BUG-O Systems SE-4PTD - Manual (Page 6)

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The adjustable pipe support (A) is attached to the rear of the machine, for use with long pipes, to help
keep the pipe (B) aligned (see below). Make sure to adjust the height of the rollers (C) so that the pipe
runs true when rotating. Two threaded rods are provided for different diameter ranges; use the 4 ¼''
(108mm) rod (D) for diameters from 8'' (203mm) to 12'' (305mm) and the 7 ¼'' (184mm) rod for diam-
eters from 4''(102mm) to 8'' (203 mm).
The SE-4PTD is now ready to be programmed for operation.
PIPE SUPPORT
SE-4PTD REAR VIEW PLASMA CUTTING
The SE-4PTD can be used successfully for plasma cutting; however it is important to take certain
precautions to avoid interference and protect the control circuits. (These comments also apply to the
TIG welding or any process that uses high frequency to strike an arc.) An external relay box is available
separately or in the welding kit to provide the contact signal to the plasma source.
PRECAUTIONS:
1. NEVER lay the plasma gun cable across the top of the machine. The further away from the machine
it can be routed and supported, the better.
2. See that all grounding procedures specified for the plasma source are followed diligently.
3. If the high frequency is produced using a spark gap, adjust the points so that the gap is as small as
possible. The larger the gap, the higher the voltage and stronger the interference.
4. We strongly recommend you disconnect the Hand Held Terminal (programming pendant) when
running the machine. Any length of wire acts as an antenna to receive HF radiation, and though the
cable is shielded, it is possible for some induced voltage to leak through.
5. Use separate power line branched whenever possible to power the plasma source and the ma-
chine. Do not plug them into the same outlet box.
6. Though there is an internal power line filter, an external protective device will always help. Computer
equipment line protection boxes are readily available at low cost, with surge suppression and line
filtering circuitry. The machine can be plugged into the power line through one of these boxes.