Hoist Operators

Commercial Garage Door Openers - Listmaster MH

LIFTMASTER MODEL MH

Model MH is a Medium-Duty Logic hoist operator. It features an adjustable friction clutch, a standard solenoid brake, a high-starting torque motor, a compact design and an emergency chain hoist with an electric interlock.

  • Motor: Powerful 1/2 HP, 115V single phase motor with instant reverse and internal automatic reset thermal overload. Removable without affecting limit switch settings.
  • Operator/Motor Control: Solid-state Medium-Duty circuit board.
  • Control Circuit: 24V NEC Class 2.
  • Emergency Manual Operation: Model MH provides easy emergency manual operation using a floor level disconnect and an electrically interlocked chain hoist mechanism.
  • Brake: Heavy-duty solenoid actuated brake standard.
  • Drive Reduction: First stage heavy-duty 4L V-belt; second and third stages #48 chain.
  • Bearings: Heavy-duty oil-filled bearings.
  • Push Button Station: 3-button station for OPEN/CLOSE/STOP functions is standard for all operators. Controls with 1, 2 and 3 buttons are available.
  • Construction: 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.
  • Radio Receiver: 315MHz radio receiver is integral to the Medium-Duty logic board. Accepts up to 20 Security+® remote controls and unlimited DIP switch remote controls.
  • Friction Clutch: Adjustable friction clutch helps protect against damage to the door and operator should the door meet an obstruction.
  • Warranty: 2-year warranty
Commercial Garage Door Openers - Listmaster MHS

LIFTMASTER MODEL MHS

Model MHS is an 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.

  • Motor: Powerful 1/2 HP, 115V single-phase motor with instant reverse, capacitor start and overload protection. Removable without affecting limit switch settings.
  • Drive Reduction: First-stage heavy-duty 4L V-belt; second and third stages #48 chain.
  • Emergency Manual Operation: Easy emergency manual operation using a floor level disconnect or an electrically interlocked chain hoist mechanism.
  • Operator/Motor Control: Solid-state Medium-Duty Logic circuit board.
  • Control Circuit: 24V NEC Class 2.
  • Radio Receiver: 315 MHz radio receiver is integral to the Medium-Duty Logic board. Accepts up to 20 Security+® remote controls and unlimited DIP switch remote controls.
  • Bushings: Heavy-duty oil-filled bushings.
  • Friction Clutch: Adjustable friction clutch 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.
Commercial Garage Door Openers - Listmaster MGJ

LIFTMASTER MODEL H

Hoist (H) style commercial door operators are optimal for industrial applications. H-style operators include a floor level chain hoist to ease manual operation in an emergency or power outage. The operators are typically mounted to the wall when used with larger sectional overhead doors with vertical or high lift and mounted to the wall or the front of the hood when used with rolling doors and grilles.

  • DUAL VOLTAGE CONNECTIONS
  • FLOOR LEVEL CHAIN HOIST WITH ELECTRICAL INTERLOCK
  • CONTROL FUNCTION SELECTOR DIAL
  • TIMER-TO-CLOSE
  • CONTINUOUS-DUTY HIGH-STARTING TORQUE MOTOR
  • MOTOR REMOVABLE WITHOUT AFFECTING LIMIT SWITCH SETTINGS
  • ADJUSTABLE FRICTION CLUTCH
  • MID-STOP
  • MAXIMUM RUN TIMER
  • DELAY-ON-REVERSE CIRCUIT
  • 3-BUTTON CONTROL STATION WITH MAINTENANCE ALERT SYSTEM (MAS)
Commercial Garage Door Openers - Listmaster DHJ

LIFTMASTER MODEL DHJ

Door Lock Hoist/Jackshaft (DHJ) style commercial door operators are ideal for shopping mall applications with heavier rolling doors and grilles. The operators provide a floor level chain hoist to ease manual operation in an emergency or power outage. The operators include a door lock sensor to prevent damage to the door and operator caused by attempts to automatically open a locked door. The operators are typically mounted to the wall when used with larger sectional overhead doors with vertical or high lift and mounted to the wall, or the front of the hood, when used with rolling doors and grilles.

  • DUAL VOLTAGE CONNECTIONS
  • INTERNAL DOOR LOCK SENSOR
  • FLOOR LEVEL DISCONNECT
  • CONTROL FUNCTION SELECTOR DIAL
  • TIMER-TO-CLOSE
  • CONTINUOUS-DUTY HIGH-STARTING TORQUE MOTOR
  • ADJUSTABLE FRICTION CLUTCH
  • MID-STOP
  • MAXIMUM RUN TIMER
  • DELAY-ON-REVERSE CIRCUIT
Commercial Garage Door Openers - Listmaster GH

LIFTMASTER MODEL GH

Gearhead (GH) style commercial door operators employ lubricated gears for heavy industrial, high cycle applications. GH-style operators include a floor level chain hoist to ease manual operation in an emergency or power outage. The operators are typically mounted to the wall when used with sectional overhead doors with vertical or high lift and mounted to the wall or the front of the hood when used with rolling doors and grilles.

  • DUAL VOLTAGE CONNECTIONS
  • FLOOR LEVEL CHAIN HOIST WITH ELECTRICAL INTERLOCK
  • HEAVY-DUTY WORM GEAR-IN-OIL GEAR REDUCER
  • CONTROL FUNCTION SELECTOR DIAL
  • TIMER-TO-CLOSE
  • CONTINUOUS-DUTY HIGH-STARTING TORQUE MOTOR
  • MOTOR REMOVABLE WITHOUT AFFECTING LIMIT SWITCH SETTINGS
  • MID-STOP
  • MAXIMUM RUN TIMER
  • DELAY-ON-REVERSE CIRCUIT
  • 3-BUTTON CONTROL STATION WITHMAINTENANCE ALERT SYSTEM (MAS)

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