LiftMaster 8550 Support Question
LiftMaster 8550 Support Question
Find answers below for this question about LiftMaster 8550.Need a LiftMaster 8550 manual? We have 1 online manual for this item!
Question posted by bcultrera on February 22nd, 2013
Liftmaster Will Not Stay In Adjustment For Travel Down Or Up
Lately, I adjust my opener to close all the way and go up and stop short of the stop bolt, but it only stays in adjustment for a day or so and then it is hitting the stop bolt and stopping 2 inches short of the garage floor. If I readjust it, it will work fine for a day or so and then it's back to hitting the stop bolt and stopping short of the floor.
Current Answers
Related LiftMaster 8550 Manual Pages
8550 Manual - Page 1
....
.
NOTE: If you are installing the garage door
opener on a one -piece door. www.liftmaster.com The Chamberlain Group, Inc.
845 Larch Avenue Elmhurst, Illinois 60126-1196
Contents
BELT DRIVE GARAGE DOOR OPENER.. 1 PREPARATION 2 ASSEMBLY 4 INSTALLATION 6-13 INSTALL THE DOOR CONTROL.....14-16 INSTALL THE PROTECTOR SYSTEM 17-20 POWER 21-22 ADJUSTMENT 23-25 BATTERY BACKUP 26-27 OPERATION...
8550 Manual - Page 2
...; NEVER try to loosen, move or adjust garage door, door springs, cables, pulleys, brackets or their hardware, ALL of the door. An unbalanced garage door may be installed above the center of which are under EXTREME tension.
• Disable ALL locks and remove ALL ropes connected to garage door BEFORE installation and operating garage door opener to avoid entanglement.
5/32 3/16
5/16...
8550 Manual - Page 4
... garage door opener
NOTE: ONLY use ONLY those bolts/fasteners mounted in the garage door opener
H1 (3)
Hex Screw #8x3/8" (Packed with hex screws (H1).
. operating opener.
1.2 Align the rail and the styrofoam over the garage
door opener sprocket and attach with the sprocket cover)
4
HARDWARE
Mounted in the top of sprocket while
garage door opener.
Place the garage door
opener...
8550 Manual - Page 6
... door. 12. To be caught in garage door or opener mechanisms.
9. Installation
IMPORTANT INSTALLATION INSTRUCTIONS
WARNING
To reduce the risk of installation, test safety reversal system. READ AND FOLLOW ALL INSTALLATION WARNINGS AND INSTRUCTIONS. 2. They could result in plain view on .contact with vehicles to -Close functionality if operating either one -piece door, visit www.liftmaster...
8550 Manual - Page 7
... refer to structural support on the wall upside down if necessary, to -Close functionality if operating either one -piece door, visit www.liftmaster.com for installation instructions.
1.1 Close the door and mark the inside vertical centerline of travel clearance for the top edge of Garage Door
2x4
OPTIONAL CEILING MOUNT FOR HEADER BRACKET
Structural Supports
Level (Optional)
Sectional...
8550 Manual - Page 14
... BOX
are used so the correct wires are connected at
(1.5 m), and away from ALL moving parts of the door at the garage door opener in a later step. can be connected to door travel.
H14 H15
DRYWALL
14 NOTE: Older LiftMaster accessories and third party products are no obstructions to either screw.
7/16" (11 mm)
PRE-WIRED INSTALLATIONS...
8550 Manual - Page 23
...
The programming buttons are used to program where the door will stop . The adjustments allow you program the travel . UP (Open)
DOWN (Close)
PROGRAMMING BUTTONS
UP Button
Adjustment Button
DOWN Button
23 INTRODUCTION
Your garage door opener is adjusted automatically when you to program the travel and cannot be tested. Door MUST reverse on contact with 1-1/2" (3.8 cm) high object (or...
8550 Manual - Page 24
... by a closing garage door. • Incorrect adjustment of safety reversal system. • ANY adjustments are flashing 5 times during the steps for Program the Travel, the programming has timed out.
The door
desired DOWN position
door travels to the programmed UP position, the
will travel limits will begin to page 18).
Adjustment Button. If the garage door opener...
8550 Manual - Page 25
... reversal system MUST be tested every month.
• After ANY adjustments are no more than an inch (2.5 cm), and the garage door opener lights will not move more than 6 inches [15 cm] above the floor), call a trained door systems technician.
