Instruction/ maintenance manual of the product 2255 Chamberlain
Go to page of 36
The Chamberlain Group, Inc. 845 Larch Avenue Elmhurst, Illinois 60126-1 196 www .liftmaster .com GARAGE DOOR OPENER Models 2245 1/3 HP 2255 1/2 HP 2255-2 1/2 HP For Residential Use Only ® Owner’s Manual ■ Please read this manual and the enclosed safety materials carefully! ■ Fasten the manual near the garage door after installation.
2 Introduction 2-5 Safety symbol and signal word review ........................2 Preparing your garage door ........................................3 T ools needed ...............................................................3 Planning ............
3 T o prevent damage to garage door and opener: • AL WA YS disable locks BEFORE installing and operating the opener . • ONL Y operate garage door opener at 120V , 60 Hz to avoid malfunction and damage.
FINIS HED CEILING Support bracket & fastening hardw are is required. See page 1 2. Slack in chain tension is normal when garage door is closed. Safety Reversing Sensor Header Wall Access Door Safety Reversing Sensor Gap between floor and bottom of door must not exceed 1/4" (6 mm).
5 Y our garage door opener is packaged in two cartons which contain the motor unit and all parts illustrated below . Accessories will depend on the model purchased. If anything is missing, carefully check the packing material. Parts may be stuck in the foam.
6 ASSEMBL Y STEP 1 Attach the Rail to the Motor Unit T o avoid installation difficulties, do not run the garage door opener until instructed to do so. • Remove the two washered bolts mounted in top of motor unit. • Position rail at a 45 û angle to opener so one hole in rail and motor unit line up.
7 Lock W asher T o Tighten Outer Nut Inner Nut T rolley Chain Base of Rail 1/2" (13 mm) T o Tighten Inner Nut Outer Nut Mid Length of Rail INST ALLA TION ASSEMBL Y STEP 3 Tighten the Chain • Spin the inner nut and lock washer down the trolley threaded shaft, away from the trolley .
8 INST ALLA TION STEP 1 Determine the Header Bracket Location Installation procedures vary according to garage door types. Follow the instructions which apply to your door . 1. Close the door and mark the inside vertical centerline of the garage door .
9 INST ALLA TION STEP 2 Install the Header Bracket Y ou can attach the header bracket either to the wall above the garage door , or to the ceiling. Follow the instructions which will work best for your particular requirements. Do not install the header bracket over drywall.
10 Clevis Pin 5/16"x2-3/4" Ring Fastener INST ALLA TION STEP 3 Attach the Rail to the Header Bracket • Position the opener on the garage floor below the header bracket. Use packing material as a protective base. NOTE: If the door spring is in the way you’ll need help.
11 ONE-PIECE DOOR WITHOUT TRACK A 2x4 on its side is convenient for setting an ideal door-to-rail distance. • Remove foam packaging. • Raise the opener onto a stepladder . Y ou will need help at this point if the ladder is not tall enough. • Open the door all the way and place a 2x4 on its side on the top section of the door beneath the rail.
Measure Distance Lag Screws 5/16"-18x1-7/8" Structural Supports Bracket ( N ot Provided) Lag Screws 5/16"-18x1-7/8" ( N ot Provided) Bolt 5/16"-18x7/8" Lock Washer 5/16&q.
13 To release wire, push in tab with screwdriver tip Door Control Connections 7/16" (11 mm) Strip wire 7/16" (11 mm) Red Grey White L O C K L IG H T Slot Figure 4 REMOVE COVER INST ALLA TION STEP 6 Install the Door Control Locate door control within sight of the door at a minimum height of 5 feet (1.
14 INST ALLA TION STEP 7 Install the Light • Press the release tabs on both sides of lens. Gently rotate lens back and downward until the lens hinge is in the fully open position. Do not remove the lens. • Install up to a 100 watt maximum light bulb in each socket.
15 INST ALLA TION STEP 9 Electrical Requirements T o avoid installation difficulties, do not run the opener at this time. T o reduce the risk of electric shock, your garage door opener has a grounding type plug with a third grounding pin. This plug will only fit into a grounding type outlet.
16 Invisible Light Beam Protection Area Sensor Beam 6" (15 cm) max. above floor Sensor Beam 6" (15 cm) max. above floor Facing the door from inside the garage INST ALLA TION STEP 10 Install .
17 DOOR TRACK MOUNT (RIGHT SIDE) Indicator Light Lens Lip Sensor Bracket Door Track FLOOR MOUNT (RIGHT SIDE) WALL MOUNT (RIGHT SIDE) Indicator Light Sensor Bracket Lens Extension Bracket (See Accessor.
Invisible Light Beam Protection Area Sensor Sensor Connect Wire to Opener Quick-Connect Terminals Bell Wire Bell Wire Finished Ceiling Quick-Connect Terminals 3.
19 Fiberglass, aluminum or lightweight steel garage doors WILL REQUIRE reinforcement BEFORE installation of door bracket. Contact your door manufacturer for reinforcement kit.
