The direct drive operator consists of a DC electric motor directly coupled to a hollow shaft (30:1 reduction) worm gear reducer designed to install over keyed door shaft.
Continuous duty 1 HP 90 V DC 1750 rpm motor suitable for
110 to 240 V 1 PH and 60 Hz power supply.
Comes with integral absolute encoder to control the door travel
24 V 5 amps back-up battery pack and 3/8” ratchet socket to
accept and crank for manually operating the door in case of power failure
Programmable wall mountable UL325 compliant NEMA 4X control panel with LCD display and OPEN-CLOSE-STOP buttons on cover
Shutters can be up to 13'- 6 inches wide and 12 feet tall with UL labels Class A B or C while still being able to function as normal counter rolling shutters.
Oversized fire shutters can be manufactured up to 20 feet wide
Model 7500 fire shutters can be installed with either a manual lift external motors a hand crank with or without automatic testing tubular models with the option of automatic testing
Along with UL labels that will automatically close the fire shutters for either 3 1½ or ¾ hours the fire shutters can also be manufactured with smoke protection
Available finishes: Hot-dipped galvanized steel with an optional baked-on gray polyester enamel coating or 304 stainless steel with a number 4 finish flat profile
The viscous speed governor can be set to automatically close the fire shutters at speeds of 6 inches per second up to 24 inches per second complying with NFPA 80 specifications.
Sprockets and chain are replaced in order to accelerate the ops limit shaft to increase the accuracy of the limit system for sectional doors 8ft H or less