Cleaning The Sight Glass In The Boiler Door - Viessmann VITORADIAL 300-T Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps

Cleaning the sight glass in the boiler door

Check the gaskets and hose connection
for leaks.
Checking the mixer for ease of operation and tightness
1. Remove the motorised lever from the
mixer handle.
2. Check the mixer for ease of opera-
tion.
20
(cont.)
3. Check the mixer for leaks. Replace
the O-rings if the mixer leaks.
4. Snap the motorised lever into place.