WMF 800 Manual page 26

Technician instructions
In normal operation (when heating, when dispensing beverages and steam dispensing),
no water should leak out of the safety valve. Otherwise, there is a fault in the water
metering system for all beverages.
A leaking safety valve must be replaced.
The safety valve may not be opened.
It can only be replaced as a complete unit.
Error without display message
• Fluctuating beverage amounts
© WMF 800 / 900 / 1000 S / 1000 pro S Edition 07/2014 - KMT
Boiler water system
See instructions, error messages, troubleshooting
Part 6
T2-15