Wayne Vista Series Assembly instructions

SERVICE
Vista Blending
and Non-blending
Suction Pumps and
Remote Dispensers

Part No. 917543 Rev. A November 1992
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.
CAUTION
To prevent damage to moving parts located in the hydraulic cabinet, dispenser doors
should be in place during rainy and/or icy weather conditions. If ice has formed on compo-
nents such as the nozzle boot tilt-switch shaft and flipper assembly, the flipper may bind in
the OFF position. If this occurs the flipper should be gently actuated by hand until full
movement is achieved. Check all other moving parts e.g., totalizer/flex drive cable and
meter gear train for freedom of movement.

November 1992 Part No. 917543 Rev. A
Vista Blending Dispensers
and Non-blending
Suction Pumps and
Remote Dispensers
Service Manual

Part No. 917543 Rev. A November 1992

iii
November 1992 Part No. 917543 Rev. A
TABLE OF CONTENTS
Title Page
1. INTRODUCTION .................................................................................................................... 1
1.1. The Blending Process Proportional Blenders............................................................ 3
1.2. The Blending Process Fixed Ratio Blenders ............................................................. 3
2. GENERAL OPERATION ........................................................................................................ 5
2.1. Sequence of the Dispensing Cycle ............................................................................ 5
2.2. Unit Prices/Authorization .......................................................................................... 5
2.2.1. Manually Setting Unit Prices...................................................................... 7
2.2.2. Authorize Switch ........................................................................................ 7
2.2.3. Setting A Fueling Point............................................................................. 10
3. ELECTRONIC PARTS .......................................................................................................... 11
3.1. Display Boards ........................................................................................................ 11
3.2. Lighted Cash/Credit Interface Board....................................................................... 11
3.3. Solenoid Drive Board .............................................................................................. 12
3.4. Computer Assembly ................................................................................................ 12
3.4.1. Fault Codes ............................................................................................... 14
3.5. Intrinsic Safe Barrier Printed Circuit Board ............................................................ 15
3.6. Pulser Assembly ...................................................................................................... 15
3.6.1. Photocoupler............................................................................................. 15
3.6.2. Pulser Disc................................................................................................ 18
3.7. Suction Pump Motor................................................................................................ 18
3.8. Blend Motor............................................................................................................. 18
4. MECHANICAL PARTS ........................................................................................................ 21
4.1. Nozzle Boot (with Micro Switch) .......................................................................... 21
4.2. Nozzle Boot (with Tilt Switch)............................................................................... 21
5. HYDRAULIC PARTS ........................................................................................................... 25
5.1. Strainer and Filter .................................................................................................... 25
5.1.1. Strainer...................................................................................................... 25
5.1.2. Filter.......................................................................................................... 25
5.2. Flow Control Valve.................................................................................................. 26
5.2.1. Flow Control Valve “Off” No Flow.......................................................... 30
5.2.2. Flow Control Valve “On” Slow Flow....................................................... 30
5.2.3. Flow Control Valve “On” Full Flow......................................................... 33
5.2.4. Flow Control Valve Holding Back Pressure............................................. 33
5.2.5. Flow Control Valve Relieving Back Pressure .......................................... 38
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

