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Chamberlain CG40 - page 1
The Chamberlain Group, Inc. 845 Larch Avenue Elmhurst, Illinois 60126-1 196 www .chamberlaingroup.com GARAGE DOOR OPENER Series CG40 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. ■ The door WILL NOT CLOSE unle ...
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Chamberlain CG40 - page 2
2 Introduction 2-7 Safety symbol and signal word review ........................2 Preparing your garage door ........................................3 T ools needed ...............................................................3 Planning ..................................................................4-5 Carton inventory ........................ ...
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Chamberlain CG40 - page 3
3 Pliers Wire Cutters Claw Hammer Hack Saw Screwdriver Adjustable End Wrench 1/2" and 7/16" Sockets and Wrench Drill Tape Measure 2 1 Stepladder Pencil 3/16", 5/16" and 5/32" Drill Bits Carpenter's Level To prevent damage to garage door and opener: • AL W A YS disable locks BEFORE installing and operating the opener ...
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Chamberlain CG40 - page 4
Safety Reversing Sensor Support bracket & fastening hardware is required. See page 17. Door Center Header Wall FINISHED CEILING Torsion Spring Extension Spring OR Safety Reversing Sensor Gap between floor and bottom of door must not exceed 1/4" Access Door Wall- mounted Door Control Horizontal and vertical reinforcement is needed for light ...
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Chamberlain CG40 - page 5
Access Door Gap between floor and bottom of door must not exceed 1/4" Safety Reversing Sensor Safety Reversing Sensor CLOSED POSITION Header Bracket Cable Pulley Bracket Door Bracket Straight Door Arm Curved Door Arm Trolley Emergency Release Rope & Handle T-rail Garage Door Cable Header Wall Chain 5 Planning (Continued) ONE-PIECE DOOR INS ...
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Chamberlain CG40 - page 6
6 Cable Pulley Bracket 2-Conductor Bell Wire White & White/Red Lighted Door Control Button with (2) screws 6ABx1-1/2" Trolley Chain and Cable in Dispensing Carton Curved Door Arm Section Safety Labels and Literature Sprocket Cover Rail Brace (3) T-rail Center Section (each) (2) T-rail End Section (2) Straight Door Arm Section Hanging Brack ...
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Chamberlain CG40 - page 7
Hardwar e Inventory Separate all hardware and group as shown below for the assembly and installation procedures. 7 NOTICE Lock Washer 5/16" (4) Nut 5/16" - 18 (4) Clevis Pin 5/16"x2-3/4" (1) Handle Dry Wall Anchors (2) Clevis Pin 5/16"x1" (1) Rope Lock Nut 1/4" - 20 x 7/16" (12) Nut 5/16" - 18 (5) Washer ...
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Chamberlain CG40 - page 8
8 ASSEMBL Y STEP 1 Assemble the Rail and Attach the Cable Pulley Bracket To avoid installation difficulties, do not run the garage door opener until instructed to do so. 1. Align the four T -rail sections on a flat surface exactly as shown . Center sections are interchangeable. Front and back sections are also interchangeable for ease of assembly . ...
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Chamberlain CG40 - page 9
9 ASSEMBL Y STEP 2 Install the T rolley • Attach the trolley threaded shaft to the trolley with the lock washer and nuts as shown. • As a temporary stop, insert a screwdriver into the hole in the front end of the T -rail. • Slide the trolley assembly along the rail to the screwdriver stop. NOTE: If trolley hits against any nuts on the T -rail ...
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Chamberlain CG40 - page 10
10 ASSEMBL Y STEP 4 Install the Chain/Cable and Attach the Sprocket Cover INST ALLING THE CHAIN/CABLE 1. Pull the cable loop from the carton and fasten it to the trolley with a master link from the hardware bag (see Figure 1). • Push pins of master link bar through cable loop and hole in front end of trolley . • Push master link cap over pins a ...
