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OVERUSE
can
cause
OVERHEATED
-
SIGNIFICANT DC VOLTAGE exists after
I
1.
Allow
cooling period.
1.
Turn Off
inverter,
disconnect
input
power, and
I
EQUIPMENT.
removal of
input
power
on
inverters.
I
Follow rated
duty cycle,
touching
any
parts.
2.
Reduce
current
or
reduce
duty cycle
before
discharge
input
capacitors
according
to
I
starting
to
weld
again.
Instructions
in
Maintenance
Section
before
I
STATIC ELECTRICITY
can
damage
parts
on
circuit boards.
BUILDUP OF SHIELDING GAS
can
harm
I
health
or
kill.
I
1.
Put
on
grounded
wrist
strap
BEFORE
handling
boards
or
parts.
rnove,
or
ship
PC boards.
1.
Shut off
shielding
gas
supply
when
not in
use.
Use proper
static-proof bags
and boxes to
store,
1-4.
Principal Safety
Standards
1-5.
EMF Information
Safety
in
Welding
and
Cutting,
ANSI
Standard
Z49.1,
from
American
Welding Society,
550 N.W. LeJeune
Rd,
Miami FL 33126
Safety
and Health
Standards,
OSHA
29
CFR
1910,
from
Superintendent
of
Documents,
U.S. Government
Printing
Office,
Washington,
D.C.
20402.
Recommended Safe Practices for the
Preparation
for
We/ding
and
Cutting
of Containers That Have Held Hazardous
Substances,
American
Welding Society
Standard AWS
F4.1,
from American
Welding Society,
550 N.W. LeJeune
Rd, Miami,
FL 33126
National Electrical
Code,
NFPA
Standard
70,
from National Fire
Protection Assoc
~n,
Batterymarch
Park,
Quincy,
MA 02269.
Safe
Handling
of
Compressed
Gases
in
Cylinders,
CGA
Pamphlet
P.1,
from
Compressed
Gas
Association,
1235 Jefferson Davis
Highway,
Suite
501,
Arlington,
VA 22202.
Code for
Safety
in
Welding
and
Cutting,
GSA Standard Wi
17.2,
from Canadian Standards
Association,
Standards
Sales,
178
Rexdale
Boulevard, Rexdale, Ontario,
Canada M9W
1
R3.
Safe Practices For
Occupation
And Educational
Eye
And Face
Protection,
ANSI
Standard
Z87.i,
from
American
National
Standards
Institute,
1430
Broadway,
New
York,
NY 10018.
Cutting
And
Welding
Processes,
NFPA Standard 51
B,
from
National Fire Protection
Association,
Batterymarch
Park,
Quincy,
MA 02269.
To reduce
magnetic
fields in the
workplace,
use
the
following
procedures:
Considerations About
Welding
And The Effects Of Low
Frequency
Electric And
Magnetic
Fields
The
following
is
a
quotation
from the General
Conclusions
Section
of
the
U.S.
Congress,
Office of
Technology
Assessment,
Biological
Effects
of
Power
Frequency
Electric
&
Magnetic
Fields
Background
Paper,
OTA-BP-E-53
(Washington,
DC:
U.S.
Government
Printing
Office, May
1989):
.
.
.
there is
now a
very
large
volume of
scientific
findings
based
on
experiments
at
the
cellular level and from studies with animals and
people
which
clearly
establish that low
frequency magnetic
fields
can
interact
with,
and
produce changes
in,
biological
systems.
While most of this work is of
very
high quality,
the
results
are
complex.
Current scientific
understanding
does
not
yet
allow
us
to
interpret
the evidence in
a
single
coherent framework. Even
more
frustrating,
it does
not
yet
allow
us
to
draw definite conclusions about
questions
of
possible
risk
or
to
offer clear science-based advice
on
strategies
to
minimize
or
avoid
potential
risks.
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 the
body.
4.
Keep welding
power
source
and cables
as
far away
as
practical.
5.
Connect work
clamp
to
workpiece
as
close
to
the weld
as
possible.
About Pacemakers:
The above
procedures
are
also recommended for
pacemaker
wearers.
Consult your doctor for
complete
information.
OM-167 302
Page
3
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Troubleshooting
