B. Extension Cords
Extension cords must meet National Electric Code guidelines. Extension cords must be rated for at least 20 amps and
must have three-prong plugs. Refer to the following table for recommended cord sizes:
Extension Cord Wire Gauge Requirements
Cord Length
Wire Gauge
50 ft. (15.2 m) or less
12 gauge
100 ft. (30.5 m)
10 gauge
150 ft (45.7 m)
8 gauge
The primary power source, power cable, and plug all must conform to local electrical codes and
recommended circuit protection and wiring requirements.
Air supply must be free of oil, moisture, and other contaminants. Excessive oil and moisture
may cause double-arcing, rapid tip wear, or even complete torch failure. Contaminants may cause poor cutting per-
formance and rapid electrode wear. The air pressure regulator assembly integrated in the machine is also an adequate
filter and moisture trap.
FUNCTIONAL OVERVIEW
The Firepower PC250 Plasma Cutting System is designed to provide a plasma cutting system which can cut most
metals from gauge thickness up to 1/4 inch (6.4 mm).
OPERATING CONTROLS
1. ON/OFF Switch
ON position supplies AC power to activate
all system control circuits. OFF position
deactivates control circuits.
2. Green LED
After switching the unit on the green LED
blinks for 5 seconds indicating condensors are
in charge and the unit is getting ready for use.
After 5 seconds the LED remains on and the
unit is ready. The LED blinks for 3 seconds
after having pressed and released the torch
trigger. This is the time you have to press the
trigger again and initiate the arc. Slow blinking
green LED indicates that the unit is in over-
voltage. The LED blinks for 10 seconds then it
tests the line voltage for 2 seconds. If it is ok,
it remains on. If it is not ok, procedure repeats
until the voltage is ok.
CAUTION
CAUTION
Figure A Controls and Indicators
12
