Inspection and maintenance
Condens 7000 F – 6720871560 (2019/11)
42
Fig. 60 Electrical connections on the fan (boiler rating 150-300 kW)
[1]
Electrical connections on the fan, boiler rating 150-300 kW
With boiler rating 75-100 kW:
▶ Undo the union nut on the venturi (
Fig. 59, [3]).
With boiler rating 150-300 kW:
▶ Unscrew the mixture flange by removing the 4 nuts on the venturi
(
▶ Pull out burner (
Chapter 11.7, page 35).
▶ Unscrew the fan by removing the 4 nuts on the mixture manifold
(
Fig. 61 Removing the fan (boiler rating 150-300 kW)
[1]
Hexagon nuts (4x) on the venturi
[2]
Hexagon nuts (4x) on the mixture manifold
11.11.3 Replacing components according to the service life
The following components must be replaced after expiry of the specified
service life.
Table 14 Replacement according to service life
▶ Document replacement of components in the maintenance protocol.
DANGER:
Danger to life through escaping gases!
▶ Always replace the electrode block gasket when replacing electrodes.
▶ Generally, replace damaged gaskets or ones that appear aged.
We recommend replacing the electrode block as part of annual
maintenance.
0010012578-001
1
0010012558-001
1
2
Component
Replace according to specification,
depending on what occurs first
Replace after
service life of x
years
Replace after y
boiler starts
Mixture manifold gasket
(O-ring)
5
–
Heat exchanger cleaning
cover gasket
5
–
Gasket of condensation
catch pan cleaning cover
5
–
Fan including gaskets
10
–
Air/gas ratio control valve
including gaskets
10
500000
or following detection of fault by valve
testing system
Flue gas pressure limiter
10
–
Differential pressure
switch
10
250000
