Maintenance; Cleaning The Heat Exchanger, Burner And Condensate Trap - Buderus Logamax Plus GB142-24 Installation Instructions Manual

12 Maintenance

CAUTION
There is no need to lubricate the combustion
motor as it is permanently lubricated.
 Switch off the heating system using the main switch.
 Close the gas shut-off valve.
 Remove the casing.
12.1 Cleaning the heat exchanger, burner
and condensate trap
CAUTION
To avoid a short circuit.
– Do not spray the cleaning agent onto the
burner, the hot surface ignitor, the ionization
electrode or other electric components.
 Dismantle the hot surface ignitor and the ionization elec-
trode.
 Loosen the fastening nuts (fig. 43, pos. 1).
 Remove the earth cable (fig. 43, pos. 2).
 Remove the retaining plate.
 Pull the hot surface ignitor (fig. 43, pos. 3) and the ioniza-
tion electrode (fig. 43, pos. 4) out of the heat exchanger.
 Loosen the threaded connection to the gas control valve
(fig. 44, pos. 1) and pull the plug (fig. 44, pos. 2) from the
gas valve terminal block.
 Pull the plug from the fan unit (fig. 44, pos. 3).
Logamax plus GB142-24/30/45/60 - We reserve the right to make any changes due to technical modifications!
Fig. 43 Removing the hot surface ignitor and the ionization
electrode
5
4
1
Fig. 44 Removing the connections
Maintenance 12
5
4
3
2
49