I-non-spring electric damper actuator (ebuye ibizwe ngokuthi "i-non-spring return" noma "i-motorized damper actuator") iyidivayisi esetshenziswa kumasistimu e-HVAC ukulawula ukuma kwama-dampers (amapuleti alawula ukugeleza komoya) ngaphandle komshini wentwasahlobo owakhelwe ngaphakathi. Ngokungafani nama-actuator abuya entwasahlobo, athembele esiphethwini ukuthi abuyele endaweni ezenzakalelayo (isb, ivaliwe) lapho amandla ephela, ama-activator angabuyi entwasahlobo abamba indawo yawo yokugcina lapho amandla enqanyulwa.

Ama-actuator e-Spring Return damper athuthukiselwe ukusetshenziswa kwe-air damper evamile, i-valve ejikelezayo namanye amadivaysi adinga umsebenzi ongaphumeleli. Ngesikhathi sokusebenza okuvamile, i-actuator yavula idivayisi. Esimeni lapho ugesi ucisha, i-actuator ibuyela endaweni yayo yasekuqaleni.