43
20182250
GB
Maintenance
Voltage on the sensor flame
Minimum value for correct operation: 3.5V DC (value on AZL dis-
play at about 50%).
If the value is lower, it could be due to:
–
sensor not positioned correctly
–
low voltage (lower than 187V)
–
bad regulation of the burner
In order to measure, use a voltmeter with a 10V DC scale con-
nected as in the diagram (Fig. 40).
7.2.4
Checking the position of the rpm sensor
To calibrate the rpm sensor, proceed as follows:
–
loosen the screws 3)(Fig. 41) rest the sensor on the disc
extension 2);
–
take the scale 4) as a reference, pull back the rpm sensor by
about a notch so that the distance from the disc extension 2)
is about 2 mm.
Key (Fig. 41)
1
Rpm sensor
2
Disc
3
Screw
4
Scale
7.2.5
Safety components
The safety components should be replaced at the end of their life
cycle indicated in the Tab. Q.
The specified life cycles do not refer to the warranty terms indi-
cated in the delivery or payment conditions.
Tab. Q
Pump
The delivery pressure must comply with the table on page 31.
The depression must be less than 0.45 bar.
Unusual noise must not be evident during pump operation.
If the pressure is unstable, or 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 measure per-
mits the cause of the anomaly to be traced to either the suction
piping or the pump.
If the problem lies in the suction line, check the filter is clean and
that air is not entering the piping.
Nozzles
It is advisable to replace nozzles once a year during periodical
maintenance.
Do not clean the nozzle openings.
Hoses
Check that these are in good conditions.
Fuel tank
Approximately every 5 years, suck any water on the bottom of the
tank using a separate pump.
0...10 V
Ri > 10 M
:
X10-02 / 6
X10-02 / 4
X10-02 / 2
LMV...
+
D9174
Fig. 40
2
1
3
3
2
4
20082216
Fig. 41
Safety
component
Life cycle
Flame control
10 years or 250,000
operation cycles
Flame sensor
10 years or 250,000
operation cycles
Gas valves (solenoid)
10 years or 250,000
operation cycles
Pressure switches
10 years or 250,000
operation cycles
Pressure adjuster
15 years
Servomotor (electronic cam)
10 years or 250,000
operation cycles
Oil valve (solenoid)
10 years or 250,000
operation cycles
Oil regulator
10 years or 250,000
operation cycles
Pipes/ oil fittings (metallic)
10 years
Flexible hoses (if present)
5 years or 30,000
pressurised cycles
Fan impeller
10 years or 500,000 start-ups
LIGHT OIL OPERATION
Summary of Contents for RLS 310/EV O2 MX
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