N4GH503L5LL2 NEMA 4 Gearhead Hoist Operator w/ Auxiliary Switch Modification, 230/460V, 3HP

Logic 5.0 gearhead hoist commercial door operators employ lubricated gears for heavy industrial, high-cycle applications. These operators include a floor-level chain hoist for easy manual operation during an emergency or power outage.

Auxiliary Limit Switch - Wire Leads Modification (M62 / 90-9210MOC Open and Close)
Provides two limit switches, for use by others, to control auxiliary devices such as lights, heaters, dock levelers, or other equipment. The switches can be used to turn on or off such equipment when the door is fully opened or fully closed. Each switch is SPDT (Form C), rated at 10 Amps at 125/250 VAC, and provided with three wire leads for wire-nut connection to the field wiring.

Nema 4 Watertight / Oiltight / Dust-Tight Modification (M103)

• Provides more complete protection against water spray, oil and other fluids than the Damp Environment Modification (M102). Includes a TEFC motor (M100), Watertight/Oiltight Control Enclosure (M101), Watertight/Oiltight 3-Button Control Station, nickel-plated chain and a Dynamic Brake replacing the solenoid brake. See (M5) Dynamic Brake Modification for a description of this brake. This allows the brake to also be contained in a Watertight/Oiltight Enclosure. A Delay-on-Reverse Circuit (M60) is included with this modification. Must be factory installed. 
• IMPORTANT: Must identify handing of drive sprocket and hoist.
• NOTE: All door operators with this modification include CPS-UN4 Photo Eyes. 

Connectivity

• MyQ® Technology enables you to securely monitor and control your facility door operator and lights from your smartphone, tablet, or computer for greater peace of mind.
• Alerts can be received as email or pop-up (push) notifications.

• Heavy-duty worm-gear-in-oil reducer delivers performance for heavy industrial, high-cycle applications.
• Floor-level chain hoist with electrical interlock provides easy disconnect and manual operation in an emergency.
• Control function selector dial allows easy selection and programming of seven wiring types—from constant pressure to close, to specialized Timer-to-Close functionality—to meet end user needs.
• Timer-to-Close conveniently and confidently closes the commercial door automatically after a predetermined time for added security and peace of mind.
• Mid-stop enables partial door opening to a preprogrammed position for energy savings, time savings, and convenience.
• Dual voltage connections increase flexibility by enabling the installer to select the required voltage within phase to meet job-site requirements. Within phases, voltage is selectable at installation with the placement of a connector.
• Continuous-duty high-starting torque motor with instant reverse and overload protection. Capacitor start with single phase, removable without affecting limit switches.
• Maximum run timer reverses or stops the door if closing time exceeds expected limits, reducing potential damage to door and operator.
• Delay-on-reverse circuit prevents abrupt reversal of door, minimizing wear on components.
• 3-Button Control Station with Maintenance Alert System (MAS).
• Drive reduction: 45:1 first stage using heavy-duty gears running in oil bath, cast-iron housing, and “all-climate” synthetic gear oil for improved low-temperature performance; #50 output sprocket chain.
• Bearings: sealed roller bearings in gear reducer.
• Brake: standard on all GH door operators.
• Construction: NEMA 1-rated electrical box, heavy-duty 11-gauge steel frame with durable powder-coat finish. All reduction sprockets are drilled and pinned to shafts.
• Door speed: 8–9 in. per second.
• Warranty: 2 years.

Safety

• Security+ 2.0™ radio receiver is standard on Logic 5.0 operators, virtually eliminating radio frequency interference.
• Accepts up to 90 one-button or 30 three-button remote controls, plus up to 30 wireless keypads or an unlimited number of DIP switch remote controls.
• LiftMaster® Commercial Door Operators comply with UL 325 standards.
• LiftMaster offers a variety of entrapment protection devices for every commercial application.
• Emergency disconnect allows manual lifting of the door in case of power loss or emergency.