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Wayne Vista Series Service

Blending and non-blending suction pumps and remote dispensers
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SERVICE
Vista Blending
and Non-blending
Suction Pumps and
Remote Dispensers

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Summary of Contents for Wayne Vista Series

  • Page 1 SERVICE Vista Blending and Non-blending Suction Pumps and Remote Dispensers...
  • Page 2 WARNING BEFORE YOU BEGIN Dispensers have both electricity and a hazardous, flammable and potentially explosive liquid. BE CAREFUL! WARNING More than one disconnect switch may be required to de-energize the dispenser for mainte- nance and servicing. Do not take chances—use a voltmeter to make sure ALL circuits in the dispenser are de-energized.
  • Page 3 Vista Blending Dispensers and Non-blending Suction Pumps and Remote Dispensers Service Manual November 1992 Part No. 917543 Rev. A...
  • Page 4 Part No. 917543 Rev. A November 1992...

  • Page 5: Table Of Contents

    5.3. Meter ........................38 5.3.1 Meter Adjustment ..................38 5.4. Blend Valve ......................43 5.5. Compact Pumping Unit ................... 43 5.5.1. Priming the Compact Pumping Unit ............43 5.6. Wayne Sump Assembly ................... 45 November 1992 Part No. 917543 Rev. A...
  • Page 6 TABLE OF CONTENTS, continued Title Page 6. TROUBLESHOOTING GUIDE ..................... 47 Sale display and unit price displays are blank ................ 48 Sale display on. Unit will not respond to individual function switch........48 Sale display on. Unit will not respond to any function switches ..........48 Unit price displaying 0.000 ....................
  • Page 7 TABLE OF CONTENTS, continued Title Page 7. COMPONENT REPLACEMENT, continued 7.2. Hydraulic Component Replacement ................ 67 7.2.1. Installation of Diaphragm ................. 67 7.2.2. Diaphragm Valve ..................68 7.2.3. Actuator ....................68 7.2.4. Meter ......................69 7.2.5. Blend Valve ....................69 APPENDIX A TROUBLESHOOTING FLOWCHARTS ............
  • Page 8 TABLE OF CONTENTS, continued Title Page LIST OF FIGURES, continued Figure 5-3A. Blending Flow Control Valve “On” Slow Flow ........... 31 Figure 5-3B. Non-blending Flow Control Valve “On” Slow Flow ..........32 Figure 5-4A. Blending Flow Control Valve “On” Full Flow ............. 34 Figure 5-4B.

  • Page 9: Appendices

    TABLE OF CONTENTS, continued Title Page APPENDICES APPENDIX A TROUBLESHOOTING FLOWCHARTS, continued Flowchart A-10. 12 Fault Code ..................82 Flowchart A-11. 13 Fault Code ..................83 Flowchart A-12. 14, 15 or 16 Fault Code ................ 84 Flowchart A-13. 51 Fault Code ..................85 Flowchart A-14.
  • Page 10 TABLE OF CONTENTS, continued Title Page APPENDICES, continued APPENDIX B, continued Figure B-5. Duplex II Computer .................. 99 Figure B-6. Duplex II Computers J3 Connector Pinout..........100 Figure B-7. Duplex II Computers J9 and J10 Connector Pinout ....... 101 Figure B-8. Duplex II Computers J11 Connector Pinout ...........
  • Page 11 TABLE OF CONTENTS, continued Title Page APPENDICES, continued APPENDIX C DISPENSER INTERNAL WIRING DIAGRAMS ........... 133 Figure C-1. Duplex II Connector Pinouts for Non-Blenders ........135 Figure C-2. Duplex II Connector Pinouts for Fixed Ratio Blenders ......136 Figure C-3. Duplex II Connector Pinouts for Proportional Blenders ......
  • Page 12 Part No. 917543 Rev. A November 1992...

  • Page 13: Introduction

    Any information which is specific to a particular model of dispenser will be shown as specific in the text. Any service problems which cannot be solved should be referred to Wayne Technical Services or to the appropriate regional service manager.

  • Page 14: Figure 1-1. Proportional Blending Block Diagram

    Blend Product Nozzle Hose Outlet Where Mixing Actually Takes Place Blend Valve and Blend Motor Computer and Solenoid Drive Board HI Product Meter Lo Product Meter Pulsers Hi Product Flow Lo Product Flow Control Valves Control Valves HI Product Inlet LO Product Inlet LINE STYLE DEFINITIONS Electrical Connections...

  • Page 15: The Blending Process Proportional Blenders

    1.1. THE BLENDING PROCESS PROPORTIONAL BLENDERS (see Figure 1-1) Proportional blenders have two grades of fuel input to the dispenser. The dispenser can then use these grades to “produce” as many as five different grades output to the nozzle. Two of these are the input grades, the other three are a mix of the two input grades. These intermediate grades are produced by mixing the two input grades at some propor- tion.

  • Page 16: Figure 1-2. Fixed Ratio Blending Block Diagram

    HI Product Outlet LO Product Outlet Blend Product Outlet Blend Valve Computer Pulsers HI Product LO Product Diaphragm Valves Diaphragm Valves HI Product Meter Lo Product Meter HI Product Inlet LO Product Inlet LINE STYLE DEFINITIONS Electrical Connections Mechanical Drive Hydraulic Tubing FIGURE 1-2.

  • Page 17: General Operation

    2.2. UNIT PRICES/AUTHORIZATION Before any Wayne dispenser will reset two things must happen. First, the dispenser must have unit prices set in it. Second, an authorization must be received from some source. Both the unit prices and the authorization can be manually set at the dispenser, or set from a control system.

  • Page 18: Figure 2-1. Bezel And Function Switch Location

    Display PUSH TO START STOP WAYNE SUPER REGULAR UNLEADED Authorize To lower Stop Switch Keyswitch Ad-Panel (Optional) (Optional) pull down from top Typical Vista Bezel With Ad-Panel In Place Display PUSH TO START STOP WAYNE Wing Head Function Switch Wing Head...

