Manual 0-2470 45 CUSTOMER/OPERATOR SERVICE
5.02 REPLACING CONSUMABLE TORCH PARTS (continued)
4. Remove the electrode. The face of the electrode should not be
recessed more than 0.10 inch (2.5 mm). If it is worn beyond
this point it must be replaced.
5. Reinstall the parts and shield cup on the torch as shown.
Hand tighten the shield cup until it is seated on the torch
head. If resistance is felt when installing the cup, check the
threads before proceeding with installation.
5.03 GENERAL TORCH MAINTENANCE
Cleaning the Torch
WARNING
WARNING
CAUTION
Even if precautions are taken to use only clean air with a torch,
eventually the inside of the torch becomes coated with residue.
This buildup can affect the pilot arc initiation and the overall cut
quality of the torch.
Disconnect primary power to the system before disassembling
the torch, leads, or power supply.
DO NOT touch any internal torch parts while the AC indicator
light on the front panel of the power supply is lit.
The inside of the torch should be cleaned with electrical contact
cleaner using a cotton swab or soft wet rag. In severe cases, the
torch can be removed from the leads (see Servicing the Torch,
page 47) and cleaned more thoroughly by pouring electrical
contact cleaner into the torch and blowing it through with com-
pressed air.
Dry the torch thoroughly before reinstalling.
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