02 Inspection And Replacement Of Consumable Torch Parts - ESAB A120 Operating Manual

CUTMASTER A120
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 deflector, ensure that the cap or deflector
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.
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 orifice).
Clean or replace the tip if necessary.
5T-2
Drag Shield Cap
This completes the parts replacement procedures.
SERVICE
Good Tip
Example of Tip Wear
5. Remove the starter cartridge. Check for exces-
sive wear, plugged gas holes, or discoloration.
Check the lower end fitting for free motion. Re-
place if necessary.
Spring-Loaded
Lower End Fitting
Full Compression
6. Pull the Electrode straight out of the Torch Head.
Check the face of the electrode for excessive
wear. Refer to the following figure.
New Electrode
Worn 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.
Worn Tip
A-03406
Spring-Loaded
Lower End Fitting at Reset /
Full Extension
Art # A-08064_AC
0-5430