3 Test the Protector System
3.1 Open the door. The garage door opener will not close from a remote control if the LED in the path of...
8550 Manual - Page 26
... ANY service or maintenance. • Use ONLY LiftMaster part # 485LM for the green Battery Status LED to start flashing before proceeding to test the
battery. The battery status LED will take 24 hours to the
corresponding terminals on the right side panel of the garage door opener. Channel
Battery Status LED
2.3 Plug in fire...
8550 Manual - Page 28
...WARNING
To reduce the risk of children. ALWAYS keep garage door in sight until completely closed . DO NOT enable the Timer-to garage door opener BEFORE making ANY repairs or removing covers.
14. NO ONE SHOULD GO UNDER A STOPPED, PARTIALLY OPENED DOOR.
6. NEVER permit children to door travel.
4. ONLY activate garage door when it is equipped with an unattended operation feature...
8550 Manual - Page 29
... is initially plugged in the down until the door is fully closed. The lights will stop and reverse to -Close feature automatically closes the door after interruption, or when the garage door opener is compatible with up to provide two-way communication between the garage door opener and MyQ™ accessories. If the door senses an obstruction or is compatible with greater control over...
8550 Manual - Page 30
... be adjusted by accessing the menu and using this feature. The MAS feature MUST be installed in need of the garage door opener from remote controls while still allowing activation from the fully open or close your garage door from the door control and keyless entry. LIGHT BUTTON Press the LIGHT button to turn the garage door opener lights on the garage door opener lights...
8550 Manual - Page 31
... be programmed through a series of remote controls, MyQ™ devices, door controls and keyless entries currently programmed to -Close feature off . opener lights, or a keyless entry.
Refer to stay on . LIGHT SETTINGS: Set duration for sectional doors ONLY): Set the Timer-to operate the garage door opener.
LOCK: Enable/disable lock. FEATURES
Press the navigation button below "MENU...
8550 Manual - Page 32
... to program from the program menu. Remote Controls
Your garage door opener has been programmed at the factory to continue. OR
1
2 3 ABC
DEF
4GHI
5 6 JKL
MNO
7 8 9 PRS
TUV
WXY
*
*
0 QZ
#
0 QZ
#
ENTER
ENTER
?? ??
press to operate with the additional remote controls or visit www.liftmaster.com. Keyless Entry: Enter a 4-digit personal identification number (PIN...
8550 Manual - Page 34
... release handle unless garage doorway is subject to ensure the garage door opener will reconnect on the emergency release handle. Push the battery out of fire, explosion or chemical burn: • Replace ONLY with only 3V2016 coin cell batteries. Batteries
Screws (2)
34 Adjust if necessary (refer to Adjustment section). Do not grease the door tracks.
To reduce...
8550 Manual - Page 35
...(s) flash
obstructed safety sensors
flickering. DIAGNOSTIC UP
CODE
ARROW
DOWN ARROW
SYMPTOM
CAUSE
RESOLUTION
1-1
1 FLASH 1 FLASH
The garage door opener will not close Safety sensors are not Inspect sensor wires for travel module are connected, if wires are shorted or needed. If the sending sensor with self-diagnostic capabilities. If sending
wires may be cut wire...
8550 Manual - Page 36
... sensors
apparent reason while
temporarily obstructed from your door is closing , stops and Obstruction, binding or If your garage door opener and reprogram the remote control(s). These are connected, then replace the travel , refer to the door. These features can be misaligned while the door is binding or sticking, contact a trained door systems technician. My remote control wil not...
8550 Manual - Page 37
... Information
Address repair parts order to your garage door opener while calling. Country Club Rd. If you...door Belt - for 7 foot door
Belt - Repair Parts
Rail Assembly Parts
DESCRIPTION 1 Belt - Tucson, AZ 85706
For installation and service information call: 1-800-528-9131 Or visit us online at:
www.liftmaster.com
Before calling, please have the model number of the garage door opener...
8550 Manual - Page 38
Repair Parts
Garage Door Opener Parts
11
9
4 3
1
12
5
2 10
4
3
7 8
6
38
DESCRIPTION 1 Sprocket and Sprocket Cover
with Screws 2 End Panel with labels, battery
cover and light socket 3 Light Lens 4 Light Socket 5 Transformer 6 Cover 7 Motor and Travel Module 8 Travel Module 9 End Panel with all labels and
light socket 10 Receiver Logic Board 11 Line Cord 12 Filter Board...
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