Pentair Autotrol 255, Logix 764, Logix 742, Logix 762 Installer Manual

AUTOTROL 255/LOGIX

742-762-764

INSTALLER MANUAL

WATER PURIFICATION

Installer Manual 255/LOGIX 742-762-764 - Table of content

Table of content

1. Generalities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.1. Scope of the documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.2. Release management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.3. Manufacturer identifier, product . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

1.4. Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.5. Abbreviations used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.6. Norms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.6.1. Applicable norms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.6.2. Available certificates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.7. Procedure for technical support . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.8. Copyright . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.9. Limitation of liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.10. Scan & Service application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2. Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.1. Safety pictograms definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.2. Serial label location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.3. Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.3.1. Personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.3.2. Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.4. Hygiene and sanitization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.4.1. Sanitary issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.4.2. Hygiene measures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.1. Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.1.1. Performance flow rate characteristics (single valve) . . . . . . . . . . . . . . 15

3.2. Outline drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.3. Description and components location . . . . . . . . . . . . . . . . . . . . . . . 16

3.4. Options available on the valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.4.1. Autotrol Logix residential/commercial series auxiliary microswitch

kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.5. System regeneration cycle (8-cycles operation) . . . . . . . . . . . . . . . 19

3.6. Regeneration Sequence for Twin and Lockout Systems . . . . . . . .21

3.6.1. Twin alternating systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.6.2. Twin parallel systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.6.3. Lockout "L" systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

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Installer Manual 255/LOGIX 742-762-764 - Table of content

4. System sizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

4.1. Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

4.1.1. Injector/DLFC/Refill flow controler-Valve configuration. . . . . . . . . . . 25

4.2. Cycle time calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

4.3. Injector flow rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4.4. Resin exchange capacity upon salt dosage for standard

efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

4.5. Resin exchange capacity upon salt dosage for high efficiency . . . 29

5. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

5.1. Safety notices for installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.2. Installation environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.2.1. General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.2.2. Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.2.3. Mechanical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

5.2.4. Outdoor Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

5.3. Integration constraints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

5.4. Block diagram and configuration example . . . . . . . . . . . . . . . . . . 33

5.4.1. Simplex systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

5.4.2. Twin parallel / alternating systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

5.5. Valve connection to piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

5.5.1. Top-mounted valve installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

5.6. Connections (electrical) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

5.7. Bypassing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

5.8. Drain line connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

5.9. Overflow line connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

5.10. Brine line connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

6. Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

6.1. Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

6.2. Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

6.3. Basic programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

6.3.1. Basic programming 742 - 762 controller . . . . . . . . . . . . . . . . . . . . . . . 46

6.3.2. Basic programming 764 controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

6.4. Advanced programming (8-cycles softener system) . . . . . . . . . . . 52

6.5. Cycle time programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

6.6. Diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

6.7. Resetting the controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

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Installer Manual 255/LOGIX 742-762-764 - Table of content

7. Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

7.1. Water filling, draining and watertightness inspection . . . . . . . . . .58

7.1.1. System started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

7.1.2. Additional tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

7.2. Sanitization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

7.2.1. System disinfection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

7.2.2. Sodium or calcium hypochlorite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

7.2.3. Electro chlorination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

8. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

8.1. Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

8.2. Manual regeneration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

8.3. To advance regeneration cycles . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

8.4. To cancel a regeneration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

8.5. Automatic regeneration modes with twin system (764 only) . . . . . 63

8.5.1. Alternating systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

8.5.2. Parallel systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

9. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

9.1. General system inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

9.1.1. Water quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

9.1.2. Mechanical Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

9.1.3. Regeneration test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

9.2. Recommended maintenance plan . . . . . . . . . . . . . . . . . . . . . . . . . . 67

9.3. Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

9.3.1. Use original spare parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

9.3.2. Use original approved lubricants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

9.3.3. Maintenance instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

9.4. Cleaning and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

9.4.1. First steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

9.4.2. Cleaning the injector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

9.4.3. Cleaning the refill controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

9.4.4. Cleaning the injector screen cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

9.4.5. Cleaning the backwash controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

9.4.6. Cleaning the air check valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

9.4.7. Disassembling valve from tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

9.4.8. Motor and camshaft replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

9.4.9. Optical sensor and controller replacement . . . . . . . . . . . . . . . . . . . . . . 75

9.4.10. Top plate and disc valve replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . 76

9.4.11. Valve on tank assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

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Installer Manual 255/LOGIX 742-762-764 - Table of content

10. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

11. Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82

11.1. Valve parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

11.2. Options and special kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

12. Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

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Installer Manual 255/LOGIX 742-762-764 - Generalities

1. Generalities

1.1. Scope of the documentation

The documentation provides the necessary information for appropriate use of the product. It informs the user to ensure efficient execution of the installation, operation or maintenance procedures.

The content of this document is based on the information available at the time of publication. The original version of the document was written in English.

For safety and environmental protection reasons, the safety instructions given in this documentation must be strictly followed.

This manual is a reference and will not include every system installation situation. The person installing this equipment should have:

• training in the 700 Logix series controllers and water softener installation;

• knowledge of water conditioning and how to determine proper controller settings;

• basic plumbing skills. This document is available in other languages on https://www.pentairaquaeurope.com/product-

finder/product-type/control-valves.

1.2. Release management

Revision Date Authors Description

A 20.02.2019 STF/ARE First edition.

1.3. Manufacturer identifier, product

Manufacturer: Pentair International LLC

Avenue de Sevelin 18 1004 Lausanne Switzerland

Product: 255/LOGIX 742-762-764

1.4. Intended use

The device is intended to be used for residential/commercial applications only and it is purpose-built for water treatment.

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Installer Manual 255/LOGIX 742-762-764 - Generalities

1.5. Abbreviations used

Assy................................................................................... Assembly

BLFC/Refill Flow Controller............................................. Brine Line Flow Controller

DF...................................................................................... Down Flow

DLFC ................................................................................. Drain Line Flow Controller

Inj ...................................................................................... Injector

PN ..................................................................................... Part Number

QC...................................................................................... Quick Connect

Regen ................................................................................ Regeneration

SBV.................................................................................... Safety Brine Valve

S. Steel.............................................................................. Stainless Steel

TC ...................................................................................... Time Clock

UF...................................................................................... Up Flow

1.6. Norms

1.6.1. Applicable norms

Comply with the following guidelines:

• 2006/42/EC: Machinery Directive;

• 2014/35/UE: Low Voltage Directive;

• 2014/30/UE: Electromagnetic compatibility;

• 2011/65/EC: Restriction of use of certain hazardous substances in electrical and electronic

equipment (RoHS);

• UNI EN ISO9001 (certificate no. 95.022 SSG ICS).

Meets the following technical standards:

• IEC/EN 60335-1;

• IEC 61010-1;

• EN 55014-1;

• EN 55014-2;

• EN 61000-3-2: 2006 + A1: 2009 + A2: 2009;

• EN 61000-3-3: 2008;

• EN 61000-6-2: 2005;

• EN 61000-6-3: 2007 + A1: 2011;

• EN 61326-1.

1.6.2. Available certificates

•CE;

•DM174;

•ACS.

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Access to all certifications:

Installer Manual 255/LOGIX 742-762-764 - Generalities

1.7. Procedure for technical support

Procedure to follow for any technical support request: A Collect the required information for a technical assistance request.

→ Product identification (see 2.2. Serial label location, page 10 and 9.3. Recommendations,

page 69);

→ Problem description of the device.

B Please refer to the "Troubleshooting" chapter, page 78. If the problem persists contact your

supplier.

1.8. Copyright

1.9. Limitation of liability

Pentair Quality System EMEA products benefit, under specific conditions, from a manufacturer warranty that may be invoked by Pentair’s direct customers. Users should contact the vendor of this product for applicable conditions and in case of a potential warranty claim.

