Tweco PC-500 - Manual (Page 31)

Manual 0-4601 4-5 OPERATION
H. Select Current Output Level
1. Place RUN / Rapid Auto Restart / SET to RUN (up) or Rapid Auto Restart (center) position. Gas flow stops.
2. Set the output current output level.
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I. Cutting Operation
Refer to the manual supplied with the torch for details on cutting operation, cutting speeds, parts selection and
replacement, etc.
When the torch leaves the workpiece during cutting operations with the RUN / Rapid Auto Restart / SET switch
in the RUN (up) position, there is a brief delay in restarting the pilot arc. With the switch in the 'Rapid Auto
Restart' (middle) position, when the torch leaves the workpiece the pilot arc restarts instantly, and the cutting arc
restarts instantly when the pilot arc contacts the workpiece. Use the 'Rapid Auto Restart' position when cutting
expanded metal or gratings, or in gouging or trimming operations when an uninterrupted restart is desired.
J. Typical Cutting Speeds
Cutting speeds vary according to torch output amperage, the type of material being cut, and operator skill. Refer
to the Torch Manual for details.
Output current setting or cutting speeds may be reduced to allow slower cutting when following a line, or using
a template or cutting guide, while still producing cuts of excellent quality.