Changing Cylinders • 5
3
To change cylinders, the APC 300 must be switched on.
1. Shut the cylinder valve. The cylinder valve may be a little stiff.
2. Remove the pressure hose of the argon cylinder at the rear of the APC
300.
3. Place the hose opening on the drainage pin at the rear of the APC 300 and
press. The hose contains a residue of argon which escapes with a loud
hissing noise.
4. The union nut of the pressure reducer should only be unscrewed to the left
and removed by hand.
1. The pressure reducer should only be screwed onto the new cylinder to the
right by hand.
2. Open the cylinder valve.
3. Put the pressure hose onto the cylinder connection of the APC 300.
Unmounting cylinder
Mounting cylinder
NOTE
The CE 0124 sign is not at the
UL version.
Connecting pressure hoses
Drainage pin
Pressure hose
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