Pentair Logix 740 Operation Manual
  1. Manuals
  2. Brands
  3. Pentair Manuals
  4. Controller
  5. AUTOTROL LOGIX 740
  6. Operation manual

Pentair Logix 740 Operation Manual

255 and performa series valves (268, 268fa)
Hide thumbs Also See for Logix 740:
Table of Contents

Advertisement

Quick Links

See also: User Manual , Installation Manual
740/760 Control
255 and Performa Series
Valves (268, 268FA)
Operation Manual
For Sales & Service questions please
contact your dealer:
Your local dealer is:

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Logix 740 and is the answer not in the manual?

Questions and answers

David Smith
June 29, 2025

water leaking from behind motor some way ?

0

Related Manuals for Pentair Logix 740

Summary of Contents for Pentair Logix 740

  • Page 1 740/760 Control 255 and Performa Series Valves (268, 268FA) Operation Manual For Sales & Service questions please contact your dealer: Your local dealer is:...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS LOGIX™ SERIES INSTALLER QUICK-START SHEET MANUAL OVERVIEW How To Use This Manual EQUIPMENT INSTALLATION General Warnings And Safety Information Valve Features Location Selection Water Line Connection Drain Line Connection Overflow Line Connection Regenerant Line Connection Electrical Connection Valve Camshaft SYSTEM DISINFECTION Disinfection Of Water Conditioners...

  • Page 3: Logix™ Series Installer Quick-Start Sheet

    LOGIX™ SERIES INSTALLER QUICK-START SHEET Logix Series Controllers See Determining If You Have a 740 or 760 Control on page 24 to identify your controller. 740 Controller - Electronic time clock control capable of doing 7-day (day of week) regeneration, or up to a 99 interval day regeneration. This control will operate both in a conditioner (softener) or 3-cycle filter mode with the same controller.
  • Page 4 Initial Start-up Step-by-step Instructions Step 1: Program System Size SU MO TU WE TH FR SA DAYS Time & Day Regen Time & Day This step may have been performed by your system’s OEM manufacturer. In Salt this case, proceed to step 2. Capacity •...
  • Page 5 • Use the UP or DOWN buttons to change to the number of days desired. Standard Setting • Press SET to accept the regen frequency, and advance to the next cycle. SU MO TU WE TH FR SA DAYS Step 6: Amount of Regenerant used per Regeneration Time &...
  • Page 6 Manual Regeneration Procedures To Initiate a Manual Regeneration: • Press REGEN once for delayed regeneration. System will regenerate at next set regen time (2:00 AM). A flashing regen (recycle) symbol will be displayed. • Press and hold REGEN for 5 seconds to initiate immediate manual regeneration.

  • Page 7: Manual Overview

    MANUAL OVERVIEW How To Use This Manual This installation manual is designed to guide the installer through the process of installing and starting conditioners featuring the 700 Logix series controllers. This manual is a reference and will not include every system installation situation.

  • Page 8: Equipment Installation

    EQUIPMENT INSTALLATION General Warnings And Safety Information The 268 and 255 water conditioner’s control valve conforms to NSF/ANSI 44 and 61 for materials and structural integrity only. Generic systems were tested and certified by WQA as verified by the performance data sheet. Electrical There are no user-serviceable parts in the AC adapter, motor, or controller.
  • Page 9 General • Observe all warnings that appear in this manual. • Keep the media tank in the upright position. Do not turn on side, upside down, or drop. Turning the tank upside down will cause media to enter the valve. •...
  • Page 10 5. Fast Rinse (Downflow) — Cycles C5, C7: The control directs water down through the resin bed and up through the riser tube to the drain. Any remaining brine residual is rinsed from the resin bed. 6. Brine Refill — Cycle C8: Brine refill occurs during a portion of the fast rinse cycle.

  • Page 11: Valve Features

    Valve Features Figure 2 255 Valve Identification One Piece Valve Disc Spring Optical Sensor Control Module Mount Refill Controller Right Side Injector and Cap Manifold Connection Air Check Check Ball Regenerant Tank Tube Connection Valve Discs Camshaft Motor Left Side Outlet Injector Drain...
  • Page 12 Figure 3 Performa Valve Identification One Piece Valve Disc Spring Valve Discs Optical Sensor Control Module Mount Injector and cap Refill Controller Regenerant Tube Connection Camshaft Motor Outlet Drain Injector Screen Filter Inlet Backwash Drain Control EQUIPMENT INSTALLATION Rev E...

