Common Operating Faults - Thermal Dynamics PAK 200 Operating Manual

PAK 200
C. Torch O-ring Lubrication
The internal o-rings on the torch head assembly
(electrode, gas distributor and tip) require lubrication
on a scheduled basis. This will allow the o-rings to
remain pliable and provide a proper seal. The o-rings
will dry out, becoming hard and cracked, if the o-ring
lubricant is not used on a regular basis. This can lead
to potential leaks internally and externally. Failure of
o-rings that seal against outside "air" entering the torch
assembly can cause severe contamination. These
contaminants can destroy or shorten the parts life of
tips, electrodes, and internal torch parts.
It is recommended to apply a very light film of o-ring
lubricant, (Catalog Number 8-4025), to the internal
torch head assembly o-rings on a weekly basis.
DO NOT use other lubricants or grease, they
may not be designed to operate within high
temperatures or may contain "unknown ele-
ments" that may react with the atmosphere.
This reaction can leave contaminants inside the
torch. Either of these conditions can lead to
inconsistent performance or poor parts life.

7.03 Common Operating Faults

The following lists the more common cutting faults and
what is the possible cause:
1. Insufficient Penetration
a. Cutting speed too fast
b. Torch tilted too much
c. Metal too thick
d. Worn torch parts
e. Cutting current too low
f. Non-Genuine Thermal Dynamics Parts
2. Main Arc Extinguishes
a. Cutting speed too slow
b. Torch standoff too high from workpiece
c. Cutting current too high
d. Work cable disconnected
TORCH MAINTENANCE
NOTE
e. Worn torch parts
f. Non-Genuine Thermal Dynamics Parts
3. Excessive Dross Formation
a. Cutting speed too slow
b. Torch standoff too high from workpiece
c. Worn torch parts
d. Improper cutting current
e. Non-Genuine Thermal Dynamics Parts
4. Short Torch Parts Life
a. Oil or moisture in air source
b. Exceeding system capability (material too thick)
c. Excessive pilot arc time
d. Air flow too low (incorrect pressure)
e. Improperly assembled torch
f. Output current too high
g. Torch tip contacting workpiece
h. Damaged or loose torch head components
i. Non-Genuine Thermal Dynamics Parts
7-2 Manual 0-5057