Riello RLS 800/EV MX, Installation, Use And Maintenance Instructions

Page: 34 / 88

20010950
32
GB
Maintenance
7.1 Notes on safety for the maintenance
The periodic maintenance is essential for the good operation,
safety, yield and duration of the burner.
It allows you to reduce consumption and polluting emissions and
to keep the product in a reliable state over time. Before carrying out any maintenance, cleaning or checking oper-
ations:
7.2 Maintenance programme
7.2.1 Maintenance frequency
The gas combustion system should be checked at least once
a year by a representative of the manufacturer or another
specialised technician.
7.2.2 Checking and cleaning
Combustion
The optimum calibration of the burner requires an analysis of the
flue gases.
Significant differences with respect to the previous measure-
ments indicate the points where more care should be exercised
during maintenance.
Combustion head
Open the burner and make sure that all components of the
combustion head are in good condition, not deformed by the
high temperatures, free of impurities from the surroundings
and correctly positioned.
Burner
Clean the outside of the burner.
Clean and grease the cam variable profile.
Fan
Check to make sure that no dust has accumulated inside the fan
or on its blades, as this condition will cause a reduction in the air
flow rate and provoke polluting combustion.
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.
Power to photocell QRI
(Fig. 39)
Min value for a good work: 3,5 Vdc (AZL display flame approx.
50%).
If the value is lower, it can depend on:
–
Photocell positioned incorrectly;
– Ow current (lower than 187 V)
– Bad regulation of the burner.
To measure power, use a voltmeter with a 10 Vdc scale, connect-
ed as illustrated on the diagram.
Pump
Delivery pressure must correspond with the table on page 18.
The depression must be less than 0.45 bar
.
Unusual noise must not be evident during pump operation
.
If the pressure is found to be unstable or if the pump runs noisily,
the flexible hose must be detached from the line filter and the fuel
must be sucked from a tank located near the burner. This meas-
ure permits the cause of the anomaly to be traced to either the
suction line or the pump.
If the problem lies in the suction line, check to make sure that the
filter is clean and that air is not entering the piping.
Filters
(Fig. 40)
Check the filtering baskets on line 1) and at nozzle 2) present in
the system.
Clean or replace if necessary.
If rust or other impurities are observed inside the pump, use a
separate pump to lift any water and other impurities that may
have deposited on the bottom of the tank.
7 Maintenance
DANGER
The maintenance interventions and the calibration
of the burner must only be carried out by qualified,
authorised personnel, in accordance with the con-
tents of this manual and in compliance with the
standards and regulations of current laws.
DANGER
disconnect the electricity supply from the burner
by means of the main switch of the system;
DANGER
close the fuel interception tap.
LIGHT OIL OPERATION
0...10 V
Ri > 10 M :
X10-02 / 6
X10-02 / 4
X10-02 / 2
LMV...
+
D9174
Fig. 39
Fig. 40
D2012