Potterton Performa 28i, Инструкции по установке и обслуживанию, Страница: 28 / 48

11.0 Servicing the Boiler
28
11.1 Annual Servicing (Cont)
10. Remove the spring clips retaining the air box
side baffle plates. Disengage the tabs on the
baffles from the slots in the fan hood (Fig. 42).
11. Undo the screws securing the fan and hood to
the appliance back panel. Draw the assembly
forwards (Fig. 42a).
12. Undo the screws securing the burner to the
injector manifold. Draw the burner out of the
combustion box, pulling the electrode grommets
from the slots in the combustion box lower panel
(Fig. 43).
13. Disconnect the electrode leads and grommets
from the electrodes. Completely remove the
burner (Fig. 43).
14. Brush any deposits from the injectors. Do not
use a pin or wire to clean them.
15. Brush the burner blades and venturis and
clean the combustion box.
16. Ensure that the heat exchanger fins are clear
of any obstruction.
DHW Filters (Fig. 44)
17. If the flow of domestic hot water is diminished,
it may be necessary to clean the filters.
18. Initially check the cold water inlet tap filter.
19. Turn the tap off. Undo the blanking cap and
remove the threaded bush (Fig. 43a).
20. Extract the filter and rinse thoroughly in clean
water. Reassemble and check the flow. If
required clean the manifold filter as described
below.
21. Undo the filter cartridge from the inlet/return
manifold.
22. Dismantle the cartridge and carefully remove
the flow regulator and filter gauze. Rinse them
thoroughly in clean water and reassemble in
reverse order.
23. Check that the pressure vessel charge is
0.5bar, reassemble in reverse order of
dismantling and recommission.
24. Complete the relevant section of the
“Benchmark” Installation, Commissioning and
Service Record Log Book and hand it back to the
user.
Spring Clip
Fan and Hood
Assembly
Baffle
Tab
Burner
Electrode
Grommets
Fig. 42
Fig. 43
Fig. 44
Cartridge
Body
Filter Gauze
Flow
Regulator
Venturi
Inlet/Return Manifold
Cold Water
Inlet Tap
Blanking
Cap
Threaded
Bush
Fig. 43a
Fig. 42a