  • Page 13: Location Selection

    Figure 4 700 Series Controller Identification LCD Display SU MO TU WE TH FR SA DAYS Time & Day Regen Time & Day Salt Capacity x100 Hardness Front Manual Regen Button Down Button Set Button Up Button AC Adapter (low voltage) No Salt Detector Input Right Side...

  • Page 14: Water Line Connection

    Outdoor Locations When the water conditioning system is installed outdoors, several items must be considered. • Moisture — The valve and 700 controller are rated for NEMA 3 locations. Falling water should not affect performance. The system is not designed to withstand extreme humidity or water spray from below.
  • Page 15 Figure 5 Series 256 bypass for use with 255 valve body Normal Operation In Bypass Figure 6 Series 1265 bypass for use with Performa valve bodies Normal Operation In Bypass Water Water Conditioner Conditioner Figure 7 Typical Globe Valve Bypass System Normal Operation In Bypass Water...

  • Page 16: Drain Line Connection

    WARNING: The inlet water must be connected to the inlet port of the valve. When replacing non-Pentair Water valves, the inlet and outlet may be reversed. It is also possible for the plumbing to be installed in an opposite order.

  • Page 17: Overflow Line Connection

    Figure 8 Drain Line Connection Right Way Air Gap Drain NOTE: Waste connections or drain outlet shall be designed and constructed to provide for connection to the sanitary waste system through an air-gap of 2 pipe diameters or 1 inch (22 mm) whichever is larger. WARNING: Never insert drain line directly into a drain, sewer line, or trap (Figure 8).

  • Page 18: Regenerant Line Connection

    Figure 9 Overflow Line Connection Overflow Fitting Drain Tubing Secure hose in place Air Gap Drain Regenerant Line Connection (not used with 3-cycle filter system) The regenerant line from the tank connects to the valve. Make the connections and hand tighten. Be sure that the regenerant line is secure and free from air leaks.
  • Page 19 Figure 11 Regenerant Connection for Performa Valve Regenerant Line Connection NOTE: Be sure to use plumbing connection tube when attaching regenerant line connections to the Performa valve. NOTE: When installing a 3-cycle filter (253 or 263 valve) use a cap on the regenerant line connection to prevent water seepage from the port.

  • Page 20: Electrical Connection

    Figure 12 Regenerant Tank Check Valve (not provided)* * Furnished as an option from conditioner system manufacturer. Electrical Connection CAUTION: This valve and control are for dry location use only unless used with a Listed Class 2 power supply suitable for outdoor use. All 700 Series controllers operate on 12-volt alternating current power supply.

  • Page 21: Valve Camshaft

    100 VAC, 120 VAC and 230 VAC AC Adapters: Make sure power source matches the rating printed on the AC adapter. NOTE: The power source should be constant. Be certain the AC adapter is not on a switched outlet. Power interruptions longer than 8 hours may cause the controller to lose the time and day settings.
  • Page 22 Regeneration Cycle Indicators C0 = Treated Water - normal operation mode C1 = Backwash Cycle C2 = Regenerant Draw Cycle (not used in filter mode) C3 = Slow Rinse Cycle (not used in filter mode) C4 = System Pause C5 = Fast Rinse Cycle 1 C6 = Backwash Cycle 2 (not used in filter mode) C7 = Fast Rinse Cycle 2 (not used in filter mode) C8 = Regenerant Refill (not used in filter mode)

  • Page 23: System Disinfection

    SYSTEM DISINFECTION Disinfection Of Water Conditioners The materials of construction of the modern water conditioner will not support bacterial growth, nor will these materials contaminate a water supply. During normal use, a conditioner may become fouled with organic matter, or in some cases with bacteria from the water supply.

