8
Duramax Hyamp Long Handheld Torches Service Manual 808290
Contents
2
Torch Setup .................................................................................................................................. 19
Consumable life ............................................................................................................................................................................ 19
Long handheld torch components ............................................................................................................................................ 20
Duramax Hyamp 45° long handheld torch ...................................................................................................................... 20
Duramax Hyamp 90° long handheld torch ...................................................................................................................... 20
Choose the hand torch consumables ...................................................................................................................................... 20
Drag-cutting 105/125 A consumables ........................................................................................................................... 21
Drag-cutting 45 A and 65 A consumables .................................................................................................................... 21
Gouging consumables ........................................................................................................................................................ 21
FineCut consumables .......................................................................................................................................................... 21
Install the hand torch consumables .......................................................................................................................................... 22
Connecting the torch lead .......................................................................................................................................................... 23
3
Operation ...................................................................................................................................... 25
Using the hand torch ................................................................................................................................................................... 25
Operate the safety trigger .......................................................................................................................................................... 26
Hand torch cutting guidelines ................................................................................................................................................... 27
Start a cut from the edge of the workpiece ............................................................................................................................ 28
Pierce a workpiece ....................................................................................................................................................................... 29
Gouge a workpiece ...................................................................................................................................................................... 31
Gouge profile ......................................................................................................................................................................... 32
Varying the gouge profile .................................................................................................................................................... 33
125 A gouging profile chart ............................................................................................................................................... 33
Common hand-cutting faults ..................................................................................................................................................... 35
4
Component Replacement ........................................................................................................ 37
Duramax Hyamp 45° long handheld torch components ..................................................................................................... 38
Duramax Hyamp 90° long handheld torch components ..................................................................................................... 39
Disconnect the power, gas supply, and torch ....................................................................................................................... 40
Replace the handle ...................................................................................................................................................................... 41
Replace the front shell ................................................................................................................................................................. 47
Replace the trigger assembly .................................................................................................................................................... 52
Replace the start switch ............................................................................................................................................................. 54
Replace the torch body ............................................................................................................................................................... 58
Replace the pilot arc wire ........................................................................................................................................................... 65
Replace the cap-sensor switch ................................................................................................................................................. 69
Replace the extension tube ........................................................................................................................................................ 72
Replace the torch lead ................................................................................................................................................................ 73
Replace the quick disconnect housing ................................................................................................................................... 79
