Thermal Arc 185 AC, Service Manual

Page: 35 / 122

6-1
ARCMASTER 185 ACDC 200 ACDC
May 22, 2006
SECTION 6:
SEQUENCE OF OPERATION
NOTE
Scroll Buttons are used to select the parameters
to be set. The LED's show which function is
being adjusted on the weld sequence graph.
Refer to the Symbols Table located in the front
of the manual for Symbol descriptions.
9 1
10
2
5
7
4 6
3
8
Figure 6-1: 185/200 ACDC Front Panel
1) Pulse function: Pressing this button enables the TIG
current pulse functions.
2. Remote Current function: Pressing this button enables
remote current functions.
3. TIG Mode Functions: Pressing this button scrolls through
the output TIG function modes (Standard, Slope, Slope
w/repeat, Spot).
4. Digital LED display: Welding amperage and parameter
values are displayed in this window. Internal warnings
such as over temperature, low or high input voltage
applied are signaled to the operator by a warning sound
and error message on the screen.
5. Save/Load Buttons: by using the Save & Load buttons
the operator can easily save up to 5 welding parameter
programs.
6. Control knob: allows the operator to adjust the output
amperage within the entire range of the power source
and sets each parameter value.
7. Process Button: This button selects between STICK, HF
TIG and Lift TIG mode.
8. Scroll Buttons: used to select the parameters to be set.
The LED's show which function is being adjusted on the
Sequence Graph.
9. AC/DC Button: Selects between AC or DC welding output.
10. Contactor function: Pressing this button enables
Contactor functions.
6.01 Stick Welding
• Connect work lead to negative terminal.
• Connect electrode lead to positive terminal.
• Switch machine on.
• Set AC or DC weld current. If AC is selected then set
AC FREQ to 60Hz & WAVE BALANCE to 50%.
• Set Contactor.
• Connect remote control device if required.
Use the Scroll Buttons to move to the parameter to be set.
The LED will show which function is being adjusted on the
weld sequence graph. Use the control knob to adjust each
parameter.
• Set HOT START.
• Set WELD current.
Commence welding.
6.02 AC or DC HF TIG Welding
• Connect work lead to positive terminal.
• Connect TIG torch to negative terminal.
• Switch machine on.
• Set AC or DC weld current. If AC is selected then set
AC FREQ & WAVE BALANCE .
• Connect remote control device if required.
Use the Scroll Buttons to move to the parameter to be set.
The LED will show which function is being adjusted on the
weld sequence graph. Use the control knob to adjust each
parameter.
• Set PRE-FLOW time.
• Set HOT START current.
• Set POST-FLOW time.
• Set (WELD) PEAK CUR current.
• Set POST-FLOW time.
Slope Mode Parameters if required.
• Set INTIAL CUR current.
• Set UP SLOPE time.
• Set (WELD) PEAK CUR current.
• Set BASE current.
• Set DOWN SLOPE time.
• Set CRATER CUR current.