  • Page 24: Determining If You Have A 740 Or 760 Control

    Figure 16 Model number: either 740, 740C or 760, 760C ® Pentair Water USA Glendale, WI Operations Model 12 V/ 60 Hz/ VERSION 1.02 WO#4340000 Ser.

  • Page 25: General 700 Series Instructions

    GENERAL 700 SERIES INSTRUCTIONS 700 SERIES CONTROLLER Power Loss Memory Retention The 700 Series controllers feature battery-free time and date retention during the loss of power. This is designed to last a minimum of 8 hours depending on the installation. The controller will continue to keep time and day in dynamic memory while there is no AC power.
  • Page 26 Variable Reserve Function The 700 Series metered-demand volumetric controllers (760 and 760C) are designed to have a variable reserve feature. This feature automatically adjusts the reserve to the end-user’s water usage schedule. A variable reserve saves salt and water by only regenerating when absolutely necessary, and ensures enough soft water for typical high-water usage days.

  • Page 27: Display Icons 700 Controller

    DISPLAY ICONS 700 CONTROLLER Figure 17 SU MO TU WE TH FR SA DAYS Time & Day Regen Time & Day Salt Capacity x100 Hardness NOTE: In normal operation and during programming, only a few of the icons will actually be displayed. 1.

  • Page 28: Keypad - Buttons

    14. The display cursor is next to "REGEN TIME & DAY" when programming the time of regeneration and the days of regeneration. 15. The display cursor is next to "TIME & DAY" when programming the current time and day. 16. The hourglass is displayed when the motor is running. The camshaft should be turning.

  • Page 29: Regeneration Modes

    Programming Conventions The 700 Series controller is programmed using the buttons on the keypad. The programming instructions will be described two ways whenever a section has keypad input. First, a table shows simplified instructions. Second, text follows that describes the action. In each table: "Action"...

  • Page 30: 740/760 Series Initial Power-Up

    To Advance Regeneration Cycles: • Press and hold SET - showing current cycle time. • Simultaneously press SET and UP to advance on cycle. An hourglass will display while cam is advancing. When cam reaches next cycle, "C2” will be displayed. •...

  • Page 31: Initial Start-Up Step-By-Step Instructions

    Initial Start-up Step-By-Step Instructions For FA filter applications, please program as normal below. See section Programming the 700 for 5-Cycle Filter Applications. Step 1: Program System Size SU MO TU WE TH FR SA DAYS Time & Day This step may have been performed by your system’s OEM manufacturer. In Regen Time &...
  • Page 32 Step 4: Set Regen Time SU MO TU WE TH FR SA DAYS Time & Day • 2:00 (AM) is the default time of regeneration. To accept this time, press Regen Time & Day the DOWN button to move to step 5. Salt •...
  • Page 33 Filter Backwash Time (Filter Mode Only) If the system is set up as a filter, the regenerant amount is unnecessary. The controller deactivates the regenerant amount setting, and changes to an adjustable backwash time in minutes. • Press SET to change the time. •...

  • Page 34: Placing Conditioner Into Operation (Turning On The Water)

    PLACING CONDITIONER INTO OPERATION (turning on the water) Conditioner and FA Filter Start-Up After you have performed the previous initial power-up steps, you will need to place the conditioner into operation. Follow these steps carefully, as they differ from previous valve instructions. WARNING: Do not rotate the camshaft by hand or damage to the unit may occur.
  • Page 35 If the tank has a salt platform in the bottom of the tank, add water until the water level is approximately 1 inch (25 mm) above the platform. NOTE: We recommend that you do not put regenerant into the tank until after the control valve has been put into operation.
  • Page 36 hose connections. C2 should be displayed. 8. If the water level is receding from the regenerant tank you can then advance the controller back to the treated water (C0) position by pressing SET and the UP buttons simultaneously to advance the controller to the C0 position.

  • Page 37: Programming The 700 For 5-Cycle Filter Applications

    PROGRAMMING THE 700 FOR 5-CYCLE FILTER APPLICATIONS Manganese Greensand Systems Sizing FA Filters Potassium permanganate regenerating iron filters should be sized for the appropriate backwash and injector sizes. Backwash Controller Be sure to choose the appropriate backwash flow rate control (see Parts section) as recommended by your media manufacturer.
  • Page 38 demand: multiply the gallons of water used per day (300) by the ppm of iron content (10) = 3000 ppm of daily capacity usage. Now take the system capacity (10,000), divided by the daily demand (3,000) = 3.3 days of capacity. Since you will run out of capacity before the beginning of the fourth day, the proper setting for days between regeneration is 3 days.

