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9.
WELDING PREPARATION (continued)
9.2 Operating the Switches and Controlling the Gas Regulator
CAUTION
٨
Keep your face away from the outlet when turning on gas at the main of the gas cylinder, as
burst of high-pressure gas may result in physical injuries.
NOTE: Gas checking automatically stops in two minutes.
9.3 Selecting the cooling method
CAUTION
٨
When using the water-cooled torch, supply water-cooled torch from the outlet for cooling
water on the rear panel of the welding power source. And turn torch change-over key to the
"WATER COOLED" side.
٨
If cooling water is supplied directly to the torch with the welding power source bypassed,
and the water-cooled torch is used with the torch selector key set at air side, it cannot be
detected whether cooling water is flowing, and in case where no cooling water is flowing, the
torch may be burnt.
When using a water-cooled torch, select “WATER” by pressing the
TORCH key once.
[WATER]: The TORCH lamp is on.
[AIR]: The TORCH lamp is off.
Ԙ
Turn on the line disconnect
switch. (400V, 3
Ǿ
)
ԛ
Set the gas regulator to “SHUT”, then
turn on gas at the main valve.
Ԝ
Set the gas regulator adjusting knob
to “OPEN” to adjust the gas flow rate.
Ԛ
Press the GAS CHECK
key. (The GAS CHECK
lamp lights up.)
ԝ
Press the GAS CHECK
button again. (The GAS
CHECK lamp goes out.)
ԙ
Place the power switch in the “I” (ON)
position.
Gas flow rate adjusting knob