Tweco 1000 Cutting Systems - Manual (Page 34)

SERVICE 5-2 Manual 0-2710
NOTE
DO NOT use other lubricants or grease, they may
not be designed to operate within high tempera-
tures or may contain “unknown elements” 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.
5.03 Common Operating Faults
The following lists 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 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 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
j. Restricted coolant flow (over heating)
5. Poor Pilot Starting
a. Non-Genuine Thermal Dynamics Parts
b. High coolant conductivity (refer to Power Supply
Manual)
5.04 Inspection and Replacement
Consumable Torch Parts
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 on the front panel of the Power
Supply is ON.
Remove the consumable torch parts per the following
procedure (See Note):
NOTE
A multi-purpose wrench is supplied for changing
the tip, electrode and gas distributor in the torch
head.
1. Unscrew and remove the shield cup body and end
cap from the torch.
NOTE
Slag built up on the shield cup that cannot be re-
moved may effect the performance of the system.
Torch Head
Electrode
Tip
Gas Distributor
Shield Cup Body
Art # A-02207
End Cap
Figure 5-1 Consumable Parts