Maintenance - Riello RLS 70 Installation, Use And Maintenance Instructions

FLAME INSPECTION WINDOW
(A)
UV CELL
(B)
(C)

MAINTENANCE

NOTES ON SAFETY FOR THE MAINTE-
NANCE
The periodic maintenance is essential for the
good operation, safety, yield and duration of the
burner.
It allows you to reduce consumption and pollut-
ing emissions and to keep the product in a relia-
ble state over time.
DANGER
D484
Before carrying out any maintenance, cleaning
or checking operations:
DANGER
DANGER
Combustion
The optimum calibration of the burner requires
an analysis of the flue gases. Significant differ-
ences with respect to the previous measure-
ments indicate the points where more care
should be exercised during maintenance.
D1182
Flame inspection window
Clean the flame inspection window (A).
Combustion head
Open the burner and make sure that all compo-
nents of the combustion head are in good condi-
tion, not deformed by the high temperatures,
free of impurities from the surroundings and cor-
rectly positioned. If in doubt, disassemble the
elbow fitting.
D1143
Nozzles (light oil)
Do not clean the nozzle openings; do not even
open them. The nozzle filters however may be
cleaned or replaced as required.
It is advisable to replace nozzles every year dur-
ing regular maintenance operations. Combus-
tion must be checked after the nozzles have
been changed.
UV cell
Clean the glass cover from any dust that may
have accumulated. The photo-electric cell 1)(B)
is held in position by a pressure fit and can
therefore be removed by pulling it outward
forcefully.
Current to the uv photocell (C)
Min value for a good work: 70 µA.
If the value is lower, it can depend on:
• exhausted photocell;
• low current (lower than 187 V);
• bad regulation of the burner.
In order to measure the current, use a microam-
meter of 100 A c.c., connected to the photocell,
as in the scheme, with a capacitor of 100 F -
1V c.c. at the same level of the instrument.
Flexible hoses (light oil)
Check to make sure that the flexible hoses are
still in good condition and that they are not
crushed or otherwise deformed.
20
The maintenance interventions and
the calibration of the burner must
only be carried out by qualified, au-
thorised personnel, in accordance
with the contents of this manual and
in compliance with the standards and
regulations of current laws.
Disconnect the electrical supply from
the burner by means of the main sys-
tem switch.
Close the fuel interception tap.