Any warranty provided by Pentair regarding the product will become invalid in case of:

• improper installation, improper programming, improper use, improper operation and/or maintenance leading to any kind of product damages;

• improper or unauthorized intervention on the controller or components;

• incorrect, improper or wrong connection/assembly of systems or products with this product and vice versa;

• use of a non-compatible lubricant, grease or chemicals of any type and not listed by the manufacturer as compatible for the product;

• failure due to wrong configuration and/or sizing.

Pentair accepts no liability for equipment installed by the user upstream or downstream of Pentair products, as well as for process/production processes which are installed and connected around or even related to the installation. Disturbances, failures, direct or indirect damages that are caused by such equipment or processes are also excluded from the warranty. Pentair shall not accept any liability for any loss or damage of profits, revenues, use, production, or contracts, or for any indirect, special or consequential loss or damage whatsoever. Please refer to the Pentair List Price to know more about terms and conditions applicable to this product.

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1.10. Scan & Service application

Scan & Service mobile application is the ideal support for the maintenance person in his daily business. A simple scan of an identification (ID) label (1) present on the valve with a smartphone gives an instantaneously access to all updated information related to the product, such as:

• valves and tanks detailed configuration;

• manuals;

• spare parts lists;

• troubleshooting recommendations;

• multi-lingual videos, detailing how to best service a part;

• information about new products, latest technologies, novelties about the Blue Network program,

etc....

No. Operation

Download the application "Scan & Service" from or in a

smartphone (4).

B Open the application "Scan & Service".

C Scan the bleam (3) stuck on the valve (2).

D Navigate to find information.

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Installer Manual 255/LOGIX 742-762-764 - Safety

Locking bar label

Model

Serial label

Installation warning

Part number

Electrical

ratings

Serial number

Production

date

Production

order

2. Safety

2.1. Safety pictograms definition

Caution

Warns of a risk of minor injury or major material damage to the device or environment.

Danger

Warns against serious personal injury or death.

Note

Comment.

2.2. Serial label location

Warning

Warns against serious personal injury and damage to health.

Mandatory

Standard or measure to apply.

Prohibition

Restriction to be observed.

Note

Ensure that the serial label and the safety tags on the device are completely legible and clean. If necessary, replace them with new tags and put them in the same places.

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Installer Manual 255/LOGIX 742-762-764 - Safety

2.3. Hazards

All the safety and protection instructions contained in this document must be observed in order to avoid temporary or permanent injury, damage to property or environmental pollution. At the same time, any other legal regulations, accident prevention and environmental protection measures, as well as any recognized technical regulations relating to appropriate and risk-free methods of working which apply in the country and place of use of the device must be adhered to.

Any non-observation of the safety and protection rules, as well as any existing legal and technical regulations, will result in a risk of temporary or permanent injury, damage to property or environmental pollution.

2.3.1. Personnel

Warning

Only qualified and professional personnel, based on their training, experience and instruction as well as their knowledge of the regulations, the safety rules and operations performed, are authorized to carry out necessary work.

2.3.2. Material

The following points must be observed to ensure proper operation of the system and the safety of user:

• do not remove the locking bar;

• be careful of high voltages present on the transformer (230V);

• do not put your fingers in the system (risk of injuries with moving parts and shock due to electric voltage).

2.4. Hygiene and sanitization

2.4.1. Sanitary issues

Preliminary checks and storage

• Check the integrity of the packaging. Check that there is no damage and no signs of contact with liquid to make sure that no external contamination occurred;

• the packaging has a protective function and must be removed just before installation. For transportation and storage appropriate measures should be adopted to prevent the contamination of materials or objects themselves.

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Installer Manual 255/LOGIX 742-762-764 - Safety

Assembly

• Assemble only with components which are in accordance with drinking water standards;

• after installation and before use, perform one or more manual regenerations in order to clean the media bed. During such operations, do not use the water for human consumption. Perform a disinfection of the system in the case of installations for treatment of drinking water for human use.

Note

This operation must be repeated in the case of ordinary and extraordinary maintenance. It should also be repeated whenever the system remains idle for a significant time.

Note

Valid only for Italy signs and obligations arising from the DM25.