  • Page 19: Manually Setting Unit Prices

    2.2. UNIT PRICES/AUTHORIZATION, continued • This exposes the function switch access door; unlock this door and slide it to the left. • The function switches which are located behind the door opened in the previous step are: the Authorize (Self-Serve/Attend) switch, the Totals pushbutton, the Position Select pushbutton, and the DCPT power switch (if the dispenser is equipped with DCPT’s).

  • Page 20: Table 2-1. Unit Price Switch Closure Definitions Proportional Blenders

    TABLE 2-1. UNIT PRICE SWITCH CLOSURE DEFINITIONS PROPORTIONAL BLENDERS POSITION SELECT POSITION SELECTED SINGLE POSITION SELECTED CASH/CREDIT SWITCH CLOSURE PRICE POSTING DISPENSERS TYPE DISPENSERS FirstClosure Unit price LO feedstock or Credit unit price LO feedstock or lowest ratio blend lowest ratio blend. Second Closure Unit price LO-MID blend Cash unit price LO feedstock or...

  • Page 21: Figure 2-2. Unit Price Display

    FIGURE 2-2. UNIT PRICE DISPLAY TABLE 2-3. UNIT PRICE SWITCH CLOSURE DEFINITIONS NON-BLENDERS POSITION SELECT POSITION SELECTED SINGLE POSITION SELECTED CASH/CREDIT SWITCH CLOSURE PRICE POSTING DISPENSERS TYPE DISPENSERS First Closure Unit price position “X” Credit unit price position “X” Second Closure Unit price position “Y”...

  • Page 22: Setting A Fueling Point

    2.2.2. Authorize Switch, continued • An optional Local Authorize keyswitch may be installed on the outside of the dispenser; this switch may be used as a one time authorize by moving it to the full service position and back to the self service position (operat- ing levers must be OFF;...

  • Page 23: Electronic Parts

    3. ELECTRONIC PARTS There are five types of electronic components which may be in the head of a Wayne dispenser. • Display Board • Lighted Cash/Credit Interface Board • Solenoid Drive Board • Computer Assembly • Intrinsic Safe Barrier The hydraulics cabinet contains one or more of the following electronic or electrical components.

  • Page 24: Solenoid Drive Board

    3.2. LIGHTED CASH/CREDIT INTERFACE BOARD (LIGHTED SELECT BUTTONS), continued This board contains a four position DIP switch which must be set correctly in order for the display to operate; the settings are as follows: Position 1 Open or off Position 2 Closed or on Position 3 Open or off...

  • Page 25: Figure 3-1. Duplex Ii Computer Connector Locations

    COMPUTER SOLENOID DRIVE BOARD CONNECTOR DESCRIPTIONS SOLENOID DRIVE BOARD J1 --Solenoid Drive Side-1 There is also a J1 Located on the computer; it is the data connector for both sides. J2 --Solenoid Drive Side-2 J7 --Blend Motor Connection Side-1 J8 --Blend Motor Connection Side-2 CONNECTOR DESCRIPTIONS COMPUTER J1 -- Data Loop Both Sides J3 -- AC Input...

  • Page 26: Fault Codes

    3.4. COMPUTER ASSEMBLY, continued The Duplex Computers are fused to protect them from overvoltages and shorts. There are three fuses on the computer: • F1 fuses the input to the 5 VDC regulator on the computer board. If this fuse opens the dispenser will look like it has been powered down.

  • Page 27: Intrinsic Safe Barrier Printed Circuit Board

    3.4.1. Fault Codes, continued Note: All fault codes will continue to be displayed until the problem which caused them is remedied. Error and Hydraulic codes are displayed every time the affected portion of the dispenser is started by removing the nozzle from the nozzle boot and pressing a start switch.

  • Page 28: Figure 3-2A Duplex Ii Fault Code Displey Format And Definitions

    MAIN SALE DISPLAY NNN = Sequence Number in the range of 000 - 999 NNN-S S = Side 1 or 2. This is the side on which the code was PF-CC.T detected. T = Fault Code Status: 1 = Error 3 = Service 2 = Hydraulic 4 = Disable CC = Fault Code number in the range of 00 - 99...

  • Page 29: Table 3-1. Definition Of Duplex Ii Computer Fault Codes

    TABLE 3-1. DEFINITION OF DUPLEX II COMPUTER FAULT CODES CODE STATUS DESCRIPTION Push to start open, or cash or credit switch(es) shorted. 1/3* Push button start; option disabled but switch detected. 1/2* Unit has overrun prepay/preset amount. ROM error. 1/2* Pulser error.

  • Page 30: Pulser Disc

    3.7. SUCTION PUMP MOTOR The pump motor used in Wayne suction pumps can be either a 1/3 or 3/4 horsepower motor. Either of these two motors can be operated on either 110 VAC or 220 VAC, depending on a switch setting. The voltage selection switch is located on the side of the motor, and is secured by a sheet metal screw.

  • Page 31: Figure 3-3. Non-Blending Photocoupler Internal Wiring

    PULSER SELECT LED A 0 VDC PUL A LED B PUL B Pulser Disc Photocoupler FIGURE 3-3. NON-BLENDING PHOTOCOUPLER INTERNAL WIRING November 1992 Part No. 917543 Rev. A...

  • Page 32: Figure 3-4. Blending Photocoupler Internal Wiring

    LED A Blend Pulser Select Pul B LO PUL A HI 5 VDC PUL A LO V-BK LO Product Photocoupler HI Product Photocoupler WIRE COLORS V --Violet Pul B HI LED B Y --Yellow BU-BK 5 VDC BU--Blue OR-BK BK--Black OR--Orange R --Red FIGURE 3-4.

  • Page 33: Mechanical Parts

    4. MECHANICAL PARTS 4.1. NOZZLE BOOT (WITH MICRO SWITCH) The nozzle boot contains a “flipper” which closes the handle switch when the nozzle is removed from the boot. This flipper is spring actuated so that when the nozzle is re- moved it springs to the ON position.

