Tweco SL100 - Manual (Page 5)

Manual 0-2880 5
Common Operating Faults
The following are the more common cutting faults and
the possible causes:
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 Victor 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
e. Worn torch parts
f. Non-Genuine Victor 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 Victor 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. Gas pressure too low
e. Improperly assembled torch
f. Non-Genuine Victor Thermal Dynamics Parts
5. Difficult Starting
a. Worn torch consumables
b. Non - Genuine Victor Thermal Dynamics Parts
6. Torch will not pilot when torch switch is activated
a. Upper O-ring on torch head is in wrong position
Lower O-Ring
Upper O-Ring
in Correct Groove
Upper Groove
with Vent Holes
Must Remain Open
Threads
Art # A-03640
Inspection and Replacement of
Consumable Torch Parts
A. General Information
WARNINGS
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.
Unthread the shield cup assembly to remove the consum-
able torch parts.
1. Inspect the cup for damage. Wipe it clean or replace if
damaged. Slag built up on the shield cup that cannot
be removed may affect the performance of the system.
Art # A-03417
Electrode
Start Cartridge
Tip
Shield Cup
Assembly
Torch Head
2. Check the tip for excessive wear (indicated by an
elongated or oversized orifice). Clean or replace the
tip if necessary.