  • Page 39: 700 Series Advanced Programming

    700 Series Advanced Programming The 700 Series controllers are designed to operate by only setting the time of day and the day of the week. The remaining settings have been set at the UP arrow factory. These default settings will work for most applications. To change a setting: Action Duration...

  • Page 40: Resetting The Logix Control

    Accessing History Values The Logix control features a review level that displays the operation history of the system. This is a great troubleshooting tool for the control valve. To access history values, press and hold SET and DOWN for five seconds to view the "H"...

  • Page 41: 740/760 Professional Programming

    740/760 PROFESSIONAL PROGRAMMING NOTE: If a button is not pushed for thirty seconds the controller returns to normal operation mode. Pushing the UP and DOWN arrows for 5 seconds returns the controller to normal operation. NOTE: Any setting that is a time display will not show "AM" for times between 12:00 midnight and 12:00 noon.
  • Page 42 To enter Level II (Professional Programming) and change a setting: UP arrow Action Duration Display Enter Level II UP and 5 sec. P1 display programming DOWN Return to operation UP and 5 sec. Time and day of week DOWN For Regeneration DOWN arrow Increment through...

  • Page 43: Valve Service

    VALVE SERVICE Cover The cover provides protection for the controller, wiring, and other components. This cover will be removed for most service and maintenance. When installed, the cover provides NEMA 3 water protection. This protects from falling water up to 30 degrees from vertical. To remove cover: 1.

  • Page 44: Drive Motor

    To install control module: 1. Be sure the power is disconnected. 2. Check model. 3. Check routing of wires and plug them into the controller. Connectors will snap in place. Be sure that wires are properly managed through the clips on top plate.

  • Page 45: Optical Sensor

    Optical Sensor The optical sensor is mounted to the top plate. The camshaft cup rotates through the sensor and the slots are detected. A signal is sent to the controller for each slot. NOTE: Damaged sensors should be replaced. Sensors may be cleaned with compressed air or a soft brush.

  • Page 46: Camshaft

    Camshaft The camshaft has several lobes that push open the valve discs as the camshaft rotates. Rotation is controlled by a drive motor that drives a gear at the rear of the camshaft. The front end has a cup with markings and slots. WARNING: The camshaft slots are molded to exact dimensions.
  • Page 47 NOTE: When replacing/removing camshaft, make sure not to damage or mis-align the optical sensor. Hold the sensor in position while removing camshaft. 6. Move the camshaft backwards, away from the controller. 7. Lift the loose front end up and out. To install camshaft: 1.

  • Page 48: Wiring Harnesses

    Wiring Harnesses The wiring harnesses are designed to fit one way. The connectors are unique to the port they plug into. The wires are held in place by clips and the connectors latch in place. Figure 18 - Wire Harness Routing Do not run wires through holes in topplate.

  • Page 49: Microswitch (Optional Under The Cover)

    This 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). Microswitches are available as kits from Pentair Water or a standard microswitch can be used as well.

  • Page 50: Microswitch (Optional - Front Of Camshaft)

    This cam can be adjusted to activate the microswitch at any time during the regeneration cycle. The front end cam switch is available as a kit from Pentair Water. WARNING: This switch will normally control an event on another piece of equipment.

  • Page 51: Spring (Valve Discs)

    Spring (Valve Discs) This spring is a one-piece metal spring that applies pressure to the valve discs holding them closed. The rotating camshaft overcomes this pressure to open the valve discs as needed. The shape of the spring is critical for proper operation.

  • Page 52: Relay (Optional)

    Relay (Optional) WARNING: The Pentair Water valve is rated for low voltage (less than 48 volts) microswitch components only. Using a high voltage switch may result in damaged valves or fire and may interfere with electronic control function.

