ENG
To remove the heat exchanger, proceed as follows:
• disconnect the cables from the burner electrodes (the detection electrode must be disconnected from the burner control
board, see the A - Fig. 1.b);
• remove the fan manifold by removing the screws B (Fig. 1.b) and remove the burner combustion head (Fig. 1.c);
A
Fig. 1.b
G
F
Fig. 1.d
• disconnect the cables from the foam detection electrode (A - Fig. 1.d);
• unscrew and remove the locking nuts (B - Fig. 1.d);
• remove the boiler cover (C - Fig. 1.d);
• remove the nuts (D - Fig. 1.d) from the side of the burner;
• take out the heat exchanger (E - Fig. 1.d) and wash it using a 20% acetic acid solution, removing scale using implements that
do not scratch the lining (e.g. wood or plastic). At the end of the process, rinse thoroughly.
• disconnect the power supply cable and all the pipes/hoses connected to the electric pump and the cover (Fig. 1.d);
• undo the panel fastening nuts and remove it, making sure not to damage the gasket (G - Fig. 1.d);
• unscrew and remove the screws H (Fig. 1.d) to release the steel fi lter (I - Fig. 1.d) and wash it in a 20% acetic acid solution;
• using a wooden or plastic scraper, scrape the inside of the vaporiser chamber.
1.2
Cleaning the burner
The burner must be checked by authorised and qualifi ed personnel once or twice a year, according to use.
8
B
Fig. 1.c
B
E
H
I
A
C
D
gaSteam +0300123ML rel. 1.0 - 03.12.2021