ESAB A120 - 02 Inspection and Replacement of Consumable Torch Parts

CUTMASTER A120
SERVICE 0-5430
5T-2
5T.02 Inspection and Replacement of
Consumable Torch Parts
WARNING
Disconnect primary power to the system
before disassembling the torch or torch
leads.
DO NOT touch any internal torch parts
while the AC indicator light of the Power
Supply is ON.
Remove the consumable torch parts as follows:
NOTE!
The shield cup holds the tip and starter
cartridge in place. Position the torch
with the shield cup facing upward to pre-
vent these parts from falling out when
the cup is removed.
1. Unscrew and remove the shield cup from the
torch.
NOTE!
Slag built up on the shield cup that can-
not be removed may effect the perfor-
mance of the system.
2. Inspect the cup for damage. Wipe it clean or
replace if damaged.
Art # A-08067
Shield Cups
3. On torches with a shield cup body and a shield
cap or deector, ensure that the cap or deector
is threaded snugly against the shield cup body.
In shielded drag cutting operations (only), there
may be an O-ring between the shield cup body
and drag shield cap. Do not lubricate the O-ring.
Drag Shield Cap
Shield
Cup Body
O-Ring No. 8-3488
Art # A-03878
4. Remove the tip. Check for excessive wear
(indicated by an elongated or oversized orice).
Clean or replace the tip if necessary.
Good Tip
Worn Tip
A-03406
Example of Tip Wear
5. Remove the starter cartridge. Check for exces-
sive wear, plugged gas holes, or discoloration.
Check the lower end tting for free motion. Re-
place if necessary.
Art # A-08064_AC
Spring-Loaded
Lower End Fitting
Full Compression
Spring-Loaded
Lower End Fitting at Reset /
Full Extension
6. Pull the Electrode straight out of the Torch Head.
Check the face of the electrode for excessive
wear. Refer to the following gure.
Worn Electrode
New Electrode
Art # A-03284
Electrode Wear
7. Reinstall the Electrode by pushing it straight into
the torch head until it clicks.
8. Reinstall the desired starter cartridge and tip into
the torch head.
9. 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.
This completes the parts replacement procedures.