Wolf CGB-75 Maintenance Instructions Manual page 10

Overview of the steps to be taken and maintenance report
No. Step
1 Switch OFF the boiler, emergency stop switch is OFF
2 Close the gas supply valve
3 Remove the casing and the combustion chamber housing
4 Unplug the electrical connections from the fan, sensors and
electrodes
5 Remove the combustion chamber lid upwards
6 Clean the burner, if required
7 Clean the heating water heat exchanger
8 Clean the condensate pan
9 Clean the mixing chamber, if required
10 Check the combustion chamber insulation for damage
11 Check gaskets, and if required, replace them and
lubricate with silicone grease
12 Refill granulate, if a neutralising system is installed
13 Check the protective anode every two years on enamelled
cylinders
14 Assemble the equipment
15 Clean and fill the siphon, install and check for tight fit
16 Descale the DHW heat exchanger, if required
17 Clean the DHW strainer
18 Check the expansion vessel in case of water loss
19 Open the gas supply valve and start the boiler
20 Gas leak test
21 Flue gas leak test
22 Check the ignition
23 Check the interaction with control accessories
24 Flue gas test in emissions test mode
25 Gross flue gas temperature
26 Ventilation air temperature
27 Net flue gas temperature
28 Carbon dioxide content (CO
29 or oxygen content (O
30 Carbon monoxide content (CO)
31 Flue gas loss
Confirm maintenance (company stamp, signature)
10
Overview of the steps to be taken
and maintenance report
)
2
)
2
Report item Report item
O O
O O
O O
O O
O O
O O
O O
O O
O O
O O
O O
O O
O O
O O
O O
O O
O O
°C
°C
°C
%
%
%
%
Report item
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
°C °C
°C °C
°C °C
% %
% %
% %
% %
30 62 556_0709