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Part No. 917543 Rev. A November 1992
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 .................................................................................................... 49
Computer will not reset .......................................................................................................... 49
One or more digits or segments fail to operate....................................................................... 49
Unit price not correctly displayed .......................................................................................... 50
Computer resets but valves do not open................................................................................. 50
Computer resets but submersible pump does not come on .................................................... 50
Fault Code 01.......................................................................................................................... 51
Fault Code 02.......................................................................................................................... 51
Fault Code 03.......................................................................................................................... 51
Fault Code 04.......................................................................................................................... 52
Fault Code 05.......................................................................................................................... 52
Fault Code 06.......................................................................................................................... 52
Fault Code 08.......................................................................................................................... 53
Fault Code 10.......................................................................................................................... 53
Fault Code 11.......................................................................................................................... 53
Fault Code 12.......................................................................................................................... 53
Fault Code 13.......................................................................................................................... 53
Fault Code 14, 15, 16.............................................................................................................. 53
Fault Code 20.......................................................................................................................... 52
Fault Code 21.......................................................................................................................... 53
Fault Code 51.......................................................................................................................... 54
7. COMPONENT REPLACEMENT .......................................................................................... 55
7.1. Electronic Component Replacement ....................................................................... 55
7.1.1. Removing the Bezel From Vista Dispensers ............................................ 55
7.1.2. Computer Assembly Replacement............................................................ 56
7.1.3. Intrinsic Safe Barrier PCB Replacement .................................................. 58
7.1.4. Display Board Replacement ..................................................................... 58
7.1.5. Cash/Credit Interface Board Replacement ............................................... 61
7.1.6. Solenoid Drive Board Replacement ......................................................... 61
7.1.7. Photocoupler/Pulser Disc Replacement.................................................... 64
7.1.8. Nozzle Boot Switch Replacement ............................................................ 64
7.1.9. Actuator Module Replacement (Modules with Incandesent Lamps) ....... 65
7.1.10. Actuator Module Replacement (Modules with High Intensity LEDs)..... 66
7.1.11. Lighted Button Lamp Replacement.......................................................... 66
7.1.12. Back Lit Display Lamp Replacement....................................................... 66

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November 1992 Part No. 917543 Rev. A
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 ........................................................ 71
APPENDIX B ELECTRONIC/ELECTRICAL COMPONENT TROUBLESHOOTING ....... 93
APPENDIX C DISPENSER INTERNAL WIRING DIAGRAMS......................................... 133
APPENDIX D GILBARCO PULSER INTERFACE PCB TROUBLESHOOTING.............. 147
USER’S RESPONSE SHEET .................................................................................................... 151
WARRANTYAND LIMITATION OF REMEDYAND LIABILITY .............. Inside Back Cover
FCC WARNING............................................................................................................ Back Cover
LIST OF FIGURES
Figure 1-1. Proportional Blending Block Diagram ................................................................... 2
Figure 1-2. Fixed Ratio Blending Block Diagram .................................................................... 4
Figure 2-1. Bezel and Function Switch Location...................................................................... 6
Figure 2-2. Unit Price Display .................................................................................................. 9
Figure 3-1. Duplex II Computer Connector Locations ........................................................... 13
Figure 3-2A Duplex II Fault Code Displey Format and Definitions ........................................ 16
Figure 3-2B. Duplex II Fault Code Displey Example ............................................................... 16
Figure 3-3. Non-blending Photocoupler Internal Wiring ........................................................ 19
Figure 3-4. Blending Photocoupler Internal Wiring................................................................ 20
Figure 4-1. Nozzle Boot Assembly with Mirco Switch .......................................................... 22
Figure 4-2. Nozzle Boot Assembly with Tilt Switch............................................................... 23
Figure 5-1A. Blending Flow Control Valve “Off” No Flow...................................................... 27
Figure 5-1B. Non-blending Flow Control Valve “Off” No Flow .............................................. 28
Figure 5-2. Flow Control Valve With Cover and Center Chamber Removed......................... 29

