MK Welding PC 100 LCD CNC, Руководство пользователя

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§4.2 Troubleshooting Principle
WARNING
There are extremely dangerous voltage and power levels present inside this unit. Do
not attempt to diagnose or repair unless you have had training in power electronics
measurement and troubleshooting techniques.
A. Power lamp and temperature lamp on.
1. Air flow blocked, check for blocked air flow around the unit and correct condition.
2. Fan blocked, check and correct condition.
3. Unit is overheated, let unit cool down for at least 5 minutes. Make sure the unit has not
been operated beyond Duty Cycle limit, refer to technology parameters in Section 2.
4. Faulty components in unit, return for repair or have qualified technician repair per
Service Manual.
B. Torch fails to ignite the arc when torch switch is activated
1. System is in SET mode
，
change to RUN mode.
2. Faulty torch parts, inspect torch parts and replace if necessary.
3. Gas pressure too high or too low, adjust to proper pressure.
4. Faulty components in unit, return for repair or have qualified technician repair per Service
Manual.
C. No cutting output; Torch activated, power source on; Gas flows; Fan operates
1. Torch not properly connected to power supply, check that torch leads are properly
connected to power supply.
2. Work cable not connected to work piece, or connection is poor, make sure that work
cable has a proper connection to a clean, dry area of the workpiece.
3. Faulty components in unit, return for repair or have qualified technician repair per Service
Manual.