Combination hand chain or hand crank controlled closing system operator including steel chain or removable hand crank, geared reduction unit and an electric wall mounted close control station. Fire door system closing is activated by melting of fusible link. Maximum closing system speed of 12" per second. System reset procedure is to replace and reset fusible link.

Combination hand chain or hand crank controlled closing system operator including steel chain or removable hand crank, geared reduction unit and an electric wall mounted close control station. Fire door system closing is activated by melting of fusible link. Maximum closing system speed of 12" per second. System reset procedure is to replace and reset fusible link.