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Part No. 917543 Rev. A November 1992
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. Non-blending Flow Control Valve “On” Full Flow ............................................. 35
Figure 5-5A. Blending Flow Control Valve Holding Back Pressure ......................................... 36
Figure 5-5B. Non-blending Flow Control Valve Holding Back Pressure.................................. 37
Figure 5-6A. Blending Flow Control Valve Relieving Back Pressure....................................... 39
Figure 5-6B. Non-blending Flow Control Valve Relieving Back Pressure ............................... 40
Figure 5-7. Meter Cutaway ..................................................................................................... 41
Figure 5-8. Meter Adjustment ................................................................................................. 42
Figure 5-9. Blend Valve........................................................................................................... 44
Figure 7-1. Replacing the Duplex II Computer....................................................................... 57
Figure 7-2. Replacing the Intrinsic Safe Barrier Board........................................................... 59
Figure 7-3. Replacing the Integrated Display Board............................................................... 60
Figure 7-4. Replacing the Lighted Cash Credit Interface Board............................................. 62
Figure 7-5. Replacing the Solenoid Drive Board .................................................................... 63
LIST OF TABLES
Table 2-1. Unit Price Switch Closure Definitions Proportional Blenders .................................. 8
Table 2-2. Unit Price Switch Closure Definitions Fixed Ratio Blenders ................................... 8
Table 2-3. Unit Price Switch Closure Definitions Non-blenders................................................ 9
Table 3-1. Definition of Duplex II Computer Fault Codes....................................................... 17
APPENDICES
APPENDIX A TROUBLESHOOTING FLOWCHARTS .......................................................... 71
Flowchart A-1. 01 Fault Code ....................................................................................... 73
Flowchart A-2. 02 Fault Code ....................................................................................... 74
Flowchart A-3. 03 Fault Code ....................................................................................... 75
Flowchart A-4. 04 Fault code........................................................................................ 76
Flowchart A-5. 05 or 20 Fault Code.............................................................................. 77
Flowchart A-6. 06 Fault Code ....................................................................................... 78
Flowchart A-7. 08 Fault Code ....................................................................................... 79
Flowchart A-8. 10 or 21 Fault Code.............................................................................. 80
Flowchart A-9. 11 Fault Code ....................................................................................... 81

vii
November 1992 Part No. 917543 Rev. A
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. Displays Are Blank .............................................................................. 86
Flowchart A-15. Displays Scrambled.............................................................................. 87
Flowchart A-16. Unit Will Not Respond To Individual Function Switch....................... 88
Flowchart A-17. Unit Will Not Respond To Any Function Switches ............................. 89
Flowchart A-18. Unit Will Not Reset.............................................................................. 90
Flowchart A-19. Unit Resets But Will Not Dispense...................................................... 91
Flowchart A-20. Unit Prices Show 0.000........................................................................ 92
APPENDIX B ELECTRONIC/ELECTRICAL COMPONENT TROUBLESHOOTING.......... 93
B.1. Introduction ............................................................................................................. 95
B.2. Removing the Bezel from the Dispenser................................................................. 95
B.3. The Dispenser Electronic Module (DEM)............................................................... 97
B.4. Testing the Duplex II Computer .............................................................................. 99
B.4.1. The AC Input to the Solenoid Drive Board ............................................ 105
B.4.2. Output to the Pulsers and Handle Switches............................................ 106
B.4.3. Power Output to the Displays................................................................. 107
B.4.4. Testing the Output to the Annunciators .................................................. 108
B.4.5. Testing the Power Output to the Preset Control Board .......................... 109
B.4.6. Testing the Input Power to the Computer ............................................... 110
B.4.7. Testing the Fuses on the Duplex II Computer ........................................ 111
B.5. Testing the Solenoid Drive Board ......................................................................... 112
B.5.1. Testing the AC Output from the Solenoid Drive Board ......................... 118
B.5.2. Testing the Pulser Select Circuits ........................................................... 119
B.6. Testing the Output from the Photocoupler ............................................................ 120
B.7. Intrinsic Safe Barrier Board................................................................................... 122
B.7.1. Testing the Intrinsic Safe Barrier............................................................ 125
B.8. Lighted Cash Credit Interface Board..................................................................... 126
B.9. Testing the Blend Motor ........................................................................................ 131
Figure B-1. Typical Vista Dispenser ............................................................................ 95
Figure B-2. Removing the Bezel from Vista Dispensers ............................................. 96
Figure B-3. DEM Removal.......................................................................................... 97
Figure B-4. The DEM in the Service Position ............................................................. 98

