MINIMUM CAPACITY ADJUSTMENT OF THE BURNER
Position the selector, situated on the control panel, on position 2 and proceed as follows:
Adjustment the minimum light oil flow rate (see figure, Nozzle diagram):
- using a suitable allen key, change the position of the cam guide blade; screwing the cam in, the light oil
flow increases, while unscrewing it, it decrease.
Adjustment the minimum air flow rate (see figure, detail 1):
- loosen the Allen screw on the air damper clamp;
- turn the air damper until you reach the correct air flow, as established by analyzing
the combustion process.
- tighten the Allen screw in place once again.
MAXIMUM CAPACITY ADJUSTMENT OF THE BURNER
Position the selector, situated on the control panel, on position 1 and proceed as follows:
Adjustment the maximum light oil flow rate (see figure, Nozzle diagram):
- using a suitable allen key, change the position of the cam guide blade ; screwing the cam in, the light oil
flow increases, while unscrewing it, it decrease.
Adjustment the maximum air flow rate (see figure, detail 2):
- loosen the nut holding the air damper transmission rod;
ADJUSTMENT THE INTERMEDIATE BURNER CAPACITIES
Using the selector, start the servomotor (closing or opening) and position on 0 to stop the stroke; the adjustment is
made as outlined below. Repeat the operation for the other cam points.
Adjustment the intermediate light oil flow rates (see figure, detail 3):
- using a suitable Allen wrench, change the position of the cam guide blade; if you screw it
down, the flow rate is reduced; if you unscrew it, the flow rate increases.
The diagram illustrates the fuel feeding system of these types of burners, which incorporates a
by-pass nozzle with oil flow regulation on its return pipe. The oil supply is varied by acting on
the nozzle through the pressure in the return line. Max. oil supply is therefore reached when
the pressure in the pump line is about 22 bar and the return line is fully closed; min. oil supply
when the return line is fully open. Relevant pressure readings in the return line are as fol-
lows:
Pump pressure 22-25 bar.
Max Burner output, return oil pressure:
FLUIDICS nozzle : 16 ÷19 bar.
BERGONZO nozzle : 20 ÷24 bar.
Min Burner output, return oil pressure:
FLUIDICS nozzle : 6 ÷9 bar
BERGONZO nozzle : 4 ÷8 bar
OIL DELIVERY ADJUSTMENT
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420010351103 Maior P 500/600 PR
EN