Slow-Speed Hoist Operator for Rolling Sheet Doors Model MHS is a Medium-Duty Logic slow-speed hoist operator for rolling sheet doors. It features a high-starting torque motor with overload protection adjustable friction clutch a compact design and an emergency chain hoist with an electric interlock. MEDIUM-DUTY LOGIC TECHNOLOGYA UL325-2010 compliant Medium-Duty Logic programmable integrated circuit board Built-in 3-channel 315MHz radio receiver accepts up to 20 Chamberlain Security or unlimited DIP switch remotes. 3-button remotes can be programmed for OPEN/CLOSE/STOP operation Programmable C2 or B2 wiring options (B2 requires CPS-U CPS-UN4 or CPS-EI) Integrated Timer-to-Close (TTC) allows programming from 5 to 60 seconds in 5-second increments. Allows for timed automatic door closure after the door reaches the full open position (Requires monitored safety devices, with CPS-U CPS-UN4 or CPS-EI) Integrated 90-second maximum run timer UL325-2010 Monitored Entrapment Capability Monitored protection against transient overvoltage conditions 3-button control station included STANDARD FEATURES Motor: Powerful 1/2 HP 115V single-phase motor with instant reverse, capacitor start and overload protection. Removable without affecting limit switch settings. Friction Clutch: Adjustable, helps protect against major damage to door and operator should the door meet an obstruction. Construction: NEMA 1 type electrical box heavy-duty 11-gauge steel frame with durable powdercoat finish all reduction sprockets drilled and pinned to shafts. Push Button Station: 3-button station for OPEN/CLOSE functions is standard for all operators. Controls with 1 2 and 3 buttons are available. Warranty: 2-year warranty.
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