LiftMaster 8550 8550 Manual - Page 34

To Open the Door Manually To prevent possible SERIOUS INJURY or DEATH from a falling garage door: • If possible, use emergency release handle to disengage trolley ONLY when garage door is CLOSED. Weak or broken springs or unbalanced door could result in an open door falling rapidly and/or unexpectedly. • NEVER use emergency release handle unless garage doorway is clear of persons and obstructions. • NEVER use handle to pull door open or closed. If rope knot becomes untied, you could fall. DISCONNECT THE TROLLEY 1 The door should be fully closed if possible. 2 Pull down on the emergency release handle. RECONNECT THE TROLLEY The lockout feature prevents the trolley from reconnecting automatically. 1 Pull the emergency release handle down and back (toward the opener). The door can then be raised and lowered manually as often as necessary. 2 To disengage the lockout feature, pull the handle straight down. The trolley will reconnect on the next UP or DOWN operation, either manually or by using the door control or remote control. NOTICE NOTICE Maintenance EVERY MONTH • Manually operate door. If it is unbalanced or binding, call a trained door systems technician. Check to be sure door opens and closes fully. Adjust if necessary (refer to Adjustment section). Repeat the safety reverse test. Make any necessary adjustments (refer to Adjustment section). EVERY YEAR • Oil door rollers, bearings and hinges. The garage door opener does not require additional lubrication. Do not grease the door tracks. EVERY TWO TO THREE YEARS • Use a rag to wipe away the existing grease from the garage door opener rail. Reapply a small layer of white lithium grease to the top and underside of the rail surface where the trolley slides. • Test the battery and consider replacing the battery to ensure the garage door opener will operate during an electrical power outage. NOTICETo complywith FCC and or IndustryCanada rules(IC), adjustment or modifications of this receiver and/or transmitter are prohibited, except for changing the code setting or replacing the batteryTHEREARENO OTHER USER SERVICEABLEPARTS. Tested to Comply with FCC Standards for Home or office use. Operation is subject to the following tow conditions: (1) this device maynot cause harmful interface, and (2) thisdevice must accept anyinterference received, including interference that may cause undesired operation. THE REMOTE CONTROL BATTERY To prevent possible SERIOUS INJURY or DEATH: • NEVER allow small children near batteries. • If battery is swallowed, immediately notify doctor. To reduce risk of fire, explosion or chemical burn: • Replace ONLY with 3V2016 coin batteries. • DO NOT recharge, disassemble, heat above 212°F (100°C) or incinerate. To replace the batteries, remove the two screws and open the remote control housing. Push the battery out of the holder for removal. Insert replacement batteries positive side up (+). Replace the batteries with only 3V2016 coin cell batteries. Dispose of old batteries properly. Batteries Screws (2) 34