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WELDING
can cause
fire
or
explosion.
Sparks
and
spatter
fly
off from the
weldin9
arc.
The
flying
sparks
and
hot
metal,
weld
spatter,
hot
workpiece,
and hot
equipment
can
cause
fires and
burns. Accidental contact of electrode
orwelding
wire
to
metal
objects
can cause
sparks, overheating,
or
fire.
1.
Protect
yourself
and others from
flying
sparks
and
hot metal.
2.
Do
not
weld where
flying
sparks
can
strike
flammable material.
3.
Remove all flammables within 35 ft
(10.7 m)
of the
welding
arc.
If
this
is
not
possible, tightly
cover
them with
approved
covers.
4.
Be alert that
welding
sparks
and hot
materials from
welding
can
easily
go
through
small cracks and
openings
to
adjacent
areas.
FLYING SPARKS
AND
HOT METAL
can
cause
injury.
Chipping
and
grinding
cause
flying
metal. As welds
cool,
they
can
throw off
slag.
CYLINDERS
can
explode
If
damaged.
Shielding
gas
cylinders
contain gas under
high
pressure. If
damaged,
a
cylinder
can
explode.
Since
gas
cylinders
are
normally
part
of
the
welding
process, be
sure
to treat them
carefully.
1.
Protect
compressed
gas
cylinders
from
excessive
heat,
mechanical
shocks,
and
arcs.
2.
Install and
secure
cylinders
in
an
upright
position by
chaining
them to
a
stationary
support
or
equipment
cylinder
rack to
prevent
falling
or
tipping.
5.
Watch for
fire,
and
keep
a
fire
extinguisher nearby.
6.
Be
aware
that
welding
on
a
ceiling,
floor, bulkhead,
or
partition
can
cause
fire
on
the hidden side.
Do
not
weld
on
closed containers such
as
tanks
or
drums.
Connect
work cable to the work
as
close to the
welding
area
as
practical
to
prevent
welding
current
from
traveling long, possibly
unknown
paths
and
causing
electric
shock and fire hazards.
Do
not
use
welder
to thaw
frozen
pipes.
Remove stick electrode from holder
or
cut
off
welding
wire
at
contact
tip
when
not
in
use.
11.
Wear oil-free
protective garments
such
as
leather
gloves, heavy
shirt,
cuffless trousers,
high
shoes,
and
a
cap.
1.
Wear
approved
face shield
or
safety goggles.
Side shields
recommended.
2.
Wear proper
body
protection
to
protect
skin.
3.
Keep cylinders
away
from
any
welding
or
other electrical
circuits.
4.
Never allow
a
welding
electrode
to touch
any
cylinder.
5.
Use
only
correct
shielding
gas
cylinders, regulators,
hoses,
and
fittings designed
for the
specific
application;
maintain
them and
associated
parts
in
good
condition.
6.
Turn face away from valve outlet when
opening cylinder
valve.
7.
Keep protective
cap in
place
over
valve
except
when
cylinder
is
in
use
or
connected for
use.
8.
Read and follow instructions
on
compressed
gas
cylinders,
associated
equipment,
and
CGA
publication
P-i listed
in
Safety
Standards.
PRINCIPAL SAFETY STANDARDS
Safety
in
Welding
and
Cutting,
ANSI Standard
Z49.1,
from American
Welding Society,
550 N.W. LeJeune
Rd.
Miami FL 33126
Safetyand
Health
Standards,
OSHA 29 CFR 1910, from
Superintendent
of
Documents,
U.S. Govemmerit
Printing
Office,
Washington,
D.C. 20402.
Recommended Safe Practices for the
Preparation
for
Welding
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
Association,
Batterymarch
Park,
Quincy,
MA 02269.
Safe
Handling
of
Compressed
Gases
in
Cylinders,
CGA
Pamphlet
P-i,
from
Compressed
Gas
Association,
1235 Jefferson Davis
Highway,
Suite
501.
Arlington,
VA
22202.
Code for
Safety
in
Welding
and
Cutting,
CSA Standard
Wi
17.2,
from
Canadian Standards Association, Standards
Sales,
178 Rexdale
Boulevard,
Rexdale,
Ontario,
Canada M9W
1
P3.
Safe Practices For
Occupation
And
Educat
lanai
EyeAnd
Face
Protection,
ANSI Standard Z87.
1,
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.
TABLE OF CONTENTS
SECTION
1
SPECIFICATIONS
1.1.
Volt-Ampere
Curve
And
Duty Cycle
Chart
SECTION
2
-
INSTALLATION
2-1.
Installing
Work
Clamp
2
2-2.
Installing
Gas
Supply
2
2-3.
Gun
Polarity
For
Wire
Type
2
Installing Welding
Gun
3
Connecting
Input
Power
3
Threading
And
Feeding Welding
Wire
4
SECTION
4-
MAINTENANCE
&
TROUBLESHOOTING
4-1.
Thermal Overload Protection
6
4-2.
Overload Protection
6
4-3.
Drive
Assembly
Maintenance
7
4-4.
Gun Maintenance
4-5.
Troubleshooting
SECTION
5
ELECTRICAL DIAGRAMS
9
SECTION
6
PARTS LIST
Figure
6-i.
Main
Assembly
11
5
Figure
6-2.
GA-i 6C Gun
7.
8.
9.
10.
2-4.
2-5.
2-6.
8
8
SECTION 3OPERATION
12
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