Logix 764 Operation Manual Models: 255 Twin Alternating Twin Parallel Single with Remote Regeneration Start Multi-Single Tank with Lockout
Table of Contents Safety Information 4 How To Use This Manual 5 Location Selection 8 Outdoor Locations 6 Installation 8 Location Selection Water Line Connection Drain Line Connection Brine Line Connection Brine Tank Overflow Line Connection Electrical Connection 8 8 9 9 9 10 Disinfection of Water Conditioning Systems 11 System Operation 12 Cycle Water Flows 12 Camshaft Cycle Positions 13 764 Control Operation 13 Display Icons & Cursors 14 Keypad — Buttons 15 Placing Water Condition
Safety Information • This water conditioner’s control valve conforms to UL/CE Standards. Generic valves were tested and certified for compliance as verified by the agency listing. Do not allow this water conditioning system to freeze. Damage from freezing will void this water conditioning system’s warranty. • Operating ambient temperature: 34° to 120°F (1° to 49°C). • Operating water temperature: 34° to 100°F (1° to 38°C).
How To Use This Manual Icons That Appear In This Manual This installation manual is designed to guide the installer through the process of installing and starting water conditioning systems featuring the Logix 764 controller. WARNING: Failure to follow this instruction can result in personal injury or damage to the equipment. This manual is a reference and will not include every system installation situation.
Outdoor Locations When the water conditioning system is installed outdoors, several items must be considered. • Figure 3 Remote Start/Multi-Tank Lockout Cable Moisture – The valve and control 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. Examples are: constant heavy mist, near corrosive environment, or upwards spray from sprinkler.
Unconditioned water in Conditioned water out Figure 6 Typical Plumbing for Twin Tank Systems.
WARNING: Filter media may need to be properly conditioned before the filter is placed into full operation. Consult the original equipment manufacturer for proper procedure. Unit in Service BY BY PA S S PA S S Location Selection The following considerations must be taken into account when selecting the location for the water conditioning system. Unit in Bypass • Locate the system as close to a drain as possible.
Drain Line Connection Note: Standard commercial practices are expressed here. Local codes may require changes to the following suggestions. Check with local authorities before installing a water conditioning system. The system should be above, and not more than 20 feet (6.1 m) from a drain. Connect an appropriate fitting and 1/2-inch (1.3-cm) plastic tubing to the drain line connection on the rear of the control valve. If the backwash flow is more than 5 gpm or if the unit is located more than 20 feet (6.
Electrical Connection Note: Do not elevate the overflow line higher than 3 inches (7.6 cm) below the bottom of the overflow fitting. Do not tie into the drain line of the control unit. The overflow line must be a direct, separate line from the overflow fitting to the drain, sewer, or tub. Allow an air gap as in the drain line connection, Figure 10. Caution: This valve and control are for dry location use only unless used with a Listed Class 2 power supply suitable for outdoor use.
Disinfection of Water Conditioning Systems Calcium Hypochlorite Calcium hypochlorite, 70% available chlorine, is available in several forms including tablets and granules. These solid materials may be used directly without dissolving before use. The materials of construction in the modern water conditioning system will not support bacterial growth, nor will these materials contaminate a water supply.
System Operation Treated Water (Downflow) Repressurization – Cycle C4 Untreated water is conditioned as it flows through the resin bed and up the riser. Pressure is balanced in the valve before continuing the regeneration. Backwash (Upflow) – Cycle C1 Fast Rinse (Downflow) - Cycle C5 Flow is reversed by the control valve, directed down the riser, up through the resin bed and sent to drain. The bed is expanded and debris is flushed to the drain.
Camshaft Cycle Positions 3 = Slow Rinse Cycle The front end of the camshaft has an indicator cup. The cup has slots in the outer edge and cycle numbers on the inside face (Figure 12). 5 = Fast Rinse Cycle 1 4 = System Pause 6 = 2 nd Backwash 7 = 2 nd Fast Rinse Remove the cover and look over the top of the 764 control to view the cycle numbers. The number at the top indicates the current cycle position of the control valve.
Display Icons & Cursors 14 SU MO TU 13 8 10 9 16 7 2 1 WE TH FR SA DAYS a Time/Day Regeneration Time 15 12 Salt Amount x2 13 a 26 Capacity Hardness 3 PM MIN g/L KG CHP 4 5 6 x100 17 Lbs/ft 3 25 22 21 1. This cursor is displayed when the days between regeneration are being programmed (used with .5 to 99 day regeneration programming). 2. One of these cursors is displayed to indicate which day will be programmed into the controller. 20 19 11.
