LiftMaster® MH

The MH model is a medium‑duty hoist operator, as manufactured by The Chamberlain Group. and is for use on vertical or high lift sectional doors or small rolling doors and grilles. It is rated for 12 cycles per hour during peak periods up to 50 cycles / day.

Features:

• Drive system: chain hoist
• Single phase: 115 V
• Horsepower: ½ HP
• Minimum side room required: 18 in (457 mm)
• Solid‑state Medium‑duty logic circuit board.
• High‑starting torque operator with instant reverse.
• Capacitor start on single‑phase
• NEMA 1 type electrical box, heavy‑duty 11‑gauge steel frame with baked‑on powder coat finish, all reduction sprockets drilled and pinned to shafts.
• Motor is removable without affecting limit switch settings.
• Heavy‑duty solenoid brake
• First‑stage heavy‑duty 4L V‑Belt; second and third stages #48 chain
• Heavy‑duty oil‑filled bushings.
• Adjustable friction clutch helps protect against damage to the door and opener should the door meet an obstruction
• Provides emergency manual operation using an electrically interlocked floor level disconnect and chain hoist mechanism.
• Motor overload protection.
• 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
• UL and CSA listed.
• 2‑year warranty.
• NOT compatible with myQ.