Samson 3374 Mounting And Operating Instructions

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Resistance transmitters22 EB 8331-3 EN7.1.2 Retrofitting (when limitcontacts are already in-stalled)1. Unscrew screws on housing cover andtake the cover off the actuator.2. Move the actuator stem to the end positiondepending on the fail-safe action "Actu-ator stem extends" or "Actuator stem re-tracts”. Refer to section 5.3. Unscrew fastening screws. Push the ac-tuator board (12) from its guiding to theright. Remove the actuator board and re-place it with a board carrying resistancetransmitters.4. Push the new actuator board into its guid-ing. Make sure that the gears are proper-ly engaged. Fasten the board usingscrews.1212 Actuator boardFig. 8: Retrofitting resistance transmitters (when limit contacts are already installed)