Programming Conventions 23. Parameter (P). Displayed only in Level II Programming. The number displayed by #23 identifies which parameter is currently displayed. The 700 series controller is programmed using the buttons on the keypad. The programming instructions are described two ways whenever a section has keypad input. 24. Cycle (C). The number displayed by #23 is the current cycle in the regeneration sequence. 25. Hardness setting First, a table shows simplified instructions.
Placing Water Conditioning System Into Operation After you have performed the installation steps, the conditioner will need to be placed into operation. Follow these steps carefully, (pages 16 to 21) as they differ from previous Autotrol valve instructions. Note: Do not plug in the power supply until step 5. The tank(s) will fill with water. The air will exit through the faucet. When water flows steady from the faucet, the tank(s) are purged.
These cam movements may take up to 5 minutes. Table 2 Resin Volume - 0.25 ft3 and 5 Liter Steps Resin Volume Tank Dia (inches) Injector US Metric 6 E 0.25 5 6 E 7 F 0.50 15 8 G 0.75 20 9 H 9 H 1.00 30 10 J 1.25 35 10 J 1.50 40 12 K 12 K 1.75 50 12 K 2.00 55 13 L 13 L 2.25 65 14 L 2.50 70 14 L 14 L 2.75 80 14 L 3.
Level l Programming - 764 Control with 255 Valve, 8 Cycle Conditioner Screen SU MO TU Buttons to Press Description Range WE TH FR SA DAYS Time/Day Regeneration Time then Salt Amount or 1. Resin Volume Select correct resin volume 2. Time of Day (12 hr.) Set to time of day press Capacity Cubic feet: 0.25 to 3.00 Hardness SU MO TU WE TH FR SA DAYS Time/Day PM Regeneration Time Salt Amount press then Capacity or Note: Setting includes PM indicator.
Placing Water Conditioning System Into Operation (continued) B. 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. Caution: If your system is a 255A (Alternating) go to “Quick Cyling the Control for 255A Systems”. Note: It’s recommended that you do not put regenerant into the tank until after the control valve has been put into operation.
255 Alternating tank systems have one Logix 764 control that is mounted on tank 1. Tank 2 has a blank faceplate and the tank 2 valve is controlled by the Logix 764 control on tank 1. C. Observe that water is being drawn from the regenerant tank for at least three minutes. If the water level does not recede, check all regenerant line connections for air leaks. 8. If the water level is receding from the regenerant tank you can quick cycle the control to the C8 Regenerant tank refill position.
The Alternating Water Conditioning System is Now Fully Operational 2. Press and hold the button for 5 seconds. This will start the second regeneration. Quick cycle as Tank 2 moves through cycles: Note: After any control reset (valve type or system change, etc.) it is necessary to initiate a manual regeneration and quick cycle through it. This will ensure the control and cam are synchronized.
In Service Display SU MO TU Level I Used to program control for normal applications. Level II (P-Values) Allows the installer to customize programming for non-standard applications. WE TH FR SA DAYS Time/Day Level Ill (C-Values) Allows the installer to adjust the length of select cycles for non-standard applications. Regeneration Time Salt Amount Level IV History (H-Values) Allows access to historical information for troubleshooting the system.
Level II Programming – P Values ll parameters will not need to be adjusted as the default settings accommodate most applications. Contact your Water Treatment Professional before attempting any programming. Level II program parameters can be adjusted to fine-tune the conditioner’s operation. The parameters are accessible by pressing and holding the UP and DOWN buttons until the control displays a “P” value. Note: The control must be in the home position to change settings.
Programming the Lockout Feature Salt Setting All Level I parameters can be locked out when the control is in Level ll programming. Simply press the REGEN button during Level ll programming and a Lock Icon will appear indicating that the specific setting has been locked out. When locked out, the setting cannot be adjusted. To disable the Lock Out Feature, press the REGEN button when in Level ll. The lock icon will not be displayed. The default P6 salt setting is set at 9 lbs/cu ft.
Level lll Cycle Programming – C Values accessible by pressing and holding the UP and SET buttons until the display shows a “C” value. Several Level III program parameters can be adjusted to fine-tune a conditioners operation for non-standard applications. Typically these parameters will not need to be adjusted as the default settings accommodate most applications. Contact your Water Treatment Professional before attempting any programming.
Level IV Viewing History - H Values Historical information can be viewed by pressing the SET and DOWN buttons simultaneously, with the 764 control in the home position. Release both buttons when the control displays an “H” value. Press the UP or DOWN buttons to navigate to each setting.
