Maintenance And Inspection - Panasonic YC-500WX Operating Instructions Manual

8 MAINTENANCE AND INSPECTION

Due attention should be paid to periodical maintenance and inspection for safe operation of the welding
machine.
Before checking interior and exterior terminal of the welding machine, be sure to turn the switch box OFF at
the primary side.

[Daily precautions]
1. Check for abnormal vibration, beat or smell.
2. Check for abnormal heating at the cable connections.
3. Ensure that the welding machine cooling fan rotates smoothly with power ON.
4. Check the switch for abnormal operation.
5. Check for poor cable connection and insulation.
6. Check the cable for any possible disconneciton.

[3-to-6-month inspection]
1. Checking electrical connection sections
Ensure that tightening screws at the input and output side cable connections of welding machine are not
loose, rust does not worsen the electric contact, and check for any problem in insulation.
2. Grounding line
Ensure that the welding machine case is completely grounded.
3. Removing dust inside the welding machine
If dust is accumulated between windings of the transformer, for example, insulation may deteriorate
accordingly, therefore, remove the side top plates of the welding machine at least once per 6 months, and
blow compressed air with less moisture against each section for cleaning.

[adjustment high-frequency voltage]
Do not touch the spark is gap in normal case. (The distance between spark gap is adjusted for 1.2mm) When
the electrode is significantly no-uniform and contaminated on the surface, clean the surface, and then adjust
the spark gap for 1.2mm. (To do this, use a thickness gauge.)

[Precautions after maintenance and inspection]
When removing a top panel, side panel and rear panel for maintenance and inspection, do not fail to re-install
them just as they were.
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