- 12 -
2. The rear panel and parts number reference
Figure 6: Rear panel
(1)
Circuit breaker
The function of circuit breaker is to protect welding machine by automatic trip to
turn-off power supply while in machine overload or failure. Normally, the switch
flipped to upward which means power-on. Use switch on the disconnected
switchboard or switchbox (customers prepare by them) to start or stop welding
machine, avoiding using the circuit breaker.
(2)
Input power cable
The mixed-colored wire must be firmly grounded, the rest wires connect to 3-phase
power (380V/50Hz) respectively.
(3)
Cooling fan
Cool down the heat components in the welding machine.
(4)
Gas Heater power cable socket
Connect to CO2 regulator’s heating coil. The voltage is 10V in stand by mode (to
protect the gas meter).