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Large Dehumidifying Dryers iv
Table of Contents
CHAPTER 1: SAFETY................................................................ 7
1-1 How to Use This Manual .............................................................................................7
Safety Symbols Used in this Manual.....................................................................7
1-2 Warnings and Precautions ..........................................................................................8
1-3 Responsibility ..............................................................................................................9
General Responsibility...........................................................................................9
Operator Responsibility .........................................................................................9
Maintenance Responsibility.................................................................................10
Reporting a Safety Defect ...................................................................................11
CHAPTER 2: FUNCTIONAL DESCRIPTION........................... 12
2-1 Models Covered in This Manual................................................................................12
2-2 General Description................................................................................................... 12
Specifying a Drying System ................................................................................12
What is Desiccant?..............................................................................................12
The Closed Loop Drying System.........................................................................12
The Process/Regeneration Cycle........................................................................13
Sequence of Operation .......................................................................................13
2-3 Standard Features..................................................................................................... 14
Auto Start Timer ..................................................................................................14
Mechanical Features ...........................................................................................14
Electrical Features...............................................................................................14
2-4 Options ......................................................................................................................15
Dewpoint Extend .................................................................................................15
Closed-Loop Regeneration .................................................................................15
2-5 Drawings and Diagrams ............................................................................................16
Process Aftercooler .............................................................................................18
Aftercooler Design Specifications........................................................................18
Process Air Dust Collector...................................................................................18
Material Overdrying Protection............................................................................20
Mechanical Options.............................................................................................21
Electrical Options ................................................................................................21
Controller Options ...............................................................................................21
2-6 Safety Devices and Interlocks ...................................................................................22
Dimensions and Specifications ......................................................................24
Mechanical Options ......................................................................................24
Electrical Features...............................................................................................25
Electrical Options ................................................................................................25
CHAPTER 3: MECHANICAL INSTALLATION ........................ 26
3-1 Uncrating the Equipment........................................................................................... 26
3-2 Rigging and Placing Unit ...........................................................................................26
3-3 Making Electrical Connections ..................................................................................26
3-4 Making Gas Line Connections (Gas-Fired Models Only) ..........................................27
3-5 Checking for Proper Blower Rotation ........................................................................28
3-6 Making Dryer/Drying Hopper Process Air Connections ............................................ 29