Lauda ECO Silver E 4 S Operation Manual page 35

Draining and changing the heat transfer liquid
Completely drain the bath, external consumers, accessories and hose connections and flush or clean them (e.g. with new
heat transfer liquid).
Caution!
Caution!
10/2019 i
Switch off the thermostat and withdraw the mains plug.
–
Allow the device and heat transfer liquid to cool down to or warm
–
up to room temperature.
1
Push a hose onto the bath drain point.
–
Drain the heat transfer liquid by opening the drain tap at the back
–
of the device.
1 Drain tap, cooling thermostats
2 Drain tap, heating thermostats
2
Contact with hot / cold heat transfer liquid
Scalds, frostbite
Bring heat transfer liquids to room temperature before

draining.
Make sure that the drain tap is closed after draining.

Delay in boiling and thermal decomposition due to liquid residues
Burns, scalds, development of harmful vapors
Remove all old heat transfer liquid completely from the bath,

external consumers, accessories and hoses. Flush and clean
them with new heat transfer liquid.
ECO Silver 35 / 124