12
than 40m), arc force current should be adjusted in the range of 1-7 . As to large welding current
and long cable of electrode holder, where volt potential difference is very high between the two
ends of cable, arc force current should be adjusted in the range of 7- 10.
1.2 The rear panel and parts number reference
Figure 6: Rear Panel
(1) Circuit Breaker
The function of air switch 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 means power-on. Use
switch on the switch box to start or stop welding machine. Don’t use this air switch as power switch.
(2) Input power cable
It is 4-pin cable. The mixed-colored wire must be firmly grounded, the rest wires connect to
corresponding 3-phase power supply.
(3) Specification plate
(4) Cooling fan
Cool down the heat components in the welding machine.
(5)Earthing bolt
To ensure operators not to be harmed and welding machine to work normally, make sure the
earthing bolt grounded firmly by ground cable, or make sure the ground wire (mixed-colored) of the
input power cable grounded firmly.
(6) Input warning mark
(7)
Gas inlet
Connect to Argon gas regulator with gas hose.
