Overload Protection; Safety Position; Heating Element; Emergency Manual Override - GF Piping Systems EA15 Mode D'emploi

Instruction manual Design and function

5.3.4 Overload protection

The supply unit of the EA 15 has an overload protection that protects the DC motor and the
power supply from overheating. The overload protection is activated as soon as the load
exceeds the torque range. The actuator motor resumes as soon as the load is in the torque
range and the temperature/current has gone down.

5.3.5 Safety position

During a power outage, the actuator remains in its current position. If the actuator is fitted
with the "fail-safe return unit" accessory, it can automatically move to a predefined safety
position (OPEN or CLOSE), in case of a power outage.

5.3.6 Heating element

The integrated heating element prevents condensation or icing inside the housing. It starts
heating from a preset value. The value depends on the ambient temperature, at which the
actuator is operated, and can be set manually. The default setting is <0 °C / <32 °F. When
the heating element is active, the dot on the 7 segment display is illuminated.

5.3.7 Emergency manual override

The integrated emergency manual override is used to run the actuator manually into another
position. The integrated emergency manual override allows the operation of the actuator to be
maintained for a short time if there is no current applied, e. g. during putting into operation or
during a power outage.
43