Welder Red Seal · Question
What critical safety precaution must be taken before performing maintenance, such as changing drive rolls, inside an automatic wire feeder?
Turning off the machine's switch is insufficient as capacitors can hold a charge and the machine could be inadvertently turned on. The only way to ensure the eq
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Question: What critical safety precaution must be taken before performing maintenance, such as changing drive rolls, inside an automatic wire feeder?
Answer options:
- Simply turn off the power switch on the welding power source
- Wear rubber-soled boots and dry gloves ✅ Ensure the main electrical supply to the power source is locked and tagged out
- Unplug the wire feeder control cable from the power source
Correct answer: Ensure the main electrical supply to the power source is locked and tagged out
Explanation: Turning off the machine's switch is insufficient as capacitors can hold a charge and the machine could be inadvertently turned on. The only way to ensure the equipment is de-energized is to follow lockout/tagout procedures at the main electrical disconnect.
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