: In case of equipment used in accordance with the DM25, apply all the

2.4.2. Hygiene measures

Disinfection

• The materials used for the construction of our products meet the standards for use with potable water; the manufacturing processes are also geared to preserving these criteria. However, the process of production, distribution, assembly and installation, may create conditions of bacterial proliferation, which may lead to odor problems and water contamination;

• it is therefore strongly recommended to sanitize the products. See 7.2. Sanitization, page 60;

• maximum cleanliness is recommended during the assembly and installation;

• for disinfection, use Sodium or Calcium Hypochlorite and perform a manual regeneration.

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Installer Manual 255/LOGIX 742-762-764 - Description

3. Description

3.1. Technical specifications

Design specifications/ratings

Valve body ......................................................................... Glass-filled Noryl

Rubber components ......................................................... Compounded for cold water - NSF listed

material

Valve material certification .............................................. WQA Gold Seal Certified to NSF Std. 372

(low lead compliance standard)

Weight (valve with controller)........................................... 1.8 kg

Recommended operating pressure ................................. 1.38 - 8.27 bar

Hydrostatic test pressure................................................. 20.69 bar

Water temperature........................................................... 1 - 38°C

Ambient temperature ....................................................... 2 - 50°C

Flow rates (valve only)

Service at 1.03 bar (15 psi) drop (System)

Backwash at

1.72 bar (25 psi) drop (per valve)

Service Kv (Cv) (per valve)

Backwash Kv (Cv) (per valve)

Single valve

3.52 m3/h 3.52 m3/h 7 m3/h n x 3.52 m3/h

1.36 m3/h 1.36 m3/h 1.36 m3/h 1.36 m3/h

3.4 m3/h

(3.99 gpm)

1 m3/h

(1.2 gpm)

Twin Alternating

(2 valves)

3.4 m3/h

(3.99 gpm)

1 m3/h

(1.2 gpm)

Twin Parallel

(3.99 gpm)

(2 valves)

3.4 m3/h

1 m3/h

(1.2 gpm)

- NSF listed material

Lockout "L"

(n valves)*

3.4 m3/h

(3.99 gpm)

1 m3/h

(1.2 gpm)

* n corresponds to the number of valves in the system.

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Installer Manual 255/LOGIX 742-762-764 - Description

Valve connections

Tank adapter thread ..........................................................2½" - 8, NPSM

Inlet/outlet maniflold.........................................................1" BSP, female (s. steel) or male

(thermoplastic). ¾" BSP, female (thermoplastic or s. steel) or

male (thermoplastic)

Drain line ...........................................................................½" or ⅜" (manifold dependent)

Brine line ...........................................................................⅜" NPT as standard, ¼" NPT optional;

air check built onto valve

Riser tube [Ø].....................................................................1.050" standard, or 0.8125" optional with

extra insert

Riser tube [length].............................................................1⅛ ± ⅛" above top of tank

Electrical

Controller Operating Voltage ............................................12 VAC (requires use of Pentair Water

supplied transformer)

Input Supply Frequency.....................................................50 or 60 Hz

Motor Input Voltage ...........................................................12 VAC

Controller Power Consumption ........................................8 W (max)

Protection rating................................................................IP23

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Installer Manual 255/LOGIX 742-762-764 - Description

Flow rate (m

/h)

Pressure drop (bar)

Backwash

Service

FLOW RATE VS PRESSURE DROP

3.1.1. Performance flow rate characteristics (single valve)

The graph shows the pressure drop created by the valve itself at different flow rates. It makes it possible to predetermine the maximum flow rate going through the valve depending on the system settings (inlet pressure etc). It also makes it possible to determine the valve pressure drop at a given flow rate, and therefore to evaluate the system pressure drop vs flow rate.

