.................................................................................................................................................. 22-2

Manage Accounts .................................................................................................................................. 22-2

Figure 22-2. User Access Screen - Manage Accounts ............................................................................... 22-2

VNC Account ......................................................................................................................................... 22-3

Figure 22-3. User Access Screen - VNC Accounts ..................................................................................... 22-3

Screen Security Levels ............................................................................................................................ 22-4

Table 22-1. Security Access Levels .......................................................................................................... 22-4

Overview ............................................................................................................................................... 23-1

Screen Features ..................................................................................................................................... 23-1

Figure 23-1. Help Screen - Manual .......................................................................................................... 23-1

Figure 23-2. Help Screen - USB ............................................................................................................... 23-2

Figure 23-2. Version Pop-Up Screen ....................................................................................................... 23-2

Overview ............................................................................................................................................... 24-1

Setup - Configuration Screen ................................................................................................................. 24-1

Figure 24-1. Configuration Screen - Twin Screw Option .......................................................................... 24-1

Operation .............................................................................................................................................. 24-2

Slide Calibration - Capacity Slide Valve Potentiometer ............................................................................ 24-2

Figure 24-2. Slide Calibration - Twin Screw Control ................................................................................. 24-2

Figure 24-3. Slide Calibration - Twin Screw Bump Pop-Up Window ......................................................... 24-3

Overview ............................................................................................................................................... 25-1

Setup .................................................................................................................................................. 25-1

Figure 25-1. Cool Compression Control Screen....................................................................................... 25-1

Control Functions .................................................................................................................................. 25-2

Figure 25-2. Compressor Control Screen - Cool Compression Control (Page 4) ....................................... 25-2

Operational Differences from Single Screw ............................................................................................ 25-3

Overview ............................................................................................................................................... 26-1

Remote Oil Cooler Setpoint .................................................................................................................... 26-1

Figure 26-1. Remote Oil Cooler Screen (Page 1) ..................................................................................... 26-1

Step Control ........................................................................................................................................... 26-2

VFD Settings .......................................................................................................................................... 26-2

Figure 26-2. Remote Oil Cooler VFD Screen (Page 2) .............................................................................. 26-3

Vission 20/20 Troubleshooting Guide ..................................................................................................... A-1

TOC - 6

Table of Contents

Section 23 • Help Screen

Section 24 • Twin Screw Control

Section 25 • Cool Compression Control

Section 26 • Remote Oil Cooler

Appendix A • Vission 20/20 Troubleshooting Guide

Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 1.9

Section Number

Table of Contents