Riello RL 50, Инструкции по установке, использованию и обслуживанию

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Maintenance
9.1 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:
9.2 Maintenance programme
9.2.1 Maintenance frequency
The combustion system should be checked at least once a
year by a representative of the manufacturer or another
specialised technician.
9.2.2 Checking and cleaning
Combustion
The optimum calibration of the burner requires an analysis of the
flue gases. Significant differences with respect to the previous
measurements indicate the points where more care should be
exercised during maintenance.
Pump
The delivery pressure must be stable. The depression must be
less than 0.4 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 piping or the pump.
If the pump is found to be responsible, check to make sure that
the filter is not dirty. The vacuometer is installed upstream from
the filter and consequently will not indicate whether the filter is
clogged or not. Contrarily, if the problem lies in the suction line,
check to make sure that the filter is clean and that air is not enter-
ing the piping.
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.
Combustion head
Check to make sure that all the parts of the combustion head are in
good condition, positioned correctly, free of all impurities, and that no
deformation has been caused by operation at high temperatures.
Nozzles
Do not clean the nozzle openings.
It is advisable to replace nozzles every year during regular main-
tenance operations. The change of nozzle requires the combus-
tion to be controlled.
Filters
Check the following filter boxes:
• on line 1) • in the pump 2) • at the nozzle 3), and 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.
Photocell
Clean the glass cover from any dust that may have accumu-
lated. Photocell 1) is held in position by a pressure fit and can
therefore be removed by pulling it outward forcefully.
9 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 electrical supply from the burner
by means of the main system switch.
DANGER
Close the fuel interception tap.
D482
Fig. 30
Fig. 31
D483