Bosch 7736 702 194, Инструкция по установке и обслуживанию, Страница: 35 / 52

Inspection and maintenance
35 Condens 7000 WP – 6721841195 (2022/01)
10.7 Cleaning the condensation catch pan
If the siphon is soiled, check and clean the condensation catch pan as
necessary.
▶ Open the 2 quick-release fasteners.
Fig. 43 Open the snap fasteners of the condensation catch pan
▶ Remove the condensation catch pan.
Fig. 44 Remove the condensation catch pan.
▶ Clean the condensation catch pan.
▶ Insert new gasket in the condensation catch pan.
▶ Place the condensation catch pan under the heat exchanger.
▶ Push the condensation catch pan so it rests seamlessly against
the exchanger.
▶ Close the snap fasteners.
▶ Reassemble all parts in reverse order.
▶ Start up the boiler.
10.8 Resetting the Maintenance type
Resetting the set Maintenance type starts the new maintenance interval.
▶ Open the menu Reset (

table 15, p. 31).
▶ Reset the parameter Service display.
10.9 Measuring the gas pressure
▶ Measure the gas working pressure (

§ 8.5, p. 23).
▶ Make a note of the value in the maintenance protocol (

§ 10.17, p.
38).
10.10 Measuring of CO and CO
2
▶ Measure the CO content and the CO
2
percentage (

§ 8.6, p. 24).
▶ Make a note of the values in the maintenance protocol (

§ 10.17,
p. 38).
10.11 Measuring the gas/air ratio
▶ Measure the gas/air ratio (

§ 8.7, p. 24).
▶ Make a note of the value in the maintenance protocol (

§ 10.17, p.
38).
10.12 Measuring the ionisation current
▶ Read off the ionisation current on the display (

§ 8.8, p. 24).
▶ Make a note of the value in the maintenance protocol (

§ 10.17, p.
38).
-or-
▶ If the value is less than 2

A: replace the ignition and flame sense
electrode (

§ 10.16.2, p. 36).
10.13 Check the flue gas backflow preventer
If a positive pressure cascade system has been mounted on the
boiler, the backflow preventer must be checked.
▶ Open the inspection aperture via the backflow preventer.
▶ Check the backflow preventer for wear, damage or pollution and
replace if necessary.
▶ Fill the backflow preventer with water if necessary.
▶ Close the inspection aperture of the backflow preventer.
10.14 Check the (flue) gas tightness
▶ Check the tightness of all gas-carrying components (

§ 8.9, p.
25).
▶ Visually inspect the supply air and flue gas routing and check for
tightness and correct installation/brackets.
▶ Check whether the siphon is filled with water and fill if required (

§
10.6, p. 34).
10.15 Check for correct operation
▶ Check the tightness of all couplings.
▶ Check the operating pressure and top up if required.
In doing so, take the water quality into consideration (

§ 5.3, p.
12).
▶ Check the settings of the boiler (

§ 9.4.2, p. 26).
▶ Complete the inspection and maintenance protocol (

§ 10.17, p.
38).
▶ Close the front panel.
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