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| 1. Unscrew the empty cartridge. |
2. Release the remaining gas by softly pushing the gas out of the air cushions. |
3. Turn the screw (included with delivery) in the hole under the holder |
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| 4. Turn the screw with the wrench (included with delivery) until the safety socket comes up |
5. Press the safety ball back in its holder |
6. Move the red hood down to be sure the safety ball is fully connected |
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| 7. Turn the screw back with the wrench an remove the screw and the wrench |
8. MOVE THE RED SLIDE COVER BACK UP (very important, if you don't, the system will not fully operate!) |
9. Insert the new cartridge |
