Tweco CutMaster 12mm-20mm-25mm - Manual (Page 29)

CUTMASTER 12mm, 20mm, 25mm
Manual 0-5117 4-1 OPERATION
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
restarting of the Pilot Arc for uninterrupted cutting.
LATCH Used for longer hand held
cuts. Once a cutting arc is established, the torch
switch can be released. The cutting arc will re-
main 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
operation. Blinking light indicates unit is in pro-
tective 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 suf-
ficient for torch operation.
8. DC Indicator
Indicator is ON when DC output circuit is ac-
tive.
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 Con-
trol Knob (number 4).