Maintenance and inspection
OMCTT5621E18
44
10.1.2 Cables and hoses
10.2 Periodic check
Check item
Check point
Remarks
Grounding wires
Of this product
If the grounding wires are removed or
fastened securely.
To prevent a physical accident
caused by electric leakage, make
sure to check it.
Of the base metal
Water coolant (if used)
Input cables
Cable coating
Wear or damage.
To secure the physical safety and
stable arc, check those cables in
an appropriate manner according
to the conditions of shop floors.
Daily check: Quick and rough
check
Period check: Thorough check
• If any current-carrying parts is exposed other than the base-
material-side connection.
• If any heavy items not placed on the cable.
Output cables
Each connection
If it is fastened securely.
Cable coating
Wear or damage.
• If any current-carrying parts is exposed other than the base-
material-side connection.
• If any heavy items not placed on the cable.
Remote controller
and torch switch
cables
Connector
If it is inserted completely.
• If any current-carrying parts is exposed other than the base-
material-side connection.
• If any heavy items not placed on the cable.
Hoses
Joint
If it is fastened securely.
In case a hose band is used, if there is
any loose attachment.
If there is any defect, additional
fastening, hose replacement, etc.
are required.
Hose band (if used)
Wear or damage.
If any heavy items not placed on the cable.
WARNING
Touching any current-carrying parts may cause a fatal electric shock or burn
injury
• To secure physical safety, only educated and/or skilled persons who well understand the welding
power source should perform troubleshooting work.
• As for the inside check, make sure to conduct it at least 5 minutes after turning the power off in consid
-
eration of electric discharge from a capacitor.
• When removing the case’s top panel, etc., take care so that no other person approaches this product
without discretion (for example, by enclosing the product).
CAUTION
To prevent the electrostatic destruction of semiconductor parts and the printed
circuit board, observe the following.
Allow static electricity to escape by, for example, touching the metal parts of the case with your hand
before touching the equipment, the conductor of wire and/or the printed circuit board.
Notice
About cleaning of plastic parts
Plastic parts may be melted or deformed when they are subjected to organic solvent (benzine, toluene, kerosene,
gasoline, etc.).
When cleaning them, soak a soft cloth with a small amount of water or diluted mild detergent for home use, and
wring it and use for wiping those parts.
