83
MYDENS
COSMOGAS
8 - MAINTENANCE
B
C
A
020025.01.035
Figure 65
B
A C
020025.01.026
Figure 66
B
A
020025.01.036
Figure 67
8.11 - Removing the air vent valve
When not otherwise specified, refer to Figure 65.
1. - Empty the central heating circuit (section 8.19);
2. - Remove pipe “A” from the air vent valve “B”;
3. - Slide drive bar “C” towards the front;
4. - Slide air vent valve “B” upwards and extract it;
8.12 - Replacing the pump motor
When not otherwise specified, refer to Figure 66.
1. - Empty the central heating circuit (section 8.19);
2. - Disconnect the electric wires from the pump body;
3. - Remove screws “B”;
4. - Extract pump by sliding it outwards;
5. - Replace the pump;
6. - Restore the state of the appliance by reassembling
everything in the reverse order to that used for the
dismantling phases;
7. - Restore the pressure in the central heating system
(section 7.2);
8.13 - Removing the central heating
circuit pressure sensor
When not otherwise specified, refer to Figure 67.
1. - Empty the central heating circuit (section 8.19);
2. - Extract drive bar “A” towards the front;
3. - Slide pressure sensor “B” upwards and extract it;
4. - Restore the state of the appliance by reassembling
everything in the reverse order to that used for the
dismantling phases;
5. - Restore the pressure in the central heating system
(section 7.2);
