Tweco ArcMaster 401MST - Manual (Page 73)

ARCMASTER 401MST POWER SOURCE
Manual 0-5287 5-1 POWER SOURCE PROBLEMS AND ROUTINE SERVICE REQUIREMENTS
SECTION 5:
POWER SOURCE PROBLEMS AND ROUTINE SERVICE
REQUIREMENTS
5.01 Maintenance and Repair
!
WARNING
There are extremely dangerous voltage and power levels present inside this product. Do not attempt
to open or repair unless you are a qualified electrical tradesperson and you have had training in power
measurements and troubleshooting techniques.
If major complex subassemblies are faulty, then the Welding Power Source must be returned to an accredited
Tweco Service Provider for repair. The basic level of troubleshooting is that which can be performed without
special equipment or knowledge. Refer also to section 4 for solving welding problems.
The machine requires a minimum of care and maintenance. Only a few items need to be checked to ensure trouble-
free long-term operation.
Check the following points for damage before starting up the welding machine,
–– Mains plug and cable
–– Welding torch and connections
–– Keyboard membrane and control panel
Check the dust filter every two months.
–– Switch the machine off
–– Disconnect the mains plug
–– Unscrew the ventilation grid on the rear side
––Check the dust filter for pollution
––Replace the dust filter if it is polluted (dust filter)
Use only original TWECO spare parts for maintenance and repair.
If you experience problems or need repairs, contact a dealer authorised by Victor. Never make repairs or technical
changes yourself. In this case the manufacturer's warranty is no longer valid.