Pressure Switch Adjustment; Oil Pressure Switch - Riello RL 190/M Installation, Use And Maintenance Instructions

6.4

Pressure switch adjustment

6.4.1

Oil pressure switch

The pressure switch 5)(Fig. 5 on page 12) is adjusted in the
factory at 3 bar. If the light oil pressure reaches this value in the
return duct, the pressure switch stops the burner.
The burner restarts automatically if the pressure goes back to
less than 3 bar after stopping.
If the burner is fed by a loop circuit with a pressure of Px, the
pressure switch must be adjusted at Px + 3 bar.
To adjust the pressure switches, use a tool to operate the
adjustment screw, see Fig. 34.
Start-up, calibration and operation of the burner
29 GB
20079898
Fig. 34
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