many years ago I was cleaning a carpet in a very large property using a Prochem machine ( I have forgotten the name of it),
Any way it was placed in the kitchen I was cleaning the hall carpet and the lady of the house was in another area of the kitchen preparing ingredients for a meal.
I could smell something but thought no more of it because of what she was doing, then the smell grew stronger and something made me go and check the machine, when I got there it was glowing, as the casing was blue you could not see the flames just this glow

inside the water tank

.
The heater element had caught alight ,I quickly switched off the machine and POURED WATER ON IT,

( In my defence I was having a bit of a panic and not thinking straight)
BING BANG BONG.... it went and the element blew apart.
All this time the lady is still cooking ( as I said it was a big property and the kitchen was huge). Everything alright she say's, Yes says me being all cool

Amazingly no fuses blew, nothing tripped in the property so gingerly plugged the machine in again, obviously with out the heater ( I am not a complete idiot

) and off it went and I finished the job she was none the wiser.
That day to this
every bit of kit had a breaker on it.
Bloody marvelous machine, went on for years.
Someone tell me the name of it......Prochem, blue, with folding handle, open solution tank with heater element inside.Only had about 80 psi (I think) . It will drive me made now until I remember or some one tells me.