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Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0

Digital Outputs ......................................................................................................................................19-9

I/O Configuration ...................................................................................................................................19-10

Section 20 • Data Backup

Overview ...............................................................................................................................................20-1

Save / Load .............................................................................................................................................20-1

Migrate .................................................................................................................................................. 20-3

Factory Reset .........................................................................................................................................20-3

Setpoints Report ....................................................................................................................................20-4

Section 21 • Maintenance

Overview ...............................................................................................................................................21-1

Checklist ................................................................................................................................................21-1

Notes ..................................................................................................................................................21-2

Log ..................................................................................................................................................21-2

Chart ..................................................................................................................................................21-2

Section 22 • User Access

Overview ...............................................................................................................................................22-1

Apply ..................................................................................................................................................22-1

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

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

VNC Account .........................................................................................................................................22-4

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

Section 23 • Help Screen

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

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

Section 24 • Twin Screw Control

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

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

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

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

Twin Screw Oil Pressure .........................................................................................................................24-4

Oil Pressure Monitoring BEFORE Compressor Starts ...................................................................24-4

Low Oil Pressure Safety Bypass ...................................................................................................24-4

Oil Pressure Monitoring AFTER Compressor Starts .....................................................................24-5

Section 25 • Cool Compression Control

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

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

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

Operational Differences from Single Screw ............................................................................................25-4

Section 26 • Remote Oil Cooler

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

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

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

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

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