ESAB CUTMASTER 50+ Operating Manual page 44

CUTMASTER 50+, CUTMASTER 70+
Set Operating Pressure
Gas pressure can be set in the power supply, from 50 - 90 psi / 3.4 - 6.2 bar / 340- 620 kPa.
Cutting Operation
Once the cutting arc is established, it should continue to cut until the trigger is released (ex. 2T),
the torch is moved too far from the workpiece or the duty cycle has been exceeded causing the
system to go into an over temperature mode. In the first two instances release the torch trigger,
ensure that the torch tip is close to the workpiece, activate the trigger and reestablish the cutting
arc. In the event of an over temperature fault, release the trigger, allow the unit to run so it will
cool down. When the fault clears you can begin cutting again.
Typical Cutting Speeds
Cutting speeds vary according to torch output amperage, gas pressure, the type of material
being cut, and operator skill.
Output current setting or cutting speeds may be reduced to allow slower cutting when follow-
ing a line, or using a template or cutting guide while still producing cuts of excellent quality. As
thickness of metal being cut increases cutting speed will need to slow. The opposite is true. As
thickness of metal being cut decreases, allowable cutting speed can increase.
Postflow
Release the trigger to stop the cutting arc. Gas continues to flow for approximately 30 seconds.
During post - flow, if the user quickly presses and releases the trigger, the gas will shut off. If the
user continues to hold the trigger and not release it, the pilot arc starts. The main arc will transfer
to the workpiece if the torch tip is within transfer distance.
Shutdown
Turn the main switch to "O", to the left as you face the unit from the rear. After a short delay LCD
and fan shut OFF. Unplug the input power cord or disconnect input power. Power is removed
from the system.
NOTE!
To maximize the longevity of the internal electronics, allow the power supply to continue running (without cutting) for
a few minutes before turning OFF. This will allow them to cool faster.
44
Regulating Handle
OPERATION
1. Remove the right panel, inbuilt air regu-
lator assembly is located in front of the
power supply;
2. Turn the control knob to the GAS PURGE
position, press the knob, and gas will
flow.
3. Pull the regulating handle to adjust the
gas pressure;
Make clockwise adjustment to increase
the gas pressure;
Make counterclockwise adjustment to
decrease the gas pressure;
4. After finishing the adjustment, push the
regulating handle.
5. Reinstall the right panel.
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