Tweco 300 Auto-Cut - Manuel (Page 96)

TORCH MAINTENANCE 7-6 Manual 0-4817 Auto-Cut 300
7.05 Coolant Leak Trouble-Shooting
Never operate the system if coolant leaks from torch. A steady drip indicates that torch parts are damaged or
installed improperly. Operating the system in this condition can damage the torch head. Refer to the following
chart for guidance on coolant leakage from the torch head.
Amperage Plasma Gas Recommended Wear Depth
for Replacement
Inch mm
O2 0.04 1
Air 0.04 2
O2 0.04 1
Air 0.08 2
O2 0.04 1
Air 0.08 2
O2 0.04 1
H35 0.08 2
30
50
70
100
No
Yes
Yes
Are Parts New
or Used?
Are Parts fully
assembled into
the Torch?
Unsure?
Disassembly fully
and re-assemble
the Torch Properly.
See Installation Manual. Replace Torch Head
Is the Torch Damaged?
Replace Consumable
Cartridge and Shield Cup.
Torch still leaks?
Remove and Lubricate
all O-rings on Torch Head,
Consumables Cartridge,
and Consumables.
Re-assemble Torch.
Still leaks?
The parts probably are worn out.
See chart for approximate life expectancy.
The torch may be damaged. See page
to determine if head damage has occurred.
Order Coolant
Tube Replacement Kit
Leaking from
Coolant Supply or
Coolant Return?
Yes
Yes
Yes
No Return
Supply
Used
Order Coolant
Check Valve
Kit 9-4846
New
Torch leaks
Torch
Electrodes
Are Torch
Consumable Parts
Installed?
Art # A-04704_AB