SECTION 1: SAFETY
AIR N ARC
®
300 SERIES ALL-IN-ONE POWER SYSTEM
®
PAGE - 18
090012-OP_r0
1.10
EMF INFORMATION
Considerations About Welding And The Effects Of Low
Frequency Electric And Magnetic Fields Welding current,
as it flows through welding cables, will cause
electromagnetic fields.
There has been and still is some concern about such
fields. However, after examining more than 500 studies
spanning seventeen years of research, a special blue
ribbon committee of the National Research Council
concluded that: “The body of evidence, in the
committee’s judgment, has not demonstrated that
exposure to power-frequency electric and magnetic fields
is a human-health hazard.” However, studies are still
going forth and evidence continues to be examined. Until
the final conclusions of the research are reached, you
may wish to minimize your exposure to electromagnetic
fields when welding or cutting.
To reduce magnetic fields in the workplace, use the
following procedures:
1. Keep cables close together by twisting or
taping them.
2. Arrange cables to one side and away from the
operator.
3. Do not coil or drape cables around your body.
4. Keep welding power source and cables as far
away from operator as possible.
5. Connect work clamp to workpiece as close to
the weld as possible.
About Pacemakers:
Pacemaker wearers consult your doctor before welding
or going near welding operations. If cleared by your
doctor, then following the above procedures is
recommended.
1.11 MACHINE CANOPY ACCESS
SAFETY SWITCHES
Consult
Figure 1-1
. The Air N Arc 300 Series machine pack-
age is equipped with two safety switches, which will either
shut down, or not allow the machine to start, if access doors
are bridged. The
hood safety switch
will not allow the
machine to start if the hood is open; the hood must be closed
in order to start the machine. However if the engine is run-
ning, the switch is bypassed, and the hood may be raised
without detriment to the operating state of the machine.
CAUTION
The machine is not designed to run with
the hood open as standard operating
procedure. The safety switch bypass is
designed to allow for observing machine
components in operating condition.