  • Page 34: Figure 4-1. Nozzle Boot Assembly With Mirco Switch

    FIGURE 4-1. NOZZLE BOOT ASSEMBLY WITH MICRO SWITCH Part No. 917543 Rev. A November 1992...

  • Page 35: Figure 4-2. Nozzle Boot Assembly With Tilt Switch

    FIGURE 4-2. NOZZLE BOOT ASSEMBLY WITH TILT SWITCH November 1992 Part No. 917543 Rev. A...
  • Page 36 Part No. 917543 Rev. A November 1992...

  • Page 37: Hydraulic Parts

    The following section describes the operation of those hydraulic parts in Wayne dispensers which perform some “act”. Simple flow tubes will not be discussed. There are three basic hydraulic parts (four in blending dispensers) in Wayne dispensers as fol- lows: •...

  • Page 38: Flow Control Valve

    In all Wayne dispensers using the 2-stage solenoid operated diaphragm valve the general order of operation is the same. At the outset of a sale the slow flow coil only is energized causing slow product flow to start.

  • Page 39: Figure 5-1A. Blending Flow Control Valve "Off" No Flow

    OUTLET Indicates High Pressure INLET LEGEND 1. Actuator 2. Passageway from inlet chamber to outer chamber 3. Orifice through valve plate to center chamber 4. Passageway to the actuator inlet from the center chamber 5. Actuator outlet 6. Relief valve 7.

  • Page 40: Figure 5-1B. Non-Blending Flow Control Valve "Off" No Flow

    OUTLET Indicates High Pressure INLET LEGEND 1. Actuator 2. Passageway from inlet chamber to outer chamber 3. Orifice through valve plate to center chamber 4. Passageway to the actuator inlet from the center chamber 5. Actuator outlet 6. Relief valve 7.

  • Page 41: Figure 5-2. Flow Control Valve With Cover And Center Chamber Removed

    OUTLET OUTLET PORT INLET Indicates Part of Casting LEGEND 2. Passageway from inlet chamber to outer chamber 4. Passageway to the actuator inlet from the center chamber A. Inlet chamber Note: Item numbers 2, 4 and letter A are discussed in the text. FIGURE 5-2.

  • Page 42: Flow Control Valve "Off" No Flow

    5.2.1. Flow Control Valve “Off” No Flow (see Figures 5-1 and 5-2) Flow control valve “off” or no flow occurs when the inlet to the valve is charged, but there is no flow required from the particular valve, as in the instance, where the submersible pump motor is running because another fueling point is being used.

  • Page 43: Figure 5-3A. Blending Flow Control Valve "On" Slow Flow

    OUTLET Indicates High Pressure INLET LEGEND 1. Actuator 2. Passageway from inlet chamber to outer chamber 3. Orifice through valve plate to center chamber 4. Passageway to the actuator inlet from the center chamber 5. Actuator outlet 6. Relief valve 7.

  • Page 44: Figure 5-3B. Non-Blending Flow Control Valve "On" Slow Flow

    OUTLET Indicates High Pressure INLET LEGEND 1. Actuator 2. Passageway from inlet chamber to outer chamber 3. Orifice through valve plate to center chamber 4. Passageway to the actuator inlet from the center chamber 5. Actuator outlet 6. Relief valve 7.

  • Page 45: Flow Control Valve "On" Full Flow

    5.2.3. Flow Control Valve “On” Full Flow (see Figure 5-4) Flow control valve “on” full flow occurs during the main portion of all sales. At this time, both the slow and fast actuator coils (omitted for clarity) are energized. This pulls both the slow (12) and fast (13) poppets rearward exposing a path to the outlet.

  • Page 46: Figure 5-4A. Blending Flow Control Valve "On" Full Flow

    OUTLET Indicates High Pressure INLET LEGEND 1. Actuator 2. Passageway from inlet chamber to outer chamber 3. Orifice through valve plate to center chamber 4. Passageway to the actuator inlet from the center chamber 5. Actuator outlet 6. Relief valve 7.

  • Page 47: Figure 5-4B. Non-Blending Flow Control Valve "On" Full Flow

    OUTLET Indicates High Pressure INLET LEGEND 1. Actuator 2. Passageway from inlet chamber to outer chamber 3. Orifice through valve plate to center chamber 4. Passageway to the actuator inlet from the center chamber 5. Actuator outlet 6. Relief valve 7.

  • Page 48: Figure 5-5A. Blending Flow Control Valve Holding Back Pressure

    OUTLET Indicates High Pressure INLET LEGEND 1. Actuator 2. Passageway from inlet chamber to outer chamber 3. Orifice through valve plate to center chamber 4. Passageway to the actuator inlet from the center chamber 5. Actuator outlet 6. Relief valve 7.

  • Page 49: Figure 5-5B. Non-Blending Flow Control Valve Holding Back Pressure

    OUTLET Indicates High Pressure INLET LEGEND 1. Actuator 2. Passageway from inlet chamber to outer chamber 3. Orifice through valve plate to center chamber 4. Passageway to the actuator inlet from the center chamber 5. Actuator outlet 6. Relief valve 7.

  • Page 50: Flow Control Valve Relieving Back Pressure

    5.2.5. Flow Control Valve Relieving Back Pressure (see Figure 5-6) In this instance as the pressure builds, it lifts the slow flow poppet off of its seat and passes through the port (4) into the center chamber. Once the pres- sure reached approximately 35 psi the relief valve (6) would open allowing product into the outer chamber, where it would flow through the port (2) into the inlet chamber, and from there back into the underground tank.

  • Page 51: Figure 5-6A. Blending Flow Control Valve Relieving Back Pressure

    OUTLET Indicates High Pressure INLET LEGEND 1. Actuator 2. Passageway from inlet chamber to outer chamber 3. Orifice through valve plate to center chamber 4. Passageway to the actuator inlet from the center chamber 5. Actuator outlet 6. Relief valve 7.

