Tweco 42 CutMaster Service Manual - Manual (Page 27)

OPERATION CUTMASTER 42
Manual 0-5171 4-1 Operation
SECTION 4 SYSTEM:
OPERATION
4.01 Control Panel
Art# A-09338-AD
CUTMASTER ® 42
AC Indicator
The Front Panel The Rear Panel
Overheat Indicator
Air Indicator
DC Indicator (Ready)
Air Inlet
On/Off
Switch
Power Cord
A
120V 15A
120V 20A
230V 20A
24
40
20
20
30
27
1. ON / OFF Switch (Power Switch/Lamp)
Controls input power to the power supply. I is ON (Red Lamp), O is OFF.
2. (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. Note: For 120V input power, the unit will automatically limit the output current to a maximum of
27A. For 230V input power, the maximum output is 40 Amps. Refer to Section 2 for input power requirements.
3. AC Indicator
Steady light indicates power supply is ready for operation.
4. OVERHEAT Indicator (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.
5. AIR Indicator
AIR light should be ON when there is sufficient gas pressure.
6. READY (DC Indicator)
Indicator is ON when DC output circuit is active.