Riello 20162652, Installation, Use And Maintenance Instructions

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37 20162733 GB
Maintenance
7.2.5 Voltage on the QRI sensor
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. 29).

7.2.6 Checking the air and gas pressure on the
combustion head
To carry out this operation it is necessary to use a pressure gauge
to measure the air and gas pressure at the combustion head, as
shown in Fig. 29.
7.2.7 Checking the air and gas pressure on the
combustion head
To carry out this operation it is necessary to use a pressure gauge
to measure the air and gas pressure at the combustion head, as
shown in Fig. 29.
7.3 Checking the position of the rpm sensor
To calibrate the rpm sensor, proceed as follows:
loosen the screws 3) 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. 30)
1 - Rpm sensor
2 - Disc
3 - Screw
4 - Scale
0...10 V
Ri > 10 M
:
X10-02 / 6
X10-02 / 4
X10-02 / 2
LMV...
+
Fig. 27
D9174
20076586
Checking
air pressure
Checking
gas pressure
Fig. 28
20076586
Checking
air pressure
Checking
gas pressure
Fig. 29
2
1
3
3
2
4
20082216 Fig. 30