  • Page 52: Figure 5-6B. Non-Blending Flow Control Valve Relieving Back Pressure

    OUTLET Indicates High Pressure INLET LEGEND 1. Actuator 2. Passageway from inlet chamber to outer chamber 3. Orifice through valve plate to center chamber 4. Passageway to the actuator inlet from the center chamber 5. Actuator outlet 6. Relief valve 7.

  • Page 53: Figure 5-7. Meter Cutaway

    FIGURE 5-7. METER CUTAWAY November 1992 Part No. 917543 Rev. A...

  • Page 54: Figure 5-8. Meter Adjustment

    FIGURE 5-8. METER ADJUSTMENT Part No. 917543 Rev. A November 1992...

  • Page 55: Blend Valve

    5.5. COMPACT PUMPING UNIT The Wayne compact pumping unit is a rotary-type gear pump. These pumps are called “self-priming” because they will remove all air and vapor from the suction line without assistance from an outside source. Rotary pumps operate with extremely close clearances between the rotating member and the pump casing.

  • Page 56: Figure 5-9. Blend Valve

    Low Product High Product Outlet Shoe Low Product High Product Shoe Outlet Product Inlet Low Product Chamber High Product Chamber High Product Inlet Adjusting Lever FIGURE 5-9. BLEND VALVE Part No. 917543 Rev. A November 1992...

  • Page 57: Wayne Sump Assembly

    5.6. WAYNE SUMP ASSEMBLY When air enters a suction type pump, it is eliminated by the air separator inside the compact pumping unit and the sump assembly. In the pumping unit, gasoline vapors rise to the top and escape to the sump assembly. At the top of the sump assembly is an orifice connected to the nozzle boot via a copper tube.
  • Page 58 Part No. 917543 Rev. A November 1992...

  • Page 59: Troubleshooting Guide

    6. TROUBLESHOOTING GUIDE Many problems that appear to be the result of a defective computer are really caused by contami- nation of the computer memory. Prior to replacing the computer for a first occurrence of a particular problem, a RAM clear should be initiated and the computer retested. If the computer functions, it should not be replaced unless a second occurrence of the same problem results.

  • Page 60: Sale Display And Unit Price Displays Are Blank

    Failure Indication Probable Cause Corrective Action Sale display and unit 1. No power to Check control power circuit price displays are blank. computer. breaker. Check for AC between pins 1 and 2 of J3 connector. If not present check in J-box. If not present in J-box problem is in site wiring;...

  • Page 61: Unit Price Displaying 0.000

    Failure Indication Probable Cause Corrective Action Unit price displaying . 1. Control system unit Set correct unit price. Refer to the 0.000 price set at 0.000. control system operation manual. 2. Unit price not set at Set correct price using price jog dispenser.

  • Page 62: Unit Price Not Correctly Displayed

    Failure Indication Probable Cause Corrective Action Unit price not correctly 1. Loose or defective Re-seat or replace data cable. displayed. data cable. 2. Defective unit pice Replace unit price display board. display board. Computer resets but 1. Check fuse F1 on Replace as necessary.

  • Page 63: Fault Code 01

    Failure Indication Probable Cause Corrective Action Fault code 01*. Push to start switch open or cash/credit switch shorted. 1. Defective push to start Check the switch(es) and replace or cash/credit switch. the as necessary. 2. Defective switch Check all wiring from the suspect wiring.

  • Page 64: Fault Code 04

    Failure Indication Probable Cause Corrective Action Fault code 04*. ROM error. 1. Computer found Clear error. If problem reoccurs defective ROM chip replace computer. during self test. Fault codes 05 or 20. * Pulser jitter. 1. Cracked or broken disc. Replace pulser disc. 2.

  • Page 65: Fault Code 08

    Failure Indication Probable Cause Corrective Action Fault code 08*. Time out limit exceeded. The dispenser was turned on but no product was dispensed for more than the programmed time limit (see Programming for the Duplex II Computer—Service, part number 917479, Option 12). Operational error no corrective action. Fault codes 10 or 21.

  • Page 66: Fault Code 51

    Failure Indication Probable Cause Corrective Action Fault code 51*. Blend ratio error exceeded programmed limits. 1. Flow restricted on Observe the blend valve while one end grade. dispensing to determine which grade is restricted. As product is dispensed the valve will move towards either “HI OFF”...

  • Page 67: Component Replacement

    7. COMPONENT REPLACEMENT This section describes the procedures necessary to replace the major components in Wayne dispensers. 7.1. ELECTRONIC COMPONENT REPLACEMENT Caution: Before replacing any components, power should be removed from the system. Additionally, totals should be read and recorded in case of memory alteration.

  • Page 68: Computer Assembly Replacement

    7.1.1. Removing the Bezel From Vista Dispensers, continued 4. Pull the bottom portion of the bezel out toward you, then pull the bezel down clear of the drip edge. 5. Use the reverse procedure to install the bezel. 7.1.2. Computer Assembly Replacement (see Figure 7-1) Note: The computer assembly and displays contain circuitry which is sensitive to static discharge.

  • Page 69: Figure 7-1. Replacing The Duplex Ii Computer

    FIGURE 7-1. REPLACING THE DUPLEX II COMPUTER November 1992 Part No. 917543 Rev. A...

  • Page 70: Intrinsic Safe Barrier Pcb Replacement

    7.1.2. Computer Assembly Replacement, continued 12. Replace the DEM in its original position and turn the control power ON. 13. Program the dispenser as follows: a. Set the macro and all option programming. b. Set the unit prices (if stand-alone); or c.

  • Page 71: Figure 7-2. Replacing The Intrinsic Safe Barrier Board

    FIGURE 7-2. REPLACING THE INTRINSIC SAFE BARRIER BOARD November 1992 Part No. 917543 Rev. A...

