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MAINTENANCE |
MAINTENANCE
SAFETY PRECAUTIONS
WARNING
ELECTRIC SHOCK can kill.
• Only qualified personnel should perform this maintenance.
• Turn the input power OFF at the disconnect switch or fuse box before working on this equipment.
• Do not touch electrically hot parts.
ROUTINE AND PERIODIC
MAINTENANCE
WARNING
To avoid receiving a high frequency shock, keep the
TIG torch and cables in good condition.
1.Disconnect power supply lines to machine before performing periodic maintenance.
2.Periodically clean the inside of the machine with a low pressure air system. Be sure to clean the fol- lowing components thoroughly. See Figure D.1 for location of those components.
•Main Transformer
•Output Terminals
•Polarity Switch
•Rectifier Assembly
•Control Box Assembly
•Spark Gap Assembly
•Protection PC Board - (Mounted to rear of control box assembly)
3.Inspect welder output and control cables for fraying, cuts, and bare spots.
4.Keep TIG torch and cables in good condition.
5.The fan motor has sealed ball bearings which require no maintenance.
6.Inspect spark gap spacing at regular intervals to maintain a 0.015 in (0.4mm) gap. (Smallest possible air gap consistent with good welding is desirable to minimize R.F.I. problems.) Dressing or any refinishing of the spark gap contacts is not recommended. If the contact surfaces become irregular or completely eroded, replacement of both electrodes is recommended.