MAINTENANCE
3-4 powermax30 Service Manual
Sequence of operation
Power OFF
• Connect the gas supply to the air fitting on the power
supply.
• Connect the work lead to the workpiece.
• Apply power at the line-voltage disconnect box.
• Set the ON/OFF switch (S1) to ON (I)
Set the power switch (S1) to OFF (O).
• The gas solenoid valve (V1) closes.
• The gas flow stops.
• The arc extinguishes.
• Postflow continues for 20 seconds.
• Drag the torch lightly across the
workpiece to make a cut.
• The workpiece drops after the cut.
• Release the plasma start trigger on
the hand torch.
• The gas solenoid valve (V1) opens.
• The gas flow starts.
• The cutting arc starts.
• Position the torch on the workpiece.
• Pull the plasma start trigger on the torch.
The power circuits are ready.
• Set the amps adjustment knob to the desired output current
(between 15 and 30 amps) based on the input voltage and
circuit size.
• The green power ON LED illuminates, indicating the
system is ready for operation.
• All the fault LEDs should be extinguished (see
Troubleshooting guide
for more information).
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