FEATURES
| The model LiftMaster APT is a low-profile apartment house door opener, as manufactured by The Chamberlain Group, Inc. and is for use on standard lift sectional doors. It is rated for more than 100 cycles per day. |
Features:
- Trolley type door opener
- Voltage/phase: 115/230 V 1 phase
- Horsepower: ½ HP
- Motor
Continuous-duty high-starting torque motor with instant reverse and overload protection. Available in 1/2 HP; single-phase capacitor start motors. Removable without affecting limit switch settings. - Auto-reconnect trolley assembly
Automatic reconnect trolley assembly with nylon inserts in case of manual operation. - Quiet operation
Quality resilient-mount motor, nylon inserts on trolley assembly and nylon quiet-gliding chain guides on rail spacers provide quiet, smooth operation. - Low-profile design
Low-profile design can be ceiling-mounted for low headroom applications. - Wiring type
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. - Control circuit
5V DC NEC Class 2. - Brake
Heavy-duty solenoid-actuated brake. - Drive reduction
First-stage heavy-duty 4L V-belt; second and third stages #41 chain; output on trolley #48 chain. - Bearings
Industrial ball bearings on output shaft; heavy-duty, oil-filled on reduction shafts. - Friction clutch
Adjustable friction clutch helps protect against major damage to door and opener should the door meet an obstruction. - Rail assembly
High-strength dual L-rail track and quick-mount header bracket which provides fast, swing-up installation. - Construction
NEMA 1 type electrical box, heavy-duty 11-gauge steel frame with durable powder coat finish, all reduction sprockets drilled and pinned to shafts. - Delay-on-reverse circuit
1.5-second delay-on-reverse circuit to prevent premature door and opener wear. - Timer-to-close
Automatically closes the door – programmable in 1-second or 15-second increments. - Mid-Stop
Stops the door at programmable mid-stop during open travel. - Maximum run timer
Signals the door to reverse or stop if the 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.
- Additional headroom required: 4″










