Unless the Machine has guarentee's
Hi,
Most high end european appliances come with a leak protection system, usually with one of many various names.
For example, Our old and current dishwasher had a drip pan in the bottom with a float valve, and active monitoring of the water level via rate of flow during the wash, and an electronically metered fill, so once there were 4.5L of water in there, no more would enter regardless of what happened.
When one of the above conditions was triggered, the machine would immediately activate the drain pump, disable the inlet valve, and keep the drain pump running until the water level was at 500ml. The inlet solenoid is mounted at the tap end of the hose, and if the water level in the machine isnt satified in 2 minutes, the water will shut off also.
In that instance, with this those safeguards, I would expect to be able to leave the machine running with no risk of damaging leaks.
If a machine does claim to be water proof and have antiflood protection built in, then I would not say that it is reasonable to expect to be able to safely leave the machine unattended.
For example:
http://www.miele.com.au/products/view_product.asp?typeID=1&subTypeID=19&PID=301&domestic=1
This page under the safety features section
http://www.miele.com.au/products/view_product.asp?typeID=4&subTypeID=29&PID=304&domestic=1
http://www.whirlpool.com.au/Productgroup/Washing/Frontloader/Frontloadfeatures/Frontloadfeatures.htm
http://www.whirlpool.com.au/Productgroup/Dishwashers/Main_features0212.htm#drip
Asko has the 6-fold Aqua Block System
http://www.asko.com.au/ASKO/brandsite/main.cfm?moduleID=10&productID=3877
In short, if the appliance has Active monitoring, then you should expect it to be leak proof, if it doesnt then its something you do at your own risk. Common sense could be a good word.
Regards
Nathan