The process of cylinder exchange
The exchange of a gas cylinder requires to use a special key bought in a trade point. The key should be suitable for a particular kind of cylinder, e.g. the A key allows to exchange cylinders 11kg, and the B key to exchange cylinders 7,5kg.
Step 1
Buy a key correspond to the kind of the gas cylinder you want to exchange,
Step 2
Find boxes in the device that correspond to the kind of your key.
Step 3
Insert the empty cylinder to the empty box. Use the special mechanical key bought earlier, by turning it in the lock.
Step 4
The blockade securing the door is released and the door may now be moved, thereby securing the deposited cylinder and opening access to the full cylinder.
Step 5
Take out the full cylinder after moving the door.
Next customer
A new client will be able to deposit his/her empty cylinder in the box, which stays open after the previous client.