7.4.2.
Replacing the non-return valve
Replace the nonreturn valve when faulty or when the maintenance kit
contains one. To do this, proceed as follows:
1. Remove the air inlet flue on the venturi.
2. Loosen the union on the gas block.
3. Remove the plugs from the fan.
4. Remove the plugs from the gas block.
5. Dismantle the fan.
6. Completely remove the fan/mixing elbow unit.
7. Replace the non-return valve located between the mixing elbow
and the fan.
8. To re-assemble, perform the above actions in reverse order.
7.4.3.
Assembling the boiler
1. Follow the procedure in reverse to re-assemble all of the
components.
CAUTION
During inspection and maintenance operations, always
replace all gaskets on the parts removed.
2. Fill the siphon with water.
3. Put the siphon back in place.
4. Carefully open the main water valve, fill the installation, vent it and,
if need be, top it up with water.
5. Check the seals on the gas and water connections.
6. Switch the boiler back on.
After a service complete the checklist.
¼
See chapter: "Checklist for periodic inspection and
R000342-A
1
3
4
2x
5
7
6
8
2
T002874-C
7. Checking and maintenance
Quinta Pro 30 - 45 - 65 - 90 - 115
70
250413 - 123157-03