  • Page 72: Figure 7-3. Replacing The Integrated Display Board

    FIGURE 7-3. REPLACING THE INTEGRATED DISPLAY BOARD Part No. 917543 Rev. A November 1992...

  • Page 73: Cash/Credit Interface Board Replacement

    7.1.5. Cash/Credit Interface Board Replacement (see Figure 7-4) 1. In order to access the cash/credit interface board remove the bezel from the dispenser and disengage the two quarter turn screws located above the display. This will allow the DEM to tilt out toward you allowing access to all internal electronic components in the dispenser.

  • Page 74: Figure 7-4. Replacing The Lighted Cash Credit Interface Board

    FIGURE 7-4. REPLACING THE LIGHTED CASH CREDIT INTERFACE BOARD Part No. 917543 Rev. A November 1992...

  • Page 75: Figure 7-5. Replacing The Solenoid Drive Board

    FIGURE 7-5. REPLACING THE SOLENOID DRIVE BOARD November 1992 Part No. 917543 Rev. A...

  • Page 76: Photocoupler/Pulser Disc Replacement

    7.1.7. Photocoupler/Pulser Disc Replacement Note: Pulser discs are fragile. Care should be taken when removing the pulser components. 1. Remove the hex head 1/4-20 screws and cover from the pulser assembly. 2. Disconnect the cable to the photocoupler. 3. Remove the screw holding the photocoupler to the housing and loosen the set screws holding the pulser disc on the shaft.

  • Page 77: Actuator Module Replacement (Modules With Incandesent Lamps)

    7.1.8. Nozzle Boot Switch Replacement, continued B. TILT SWITCH STYLE 1. Disconnect the 2-pin connector. 2. Remove the return spring from the switch assembly. 3. Push the end of shaft that protrudes through the nozzle boot until shaft is free and remove the switch assembly from the flipper and nozzle boot. 4.

  • Page 78: Actuator Module Replacement (Modules With High Intensity Leds)

    7.1.9. Actuator Module Replacement (Modules with Incandesent Lamps), continued 5. Install the new actuator module using the reverse procedure; reconnect the previously removed wiring harnesses making sure to place them in their original positions. 6. Test for proper operation. 7.1.10. Actuator Module Replacement (Modules with High Intensity LEDs) 1.

  • Page 79: Hydraulic Component Replacement

    7.1.12. Back Lit Display Lamp Replacement, continued 4. Remove the bracket containing the lamp holder and lamp. 5. Install the new fluorescent lamp and reinstall the bracket. 6. Secure the DEM back in its original position. 7. Reinstall the bezel. 7.2.

  • Page 80: Diaphragm Valve

    7.2.2. Diaphragm Valve Note: Before removing any parts from the diaphragm valve, trip the impact valve, and shut OFF the submersible pump for the product in question. 1. Remove the three (3) bolts which secure the diaphragm valve to the strainer casting.

  • Page 81: Meter

    7.2.4. Meter Note: Before removing the meter, trip the impact valve and shut OFF the submers- ible pump for the product in question. 1. Remove the four (4) bolts which secure the meter to the meter support. 2. Remove the meter. Note the position of the two (2) “O” rings so that they may be replaced in the proper location.
  • Page 82 Part No. 917543 Rev. A November 1992...

  • Page 83: Appendix A Troubleshooting Flowcharts

    APPENDIX A TROUBLESHOOTING FLOWCHARTS When troubleshooting problems related to fault codes generated by the duplex computer, it is necessary to correct the problem and cycle the control power to the computer or enter a 3 in option 99 in order to clear the message. Even if the problem is corrected the error message will continue to be displayed until the power is cycled, or option 99 is entered and changed to a 3.
  • Page 84 Part No. 917543 Rev. A November 1992...

  • Page 85: Flowchart A-1. 01 Fault Code

    01 fault code. Push to start switch open or cash/credit switch shorted. Defective switch. Check with VOM for continuity when switch is on. Does the Replace the switch check defective switch. good? Check the wiring to the switch. Repair or replace the defective wiring.

  • Page 86: Flowchart A-2. 02 Fault Code

    02 fault code. Pust to start option disabled but switch detected. Ensure that the two wires normally connected to the PTS switch are shorted. Replace the wiring which would attach to the PTS switch. Is the problem corrected? Replace the lighted cash credit interface board.

  • Page 87: Flowchart A-3. 03 Fault Code

    03 fault code unit has run over preset amount. Check for 110VAC from solenoid drive board holding valve(s) open. Is 110VAC Replace the present when it solenoid drive should not be? board. Check diaphragm for leaks or debris holding it open. Replace or clean as necessary.

  • Page 88: Flowchart A-4. 04 Fault Code

    04 fault code. ROM error. Computer found defective ROM chip during self test. Clear erroo. Does the error reoccur? Replace computer. FLOWCHART A-4. 04 FAULT CODE Part No. 917543 Rev. A November 1992...

  • Page 89: Flowchart A-5. 05 Or 20 Fault Code

    05 or 20 fault code. Pulse jitter error. Replace the solenoid drive board. Check pulser disc for cracks or blocked openings. Repair/replace as necessary. Is the problem corrected? Clean dust from photocoupler. Is there dust on If problem the photocoupler? reoccurs replace photocoupler.

  • Page 90: Flowchart A-6. 06 Fault Code

    06 fault code. Computer sensed a valve or relay on when it should not Check the solenoid drive board for 110VAC output to a valve or relay. Is 110VAC Replace computer. present? Replace solenoid drive board. Is the problem corrected? Replace computer.

  • Page 91: Flowchart A-7. 08 Fault Code

    08 fault code. Time out limit exceeded. Dispenser was turned on but no product was despensed for more than the programmed time limit. See Option 12 in the Duplex II programming manual. Operational error no corrective action. FLOWCHART A-7. 08 FAULT CODE November 1992 Part No.

  • Page 92: Flowchart A-8. 10 Or 21 Fault Code

    10 or 21 fault code. Reverse pulse error. Error Ensure that both occurs while submersible pumps Is the dispensing blend are operating at equal problem at proportional bypass pressures. corrected? blender? Correct as necessary. Check for leaking While flow control valves dispensing Is the on the opposite...

