Duty Cycle (Duration Of Use); Setting Up The Weld - Chicago Electric 69029 Owner's Manual

Basic Welding
To Prevent Serious Injury and Permanent Eye Damage:
Wear protective gear during use; an ANSI-approved welding mask shade 10, ear protection, welding
gloves and apron, NIOSH-approved respirator, and fire resistant work clothes without pockets.
Light from the arc can cause permanent damage to the eyes and skin. Do not breathe arc fumes.

Duty Cycle (Duration of Use)

20% RATED (225A)
DUTY CYCLE
2 minutes welding
followed by
at least 8 minutes of rest
Avoid damage to the Welder by not welding for more than
the prescribed duty cycle time. The duty cycle defines the
number of minutes, within a 10 minute period, during
which a given welder can produce a particular welding
current without overheating. For example, this Welder, at
its rated output, has a 20% duty cycle and must be
allowed to rest for at least 8 minutes after every
2 minutes of continuous welding. Failure to carefully
observe duty cycle limitations can easily over-stress a
welder's power generation system contributing to
premature welder failure.

Setting up the Weld

1. Make practice welds on pieces of scrap the same
thickness as your intended workpiece to practice
technique before welding anything of value.
Clean the weld surfaces thoroughly with a wire brush
or angle grinder; there must be no rust, paint, oil, or
other materials on the weld surfaces, only bare metal.
2. Use clamps (not included) to hold the workpieces
in position so that you can concentrate on proper
welding technique. The distance (if any) between the
two workpieces must be controlled properly to allow
the weld to hold both sides securely while allowing
the weld to penetrate fully into the joint. The edges
of thicker workpieces may need to be chamfered
(or beveled) to allow proper weld penetration.
Page 8 For technical questions, please call 1-800-444-3353.
Thermal Overload Protection - This Welder has an
internal thermal protection system to help prevent
this sort of over-stress. When the unit overheats, it
automatically shuts down and the Overload Light
turns on. The Welder automatically returns to service
after cooling off. Rest the Electrode Holder on an
electrically non-conductive, heat-proof surface, such as
a concrete slab, well clear of the ground clamp while
allowing the welder to cool with the Power Switch on, so
that the internal fan will help cool the Welder. When the
Welder can be used again, use shorter welding periods
and longer rest periods to prevent needless wear.
workpieces
Clean surfaces
to bare metal.
Chamfer thick workpieces.
clamps
SKU 69029