3.2. Outline drawing

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Installer Manual 255/LOGIX 742-762-764 - Description

LCD display

DOWN button

SET button

UP button

Manual REGEN button

Control module mount

BLFC/Refill

controller

Injector and cap

Check ball

Air check

Brine tank tube connection

Manifold connection

One-piece valve disc spring

Valve discs

Optical sensor

Camshaft

Motor

Turbine cable connection

Drain

Inlet

Backwash flow drain controller

Locking bar

Injector screen

Outlet

Manifold

3.3. Description and components location

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Installer Manual 255/LOGIX 742-762-764 - Description

Hole Camshaft

Switch

Guide pin

Switch cam

3.4. Options available on the valve

3.4.1. Autotrol Logix residential/commercial series auxiliary microswitch kits

The Logix residential/commercial series switch kits allow you to provide an electrical signal during the valve operation. The switches can be wired independently in N.O or NC. The switches are available for 0.1 Amp or 5 Amp rating.

3.4.1.1 Front mount

The microswitch is mounted behind the controller at the front end of the camshaft. The cam for this switch is screwed to the front of the camshaft. This cam can be adjusted to activate the microswitch on any position upon your needs.

To install this front mount microswitch:

No. Operation

A Place the valve into the position during which you need the signal.

Remove the cover and the controller. See chapters 9.4.1. First steps, page 69, 9.4.7. Disassembling valve from tank, page 73 and

9.4.9. Optical sensor and controller replacement, page 75.

C Screw switch base to top plate using the switch guide pin over screw boss.

Install the cam so that the microswitch pin is released and screw the cam using a self-

tapping screw.

E Connect wires.

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Installer Manual 255/LOGIX 742-762-764 - Description

Mounting holes

3.4.1.2 Top plate mount

The microswitch is located under the cover and is screwed to the top plate. The switch is turned on/ off by a cam lobe on the camshaft. Its function is to signal that the unit is in-service or out-of-service (regenerating). Actually, the microswitch is actuated during service position. As a result, depending on the wiring N.O or N.C, the signal will be given either during the complete service period or during the complete regeneration time.

To install this top plate microswitch:

No. Operation

Remove the cover.

See chapters 9.4.1. First steps, page 69 and 9.4.7. Disassembling valve from tank, page 73.

B Connect wires.

C Use self-tapping screws to secure the switch base to the blind boss top plate.

D Adjust microswitch distance to the camshaft.

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Installer Manual 255/LOGIX 742-762-764 - Description

3.5. System regeneration cycle (8-cycles operation)

Service (downflow) — cycle C0

Untreated water is directed down through the resin bed and up through the riser tube. The hardness ions attach themselves to the resin and are removed from the raw water being exchanged on the resin beads towards sodium ions. The water is conditioned as it passes through the resin bed.

Backwash (upflow) — cycle C1

The flow of water is reversed by the valve and directed down the riser tube and up through the resin bed. During the backwash cycle, the bed is expanded and debris is flushed to the drain, while the media bed is remixed.

Brine (downflow) — cycle C2

The controller directs water through the brine injector and brine is drawn from the brine tank. The brine is then directed down through the resin bed and up through the riser tube to the drain. The hardness ions are displaced by sodium ions and are sent to the drain. The resin is regenerated during the brine cycle. When the air check valve closes brine drawing finishes, and then the slow rinse phase starts.

Slow rinse (downflow) — cycle C3

Repressurize cycle (hard water bypass flapper open) — cycle C4

This cycle allows the air and water to hydraulically balance in the valve before continuing the regeneration.

Fast rinse (downflow) — cycle C5

The controller value directs water down through the resin bed and up through the riser tube to the drain. Any residual brine is rinsed from the resin bed, while the media bed is re-compacted.

2nd Backwash (upflow) — cycle C6

2nd Fast rinse (downflow) — cycle C7

Brine refill — cycle C8

Water is directed to the brine tank at a rate controlled by the refill controller, to create brine for the next regeneration. During brine refill, treated water is already available at the valve outlet.

Note

For illustration purpose only. Always verify inlet and outlet marking on the valve.

