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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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