Grizzly 230V - Manual (Page 12)

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H8151 230V Mini Welder
SECTION 4: OPERATIONS
Damage to your eyes and lungs could result
from using this machine without proper pro-
tective gear. Always wear safety glasses and
a respirator when operating this machine.
Loose hair and cloth-
ing could get caught in
machinery and cause seri-
ous personal injury. Keep
loose clothing and long
hair away from moving
machinery.
NOTICE
If you have never used this type of machine
or equipment before, WE STRONGLY REC-
OMMEND that you read books, trade maga-
zines, or get formal training before begin-
ning any projects. Regardless of the con-
tent in this section, Grizzly Industrial will
not be held liable for accidents caused by
lack of training.
Operation Safety Welder Duty Cycle
As the welder produces the desired power output
for the welding operation, some of the power is
converted to heat. In order to protect the welder
components from over-heating, each welder has
an established duty cycle. The duty cycle is vari-
able depending upon the amperage output being
used.
A duty cycle is the number of minutes out of 10
minutes that the welder can safely operate at the
current amperage output without over-heating.
For instance, the Model H8151 has a duty cycle
of 60% at 95A output. This means that the welder
can operate continuously for 6
out of 10 minutes
with a 95A output before the welder needs to cool
off.
The Model H8151 operates with an efficient cool-
ing fan (at the rear of the welder) and has an
internal thermostat that will shut the welder down
at the end of the duty cycle. This will be evident
by the loss of welding circuit and the red warning
light on the face of the welder. When the welder
has cooled sufficiently, the internal thermostat will
allow the welding circuit to once again be used
and the red warning light will go out.
Note: Most electrodes used with arc welding are
consumed within a few minutes, so the welder
has a chance to cool down when the welding cir-
cuit is stopped to install a new electrode.