Specifications

3
ViSSion® 20/20 Retrofi t Instructions • 35391SCRF
Table of Contents
Sections Page
1.0 General Information ................................................................................................................ 3
2.0 Vission 20/20 Retrofi t Instructions .......................................................................................... 4
2.1 Removal ................................................................................................................................. 4
2.2 Installation .............................................................................................................................. 5
3.0 Field Wiring Instructions ......................................................................................................... 9
Table/Figures Page
Table 1. Torque Specifi cations .................................................................................................... 12
Figure 1. VSS Compressor Unit with Keypad Microprocessor ....................................................... 4
Figure 2. Block and Bleed Assembly .............................................................................................5
Figure 3. Vission 20/20 with Vibration Isolators .......................................................................... 6
Figure 4. Block and Bleed Assembly with Transducers .................................................................. 6
Figure 5. Compressor Unit RTD Locations .................................................................................... 7
Figure 6. Block and Bleed Assembly with Transducers and Cables ................................................ 8
Figure 7. RTD and Transducer Cable Routing ............................................................................... 8
Figure 8. Solenoid Cable Routing ................................................................................................. 9
Figure 9. MCC and Customer Control Center Interconnect Wiring ............................................... 10
Figure 10. Vission 20/20 Mircocontroller Diagram ......................................................................... 10
Figure 11. Vission 20/20 Terminal Blocks .......................................................................................11
1.0 General Information
This procedure defi nes the steps required to replace a Vilter Keypad Microcontroller with the Vission 20/20
Microcontroller.
It is highly recommended that the instructions be reviewed prior to retrofi tting.
Figures and tables are included to illustrate key concepts.
Safety precautions are shown throughout the manual. They are defi ned as the following:
WARNING - Warning statements are shown when there are hazardous situations, if not avoided, will result in serious
injury or death.
CAUTION - Caution statements are shown when there are potentially hazardous situations, if not avoided, will result
in damage to equipment.
NOTE - Notes are shown when there are additional information pertaining to the instructions explained.