns may be made directly to the factory without the express written authorization of
Hayward Pool Products.

To original purchasers of this equipment, Hayward Pool Products warrants its products to be free from defects in materials and
workmanship for a period of ONE (1) year from the date of purchase.

Filters which become defective during the warranty period, except as a result of freezing, negligence, improper installation, use or care,
shall be repaired or replaced, at our option, without charge.

All other conditions and terms of the standard warranty apply.

Hayward shall not be responsible for cartage, removal and/or reinstallation labor or any other such costs incurred in obtaining warranty
replacements.

The Hayward Pool Products warranty does not apply to components manufactured by others. For such products, the warranty
established by the respective manufacturer will apply.

Some states do not allow a limitation on how long an implied warranty lasts, or the exclusion or limitation of incidental or consequential
damages, so the above limitation or exclusion 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. Elizabeth, NJ 07207

Hayward Pool Products

620 Division Street

DATE OF INSTALLATION ____________________

INITIAL PRESSURE GAUGE READING (CLEAN FILTER) _______________________

PUMP MODEL ________________ HORSEPOWER _______________________

FILTER MODEL ________________ SERIAL NUMBER _______________________

USE ONLY HAYWARD GENUINE REPLACEMENT PARTS

Page 7 of 8 STAR-CLEAR PLUS CARTRIDGE FILTER ISC1750 REV C

Please Print Clearly:

Or REGISTER YOUR WARRANTY ON

-

LINE AT

WWW.HAYWARDNET.COM

DETACH HERE: Fill out bottom portion completely and mail within 10 days of purchase/installation or register online.

Register online at

www.haywardnet.com

PRODUCT REGISTRATION

(Retain For Your Records)

▲Retain this Warranty Certificate in a safe and convenient location for your records

-----------------------------------------------------------------------------------------------------------------------------------------

STAR-CLEAR PLUS CARTRIDGE FILTER Warranty Card Registration

Years Pool has been in service

First Name____________________ Last Name_________________________
Street Address__________________________________________________
City_____________________________ State___________ Zip____________
Phone Number_____________________ Purchase Date_________________
E-Mail Address__________________________________________________
Serial Number

Model Number_____________________________________________________
Pool Capacity_______________(U.S. Gallons)

Please include me on all e-mail communications regarding Hayward



Equipment or promotions.

Mail to: Hayward Pool Products, 620 Division Street, Elizabeth, NJ 07207
Attn: Warranty Dept

 < 1 year  1-3  4-5  6-10 11-15  >15

Purchased from_____________________________

Builder Retailer Pool Service Internet/Catalog

Company Name_________________________________
Address_______________________________________
City____________________ State_____ Zip__________
Phone_________________________________________

Type of Pool:

 Concrete/Gunite  Vinyl  Fiberglass
 Other_____________________________

 New Installation  Replacement

Installation for:

 In Ground  Above Ground  Spa

© Hayward Pool Products. 2011 All rights reserved

Hayward is a registered trademark of Hayward Industries, Inc.