• If the pressure is too low, increase the pre-charge with nitrogen.
• Measure the pressure again.
• Repeat this procedure until the pre-charge is correct.
3. Install the plug and the guard.
4. Open the water supply.
5. Examine the seal for leaks.
Maximum water absorption
Consult the technical documentation for the correct calculation.
Maintenance and service
Keep this manual close to the expansion vessel. Flamco provides a 5-year warranty
on the condition that the Airfix expansion vessel is serviced by a qualified installer
each year. The annual service must be documented by the installer carrying out the
maintenance on the relevant pages at the end of this manual.
If water disappears through the safety valve, it is possible that the pre-charge is too low.
Check this in the following manner:
1. Close the water supply.
2. Drain the boiler until the pressure is 0 bar.
3. Check the pre-charge.
4. Increase the pre-charge with nitrogen.
Make sure that the pre-charge is not higher than the maximum working pressure. If the
expansion vessel cannot be pressurized, it is possible that the membrane has a leak. You
must then replace the expansion vessel. See point : 4. De-installation.
4. De-installation
1. Close the water supply
(K)
.
2. Drain the pressure from the system.
3. Remove the guard
(L)
and the plug
(M)
.
4. Push on the inner valve
(S)
to drain the pressure
(P)
from the expansion vessel.
5. Unscrew the expansion vessel
(A)
and remove the flow distributor
(D)
.
Caution
The water in the expansion vessel may be hot!
Caution
A full expansion vessel is heavy!
Environment
Observe the local regulations when you dispose of the expansion vessel.
5
ENG
