PUREGAS INSTRUCTION MANUAL
MODEL P4200DCO3A AIR DRYER
TABLE OF CONTENTS
SECTION 1 – GENERAL................................................................................... 1
1.1 Scope of Manual .....................................................................................................1
1.2 Initial Inspection.....................................................................................................1
1.3 Warranty.................................................................................................................1
SECTION 2 – DESCRIPTION........................................................................... 2
SECTION 3 – PRINCIPLES OF OPERATION................................................ 3
3.1 Air System...............................................................................................................3
3.2 Air Compressor ......................................................................................................3
3.3 Heatless Dryer.........................................................................................................4
3.3.1 Tower #1....................................................................................................... 4
3.3.2 Tower #2....................................................................................................... 4
3.4 Humidity Sensing Tube..........................................................................................5
3.5 Capacity Control Valve..........................................................................................5
3.6 Pressure Switch and Storage Tank........................................................................5
3.7 Pressure Regulator and Shut-Off Valve ................................................................5
3.8 High/Low Pressure Switch.....................................................................................5
3.9 Alarm Summary.....................................................................................................5
3.9.1 High Pressure Alarm – HIGH PRESSURE..................................................... 5
3.9.2 Low Pressure Alarm – LOW PRESSURE ...................................................... 5
3.9.3 Air Compressor Maintenance Alarm - COMP. RUN TIME ALARM............. 5
3.9.4 Humidity Condition – HUMIDITY, -COND.-................................................ 6
3.9.5 Humidity Alarm – HUMIDITY ALARM....................................................... 6
3.10 Humidistat .............................................................................................................6
3.11 Desiccant................................................................................................................6
3.12 Logic Scan LED.....................................................................................................6
3.13 Alarm LED ............................................................................................................6
SECTION 4 – INSTALLATION AND START-UP........................................... 7
4.1 Inspection................................................................................................................7
4.2 Installation Procedure.............................................................................................7
4.3 Location ...................................................................................................................7
4.4 Electrical Hook-Up..................................................................................................7
4.5 Start-Up ...................................................................................................................8
SECTION 5 – TEST PROCEDURES................................................................. 9
5.1 Low Pressure Alarm Test........................................................................................9
5.2 High Pressure Alarm Test.......................................................................................9
5.3 Humidity Condition Test.........................................................................................9
5.4 Humidity Alarm Test ............................................................................................10
5.5 Compressor Performance Test.............................................................................. 11
SECTION 6 – MAINTENANCE .......................................................................12
6.1 Routine Maintenance ............................................................................................ 12
6.2 Maintenance Matrix..............................................................................................13
6.3 Recommended Spare Parts List............................................................................14
6.4 Air Compressor Safety Valves ..............................................................................15
