Changing the oxygen (or nitrogen) tank

Close the valve on the tank you'd like to replace

Go the the test screen in kcam and set the gas type to the one you want to replace

Turn on the air to purge the line of all pressure before proceeding

Check the gauge to ensure there is no pressure left in the line

Unscrew the gauge assembly on the side of the tank

Screw on the steel cover

Undo the retention strap, then carefully roll the tank to the wet room. This will require some practice

Place it in the correct area for that gas in the wet room and label it as empty using one of the magnetic prints from the HP

Always replace the chain when finished

Roll the new tank into place and reattach the gauges and strap

Purge the air line for ~15 seconds