  • Page 93: Flowchart A-9. 11 Fault Code

    11 fault code. Corrupted option programming. Computer found scrambled data in option programming. Check all option programming and clear error by setting Option 99 to data 03. Does the error reoccur? Replace computer. FLOWCHART A-9. 11 FAULT CODE November 1992 Part No.

  • Page 94: Flowchart A-10. 12 Fault Code

    12 fault code. Corrupted totals data. Computer found the totals data to be corrupted and reset the data to zero. Check that sales are now being totaled correctll. Does the error reoccur? Replace computer. FLOWCHART A-10. 12 FAULT CODE Part No. 917543 Rev. A November 1992...

  • Page 95: Flowchart A-11. 13 Fault Code

    13 fault code. Corrupted unit price data. Computer found the unit price data to be corrupted and reset the data to zero. Re-enter unit pricess Does the error reoccur? Replace computer. FLOWCHART A-11. 13 FAULT CODE November 1992 Part No. 917543 Rev. A...

  • Page 96: Flowchart A-12. 14, 15 Or 16 Fault Code

    14, 15, or 16 fault code. Illegal pulse; a pulse was recieved from a grade not selected. Check diaphragm valve of unselected product Is the for leaks or debris problem holding it open. Clean corrected? or repair as necessarr. Check restricter valve Is dispenser a (on meter support of V390/U Single...

  • Page 97: Flowchart A-13. 51 Fault Code

    51 fault code. Blend ratio error exceeded Is the programmed problem limits. corrected? Option 52 should be set at 5%. Option 53 Check blend valve for should be set at leaks between 2 gallons. Reset chambers cracked as necessary. shoes. Repair/ replace as necessary.

  • Page 98: Flowchart A-14. Displays Are Blank

    Sale display and unit price displays are blank. Make sure control power circuit breaker is ON and power is present. Check F1 and F3 fuses on the computer. Replace if defective. Is there Is 110VAC 110VAC between present in Correct station wiring. pins 1 and 2 on the junction box J5 connector?

  • Page 99: Flowchart A-15. Displays Scrambled

    Display(s) scrambled or missing segments. Replace data cable. Is the problem corrected? Replace display board. Is the problem corrected? Replace the computer. FLOWCHART A-15. DISPLAYS SCRAMBLED November 1992 Part No. 917543 Rev. A...

  • Page 100: Flowchart A-16. Unit Will Not Respond To Individual Function Switch

    Sale display is on; unit will not respond to an individual function switch, i.e., the totals switch works but the price jog does not. Defective switch. Check with VOM for continuity when switch is on. Does the Replace the switch check defective switch.

  • Page 101: Flowchart A-17. Unit Will Not Respond To Any Function Switches

    Sale display on unit will not respond to any function switches. Defective switches check with VOM for continuity when switch is Do switches Replace the switches. check good? Blown fuse on Is the cash/credit problem interface board. corrected? Replace as necessary.

  • Page 102: Flowchart A-18. Unit Will Not Reset

    Displays are on but the unit will not reset. Defective Push-to-Start Is the switch or wiring. problem Correct as corrected? necessary. Blown fuse on, or defective, Is the cash/credit problem interface board. corrected? Correct as necessary. Defective handle switch or wiring to switch.

  • Page 103: Flowchart A-19. Unit Resets But Will Not Dispense

    Dispenser resets but will not dispense product. Check the F1 fuse Is the on the solenoid drive problem board. Replace if it is corrected? open. Check for 110VAC output from the solenoid drive board to the relay(s) and the solenoid valve(s).

  • Page 104: Flowchart A-20. Unit Prices Show 0.000

    Unit price showing 0.000. Ensure that the Is this dispensers in Is there the only question are not a control system fueling point with set to the same installed? 0.000 for unit fueling point prices? number. Manually set prices Are all Check the fueling in dispenser.

  • Page 105: Appendix B Electronic/Electrical Component Troubleshooting

    APPENDIX B. ELECTRONIC/ELECTRICAL COMPONENT TROUBLESHOOTING November 1992 Part No. 917543 Rev. A...
  • Page 106 Part No. 917543 Rev. A November 1992...

  • Page 107: Introduction

    INTRODUCTION This Appendix describes in detail the troubleshooting of the various electronic and electrical components used in Vista series blending and non-blending dispensers (see Figure B-1 for a typical Vista dispenser). All electronic components discussed in this section are located in the dispenser electronic head. The blend motor, one electrical component discussed here, is located in the dispenser junction box.
  • Page 108 Note: On new style Vista bezels (without phillips head screws shown below) the ad panel is lowered by simply pulling the ad panel out and down from the top of the ad panel holder. See also, Figure 2-1 in Section 2. FIGURE B-2.

  • Page 109: The Dispenser Electronic Module (Dem)

    B.3. THE DISPENSER ELECTRONIC MODULE (DEM) To move the DEM into the service position perform the steps shown in Figure B-3 and B-4. Once the DEM is tilted into the service position you will have access to all of the elec- tronic components in the dispenser.
  • Page 110 FIGURE B-4. THE DEM IN THE SERVICE POSITION Part No. 917543 Rev. A November 1992...

  • Page 111: Testing The Duplex Ii Computer

    B.4. TESTING THE DUPLEX II COMPUTER There are four functions of the Duplex II computer which can be readily field tested; these four functions are as follows: • AC output to the solenoid drive board • Output to the pulsers and handle switches •...
  • Page 112 FIGURE B-6. DUPLEX II COMPUTERS J3 CONNECTOR PINOUT Part No. 917543 Rev. A November 1992...
  • Page 113 FIGURE B-7. DUPLEX II COMPUTERS J9 AND J10 CONNECTOR PINOUT November 1992 Part No. 917543 Rev. A...
  • Page 114 FIGURE B-8. DUPLEX II COMPUTERS J11 CONNECTOR PINOUT Part No. 917543 Rev. A November 1992...
  • Page 115 FIGURE B-9. DUPLEX II COMPUTERS J6 CONNECTOR PINOUT November 1992 Part No. 917543 Rev. A...
  • Page 116 FIGURE B-10. DUPLEX II COMUTERS J1 CONNECTOR PINOUT Part No. 917543 Rev. A November 1992...

