YASKAWA YWE-EH500-6N0 Instruction Manual page 5

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Be sure to observe the following warnings to avoid an electric shock.
• Never touch the charged parts.
Touching the charged parts may result in critical electric shock or burns.
• Only a qualified person in electric construction should perform ground-
ing construction for the welder case and base metals (to be welded) or
jigs that are electrically connected to the base metals as specified in
the electric facility technical reference.
• Be sure to perform installation or maintenance and inspection five min-
utes after all the input power supplies are turned OFF by using switches
in the switch box.
Even if the input power supply is turned OFF, the capacitor may still be charged. Be sure
to confirm that charged voltage is gone before starting operations.
• Do not use any cable of insufficient capacity or damaged or with its con-
ductor exposed.
• Tighten the cable connecting sections firmly and insulate them.
• Do not use the welder with its case or cover removed.
• Do not use worn, damaged or wet gloves. Always use dry insulated
gloves.
• Use lifelines when working at hights.
• Perform maintenance and inspection periodically. Repair damaged
parts immediately.
• Turn OFF all equipment input power supplies when not being used.
• When performing AC arc welding in a small space or at hights, be sure
to use equipment to prevent critical electric shock as specified by labor
safety and sanitary regulations.
WARNING
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