viii
Part No. 917543 Rev. A November 1992
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........................................... 102
Figure B-9. Duplex II Computers J6 Connector Pinout............................................. 103
Figure B-10. Duplex II Comuters J1 Connector Pinout............................................... 104
Figure B-11. Testing the AC Output to the Solenoid Drive Board .............................. 105
Figure B-12. Testing the Output to the Pulsers and Handle Switches ......................... 106
Figure B-13. Testing the Output to the Displays ......................................................... 107
Figure B-14. Testing the Output to the Annunciator.................................................... 108
Figure B-15. Testing the Power Output to the Preset Control Board .......................... 109
Figure B-16. Testing the AC Input to the Computer.................................................... 110
Figure B-17. Testing the Pico Fuses on the Duplex II Computer ................................ 111
Figure B-18A. 3 Product Solenoid Drive Board............................................................. 112
Figure B-18B. 4 Product Solenoid Drive Board............................................................. 113
Figure B-18C. Blender Solenoid Drive Board ............................................................... 114
Figure B-19. Solenoid Drive Board Connector J1 and J2 Pin Definitions .................. 115
Figure B-20A. 4 product Solenoid Drive Board J3 and J4 Connector Pin Definitions .. 116
Figure B-20B. Blender Solenoid Drive Board J7 and J8 Connector Pin Definitions..... 117
Figure B-21. Testing the AC Output From the Solenoid Drive Board ........................ 118
Figure B-22. Testing the Pulser Select Circuit............................................................. 119
Figure B-23. Testing the Output from the Photocoupler ............................................. 120
Figure B-24. Manually Turning the Photocoupler ....................................................... 121
Figure B-25. Intrinsic Safe Barrier J1 and J4 Connector Pinout ................................. 122
Figure B-26. Intrinsic Safe Barrier J2 and J5 Connector Pinouts................................ 123
Figure B-27. Intrinsic Safe Barrier J3 and J6 Connector Pinout ................................. 124
Figure B-28. Testing the Intrinsic Safe Barrier Board ................................................. 125
Figure B-29. Lighted Cash Credit Interface Board...................................................... 127
Figure B-30. Lighted Cash Credit Interface Board J3 Connector................................ 128
Figure B-31. Lighted Cash Credit Interface Board J4 Connector................................ 129
Figure B-32. Lighted Cash Credit Interface Board J6 Connector................................ 130
Figure B-33. Testing the Blend Motor ......................................................................... 131

ix
November 1992 Part No. 917543 Rev. A
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 ........................ 137
1-6560-D Internal Wiring Diagram - /V390D ........................................................ 138
3-6560-D Internal Wiring Diagram - /V399D ........................................................ 139
5-6560-D Internal Wiring Diagram - /V490D ........................................................ 140
7-6560-D Internal Wiring Diagram - /V590D ........................................................ 141
9-6560-D Internal Wiring Diagram - /V387D ........................................................ 142
11-6560-D Internal Wiring Diagram - /V390P ......................................................... 143
12-6560-D Internal Wiring Diagram - /V585D ........................................................ 144
13-6560-D Internal Wiring Diagram - /V395D ........................................................ 145
19-6560-D Internal Wiring Diagram - /V390D/U Single Hose MGD...................... 146
APPENDIX D GILBARCO PULSER INTERFACE PCB TROUBLESHOOTING ............... 147
PCB, Pulser and I.S. Barrier Troubleshooting................................................................ 149
Figure D-1. Pulser Interface PCB Wiring Diagram ................................................ 149
Flowchart D-1. Pulser Failure: Error Code XX-05.2.................................................... 150

x
Part No. 917543 Rev. A November 1992

1
November 1992 Part No. 917543 Rev. A
1. INTRODUCTION
This manual describes the service of Wayne Vista series blending dispensers and non-blending
suction pumps and dispensers. These dispensers can be identified by their model which begins
with “V”. The basic troubleshooting methods and service theory will remain the same for all
models of dispensers which satisfy the above definition. 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.
Wayne Technical Services 1-800-926-3737
Austin, TX 24 hours/7 days
Eastern Regional 410-546-6750
Service Office 8:30AM-5:00 PM E.S.T.
Salisbury, MD
Southeastern Regional 404-955-7982
Service Office 8:30AM-5:00PM E.S.T.
Atlanta, GA
Central Regional 312-693-7400
Service Office 8:30AM-5:00PM C.S.T.
Chicago, IL
Southcentral Regional 713-270-9996
Service Office 8:30AM-5:00PM C.S.T.
Houston, TX
Western Regional 714-952-1137
Service Office 8:30AM-5:00PM P.S.T.
Cypress, CA
INTERNATIONAL OFFICES
Carribean and Latin-America (Voice) 410-546-6757
Service Office (FAX) 410-546-6882
Salisbury, MD (TELEX) 684-9127
Mid-East and Europe (Voice) 734-866676
Service Office (FAX) 734-312492
United Kingdom
Far-East Service Office (Voice) 734-4431
Singapore (FAX) 737-0219