  • Page 117: The Ac Input To The Solenoid Drive Board

    B.4.1. The AC Input to the Solenoid Drive Board To test the AC input to the solenoid drive board perform the following steps: • Set your meter on AC at a voltage corresponding to the control power of the dispenser. •...

  • Page 118: Output To The Pulsers And Handle Switches

    B.4.2. Output to the Pulsers and Handle Switches The computer outputs +4.8 to 5.2 VDC to operate the pulsers and handle switches. To test this output perform the following steps: • Set your meter on the 20 VDC scale. • Place the common lead of your meter in pin 2 of either the J9 or J10 connector, place the positive lead in the pin controlling the function being tested (see Figure B-12).

  • Page 119: Power Output To The Displays

    B.4.3. Power Output to the Displays The data output from the computer to the displays cannot be readily field tested. The +4.8 to 5.2 VDC supplied to the displays from the computer, on the other hand, can be tested. To test the 5 volts to the displays perform the following steps: •...

  • Page 120: Testing The Output To The Annunciators

    B.4.4. Testing the Output to the Annunciators (see Figure B-14) The annunciators in Vista dispenser are driven by a +4.8 to 5.2 VDC signal originating on the Duplex II computer. To test the output to the annunciators perform the following steps: •...

  • Page 121: Testing The Power Output To The Preset Control Board

    B.4.5. Testing the Power Output to the Preset Control Board The computer provides the +4.8 to 5.2 VDC which is used to power the preset control board and the preset display. In order to test this output, perform the following steps: •...

  • Page 122: Testing The Input Power To The Computer

    B.4.6. Testing the Input Power to the Computer In order to test the input power to the Duplex II computer perorm the follow- ing steps: • Set your meter on AC at a voltage which corresponds to the control power of the dispenser.

  • Page 123: Testing The Fuses On The Duplex Ii Computer

    B.4.7. Testing the Fuses on the Duplex II Computer There are three pico fuses on the Duplex II computer; these look physically similar to a resistor, but are beige in color. The pico fuses are socketed and are field replacable. The functions of the fuses are as follows: •...

  • Page 124: Testing The Solenoid Drive Board

    B.5. TESTING THE SOLENOID DRIVE BOARD The solenoid drive board controls all of the AC switching in the dispenser; in addition the solenoid drive board switches the correct pulser ON at the proper time. Note: The following figures are shown for connector information only.
  • Page 125 FIGURE B-18B. 4 PRODUCT SOLENOID DRIVE BOARD November 1992 Part No. 917543 Rev. A...
  • Page 126 FIGURE B-18C. BLENDER SOLENOID DRIVE BOARD Part No. 917543 Rev. A November 1992...
  • Page 127 FIGURE B-19. SOLENOID DRIVE BOARD CONNECTOR J1 AND J2 PIN DEFINITIONS November 1992 Part No. 917543 Rev. A...
  • Page 128 FIGURE B-20A. 4 PRODUCT SOLENOID DRIVE BOARD J3 AND J4 CONNECTOR PIN DEFINITIONS Part No. 917543 Rev. A November 1992...
  • Page 129 FIGURE B-20B. BLENDER SOLENOID DRIVE BOARD J7 AND J8 CONNECTOR PIN DEFINITIONS November 1992 Part No. 917543 Rev. A...

  • Page 130: Testing The Ac Output From The Solenoid Drive Board

    B.5.1. Testing the AC Output from the Solenoid Drive Board To test the AC output from the solenoid drive board perform the following steps (see Figure B-21): • Connect the negative lead of your meter to a neutral or an earth ground (pin 2 in the computers J3 connector will work).

  • Page 131: Testing The Pulser Select Circuits

    B.5.2. Testing the Pulser Select Circuits In order to test the pulser select circuitry on the solenoid drive board perform the following steps: • Place the positive lead of your meter in either pin 4 or 7 of connector J9 or 10. Place the common lead of your meter on an earth ground (the frame of the dispenser).

  • Page 132: Testing The Output From The Photocoupler

    B.6. TESTING THE OUTPUT FROM THE PHOTOCOUPLER The photocoupler is located in an explosion proof housing in the hydraulic cabinet. In order to test the output from the photocoupler perform the following steps: • Set your meter on the 20 VDC scale. •...
  • Page 133 FIGURE B-24. MANUALLY TURNING THE PHOTOCOUPLER November 1992 Part No. 917543 Rev. A...

  • Page 134: Intrinsic Safe Barrier Board

    B.7. INTRINSIC SAFE BARRIER BOARD The intrinsic safe barrier is in the wiring with the handle switches; it uses zener diodes in order to eliminate the possibility of introducing over 5 VDC into the hydraulics cabinet. Figures B-25 through B-27 show the connectors on the intrinsic safe barrier, and their pinouts.
  • Page 135 FIGURE B-26. INTRINSIC SAFE BARRIER J2 AND J5 CONNECTOR PINOUTS November 1992 Part No. 917543 Rev. A...
  • Page 136 FIGURE B-27. INTRINSIC SAFE BARRIER J3 AND J6 CONNECTOR PINOUT Part No. 917543 Rev. A November 1992...

  • Page 137: Testing The Intrinsic Safe Barrier

    B.7.1. Testing the Intrinsic Safe Barrier In order to test the intrinsic safe barrier perform the following steps (see Figure B-28): • Remove the black cover which conceals the intrinsic safe barrier in the head of the dispenser. • Set your meter on DC voltage on the 20 volt scale. •...

