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7 Operation of the power supply EX-TRAFIRE
®
105HD
7.1.3 Connecting the work lead
1 Remove contamination from the workpiece.
2 Connect the work lead clamp to the workpiece in order to allow
maximum electrical conduction.
3 Do not connect the work lead clamp to the material to be cut off.
4 Connect the work lead clamp as close as possible to the cutting area in
order to minimize electromagnetic fields.
7.2 Powering on the machine
Grid cutting
The current is 45–105 A.
The pressure of the cutting gas is
70 to 75 psi (4.8 to 5.2 bar).
Set the POWER switch to ON.
The following is displayed immediately
after switching on:
— Type of power supply (105HD)
— Length of torch cable 16.5 ft, 26 ft,
50 ft, 75 ft (5, 8, 15, 23 m)
— Type of cutting torch (hand or
machine)
—Current firmware
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