2.7 Connection of Shielding Gas System
2-10
HW0480311
HW0480311
2.7
Connection of Shielding Gas System
2.7.1
For Mixed Gas or Carbon Dioxide Gas Welding
The 100 VAC power supply is required for a heater of carbon dioxide gas regulator. Connect
the gas cylinder as follows:
1.
Remove dust from the gas cylinder connecting port. Install the MAG/carbon dioxide
common gas regulator. Check the quality of the gas and the type of the cylinder.
2.
Insert one end to the supplied rubber gas hose into the output of the gas regulator, and
the other end into the gas terminal inlet of the wire feeder. Clamp both ends securely
with hose bands.
2.7.2
Installation Site and Gas Cylinder Environment
Handle the gas cylinder with special care because it contains high pressure gas. Refer to the
instruction manual attached to the gas cylinder.
1.
Installation SIte of Gas Cylinder
Place the gas cylinder in a specified gas container posi-
tion that is not exposed to direct sunlight. If the gas cyl-
inder is unavoidable placed at the welding site, it must
be fixed to post or cylinder stand in an upright position to
prevent it from falling. Also, the gas cylinder must not be
heated by a welding arc or the like.
2.
Type of Gas Cylinder
Carbon dioxide gas-filled cylinders can be classified into
two types: one is the general type that is not the siphon
type, and the other is the siphon type.
Never use siphon type gas cylinders. The provided car-
bon dioxide gas regulator is not applicable to siphon
type cylinder. If the regulator is connected to a siphon
type gas cylinder, the contents of the cylinder are not
gaseous and enter the regulator as remaining liquefied.
In such a case, the pressure reduction mechanism of
the regulator cannot be operated. The type of gas cylin-
der can be distinguished by cylinder color according to
the cylinder’s manufacturer. Contact the gas distributor
for details.
The safety valve operates when the pressure goes
extremely high. When the valve operates, stop opera-
tion immediately, confirm the reason, and take appropri-
ate corrective actions to prevent that the same error
occurs again.
Fig. 5 Installation Site of Gas
Cylinder
Gas cylinder
Gas cylinder stand
Fix the gas cylinder to prevent
it from falling.
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