20 Header Wall Vertical Centerline of Garage Door Finished Ceiling Optional Placement of Door Bracket Header Bracket Door Bracket 2x4 Support For a door with no exposed framing, or for the optional installation, use lag screws 5/16"x1-1/2" ( N ot Provided) to fasten door bracket.
21 INST ALLA TION STEP 12 Connect Door Arm to T rolley Follow instructions which apply to your door type as illustrated below and on the following page. SECTIONAL DOORS ONL Y • Make sure garage door is fully closed. Pull the emergency release handle to disconnect the outer trolley from the inner trolley .
22 ALL ONE-PIECE DOORS 1. Assemble the door arm, Figure 4: • Fasten the straight and curved door arm sections together to the longest possible length (with a 2 or 3 hole overlap). • With the door closed, connect the straight door arm section to the door bracket with the 5/16"x1-1/4" clevis pin.
23 ADJUSTMENT STEP 1 Adjust the UP and DOWN T ravel Limits Limit adjustment settings regulate the points at which the door will stop when moving up or down. T o operate the opener , press the Door Control push bar . Run the opener through a complete travel cycle.
ADJUSTMENT STEP 2 Adjust the Force Force adjustment controls are located on the back panel of the motor unit. Force adjustment settings regulate the amount of power required to open and close the door . If the forces are set too light, door travel may be interrupted by nuisance reversals in the down direction and stops in the up direction.
Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSL Y INJURED or KILLED by a closing garage door . • Safety reversal system MUST be tested ever y month. • If one control (force or travel limits) is adjusted, the other control may also need adjustment.
OPERA TION 26 IMPORT ANT SAFETY INSTRUCTIONS T o reduce the risk of SEVERE INJUR Y or DEA TH: Using Y our Garage Door Opener Y our Security ✚ ® opener and hand-held remote control have been factory-set to a matching code which changes with each use, randomly accessing over 100 billion new codes.
T o Open the Door Manually The door should be fully closed if possible. Pull down on the emergency release handle and lift the door manually . T o reconnect the door to the opener , press the door control push bar . The lockout feature prevents the trolley from reconnecting automatically .
CARE OF YOUR OPENER LIMIT AND FORCE ADJUSTMENTS: Weather conditions may cause some minor changes in door operation requiring some re-adjustments, particularly during the first year of operation. Pages 23 and 24 refer to the limit and force adjustments.
29 HA VING A PROBLEM? 1. My door will not close and the light bulbs blink on my motor unit: The safety reversing sensor must be connected and aligned correctly before the garage door opener will move in the down direction. • V erify the safety sensors are properly installed, aligned and free of any obstructions.
Bell W ire Safety Sensor Diagnostics Located On Motor Unit LED or Diagnostic LED "Learn" B u tton 30 Installed Safety Sensor Y our garage door opener is programmed with self-diagnostic capabilities. The “Learn” button/diagnostic LED will flash a number of times then pause signifying it has found a potential issue.
*3-Button Remotes If provided with your garage door opener , the large button is factory programmed to operate it. Additional buttons on any Security ✚ ® 3-Button remote or compact remote can be programmed to operate other Security ✚ ® garage door openers.
1. Enter a four digit personal identification number (PIN) of your choice on the keypad. Then press and hold ENTER. 2. While holding the ENTER button, press and hold the LIGHT button on the Multi-Function Door Control.
1 3 4 5 6 2 33 REP AIR P ARTS Rail Assembly Parts KEY P ART NO. NO. DESCRIPTION 1 4A1008 Master link kit 2 41A4813 Chain pulley bracket 3 41A3489 Complete trolley assembly 4 1707LM One-piece rail 5 41.
Motor Unit Assembly Parts 34 2 10 8 13 14 15 19 4 5 3 9 16 12 18 11 17 1 6 7 DN UP Brown Wire (Down) Contact LIMIT SWITCH ASSY. Grey Wire Yellow Wire (Up) Contact Center Limit Contact Drive Gear KEY P ART NO.
35 ACCESSORIES LOCK LIGHT L O C K L IG H T C LO S E D O P E N 973LM 974LM 995LM 170 8 LM 41A52 8 1 1702LM Outside Quick Release: Required for a garage with NO access door . Enables homeowner to open garage door manually from outside by disengaging trolley .
© 2004, The Chamberlain Group, Inc. 1 14A2683E All Rights Reserved Printed in Mexico LIFTMASTER SER VICE IS ON CALL OUR LARGE SERVICE ORGANIZA TION SP ANS AMERICA INST ALLA TION AND SERVICE INFORMA TION IS AS NEAR AS YOUR TELEPHONE SEVEN DA YS A WEEK.
An important point after buying a device Chamberlain 2255 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Chamberlain 2255 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Chamberlain 2255 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Chamberlain 2255 you will learn all the available features of the product, as well as information on its operation. The information that you get Chamberlain 2255 will certainly help you make a decision on the purchase.
If you already are a holder of Chamberlain 2255, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Chamberlain 2255.
However, one of the most important roles played by the user manual is to help in solving problems with Chamberlain 2255. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Chamberlain 2255 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
