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TABLE OF CONTENTS
General Information......................................................................................................3
Inspection ..........................................................................................................3
Safety Instructions .............................................................................................3
Disclaimer of Warranty.......................................................................................3
Installation Instructions .................................................................................................4
Start-Up and Operation.................................................................................................7
Design Conditions..............................................................................................7
Start-Up Procedure ............................................................................................7
Operating Range and Control Settings ..............................................................8
Digital Dry Guard™ (DDG) Controller Operation ...............................................9
Shutdown Procedure .........................................................................................10
Operating Conditions .........................................................................................10
Maintenance .................................................................................................................11
Air Dryer Maintenance .......................................................................................10
Automatic Drains................................................................................................10
Compressor .......................................................................................................13
Expansion Valve ................................................................................................13
Hot Gas Bypass Valve .......................................................................................13
Refrigerated Air Dryer Service Check List ....................................................................17
Troubleshooting............................................................................................................18