Tweco 15XC Merlin - Manual (Page 74)

CUSTOMER/OPERATOR SERVICE 5-2 Manual 0-2251
5.1 TORCH MAINTENANCE (continued)
Hand Torch Head
Replacement
5.2 HAND TORCH HEAD REPLACEMENT
WARNING
Disconnect primary power to the system before
disassembling the torch, leads, or power supply.
Refer to Figure 5-C and:
1. Roll the torch switch sheath up over the handle to
expose the two torch switch connectors.
2. Remove the tape from the end of the leads sleeving and
pull the sleeving back approximately one foot (0.3 m).
3. Remove the tape from the two single-pin torch switch
connectors and disconnect the torch switch leads.
NOTE
Figure 5-B Electrode Deterioration
If face of electrode is pitted or gouged more than 3/32 in
(2.4 mm) deep, the electrode should be replaced (see
Figure 5-B).
4. Replace the electrode in the torch body. Secure in place
using the electrode wrench.
5. Replace the tip in the front of the torch and secure it
with the tip wrench.
Do not overtighten the electrode or tip.
6. Inspect the shield cup for damage. Wipe it clean, or
replace if it appears to be damaged.
7. Re-install the shield cup. Apply a light coat of O-ring
lubricant to the shield cup O-rings (4,5). Use a slight
twisting motion to seat the cup properly on the O-rings
and against the torch face.
CAUTION
3/32 in
Look for extreme
pitted or blown out
appearance
Worn Electrode New Electrode