-22-
Model G0879 (Mfd. Since 6/19)
NOTICE
The following instructions are not intended
to be a complete list of welding steps. To
become a good welder, read books on weld-
ing, get help from experienced welders, and
practice.
Although it is beyond the scope of this manual
to instruct how to weld, here are some general
guidelines for successful welding:
•
Read and understand this manual and ensure
that all safety instructions are followed.
•
Establish a safe and efficient welding envi-
ronment, and ensure that you are properly
protected for the welding operation. Ensure
that there is a working fire extinguisher read-
ily available.
•
Have an experienced welder stand by to
assist if needed.
•
Decide which type of weld is correct for your
project and properly prepare metal.
•
Choose correct amperage output and be
aware of duty cycle for this amperage.
•
Select correct electrode type and size for
your welding project.
•
Make sure welding cables and grounds are
secure.
•
Stay aware of work environment around
you as you weld and ensure that flying sparks
do not start a fire.
•
Look slightly ahead of the arc. Even with pro-
tection of welder's hood, looking directly at
arc can damage your eyes.
•
Listen to sound of the weld. Each type of
weld has its own distinct sound when it is
progressing correctly.
Operation Guidelines
Welder Duty Cycle
As the welder produces the desired power output
for the welding operation, power is converted to
heat. In order to protect the welder components
from over-heating, each welder has an estab-
lished duty cycle, which varies depending on 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 G0879 has a duty cycle
of 20% at 60A output. This means that the welder
can operate continuously for 2
minutes at 60A
output, then the arc must be stopped to allow the
welder, using the cooling fan, to cool off for at
least 8 minutes before starting the arc again.
The Model G0879 has a cooling fan and an inter-
nal thermostat that will shut the welder down if
the duty cycle is exceeded. This will be evident by
the loss of welding circuit and the orange warn-
ing light on the face of the welder will illuminate.
When the welder has cooled sufficiently, the inter-
nal thermostat will re-establish the welding circuit
and the orange warning light will go out.
NOTICE
Always keep the power ON to the welder
after completing the welding operation to
let the welder fan cool the welder down. To
avoid damage to your welder, never shut
the power OFF before the welder enclosure
is completely cool to the touch.
Summary of Contents for G0879
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