2
Part No. 917543 Rev. A November 1992
FIGURE 1-1. PROPORTIONAL BLENDING BLOCK DIAGRAM
Computer and
Solenoid Drive
Board
Blend Valve and
Blend Motor
Pulsers
HI Product Meter
Lo Product Meter
LO Product InletHI Product Inlet
Electrical Connections
Mechanical Drive
Hydraulic Tubing
LINE STYLE DEFINITIONS
Blend Product Nozzle
JDB-FH-188-A
Hose Outlet
Where Mixing Actually
Takes Place
Lo Product Flow
Control Valves
Hi Product Flow
Control Valves

3
November 1992 Part No. 917543 Rev. A
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. The proportion which is used will determine the octane rating of the intermediate
grade.
There are two separate sets of hydraulics inside the proportional blender. One of these
sets is used to control flow of the low octane input (also called the LO feedstock), and the
other is used to control the high octane input (also called the HI feedstock). The heart of
the hydraulics in proportional blending dispensers is the blend valve. The HI and LO
feedstocks are each input to separate chambers in the blend valve; the blend valve is
designed in such a way that the outputs from these chambers can be controlled. By
manipulating the valve the flow from one chamber can be restricted while the flow from
the other is increased, changing the ratio of one product to the other. The hydraulics
continue to be separate until the two products are mixed at the hose outlet.
The computer continually senses the flow rate of each end grade and adjusts the blend
valve in order to maintain the correct blend ratio. If for some reason the correct blend
ratio cannot be obtained the computer will shut the sale down and generate an fault code.
1.2. THE BLENDING PROCESS FIXED RATIO BLENDERS
Fixed ratio blenders differ from proportional blenders in that only one blended product is
available. This blended product is dispensed from the blended product hose (see Figure
1-2). The feedstocks are dispensed from separate hoses.
Because the blend ratio output from the blend hose cannot be changed from one sale to
the next, the mixing of the end grades can take place immediately after the blend valve.

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Part No. 917543 Rev. A November 1992
FIGURE 1-2. FIXED RATIO BLENDING BLOCK DIAGRAM
Computer
Blend Valve
Pulsers
HI Product Meter
Lo Product Meter
HI Product
Diaphragm Valves
LO Product
Diaphragm Valves
LO Product InletHI Product Inlet
Electrical Connections
Mechanical Drive
Hydraulic Tubing
LINE STYLE DEFINITIONS
HI Product Outlet Blend Product Outlet LO Product Outlet
JDB-FH-114-A

5
November 1992 Part No. 917543 Rev. A
2. GENERAL OPERATION
The general operation is very similar for all dispensers with model numbers beginning with V.
2.1. SEQUENCE OF THE DISPENSING CYCLE
• When the nozzle is removed from the nozzle boot, the constant +5 VDC which the
computer sends to the handle switch goes to ground. At this point one of the lighted
buttons (grade select, cash/credit, or push-to-start depending on the model) will flash
indicating that one of the buttons must be pressed.
• When one of the lighted buttons is pressed the constant +5 VDC which is supplied to
the switch goes to ground; signalling the computer to begin its reset cycle.
• If the dispenser has received an Authorization signal either from a control system or
from the Authorize switch in the dispenser, the correct submersible pump relay will
be energized at this time.
• The computer performs a self test and flashes eights, blanks, then resets to zeros, on
the main sale display.
• The slow valve coil is energized two to six seconds, depending on option program-
ming settings, after the submersible pump relay is energized.
• After a small amount of fuel has been dispensed, the fast valve coil is switched on.
Both coils are now energized together.
• In preset sales the fast coil is de-energized just prior to the final shut-off amount. The
slow valve coil is then de-energized when the final amount is reached.
• When the nozzle is replaced in the nozzle boot the handle switch signal goes back to
+5 VDC, and the sale is complete.
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. The function switches must be accessed in order to manually set
unit prices, set the authorize switch, or set the fueling point (see Figure 2-1). In order to
access the function switches complete the following steps:
• Lower the ad panel holder frame by pulling the holder frame out and down from the
top.

