Section 4-Operation - MAC TOOLS MW250 Owner's Manual

SECTION 4- OPERATION
4A
WARNING
ELECTRIC SHOCK
can
kill.
Always
wear
dry insulating gloves.
Insulate yourself from work and
ground.
Do
not
touch live electrical
parts.
Keep all
panels
and
covers
securely
in
place
FUMES AND GASES
can
be hazardous
to
your health.
Keep your head
out
of the fumes.
Ventilate
area, or use
breathing
device.
Read Material Safety Data Sheets (MSDSs) and
manufacturers
instructions for material used.
WELDING
can cause
fire
or
explosion.
Do
not weld
near
flammable material.
Watch for
fire; keep extinguisher nearby.
Do
not
locate unit
over
combustible surfaces.
Do not weld
on
closed containers.
Allow work
and
equipment
to cool
before
handling
ARCING
can
damage switch.
Do not
change Voltage
switch
position
while
welding.
Arcing inside switch
can
damage contacts, causing
switch
to
fail.
j~
~
-~-
ARC RAYS
can
burn eyes and
skin;
NOISE
can
damage hearing.
Wear welding helmet with
correct
shade of filter.
Wear correct eye,
ear,
and body
protection.
'
~
MOVING PARTS
can cause
Injury.
Keep
away from
pinch points such
as
drive rolls.
Keep all doors, panels, covers, and
guards
closed
and securely in place.
~-
~
~.
MAGNETIC FIELDS FROM HIGH CUR
RENTS
can
affect
pacemaker operation.
Pacemaker
wearers
keep
away.
Wearers should consult their doctor before
going
near arc
welding, gouging,
or
spot welding
opera
tions.
WELDING CURRENT
can
damage elec
tronic
parts
in vehicles.
Disconnect both battery cables before welding
on a
vehicle.
Place work
clamp
as
close
to the weld
as
possible.
See Safety Precautions
at beginning of manual for ba
sic welding safety information.
swam62
8/92
:
1
~
2 3
/
SD
Wear the following while
welding:
I Dry. Insulating Gloves
2 Safety
Glasses With Side
Shields
3 Welding Helmet With Correct
Shade Of Filter
(See
ANSI
Z49.1)
sb3.1 1/94
Figure 4-1. Safety Equipment
1 Wire Mode Switch
For better control of wire
speed
use
Low
position when wire speed is
between 90 and 670
ipm.
Use Full
position when wire speed is be
tween
150
ipm
and 1030
1pm.
2 Voltage Range
Selector
Place switch in desired position.
See inside
rear cover
for
settings.
Ref. ST.801 102 IS.171 601
Figure
4-2. Center Baffle Controls
OM-154501 Page 10