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LiftMaster GT electric garage door opener

GT

Features

The GT model is a heavy industrial-duty trolley door opener, as manufactured by The Chamberlain Group and is for use on standard lift sectional doors. It is rated for 25 cycles per hour constant high loading. In excess of 90 cycles/day.

Trolley type door opener
Voltage/phase:
- Single-Phase: 115 V and 230 V
- 3-Phase: 208 V, 230 V and 460 V, 575 V
Horsepower: available in ½, ¾, 1 and 1 ½ HP
Additional headroom required: 4 in (102 mm)
Required depth: Door height + 48 in
Continuous‑duty high‑starting torque motor with instant reverse.
Thermal motor overload can be easily reset from the 3‑button floor level control station
Removable hinged electrical box cover.
Quiet‑gliding rail spacers.
Single‑or three‑phase, capacitor start on single‑phase.
Motor is removable without affecting limit switch settings.

All operators are factory preset to C2 wiring, providing momentary contact to open and stop, with constant contact to close. Monitored entrapment protection, using approved photo sensors CPS‑U are standard. All other wiring types, B2, T, TS and FSTS, can be selected with the selection of a switch. LiftMaster CPS‑UN4 and CPS‑RPEN4 photosensors or a monitored 4‑wire sensing edge (via a CPS‑EI Edge Interface Card) are optional. Logic 4.0 door openers can only accept UL‑approved LiftMaster CPS‑U, CPS‑UN4, CPS‑RPEN4 or CPS‑EI monitored entrapment protection devices.
10:1 first stage using heavy‑duty gears running in oil bath; cast iron housing; #41 chain second stage; #41 chain on trolley.
Sealed roller bearing in gear reducer.
Heavy‑duty solenoid‑actuated brake.
Adjustable friction clutch helps protect against major damage to door and operator should the door meet an obstruction.
Spring‑loaded disconnect for emergency manual operation.
Motor overload protection.

High‑strength dual L‑rail track with exclusive nylon quiet‑gliding chain guides on rail spacers for quiet, smooth operation.
High‑strength dual L‑rail track with nylon quiet‑gliding chain guides on rail spacers for quiet, smooth operation.
1.5 second delay‑on‑reverse circuit to prevent premature door and operator wear.
The Timer‑to‑Close automatically closes the door - programmable in 1‑second or 15‑second increments.
The mid‑stop stops the door at programmable mid‑stop during open travel.
The Maximum Run Timer signals the door to reverse or stop if closing time exceeds maximum by more than 10 seconds.
Maintenance alert system (5 000 to 10 000 cycles).
UL and CSA listed.
2‑year warranty.

Standard security systems

Your security, our priority!

Security+ 2.0 ^®

Security+ 2.0 ^® radio receiver is standard on-board with Logic 5.0 operators and virtually eliminates radio frequency interference. Accepts up to 90 1‑button or 30 3‑button remote controls plus up to 30 wireless keypads or an unlimited number of DIP switch remote controls

Emergency Disconnect

Manual release in case of power failure.

CPS^® Commercial Protector System^®

CPS‑U photo eyes are shipped with unit. They project an invisible light beam across the garage door opening and automatically reverse the door if anything interrupts the beam while the door is going down. Sensing technology will stop the door from closing if contact is made with a person or object. Alternate entrapment protection devices may be used or added, such as light curtains and optical edge systems.

Warning

Garage doors and garage door openers can be dangerous if not installed and verified by a professional and not used properly. Children must be supervised by an adult when they are inside or in proximity of the garage.