6
Part No. 917543 Rev. A November 1992
FIGURE 2-1. BEZEL AND FUNCTION SWITCH LOCATION
WAYNE PUSH TO START
REGULAR UNLEADED
Display
Typical Vista Bezel With Ad-Panel In Place
WAYNE PUSH TO START
Function Switch
Access Door
(Closed) Lock
Display
Wing Head
Thumbscrew
or Bezel Lock
Authorize
Switch Totals
PushbuttonPosition Select Pushbutton Price Jog
Pushbutton DCPT Power
(Optional)
Attend
Self-Serve
ON
OFF
Typical Vista Bezel With Ad-Panel Hinged Down
Function Switches, With Access Door Open
STOP
Authorize
Keyswitch
(Optional) Stop Switch
(Optional)
STOP
JDB-FH-209SM1
Fastener
Clip
Fastener
Clip
To lower
Ad-Panel
pull down
from top
Wing Head
Thumbscrew
or Bezel Lock
SUPER

7
November 1992 Part No. 917543 Rev. A
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).
2.2.1. Manually Setting Unit Prices
The following procedures need not be used if the dispenser is connected to a
control system. Refer to the operating procedures provided with the control
system for a complete description of unit price setting.
The operating levers must be OFF to set unit prices.
The Position Select pushbutton selects the position for which the unit price is to be
changed. The Price Jog pushbutton changes the price of the position selected.
See also, Tables 2-1, 2-2 and 2-3 for blenders and non-blenders.
The first closure of the Position Select pushbutton selects position “X” unit
price (credit price of Cash/Credit type dispenser) and will blank the Unit Price
displays for the position “Y”, “Z”, and “AA”. The unit price for position “X”
is set as follows:
The first closure of the Price Jog pushbutton causes the least significant digit or
tenths of cents position of the unit price to cycle (see Figure 2-2). The digit will
cycle 0 through 9 until the switch is released. Each successive closure of the Price
Jog pushbutton will select and increment the next most significant digit.
Subsequent Position Select switch closures are defined in Table 2-1, 2-2 and
2-3. The unit price for each position may then be set as described above.
2.2.2. Authorize Switch
The Authorize switch permits dispenser operation with or without console
control. In the self service position (toggle the switch down), the dispenser
must be authorized by the control system before each use. In the full service
position (toggle the switch up as shown in Figure 2-1), the dispenser may be
operated repeatedly without authorization from a control system.
• There is an Authorize switch for each fueling point.

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Part No. 917543 Rev. A November 1992
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
position. lowest ratio blend.
ThirdClosure Unit price MID blend position. Credit unit price LO-MID
blend position.
Fourth Closure Unit price HI-MID blend Cash unit price LO-MID
position. blend position.
FifthClosure Unit price HI feedstock or highest Credit unit price MID blend
ratio blend or single product. position.
SixthClosure Original sale display returns. Cash unit price MID blend
position.
Seventh Closure Credit unit price HI-MID
blend position.
Eighth Closure Cash unit price HI-MID
blend position.
NinthClosure Credit unit price HI feedstock or
highest ratio blend orsingle product.
TenthClosure Cash unit price HI feedstock or
highest ratio blend orsingle product.
Eleventh Closure Original sale display returns.
TABLE 2-2. UNIT PRICE SWITCH CLOSURE DEFINITIONS FIXED RATIO BLENDERS
POSITION SELECT POSITION SELECTED SINGLE POSITION SELECTED CASH/CREDIT
SWITCH CLOSURE PRICE POSTING DISPENSERS TYPE DISPENSERS
First Closure Unit price LO feedstock. Credit unit price LO feedstock.
Second Closure Unit price blend position. Cash unit price LO feedstock.
Third Closure Unit price high feedstock. Credit unit price blend position.
Fourth Closure Original sale display returns. Cash unit price blend position.
Fifth Closure Credit unit price HI feedstock.
Sixth Closure Cash unit price HI feedstock.
Seventh Closure Original sale display returns.