  • Page 53: Terminal Block (Optional)

    6. Clip wires with plastic tie-wrap to ensure that the wires do not tangle in camshaft. Terminal Block (Optional) WARNING: The Pentair Water valve is rated for low voltage microswitch components only. Using a high voltage switch may result in damaged valves or fire and may interfere with electronic control function.

  • Page 54: Top Plate

    The top plate holds the valve discs in place during operation. This plate is removed to allow cleaning and replacing the valve discs. NOTE: The Pentair Water valve discs are made from a chloramine resistant severe service rubber. The valve discs will usually not need to be changed.
  • Page 55 To install the top plate: NOTE: All valve discs should be in position. Use the same screws that were removed to reassemble the top plate. WARNING: Follow the procedure to engage the screws with the existing threads. If the same threads are not used, the holding power of the screw is lost.

  • Page 56: Parts And Accessories

    PARTS AND ACCESSORIES 255 Valve Exploded View 18A* *Warning: Do not use flow control ball with #18A. PARTS AND ACCESSORIES Rev E...

  • Page 57: 255 Valve Parts List

    255 Valve Parts List Part Part Code Description Qty. Code Description Qty. 1244650 255 Valve Assembly, w/o Flow Controls 1000269 Injector Cap with O-Ring 1033784 255 Tank Adapter New Style Drain Control Assembly with O-Ring 1010429 O-Ring BN 1000209 No. 7 (1.3 gpm; 4.9 Lpm) 1010428 O-Ring EP 1000210 No.
  • Page 58 255 Valve Parts List (Continued) Part Part Code Description Qty. Code Description Qty. Piping Boss Tube Adapter Kits Piping Boss Kit (includes hardware): 1001606 3/4-inch Copper Tube Adapter Kit 1040277 3/4-inch NPT, Brass 3/8-inch NPT Drain 1001670 1-inch Copper Tube Adapter Kit 1040278 1-inch NPT, Brass 1/2-inch NPT Drain 1001608 22-mm Copper Tube Adapter Kit 1040281 3/4-inch BSPT, Brass 3/8-inch BSPT...

  • Page 59: Performa Exploded View

    Performa Exploded View 10A* *Warning: Do not use the flow control ball with #10A. PARTS AND ACCESSORIES Rev E...

  • Page 60: Performa Parts List

    Performa Parts List Part Part Code Description Qty. Code Description Qty. 1035807 Valve Assembly w/o Flow Controls 1035735 “K” Injector (High Efficiency) - Pink 1235338 Top Plate, 268/700 Series Valves (12-inch tank) 1235339 Valve Disc Spring, One Piece, Performa 1035736 “L” Injector (High Efficiency) - Orange Valve (13 &...

  • Page 61: Logix 700 Series Controllers Parts List

    Part Part Code Description Qty. Code Description Qty. Electronics Modules/Controllers AC Adapter 1242146 Logix 740 Controller 1000810 Japanese 1242148 Logix 740F Controller 1000811 North American 1242163 Logix 760 Controller 1000812 Australian 1242166 Logix 760F Controller 1000813 British Electrical Components 1000814 European 1235269 Motor/Optical Cable Assembly, 700 1030234 Transformer Extension Cord 15 foot (4.5m)

  • Page 62: Troubleshooting

    TROUBLESHOOTING 700 Series Controller Troubleshooting Problem Possible Cause Solution ERR 1 is displayed Controller power has been connected and Press the UP arrow and the control should the control is not sure of the state of the reset. operation. ERR 2 is displayed Controller power does not match 50 or 60 Disconnect and reconnect the power.
  • Page 63 System Troubleshooting Problem Possible Cause Solution 1. Brine tank a. Uncontrolled brine refill flow rate. a. Remove brine control to clean ball and seat. overflow. b. Air leak in brine line to air check. b. Check all connections in brine line for leaks. Refer to instructions.
  • Page 64 Improper drain control for injector. d. Too small of a drain control with a larger injector will reduce draw rates. e. Drain control clogged with resin or other debris. e. Clean drain control. © 2008 Pentair Residential Filtration, LLC P/N 3003714 Rev. E NO08...

This manual is also suitable for:

Logix 700 seriesLogix 740cLogix 760Logix 760c

Table of Contents

Save PDF