LiftMaster Model H
LiftMaster Model H Commercial Door Operator is a Logic 5.0 hoisted operator designed for demanding industrial applications. It includes a floor-level chain hoist for easy manual operation during emergencies or power outages. The operator is typically wall-mounted for larger sectional overhead doors with vertical or high lift, and can be mounted to the wall or the front of the hood for rolling doors and grilles. It connects to the door jackshaft to indirectly drive the door, delivering reliable and controlled performance.
BY:
Connectivity
- MyQ® Technology enables secure monitoring and control of your facility door operators and lights using a smartphone, tablet, or computer for greater peace of mind.
- Alerts can be received via email or pop-up (push) notifications, keeping you informed of door activity and status at all times.
Performance
Manual Operation & Emergency Control
- Floor-level chain hoist with electrical interlock provides easy disconnect and manual operation during emergencies.
- 3-Button Control Station with Maintenance Alert System (MAS) for OPEN/CLOSE/STOP functionality.
Control & Programming Features
- Control function selector dial allows easy selection and programming of (7) wiring types, from constant pressure to close to specialized Timer-to-Close.
- Timer-to-Close automatically closes the commercial door after a preset time for added security.
- Mid-stop feature enables partial door opening to a preprogrammed position for energy savings and convenience.
Motor & Drive System
- Continuous-duty, high-starting torque motor with instant reverse and overload protection.
- Capacitors start with a single-phase motor; the motor is removable without affecting limit switch settings.
- Drive reduction system includes a heavy-duty 5L V-belt (first stage) and #48 chain (second, third, and fourth stages) with a #50 output sprocket chain.
Safety & Protection
- Adjustable friction clutch helps protect the door and operator if the door encounters an obstruction.
- Maximum run timer stops or reverses the door if closing time exceeds the expected timeframe.
- Delay-on-reverse circuit prevents abrupt reversal, reducing wear on the door and operator system.
Electrical & Installation Flexibility
- Dual voltage connections allow installers to select the required voltage within phase to meet job-site requirements.
- Voltage is field-selectable at installation via connector placement.
Construction & Durability
- Industrial ball bearings on a 1-inch output shaft.
- Heavy-duty oil-filled bushings on reduction shafts.
- Brake is standard on ¾ HP models and optional on ½ HP.
- NEMA 1 rated electrical box with a heavy-duty 11-gauge steel frame and durable powder-coat finish with pinned shafts.
Operating Speed & Warranty
- Door speed: 8–9 inches per second.
- Warranty: 2 years.
Safety & Security
- Security+® 2.0 Radio Technology - Standard on-board with Logic 5.0 operators, virtually eliminating radio frequency interference. Supports up to (90) 1-button remotes, (30) 3-button remotes, (30) wireless keypads, or an unlimited number of DIP switch remote controls.
- UL 325 Compliance - LiftMaster® Commercial Door Operators fully comply with UL 325 safety standards.
- Entrapment Protection Options - A wide range of entrapment protection devices is available to meet the needs of every commercial application.
- Emergency Disconnect - Allows the door operator to be disengaged from the door for manual lifting during emergencies.
Technical Information
- Control Circuit: 5VDC NEC Class 2 control circuit
- Approximate Shipping Weight: 110 lbs.
Brake Specifications
- For models equipped with brakes, add 2 inches
- Brake is standard on ¾ HP and 1 HP models and optional on ½ HP models
Installation Notes
- On steel-insulated doors, a 24-gauge back panel is assumed
- If a heavier back panel is used, select the next higher HP rating
- For doors 22 ft. wide × 20 ft. high or larger, contact a LiftMaster Sales Representative
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For doors 22 ft. wide × 20 ft. high or larger, contact a LiftMaster Sales Representative
The LiftMaster Model H is ideal for large sectional overhead doors with vertical or high lift, as well as rolling doors and grilles. It is commonly used in demanding industrial and commercial applications.
Does the LiftMaster Model H support manual operation during power outages?
Yes. It features a floor-level chain hoist with an electrical interlock, allowing safe and easy manual operation during emergencies or power failures.
Can I monitor and control the door remotely?
Absolutely. With built-in MyQ® Technology, you can securely monitor and control door operators and connected lights using a smartphone, tablet, or computer, along with real-time alerts.
What safety features are included with the LiftMaster Model H?
The operator includes an adjustable friction clutch, maximum run timer, delay-on-reverse circuit, emergency disconnect, and complies fully with UL 325 safety standards. It also supports multiple entrapment protection devices.
What motor and drive system does the Model H use?
It is powered by a continuous-duty, high-starting torque motor with instant reverse and overload protection. The heavy-duty multi-stage belt and chain drive system ensures reliable and controlled performance.
Is the LiftMaster Model H flexible for different electrical installations?
Yes. It offers dual voltage, field-selectable connections within phase, allowing installers to easily adapt the operator to job-site electrical requirements.
What is the operating speed and warranty of the LiftMaster Model H?
The door operates at a speed of approximately 8–9 inches per second and comes with a 2-year manufacturer warranty for added peace of mind.