P
OWER
ON
AND
G
AS
S
UPPLY
W
ELDING
O
PERATION
C
HAPTER
5
51
Chapter 5
W
elding Operation
5.3 Power ON and Gas Supply
This section explains how to supply power and shield gas.
1.
Supply the input power.
●
Operate the disconnect switch to supply the input power.
The power LED switch lights up.
2.
Turn ON the power switch of the welding power supply.
3.
Check that the flow rate adjustment knob is set to "SHUT", and press the GAS CHECK key.
The LED of the GAS CHECK key lights up, turning to the gas check status (shield gas is discharged).
The gas check status continues for approximately 2 minutes, and automatically stops. To stop the gas check
during the sequence, press the GAS CHECK key again to turn off the LED light.
4.
Open the main tap of shield gas.
●
When the gas regulator is equipped with a pressure gauge, open the main tap by checking the pressure gauge
until the appropriate pressure is obtained.
5.
Turn the flow rate adjustment knob to "OPEN", and adjust the flow rate of shield gas.
6.
Press the GAS CHECK key.
The LED of the GAS CHECK key lights off, to stop gas check.
•
Handle the gas cylinder according to the related laws or regulations as well as the
internal standard of the customer.
Note that the gas cylinder contains a high-pressure gas. Wrong operation may cause
gas explosion, resulting in serious physical injury.
•
In opening the valve of gas cylinder, keep your face away from the gas discharge port.
If the connection should be loose, high-pressure gas may burst out.
•
Keep your hands, fingers, hairs and clothes away from the rotating cooling fan and the
open parts around the cooling fan;
it could result in entanglement with the internal fan.
OPEN
ON
SHUT
Input power supply
Power ON
Flow rate
adjustment knob
Welding power
source
Power switch
GAS CHECK key
Main valve
Welding power
source
