Thermal Arc 180 AC, User Manual

Page: 27 / 36

Notice NOT 034
THERMAL ARC 180 AC/DC
Rev : 00
Date : 03/12/02
USING
USER’S MANUAL
Page
27/36
16. HIDDEN WELDING PARAMETERS
Some welding parameters are not directly adjustable :
- Pre-heat time at ignition in TIG AC welding mode
-
initial current
- final current
- Hot start time
To adjust these parameters, press in the same time setting keys F7 and F14 , then release. The
indicator F18 (A) goes out.
Turn potentiometer F9 until value :
33
for adjustment of pre-heat time at ignition in TIG AC welding mode
40
for adjustment of initial current
41
for adjustment of final current
42
for adjustment of Hot start time
238
for return of pre-adjusted values (factory settings)
Press any key to finish selection
Adjustment of pre-heat time at ignition in TIG AC welding mode
This time is the duration of the first positive alternating at the ignition in TIG AC welding mode. Chosen
a long time gives a better ignition. Unfortunatly, it damages grinded electrode’s head.
Adjust the time with potentiometer
F9 . The value can be read on display F5 .
The time can be adjusted from 0.1s to 1.0s.
It is pre adjusted to 0.1s.
Adjustment of initial current (I
d
)
Adjust the current with potentiometer F9 . The value can be read on display F5 .
The initial current can be adjusted between 3A and maximum current of the machine.
If initial current is less than 3A, the machine will automatically adjust the initial current to the pre-
adjusted value i.e 50% of welding current.
If initial current is more than welding current, the machine will automatically adjust the initial current to
welding current.
Adjustment of final current (I
f
)
Adjust the current with potentiometer F9 . The value can be read on display F5 .
The final current can be adjusted between 3A and maximum current of the machine.
If final current chosen is more than welding current, the machine will automatically adjust the final
current to welding current.
If initial current is more than welding current, the machine will automatically adjust the initial current to
welding current.
Adjustment of Hot start time : Stick welding
Adjust the Hot start time with the potentiometer F9 . The value can be read on the display F5 .
Time can be adjusted between 0.0s and 5.0s.
The pre-adjusted value is 0.0s.
The over current at ignition is 20%.