SET-UP, OPERATION & TROUBLSHOOTING
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3.2 CSA/UL Duty Cycle
The letter “X” stands for duty cycle, which is defined
as the proportion of the time that a machine can work
continuously within a defined time (10 minutes) at the
rated welding current. CSA/UL is 10 minutes @ 105°F.
The relation between the duty cycle “X” and the
output welding current “I” is shown as the right figure.
If the welder over-heats due to operation beyond duty-cycle, the IGBT over-heat
protection will output an instruction to cut output welding current, and brighten the over-heat
pilot lamp on the front panel. If this condition occurs, welding should stop for 10 minutes while
the machine cooling fan reduces internal heat. When operating the machine again, the
welding output current or the duty cycle should be reduced so as not to repeat over-heating
condition.
3.3 Movement and placement
Place the welder on a firm surface in horizontal position with all four feet in contact.
Locate machine in dry, clean environment with open-air space for cooling.
Place gas cylinder in upright position and secure in place for safe operation.
Make sure that all cables and torches are in a safe position before using welder.
Ensure all electrical and grounding connections are secure per local codes.
Safety shields and curtains should be used to protect other personnel in shop.
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