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13
1.
Make sure the POWER switch on the front of the
cutter is OFF.
2.
Plug the power cord plug into the ac power source
receptacle.
EXTENSION CORD USE
For optimum cutter performance, an extension cord
should not be used unless absolutely necessary. If
necessary, care must be taken in selecting an
extension cord appropriate for use with your specific
cutter (see Table 5).
Select a properly grounded extension cord that mates
directly with the cutter ac power cord and ac power
source receptacle, without the use of adapters. Make
sure the extension cord is properly wired and in good
electrical condition.
Table 5.
Extension Cord Chart
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INSTALL COMPRESSED AIR
WARNING
GASES UNDER PRESSURE CAN EXPLODE
AND INJURE OR KILL
To reduce risk of death or injury from faulty
compressed air equipment, read, understand, and
follow the safety instructions in this manual. In
addition, make certain that anyone else that uses this
cutting equipment, or a bystander in the cutting area,
understands and follows the safety instructions as well.
COMPRESSED AIR REQUIREMENTS
The compressed air specifications for the plasma cutter
are provided in Table 6. This cutter uses only
compressed air. The compressed air is obtained from
an external compressed air source (not included) and
must be clean, dry, and oil-free. The 50 Amp cutters
come with a compressed air pre-regulator. The pre-
regulator is preset at the factory and is not adjustable.
Do not attempt to change the regulator setting. All
pressure adjustments are to be made only with the
control regulator on the front of the cutter.
An air line filter with a drain trap is required for use with
this plasma cutter. An air filter alone, may not be
sufficient to capture all of the moisture and oil expelled
by the compressor. If the compressed air is still not dry
enough (clean and oil free), install an after cooler (either
air or water cooled), and a condensate drain along with
the filter and drain trap. The after cooler and
condensate drain take out 80% of the water and oil, and
by doing so, increase the life of consumables. In some
situations, where high humidity is present, the addition
of a refrigerated dryer may be required to remove
excess moisture.
When you install the air filter and drain trap, make sure
the trap is upstream from the filter. Having the drain
before the filter allows for moisture removal prior to
filtration. If an after cooler and condensate drain are
required, the aftercooler receives the compressed air
first, then the condensate drain, the drain trap, and
finally the air filter. If a refrigerated dryer is being
installed, it should be placed between the condensate
drain and the drain trap.
DO NOT USE COMPRESSED GASES OTHER THAN
AIR! Compressed gases such as Argon, Hydrogen, or
Nitrogen are not acceptable for use in cutting. USE
ONLY COMPRESSED AIR!
Table 6.
Compressed Air Requirements
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CONNECT TO COMPRESSED AIR
SOURCE
1.
Obtain a 1/4" male pipe thread fitting with the
other end designed to mate with your compressed
air system.
2.
Apply pipe sealant or one wrap of teflon tape to
the threads of the fitting obtained in step 1.
3.
Thread fitting into the air inlet port of the cutter and
wrench tighten.
4.
Connect your compressed air line to the cutter.
PREPARATION
An important factor in obtaining satisfactory cutting
results is preparation. An organized, well-lighted, well-
ventilated work area should be available to provide
comfort, convenience, and safety to the operator and all
bystanders in the cutting area. It is a must that the
cutting area be cleared of all flammables and that a
type ABC chemical fire extinguisher is always close at
hand.
