Thermal Dynamics A80 CUTMASTER, Operating Manual, Page: 37 / 130

A80
0-4985 OPERATION
4-1
SECTION 4 SYSTEM:
OPERATION
4.01 Front Panel Controls / Features
See Illustration for numbering Identification
1. Output Current Control
Sets the desired output current. Output settings up to
60 Amps may be used for drag cutting (with the torch tip
contacting the workpiece) or higher for standoff cutting.
2. Function Control
Function Control Knob, Used to select between the
different operating modes.
SET Used to purge the air through the unit and
torch and leads and to adjust gas pressure.
RUN Used for general cutting operations
RAPID AUTO RESTART Allows for faster restart-
ing of the Pilot Arc for uninterrupted cutting.
LATCH Used for longer hand held or
mechanical cuts. (Does not apply to automation).
Once a cutting arc is established, the torch switch can
be released. The cutting arc will remain ON until the
torch is lifted away from the work piece, the torch
leaves the edge of the work piece the torch switch is
activated again or if one of the system interlocks is
activated.
3. ON OFF Power Switch
ON / OFF Switch controls input power to the
power supply. Up is ON, down is OFF.
4. Air/Gas Pressure Control
The Pressure
+
Control is used in the "SET"
mode to adjust the air/gas pressure. Pull the knob out
to adjust and push in to lock.
5. AC Indicator
Steady light indicates power supply is ready for op-
eration. Blinking light indicates unit is in protective
interlock mode. Shut unit OFF, shut OFF or disconnect
input power, correct the fault, and restart the unit. Refer
to Section 5 for details.
A
+
PSI BAR
MAX MAX
MIN MIN
!
1 2
3
4
5 6 7 8 9
Art# A-07886
MIN
MAX
10
6. Temp Indicator
Indicator is normally OFF. Indicator is ON when internal
temperature exceeds normal limits. Let the unit cool
before continuing operation.
7. Gas Indicator
Indicator is ON when minimum input gas pressure for
power supply operation is present. Minimum pressure
for power supply operation is not sufficient for torch
operation.
8. DC Indicator
Indicator is ON when DC output circuit is active.
9.
!
Fault Error Indicator
Indicator is ON when Fault circuit is active. See section
5 for explanations of fault lights.
10. Pressure Indicators
PSI BAR
MAX MAX
MIN MIN
80
75
70
65 5.5
85 5.9
90 6.3
5.2
4.8
4.5
Art # A-08170
The Indicators will illuminate according to the pressure
set by the Pressure Control Knob (number 4).