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Installer Manual 255/LOGIX 742-762-764 - Description

From brine tank

To brine Tank

BRINE/SLOW RINSE

C2 and C3

BACKWASH

C1 and C6

SERVICE

REPRESSURIZE

FAST RINSE

C5 and C7

BRINE REFILL

Valve

Valve Valve

Valve

Inlet Outlet Inlet Outlet

Drain

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Installer Manual 255/LOGIX 742-762-764 - Description

Stand-by

Tank 1 Tank 2

When an immediate regeneration is initiated, Tank 2 stay in service whereas tank 1 moves to:

Once Tank 1 has reached the service position, Tank 2 moves to:

Service

3.6. Regeneration Sequence for Twin and Lockout Systems

Note

Perform a first regeneration for each tank, it will synchronize the camshafts if not already synchronized.

Note

When you fill water in the system, repeat operations described on chapter 7.1. Water filling, draining and watertightness inspection, page 58, for each tank.

3.6.1. Twin alternating systems

In this example, tank 1 is in stand-by position whereas tank 2 is in service position. When an immediate regeneration is initiated, tank 2 stay in service whereas tank 1 moves to C5, C6, C7, C8 and to the service position. Once tank 1 reaches the service position, tank 2 moves to C1, C2, C3, C4 and to stand-by position. Cycles repeat themselves so on.

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Installer Manual 255/LOGIX 742-762-764 - Description

Service Service

Tank 1 Tank 2

Tank 2 will not initiate a regeneration while tank 1 is not back in service

3.6.2. Twin parallel systems

Refill first option: off, Pr=0

Tank 1 and tank 2 are both in service position. Depending on the residual capacity, tank 1 or tank 2 will initiate first a regeneration.

In this example tank 1 moves from service position to C1, then to C2, ... until C8 and comes back in the service position. Tank 2 will not initiate a regeneration while tank 1 is not back in service.

Initiate again a regeneration, this time tank 2 will move through the cycles whereas tank 1 stay in service.

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Service Service

Tank 1 Tank 2

Tank 2 will not initiate a regeneration while tank 1 is not back in service

2 hours

Refill first option: on, Pr=1

The refill first option has been designed mainly for twin parallel systems using only one brine tank. It allows a minimum time of 2 hours for brine to be saturated.

Tank 1 and tank 2 are both in service position. Depending on the residual capacity, tank 1 or tank 2 will initiate first a regeneration.

In this example tank 1 moves from service position to C8 and then comes back in the service position for 2 hours. "C0" will then be displayed. After this delay the valve will then regenerate normally but skipping the C8 cycle since the refill will be done first at the next regeneration.

Tank 2 will not initiate a regeneration while tank 1 is not back in service.

Initiate again a regeneration, this time tank 2 will move through the cycles whereas tank 1 stay in service.

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Installer Manual 255/LOGIX 742-762-764 - Description

Service Service

Tank 1 Tank 2

Others tanks will not initiate a regeneration while tank 1 is not back in service

Tank X

Service

...

3.6.3. Lockout "L" systems

The first tank of the system whose capacity is exhausted will be regenerated first. The tank controller will send a signal to all others controllers in the system that will not be able to start a regeneration until it is finished. The others tanks will then regenerate in order of priority according to the remaining capacity.

When you order a 255 - 764L valve, it will be shipped with a standard 255 Logix camshaft. This camshaft does not close the bypass flapper during regeneration, so there will be hard water available at the outlet during all the regeneration. If you are building a multi-simplex system with 255 - 764L valves and you do not want hard water to be bypassed during the regeneration, use one of the following options :

• Use the 255 Logix duplex camshaft on each valve in the system. This camshaft ensures that the

bypass flapper is closed during all the regeneration process. The backwash is then done with treated water of another tank entering through the valve outlet (same principle as for a duplex mode A or P). If you choose this option, do not forget to take into account this additional flow to

be produced in service when sizing your installation. Use a solenoid valve on the valve output and a microswitch kit. The microswitch is mounted on the camshaft and it closes the solenoid valve for the duration of the regeneration. Therefore the valve will

not use water coming from the others tanks.

