TroubleshooTing and sysTem TesTs
5-4 powermax
45
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.
•Plug in the power supply and make sure incoming power is ON if using a
line-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.
•Gas continues to flow for 20seconds.
•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 or the remote start switch for the machine
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 hand torch
or press the remote start switch for the machine
torch.
•The gas solenoid valve(V1) closes.
•The gas flow stops.
•The power circuits are ready.
•Turn the amperage adjustment knob to the gas test position.
•The gas solenoid valve(V1) opens to purge the system and to allow the
gas pressure to be set.
•The green power ON LED illuminates, indicating the system is ready for
operation.
•All the fault LEDs should be extinguished (see the Troubleshooting guide
on page 5-11 for more information).
•Verify that the gas pressure LED illuminates green and is centered in the
pressure bar.
•Set the amperage adjustment knob to the desired output current (between
20 and 45amps) based on the thickness of the metal to be cut.
•Set the mode switch to the desired mode for cutting or gouging.