MAWA-050A
Notification of Risk Information
12
23
WARNING
Electrode replacement
[Source of risk]
Electrode
[Contents of risk]
If another worker operates the welding power supply by mistake,
this may cause an electric shock due to a high voltage to the
worker who replaces the electrode. In case a voltage is left by
charged electrode, an electric shock may occur.
[Protective measure]
Before performing electrode replacing operations, turn off the
welding power supply. For other workers, “Under electrode
replacement” should be indicated.
Short-circuit the electrode with the grounding side to discharge a
charged status and then start electrode replacing operations.
24
WARNING
Welding power supply maintenance
[Source of risk]
Inside of the welding power supply
[Contents of risk]
If the case is removed and the internal high-voltage portion is
touched immediately after the power supply is turned on or off, this
may result in a death. Even after the power supply is turned off,
the capacitor remains charged for a certain time.
[Protective measure]
Do not open the case of the welding power supply. If a welding
power supply trouble occurs, make contact with us or the
distributor.
25
WARNING
Welding power supply removal
[Source of risk]
Input terminal and output terminal
[Contents of risk]
If the primary supply voltage is supplied to the input terminal or the
output terminal remains charged when the welding power supply
is removed, this may cause an electric shock.
[Protective measure]
Before removing the welding power supply, shut off the power to
the welding power supply and short-circuit the electrode with the
grounding side to discharge the electricity charged in the output
terminal. Then, remove the output terminal.