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Installer Manual 255/LOGIX 742-762-764 - System sizing

4. System sizing

4.1. Recommendations

4.1.1. Injector/DLFC/Refill flow controler-Valve configuration

Vessel diameter

[In]

6 5/10 E [yellow] 0.33 0.9

7 15 F [peach] 0.33 1.2

8 20 G [tan] 0.33 1.6

9 30 H [lt purple] 0.33 2.0

10 35 J [lt blue] 0.33 2.5

12 40 K [pink] 0.33 3.5

13 50 L [orange] 0.33 4.1

14 80 L [orange] 0.33 4.8

Media volume

[L]

Injector Flow

control

Refill flow control

[gpm]

4.2. Cycle time calculation

All the Logix controller range automatically calculates the unit capacity as well as the cycle time. No calculations are therefore required.

Backwash flow

control

[gpm]

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Installer Manual 255/LOGIX 742-762-764 - System sizing

TOTAL

Inlet pressure [bar]

Injector "F" (Peach)

For 7" Tanks

Injector "G" (Tan)

For 8" Tanks

Injector "H" (Light Purple)

For 9" Tanks

Flow rate [l/min]

RINSEBRINE DRAW

Injector "E" (Yellow)

For 6" Tanks

Inlet pressure [bar]

Flow rate [l/min]

Inlet pressure [bar]

Flow rate [l/min]

Inlet pressure [bar]

Flow rate [l/min]

4.3. Injector flow rates

The following tables represent the injectors flow rate as a function of the inlet pressure for the different injector sizes.

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Injector "K" (Pink)

For 12" Tanks

Injector "L" (Orange)

For 13 " and 14" Tanks

Injector "J" (Light Blue)

For 10" Tanks

TOTAL RINSEBRINE DRAW

Inlet pressure [bar]

Flow rate [l/min]

Inlet pressure [bar]

Flow rate [l/min]

Inlet pressure [bar]

Flow rate [l/min]

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Installer Manual 255/LOGIX 742-762-764 - System sizing

4.4. Resin exchange capacity upon salt dosage for standard efficiency

Salt amount Corresponding resin exchange capacity

grams /

liter of resin

50 29.9 2.99 1.67

60 34 3.4 1.9

70 37.5 3.75 2.09

80 40.6 4.06 2.27

90 43.4 4.34 2.42

100 45.9 4.59 2.56

110 48.2 4.82 2.69

120 50.2 5.02 2.8

130 52.1 5.21 2.91

140 53.8 5.38 3.01

150 55.5 5.55 3.1

170 58.5 5.85 3.27

200 62.7 6.27 3.5

230 66.9 6.69 3.74

260 71 7.1 3.97

290 75.3 7.53 4.21

grams /

liter of resin as CaCO

°f.m3 /

liter of resin

°d.m3 /

liter of resin

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+ 64 hidden pages

Pentair Autotrol 255, Logix 764, Logix 742, Logix 762 Installer Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1. Generalities

1.1. Scope of the documentation

1.2. Release management

1.3. Manufacturer identifier, product

1.4. Intended use

1.5. Abbreviations used

1.6. Norms

1.6.1. Applicable norms

1.6.2. Available certificates

1.7. Procedure for technical support

1.8. Copyright

1.9. Limitation of liability

1.10. Scan & Service application

2. Safety

2.1. Safety pictograms definition

2.2. Serial label location

2.3. Hazards

2.3.1. Personnel

2.3.2. Material

2.4. Hygiene and sanitization

2.4.1. Sanitary issues

2.4.2. Hygiene measures

3. Description

3.1. Technical specifications

3.1.1. Performance flow rate characteristics (single valve)

3.2. Outline drawing

3.3. Description and components location

3.4. Options available on the valve

3.4.1. Autotrol Logix residential/commercial series auxiliary microswitch kits

3.4.1.1 Front mount

3.4.1.2 Top plate mount

3.5. System regeneration cycle (8-cycles operation)

3.6. Regeneration Sequence for Twin and Lockout Systems

3.6.1. Twin alternating systems

3.6.2. Twin parallel systems

3.6.3. Lockout "L" systems

4. System sizing

4.1. Recommendations

4.1.1. Injector/DLFC/Refill flow controler-Valve configuration

4.2. Cycle time calculation

4.3. Injector flow rates

4.4. Resin exchange capacity upon salt dosage for standard efficiency