Automatic fancontrol body i.c.w. KVM

In control box we built in the controlling of the fans, with in the lid a switch automatic/manual use, and, in case of a (drawbar) trailer, a display with controls for the automatic system. On automatic, the system changes the airflow volume on temperature basis. The desired temperature and the minimum and maximum airflow volume is set by the user. The system tries to maintain the desired temperature by efficiently changing the rpm of the fans. This goes without steps. Can the desired temperature not be reached with alteration of rpm, then the cooling or heating system is switched on. On malfunctions, or when it takes to long to reach the desired temperature, or when the difference between actual and desired temperature is too big, the alarm is set: A flashing display and noise in truck cabin, and an sms message to one or more GSM cell phones

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