Riello P 140 P/NA, Installation, Use And Maintenance Instructions

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4499
9
GB
*
flow not allowed for a correct combustion.
5.2.2 PRESSURE REGULATOR ADJUSTMENT
Pressure variation (pressure gauge 1, fig. 10) modifies oil output flowing out the nozzle.
To calibrate the oil range within which the nozzle should operate, adequately adjust the fuel maximum and minimum pressure ac-
cording to the nozzle chart.
-
Once the nozzle is installed, remove the servomotor protection cover (12, fig. 1), and start up the burner.
- As soon as it is started, cut off voltage to the servomotor by opening the connector located on the switchboard (19, fig. 1). In this
way the burner operates at minimum flow.
- Release the variable profile cam of the servomotor by pressing the reset button (5, fig. 8).
- Manually make the variable profile cam firmly connected to the eccentric (7, fig. 10) rotate slowly and check the pressure variation
on the pressure gauge (1, fig. 10). Pressure and nozzle delivery are minimum when the servomotor is at 20°. Pressure and nozzle
delivery are maximum when the servomotor is at 130°.
Correct pressure on the return line by varying the eccentric (7, fig. 10) and the nut with the lock nut (5, fig. 10).
5.2.3 PRESSURE REGULATOR
To calibrate the eccentric (7):
remove the casing (8), undo the screws (6), operate on the screw (3) until the desired eccentricity is obtained. Turn the screw (3) to
the right () to increase eccentricity and also the difference between the nozzle maximum and minimum flow. Turn the
screw (3) to the left () to reduce eccentricity and also the difference between the nozzle maximum and minimum flow.
CODE
Nozzle
15 AG 45°
Viscosity
at nozzle
Oil density
Oil flow
kg/h
Air/steam
consumption in kg/h
Recommended
air/steam
pressure
cSt
kg/hm
3
6 bar 5 bar 4 bar 3 bar 2 bar
High
flame
Low
flame
bar
3
045
008
250
5 850 468 410 340 250 120 10.4 35.2 2
10 875 396 340 270 180 80 24.5 57.1 3
20 900 315 252 175 110 N/A* 42.4 81.9 4
30 925 285 228 150 85 N/A* 46.8 90.5 4
30
450
09
275
5 850 514 430 360 270 130 11.5 38.6 2
10 875 436 365 300 190 85 27 62.8 3
20 900 346 277 193 120 N/A* 46.7 90 4
30 925 313 250 175 95 N/A* 51.6 99.5 4
304
5010 300
5 850 560 470 400 300 150 11.5 38.6 2
10 875 476 410 340 200 90 29.3 68.5 3
20 900 378 302 210 130 N/A* 51 98.2 4
30 925 342 273 190 100 N/A* 56.3 108.6 4
3
4 5
6 7
8
1
2
1 - Delivery pressure gauge
2 - Air/steam pressure gauge
3 - Eccentric adjusting screw
4 - Piston snap ring
5 - Piston calibration nut and lock nut
6 - Eccentric locking screws
7 - Variable eccentric
8 - Casing
Fig. 10
D3699