Mitsubishi Electronics FR-A500L Welding System User Manual


 
SAFETY INSTRUCTIONS
1. Electric Shock Prevention
WARNING
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While power is on or when the inverter is running, do not open the front door. You may get an electric
shock.
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Do not run the inverter with the front door opened. Contact with the exposed high-voltage terminals or
charging part of circuitry will cause an electric shock.
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If power is off, do not open the front door except for wiring or periodic inspection. You may access the
charged inverter circuits and get an electric shock.
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Before starting wiring or inspection, switch power off, wait for more at least 10 minutes and check for the
presence of any residual voltage with meter (see chapter 2 for-further details.) etc.
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Any person who is involved in the wiring or inspection of this equipment should be fully competent to do
the work.
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Always install the inverter before wiring. Otherwise, you may get an electric shock or be injured.
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Operate the switches with dry hands to prevent an electric shock.
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Do not subject the cables to scratches, excessive stress, heavy loads or pinching. Otherwise, you may
get an electric shock.
2. Fire Prevention
CAUTION
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Install the inverter on an incombustible cubicle. Installing the inverter directly on or near a combustible
surface could lead to a fire.
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If the inverter has become faulty, switch off the inverter power. A continuous flow of large current could
cause a fire.
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Do not connect the resistor directly to the DC terminals +(P), -(N). This could cause a fire.
3. Injury Prevention
CAUTION
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Apply only the voltage specified in the instruction manual to each terminal to prevent damage, etc.
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Ensure that the cables are connected to the correct terminals. Otherwise, damage, etc. may occur.
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Always make sure that polarity is correct to prevent damage, etc.
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After the inverter has been operating for a relatively long period of time, do not touch the inverter as it
may be hot and you may get burnt.