Function:
Two temperature fuses Tf1 and Tf2 are part of the trigger. In case that the ambient temperature outside the duct is more than +72 °C the temperature fuse Tf1 triggers. If the temperature inside the duct is more than +71 °C the temperature fuse Tf2 triggers. If Tf1 or Tf2 is switching off the power, the circuit to the actuator is irreversibly cut. The spring return of the actuator moves the damper into its safety position.
Performance control:
A performance control for safety operation of the damper is possible with push button of the trigger. The function of the temperature fuses Tf1, Tf2 can be simulated in this way.
Electrical wiring:
The temperature trigger must be connected directly to the actuator. Remove the plastic cover and put the plug in the socket and screw tight.
Short circuit monitoring:
The ExPro-TT-… is continuously monitored by the actuator. If a short circuit is detected in the wiring the actuator travels back to its safety position.
THE DIFFERENT AVAILABLE VERSIONS ARE DETAILED IN THE DATA SHEET
