Tweco 35A CutSkill - Manual (Page 31)

cutskill 35A
Manual 0-5104 5T-1 SERVICE
SECTION 5 TORCH:
SERVICE
5T.01 General Maintenance
NOTE
Refer to Previous "Section 5 System" for
common and fault indicator descriptions.
Cleaning Torch
Even if precautions are taken to use only clean air
with a torch, eventually the inside of the torch be-
comes coated with residue. This buildup can affect
the arc initiation and the overall cut quality of the
torch.
!
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.
The inside of the torch should be cleaned with electri-
cal contact cleaner using a cotton swab or soft wet
rag. In severe cases, the torch can be removed from
the leads and cleaned more thoroughly by pouring
electrical contact cleaner into the torch and blowing
it through with compressed air.
CAUTION
Dry the torch thoroughly before reinstall-
ing..
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 shield cup in place. Position the
torch with the shield cup facing upward to
prevent 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 cannot
be removed may effect the performance of
the system.
2. Inspect the cup for damage. Wipe it clean or
replace if damaged.
A-03645
Electrode
Start Cartridge
Tip
Shield Cup
Torch Head
Consumable Parts
3. Remove the tip. Check for excessive wear (in-
dicated by an elongated or oversized orifice).
Clean or replace the tip if necessary.
Good Tip Worn Tip
A-03406
Tip Wear
4. Remove the starter cartridge. Check for exces-
sive wear, plugged gas holes, or discoloration.
Check the lower end fitting for free motion.
Replace if necessary.