49
to the enabling of the water pressure
switch and stops the boiler, it is possi-
ble to restart it by resetting the plant
pressure to 1-1.2 bar.
The sy s t em pr essur e is checked
through the hydrometer mounted on
the heating delivery tube (16 fig. 2).
3.2.4 Turning OFF boiler
(fig. 6)
To turn off the boiler, cut off the voltage
by pressing the mains switch (1).
Close both the gas-feed pipe tap and
the water tap if the boiler remains
inoperative for a long period.
3.3 REGULAR
CLEANING
Maintenance of the boiler should be
carried out annually by an authorised
service engineer.
Disconnect the boiler from the elec-
trical supply before servicing or main-
tenance is carried out.
3.3.1
Smoke side boiler
(fig. 7)
To carry out cleaning of the smoke pas-
sages remove the screws that fix the
door to the body of the boiler and with
the special cleaning brush clean the
internal surfaces and the smoke evac-
uation tube well, removing any
RONDO' 3/4 OF
ESTELLE 3/4 OF
RONDO' 5/6 OF
ESTELLE 5/6 OF
Fig. 7
ESTELLE B4 INOX BF TS
ESTELLE B5 INOX BF TS
