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HT4400
Instruction Manual
TABLE OF CONTENTS
Start Circuit Troubleshooting ................................................................................................................5-30
Phase Loss Detection Board PCB21 - Status Indicators and Operation .....................................................5-31
Chopper Module Test Procedure .................................................................................................................5-32
Coolant Flow Test..........................................................................................................................................5-34
Pressure Switch Settings ..............................................................................................................................5-36
Gas Console Valve Select Switch Detail.......................................................................................................5-37
Preventative Maintenance.............................................................................................................................5-38
Section 6
Parts List ....................................................................................................................................6-1
Power Supply ..................................................................................................................................................6-2
Front Panel Outside................................................................................................................................6-2
Power Supply ..................................................................................................................................................6-3
Front Panel Inside ..................................................................................................................................6-3
Power Supply ..................................................................................................................................................6-4
Front Bail (Wall) ......................................................................................................................................6-4
Power Supply ..................................................................................................................................................6-5
Rear Bail (Wall) ......................................................................................................................................6-5
Power Supply ..................................................................................................................................................6-6
Rear Panel Inside and Outside...............................................................................................................6-6
Ignition Console ..............................................................................................................................................6-7
Gas Console ...................................................................................................................................................6-8
Cooler..............................................................................................................................................................6-9
HT4400 Torch................................................................................................................................................6-10
Consumable Configurations ..........................................................................................................................6-11
Consumable Parts Kit ...................................................................................................................................6-12
Counterclockwise Consumables ...................................................................................................................6-12
Valve Cluster Assembly ................................................................................................................................6-13
Recommended Spare Parts..........................................................................................................................6-13
Electrode Pit Depth Gauge Assembly ..........................................................................................................6-14
Section 7
Wiring Diagrams ........................................................................................................................7-1
Introduction .....................................................................................................................................................7-1
Wiring Diagram Symbols.................................................................................................................................7-1
Appendix A
System Grounding ................................................................................................................a-1
System Grounding Requirements ...................................................................................................................a-1
Suggested Ground Cable Routing ..................................................................................................................a-1
Power Supply .........................................................................................................................................a-1
Equipment Grounding.............................................................................................................................a-1
Work Table Grounding ............................................................................................................................a-2
Appendix B
Propylene Glycol & Benzotriazole Safety Data ..................................................................b-1
Appendix C
Gas Regulators ......................................................................................................................c-1
Appendix D
Noise Levels ..........................................................................................................................d-1
Appendix E
O2/N2 Cutcharts @ 140 PSI ..................................................................................................e-1
Appendix F
O2/N2 Cutcharts @ 120 PSI ....................................................................................................f-1
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