  • Page 138: Lighted Cash Credit Interface Board

    B.8. LIGHTED CASH CREDIT INTERFACE BOARD The Lighted cash credit interface board senses all of the inputs from the dispenser func- tion switches, and the cash/credit and push to start switches. In addition it regulates the power to the lighted cash/credit and push to start buttons. Any problems with this board, therefore can cause any or all dispenser switches (with the exception of the handle switches) to be inoperable.
  • Page 139 FIGURE B-29. LIGHTED CASH CREDIT INTERFACE BOARD November 1992 Part No. 917543 Rev. A...
  • Page 140 FIGURE B-30. LIGHTED CASH CREDIT INTERFACE BOARD J3 CONNECTOR Part No. 917543 Rev. A November 1992...
  • Page 141 FIGURE B-31. LIGHTED CASH CREDIT INTERFACE BOARD J4 CONNECTOR November 1992 Part No. 917543 Rev. A...
  • Page 142 FIGURE B-32. LIGHTED CASH CREDIT INTERFACE BOARD J6 CONNECTOR Part No. 917543 Rev. A November 1992...

  • Page 143: Testing The Blend Motor

    B.9. TESTING THE BLEND MOTOR The blend motor, one for each side of the dispenser, is located in the dispenser junction box. Before testing or replacing the blend motor, all probable causes and corrective actions listed under Fault Code 51 in Section 6 Troubleshooting Guide should be consid- ered.
  • Page 144 Part No. 917543 Rev. A November 1992...

  • Page 145: Appendix C Dispenser Internal Wiring Diagrams

    APPENDIX C DISPENSER INTERNAL WIRING DIAGRAMS November 1992 Part No. 917543 Rev. A...
  • Page 146 Part No. 917543 Rev. A November 1992...
  • Page 147 SOLENOID DRIVE BOARD Pin 1-Fast Valve Nozzle AA Pin 2-Slow Valve Nozzle AA Pin 3-Relay Select Nozzle AA Pin 4-Pulser Select Nozzle AA Pin 1-Relay Select Nozzle X Pin 2-Fast Valve Nozzle X Pin 3-Slow Valve Nozzle X Pin 4-Relay Select Nozzle Y Pin 6-Fast Valve Nozzle Y Pin 7-Pulser Select Nozzle X Pin 9-Slow Valve Nozzle Y...
  • Page 148 Pin 1-Relay Select Low Product Pin 2-Fast Valve Low Product Pin 3-Slow Valve Low Product Pin 4-Relay Select High Product Pin 6-Fast Valve High Product Pin 7-Pulser Select Pin 9-Slow Valve High Product Pin 12-Fast Valve Blended Product Pin 15-Slow Valve Blended Product SOLENOID DRIVE BOARD Pin 1-Relay Select Low Product Pin 2-Fast Valve Low Product...
  • Page 149 Pin 1-Relay Select Low Product Pin 2-Fast Valve Low Product Pin 3-Slow Valve Low Product Pin 4-Relay Select High Product Pin 6-Fast Valve High Product Pin 7-Blend Pulser Select Pin 9-Slow Valve High Product Pin 12-Fast Valve Single Product Pin 13-Single Product Pulser Select Pin 14-Relay Select Single Product Pin 15-Slow Valve Single Product SOLENOID DRIVE BOARD...
  • Page 150 Part No. 917543 Rev. A November 1992...
  • Page 151 November 1992 Part No. 917543 Rev. A...
  • Page 152 Part No. 917543 Rev. A November 1992...
  • Page 153 November 1992 Part No. 917543 Rev. A...
  • Page 154 Part No. 917543 Rev. A November 1992...
  • Page 155 November 1992 Part No. 917543 Rev. A...
  • Page 156 Part No. 917543 Rev. A November 1992...
  • Page 157 November 1992 Part No. 917543 Rev. A...
  • Page 158 Part No. 917543 Rev. A November 1992...

  • Page 159: Appendix D Gilbarco Pulser Interface Pcb Troubleshooting

    APPENDIX D GILBARCO PULSER INTERFACE PCB TROUBLESHOOTING November 1992 Part No. 917543 Rev. A...
  • Page 160 Part No. 917543 Rev. A November 1992...
  • Page 161 The Pulser Interface PCB is located on side one (junction box side) of the dispenser in the DEM. Except for the PCB, the pulser and I.S. Barrier, all electronic troubleshooting procedures will be the same as for a Wayne Vista dispenser. Pulser Troubleshooting (Error Code XX-052): First measure the Pulser Power (see Figure D- 1) between Orange (+) and Gray (-) at point “B”...
  • Page 162 FLOWCHART D1. PULSER FAILURE: ERROR CODE XX-05.2 Part No. 917543 Rev. A November 1992...

  • Page 163: User's Response Sheet

    USER'S RESPONSE SHEET Service: Vista Blending and Non-blending Suction Pumps and Remote Dispensers Manual Title: 917543 Rev A Manual Revision: Date of This Letter: User's Name: Telephone: Company: Your Position: Street Address: City/State/Zip Code: How would you rate the quality of this manual: Excellent Good Fair...
  • Page 164 TAPE OR STAPLE TO SEAL FOLD WAYNE DIVISION DRESSER INDUSTRIES ATTN: TECHNICAL DOCUMENTATION 124 WEST COLLEGE AVENUE • P. O. BOX 1859 SALISBURY, MD 21802-1859 FOLD Part No. 917543 Rev. A November 1992...

  • Page 165: Warranty And Limitation Of Remedy And Liability

    (90) days from date of start-up. Wayne Vista dispenser external metal panels will be free from defects due to rust and/or corrosion for a period of forty-eight (48) months from date of dispenser start-up.) Defective and nonconforming items must be held for Seller’s inspection and returned to the...
  • Page 166 Wayne Division, Dresser Industries Inc., P.O. Box 1859, Salisbury, MD 21802-1859,(410) 546-6600 Part No. 917543 Rev. A 11/92 ©1992 Dresser Industries, Inc.

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