Manual
3
Automatic Damper.............................................................................................. 24
Controls and Indicators....................................................................................... 24
Loose Screws, Bolts and Fasteners ................................................................... 24
Lubrication.......................................................................................................... 24
Tests ...................................................................................................................... 25
OPTIONAL ACCESSORIES ......................................................................................... 26
Door Switch ............................................................................................................... 26
Recorder.................................................................................................................... 26
Redundant High-Limit................................................................................................ 26
Disconnect Switch ..................................................................................................... 27
Stacking Option ......................................................................................................... 27
Replacement ............................................................................................................. 28
Parts....................................................................................................................... 28
Nitrogen and Liquid Nitrogen..................................................................................... 28
Theory of Operation ............................................................................................... 28
Operator Training Requirements............................................................................ 29
Operation................................................................................................................... 29
Nitrogen Atmosphere................................................................................................. 31
Purge Rate............................................................................................................. 31
Maintain Rate......................................................................................................... 32
Troubleshooting......................................................................................................... 33
Circuit Board Check ............................................................................................... 35