Tweco 39 CutMaster - Manual (Page 30)

cutmaster 39
OPERATION 4-2 Manual 0-4975
B. Control Panel
A-07931
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1. ON / OFF Switch
Controls input power to the power supply. Up is ON, down is OFF.
2. RUN / SET Switch
RUN (up) position is for general torch operation. SET (down) position is for setting gas pressure and purging
lines.
3. (A) Output Current Control
Sets the desired output current. If the overload protection (fuse or circuit breaker) on the input power circuit
opens frequently, either reduce cutting output, reduce the cutting time, or connect the unit to more adequate
input power. Refer to Section 2 for input power requirements.
4. AC Indicator
Steady light indicates power supply is ready for operation. Blinking light indicates unit is in protective in-
terlock mode. Shut unit off, shut off or disconnect input power, correct the fault, and restart the unit. Refer to
Section 5 for details.
5. TEMP Indicator
Indicator is normally OFF. Indicator is ON when internal temperature exceeds normal limits. Allow the unit
to run with the fan on until the Temp indicator turns off.
6. GAS Indicator
Indicator is ON when adequate input gas pressure is present to operate the power supply.
7. DC Indicator
Indicator is ON when DC output circuit is active.