Riello RL Series Installation, Use And Maintenance Instructions page 54

Flame inspection window (Fig. 27)
Clean the glass whenever necessary.
Flexible hoses
Check to make sure that the flexible hoses are still in good con-
dition and that they are not crushed or otherwise deformed.
Fuel tank
Approximately every 5 years, or whenever necessary, suck any
water or other impurities present on the bottom of the tank using
a separate pump.
Boiler
Clean the boiler as indicated in its accompanying instructions in
order to maintain all the original combustion characteristics in-
tact, especially the flue gas temperature and combustion cham-
ber pressure.
To open the burner (Fig. 28)
Switch off the electrical power.
Remove screws 1) and withdraw the casing 2).
Unscrew the screws 3).
Fit the two extensions 4) supplied with the burner onto the slide
bars 5) (model with 385 mm blast tube).
Pull part A backward keeping it slightly raised to avoid damaging
the disk 6) on blast tube 7).
20111051
Maintenance
D709
Fig. 27
D710
Fig. 28
24 GB
Fuel pump and/or couplings replacement (Fig. 29)
In conformity with figures (Fig. 29)
D1108
Fig. 29