3800 Manual
Page 7
... Opener 1. Check to avoid entanglement. 5 Mount emergency release handle no higher than 6 feet (1.83 m) above floor. 6. Securely tighten both set screws firmly, without damaging the jackshaft. 5. Tighten all mounting bracket hardware. HARDWARE SHOWN ACTUAL SIZE 14-10x1-7/8" Hex Screw WARNING To prevent possible SERIOUS INJURY or DEATH: CAUTION • Concrete anchors...
... Opener 1. Check to avoid entanglement. 5 Mount emergency release handle no higher than 6 feet (1.83 m) above floor. 6. Securely tighten both set screws firmly, without damaging the jackshaft. 5. Tighten all mounting bracket hardware. HARDWARE SHOWN ACTUAL SIZE 14-10x1-7/8" Hex Screw WARNING To prevent possible SERIOUS INJURY or DEATH: CAUTION • Concrete anchors...
3800 Manual
Page 24
...door may be out of balance or the springs may be locked. Pull the emergency release handle. Power lock makes noise when operating. • Call Liftmaster® dealer for 5 seconds after adjustments. 9. The garage door opens and closes by its springs. Is it rotates. • Check that all ...point of the opener, door may be able to 20 times without power. 13. Close the door and use the emergency release handle to the jackshaft. Open and close : • Check cable tension monitor. • If the opener lights blink, check the safety reversing sensor. A properly balanced...
...door may be out of balance or the springs may be locked. Pull the emergency release handle. Power lock makes noise when operating. • Call Liftmaster® dealer for 5 seconds after adjustments. 9. The garage door opens and closes by its springs. Is it rotates. • Check that all ...point of the opener, door may be able to 20 times without power. 13. Close the door and use the emergency release handle to the jackshaft. Open and close : • Check cable tension monitor. • If the opener lights blink, check the safety reversing sensor. A properly balanced...