Question about BeamZ S700-Jb

1. does all the cleaning fluid have to go into the tank to clean the fog machine? (the cleaning process takes over 1 hour) 2. the instructions state that the machine must be cleaned after 40 hours. What does the 40 hours refer to? To the time since the last use? Or does the machine have to be cleaned after a total of 40 hours of use? 3. our machine was delivered with a mist liquid already included. According to the instructions, the fogging liquid must be removed from the tank before cleaning and refilled with fogging liquid after cleaning. Can the fogging liquid supplied be used? Is the fog machine actually stored with liquid?