Manual Regeneration Options Note: The tank in service (on-line) cannot be regenerated while the other tanks are isolated. Water for backwash would not be available. The 764 control features several options that offer additional flexibility for manually regenerating the conditioner. On alternating systems the tank in standby will move through regeneration to service. The tank in service will move through regeneration to standby.
Regeneration Modes for Parallel Systems Table 5 P16 = 0 Parameter P16 is used to determine the method for demand initiated regeneration. Four regeneration modes are possible. • • • • P16 = 0, Delayed Regeneration with a Smart Reserve Regenerations will start only at the Time of Regeneration entered in P2. A tank is regenerated if the capacity remaining in that tank is below the minimum required capacity needed to meet the next days calculated water usage requirement.
Wiring Diagrams Connecting the Logix 764 Twin Alternating or Parallel Controls The twin sensor and extension cables are used for twin unit parallel and alternating applications. Four standard connections are required for operation; the power transformer, the flow sensor, motor/optical sensor, and the connection between tank 1 and tank 2 controls. Figure 15 outlines these standard features. Logix 764 control on Tank 1 BRN ORG WHT YEL BL 80 in.
Connecting the Logix 764 Multi Single Tank Control Logix 764 control on Tank 1 RED BLK GRN RED BLK GRN Logix 764 control on Tank 2 Repeat for all remaining tanks Logix 764 control on Tank 3 RED BLK GRN RED BLK GRN Note: Cable PN 3019464 sold separately.
Parts Lists 255 Exploded View & Parts List 7 8 6 12 13 11 9 14 5 3 10 4 15 24 29 2 1 14 23 16 17 25 19 18 26 20 27 21 22 28 31
Item Part Number 1 3014650 2 1244650 3 1235340 4 1234170 5 Description Part No. Description Qty. Qty. Item 764 Series Control 1 17 1000269 Injector Cap with O-Ring 1 Valve Assembly w/o Flow Controls 1 18 1243511 0.
Bypass Valve and Turbine Adapter Bypass 1 Inlet Outlet Drain Turbine Adapter 2 Item 1 * * 2 Part No. 1040769 1034301 1034302 1032347 Description 256 Bypass Kit, 256 Rotor Replacement Kit, 256 Rotor Seals (2), O-Rings (4), Clips (2) Assy, Adapter 1-inch Turbine included with 255A, P and L valves *Not Shown 33 Qty.
Manifold Kits Part No. Description 3019931 255 Manifold Kit, 1-in, PVC w/256 Bypass Kit Includes: Pipe Fitting, Tee, 1-in Pipe Fitting, Elbow, Sch 40, 1-in, PVC Pipe Fitting, Sch 40, 1-in, Str Elbow, PVC Pipe Fitting, Sch 40, 1-in, Coupling,PVC Gasket, 1.69 OD x 1.06 ID x 0.13 T, EP Adapter Pipe, Soc Connector, 1-in, CPVC, Gray Pipe, 1-in, Sch 40 x 12.5 in. long, PVC, 255 Ry Pipe-Tube Adapter Nut, 1.42 ID, Universal 256 Bypass w/Install Kit, No Adapters. Single Pack Qty. 1 2 2 4 2 4 4 4 4 2 Part No.
Troubleshooting 764 Controller – Error Codes & 255 ”L” with Check Salt Light Problem Possible Cause Solution ERR 1 is displayed. Program settings have been corrupted. Press any key and reprogram Level I settings. ERR 3 is displayed. Controller on tank 1 does not know the position of the camshaft. Camshaft should be rotating to find Home position. Wait for two minutes for the controller to return to Home position. The hourglass should be flashing on the display indicating the motor is running.
ERR 4 is displayed. If single tank system.. Verify system setting is programmed to 255 “L”. Controller on tank 2 does not know the position of the camshaft. Camshaft should be rotating to find Home position. Wait for two minutes for the controller to return to Home position. The hourglass should be flashing on the display indicating the motor is running. Camshaft on tank 2 is not turning during ERR 4 display. Check that motor is connected.
Hard water leakage after regeneration. a. Improper regeneration. a. Repeat regeneration after making certain correct regenerant dosage was set. b. Leaking of external bypass valve. b. Replace bypass valve. (Contact dealer). c. O-Ring around riser pipe damaged. c. Replace O-ring d. System capacity too low due to incorrect resin volume setting d. Reset control and program resin volume to correct setting a. Low water pressure. a. Make correct setting according to instructions. b.
© Copyright 2007 General Electric Company P/N 3019624 Rev A
