Cooling tower adjusting method and system

An adjusting system comprising:

• sensor devices configured to detect a flow rate value of a liquid in a hydraulic circuit of a cooling tower;
• a solenoid valve positioned or positionable downstream of a collection tank to allow a discharge operation of the liquid;
• a processing unit configured to perform an adjusting method to adjust the discharge operation of the liquid from the collection tank, comprising the steps of:
• checking an activation signal of the discharge solenoid valve of the tank;
• detecting said flow rate value of the liquid flowing between an inlet mouth and a discharge mouth of the collection tank to allow a discharge operation of the liquid contained in the tank,
• wherein said discharge operation is allowed in correspondence of a detection of said flow rate value at least equal to a reference threshold value and wherein said discharge operation is inhibited in correspondence of a detection of said flow rate value that is null or lower than said reference threshold value,
• wherein said solenoid valve is controlled through a signal transmitted by said processing unit so as to inhibit the discharge operation, for a defined period of time, in correspondence of an error condition of said sensor devices.