Doak : You are a significant reseller of LPS. The fact your are a reseller is testmony of the value of steam cleaning.
From what I gather it is almost a "factory" setting ; that is a "ton" of LPS in ,hopefully, a "ton" sold. I feel you are not using as clean a water supply as I would. The reason I say that is that it is a scientific fact using public water supplies always results in a break-down of the steaming unit. That NEVER occurs when water supplies recommend in the Thread(s) are added to the steamer.
I support the use of steaming LPS for resale and I'm glad you are doing such . My advice, use only traditional water boilers. Yours is a business , only water boilers will suffice the profit motive.
The are cheap and withstand abuse without imparting a significant problem to the LP. But, in the future be up front about who/what you are. You not in the same league as we comsumers. I'm sure you understand that & my meaning. I wish you sucess.