❒ Loosen the twin wire clamp with pliers and remove the measurement line from the
under-pressure sensor cartridge
❒ Clean the measurement line with gentle compressed air
➥ WARNING! Do not direct compressed air into under-pressure sensor cartridge!
This could damage it!
❒ After cleaning, refit the measurement line
Depending on the design, port “-” (A) or “HI” (B)
5.4.3 Cleaning the Lambda probe
Rear flue pipe connection (optional)
❒ Remove the back insulating cover and thermal insulation upwards
❒ Remove the back insulating cover by pulling it up and fold the thermal insulation
down
❒ Loosen the spring bolts and open the front cover of the heat exchanger
Up to boiler type 60:
Starting at boiler type
80:
5
Servicing the system
Maintenance work by technicians
62
Froling GesmbH | A-4710 Grieskirchen, Industriestraße 12 | www.froeling.com