FIRE-FIGHTING INSTALLATION AND DRIVE SOURCE OF FIRE-FIGHTING INSTALLATION

摘要

The invention relates to fire-fighting installation comprising a drive sourcefor feeding medium into at least one heat releasing spray head (4), the drivesource comprising a pump unit (5) for feeding liquid into said spray headthrough a supply line (3) which is filled with gas to a standby pressure, agas source (9) for maintaining the standby pressure, and a sensor (2) arrangedto provide a signal for starting the pump unit in response to a changeoccurring in the state of the medium in the supply line. In order to rapidlystart the pump unit (5) of the drive source as a result of a minor flowoccurring in the supply line (3) and in order for the fire-fightinginstallation to be applicable to be used at low temperatures, the sensor is aflow transducer (2) arranged to provide a signal to the pump unit (5), if theflow of gas in said portion of the supply line exceeds a certain predeterminedvalue.