20027761
24
GB
Installation
Calibration pressure on delivery line
To adjust the delivery pressure, operate on the pump as de-
scribed on pag. 23.
Example:
if you use a 650 kg/h nozzle and you want to obtain power of 6650
kW, the pressure on the pressure gauge 3)(Fig. 24) (maximum
pressure on return circuit) must be about 16.5 bar.
Relevant delivery pressure read on the pressure gauge 2), must
be 20 bar (see Tab. H a pag. 18).
IMPORTANT
The proper setting of the eccentric 8) is possible when its
operation field follows the servomotor operation field (20° ÷
130°): so, that every variation of the servomotor position cor-
responds to a pressure variation.
Never let the piston batter: the stop ring 5) determines the
max. stroke.
If you wish to check the delivery capacity of the nozzle, pro-
ceed as follows:
open the burner according to instructions at pag. 17, place
the nozzle, simulate the start-up and then proceed with the
weighing at the maximum and minimum pressures.
If at maximum capacity of the nozzle (maximum pressure in
the return line) pressure fluctuations are detected on the
manometer 3), slightly decrease the pressure till their com-
plete elimination.
NOTE:
the burner is calibrated from factory with maximum pressure on
the return line of approximately 16.5 bar and delivery pressure of
approximately 20 bar.
5.12.7 Burner calibration
Note
It is advisable to first set the burner for operating on oil and then
for gas.
FIRING
Set switch 1) (Fig. 25) to "MAN".
During the first firing, the burner must generate a noise similar to
the noise generated during operation.
OPERATION
The optimum calibration of the burner requires an analysis of the
flue gases at the boiler outlet and interventions on the following
points:
•
Nozzles
See the information listed on pag. 18.
•
Combustion head
The adjustment of the combustion head already carried out
(pag. 19) need not be altered unless the 2nd stage delivery
of the burner is changed.
•
Pump pressure:
In order to adjust pump pressure, use the relevant screw
5) (Fig. 23). See the information listed on pag. 18.
•
Fan air gate valve
See adjustments pag. 33 (Servomotor).
WARNING
Execute the fuel exchange when the burner is
off.
Fig. 25
D3108
1
2
0 AUTO MAN
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Summary of Contents for RLS 650/M MX
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