Operating Instructions; Before You Begin Welding; Understanding Duty Cycle (Duration Of Use) - Chicago Electric 95424 Assembly And Operating Instructions Manual

Mig/arc welder dual mig welder

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Table of Contents

Good welding requires a high degree of skill and experience. You should practice

a few sample welds on scrap metal before you begin welding your first project. Ad-

ditional practice periods are recommended whenever you weld a different thickness

of material, wire, or weld a different type of connection.

UnDERstAnDInG DUty CyCLE (DURAtIOn Of UsE)

CAUtIOn! Avoid damage to the Welder by not leaving the unit on 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 safely produce a particular welding current. for example,

this Welder, with a 30% duty cycle at 250 Amps must be allowed to rest for at

least 7 minutes after every 3 minutes of continuous weld at 250 Amps. (see

figure H.)

Failure to carefully observe duty cycle limitations can easily over-stress a Welder's

power generation system, contributing to premature Welder failure.

This Welder is equipped with an internal thermal protection system to help prevent

over stressing the unit. When the unit overheats, it automatically shuts down, then

automatically returns to service when it cools down.

note: Once the unit returns to service, follow a more conservative duty cycle routine to

help prevent excess wear to the Welder. (see figure H.)

SKU 95424, 95629