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Chamberlain CG40 - page 11
ASSEMBL Y STEP 5 Tighten the Chain and Cable • Spin the inner nut and lock washer down the trolley threaded shaft, away from the trolley . •T o tighten the chain, turn outer nut in the direction shown. AS YOU TURN THE NUT , KEEP THE CHAIN FROM TWISTING. • When the chain is approximately 1/2" above the base of the T -rail at its midpoint, ...
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Chamberlain CG40 - page 12
12 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 . SECTIONAL DOOR AND ONE-PIECE DOOR WITH TRACK 1. Close the door and mark the inside vertical centerline of the garage door . 2. Extend the line onto the header wall above the d ...
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Chamberlain CG40 - page 13
13 Header Wall Vertical Centerline Vertical Centerline of Garage Door 2x4 Unfinished Ceiling 2x4 OPTIONAL CEILING MOUNT FOR HEADER BRACKET Structural Supports ONE-PIECE DOOR WITHOUT TRACK 1. Close the door and mark the inside vertical centerline of your garage door . Extend the line onto the header wall above door , as shown. If headroom clearance ...
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Chamberlain CG40 - page 14
14 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. If installing into masonry , use concrete anchors (not provided). W ALL HE ...
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Chamberlain CG40 - page 15
Clevis Pin 5/16" x 2-3/4" Ring Fastener 15 INST ALLA TION STEP 3 Attach the T -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. Have someone hold the opener securely on a temporary support t ...
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Chamberlain CG40 - page 16
16 ONE-PIECE DOOR WITHOUT TRACK • With the door fully open and parallel to the floor , measure the distance from the floor to the top of the door . • Using a stepladder as a support, raise the top of the opener to this height. • The top of the door should be level with the top of the motor unit. Do not position the opener more than 2" ab ...
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Chamberlain CG40 - page 17
17 INST ALLA TION STEP 5 Hang the Opener T wo representative installations are shown. Y ours may be different. Hanging brackets should be angled (Figure 1) to provide rigid support. On finished ceilings (Figure 2), attach a sturdy metal bracket to structural supports before installing the opener . This bracket and fastening hardware are not provide ...
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Chamberlain CG40 - page 18
18 To prevent possible SERIOUS INJURY or DEA TH from electrocution: • Be sure power is not connected BEFORE installing door control. • Connect ONL Y to 24 VOL T low voltage wires. To prevent possible SERIOUS INJURY or DEA TH from a closing garage door: • Install door control within sight of garage door , out of reach of children at a minimum ...
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Chamberlain CG40 - page 19
19 INST ALLA TION STEP 7 Install the Light and Lens INST ALL THE LIGHT • Install a 75 watt maximum light bulb in the socket. The light will turn ON and remain lit for approximately 4-1/2 minutes when power is connected. Then the light will turn OFF . • Use standard neck Garage Door Opener bulbs for replacement. NOTE: Use only standard light bul ...
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Chamberlain CG40 - page 20
20 INST ALLA TION STEP 9 Electrical Requirements To avoid installation difficulties, do not run the opener at this time. To 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. If the plug doesn't fit into the outlet you have, cont ...
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Chamberlain CG40 - page 21
21 Invisible Light Beam Protection Area Sensor Beam 6" max. above floor Sensor Beam 6" max. above floor Facing the door from inside the garage INST ALLA TION STEP 10 Install The Protector System ® The safety reversing sensor must be connected and aligned correctly before the garage door opener will move in the down direction. IMPORT ANT ...
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Chamberlain CG40 - page 22
22 FLOOR MOUNT (RIGHT SIDE) WALL MOUNT (RIGHT SIDE) DOOR TRACK MOUNT (RIGHT SIDE) Indicator light Lens Lip Sensor Bracket Door T rack Sensor Bracket Extension Bracket (See Accessories) Lens Indicator light Attach with concrete anchors (not provided) Inside G arage W all Indicator light Sensor Bracket Lens Extension Bracket (See Accessories) Inside ...
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Chamberlain CG40 - page 23
23 1/4"-20x1/2" Carriage bolt Lens Wing nut Figure 4 MOUNTING AND WIRING THE SAFETY SENSORS • Slide a 1/4"-20x1/2" carriage bolt head into the slot on each sensor . Use wing nuts to fasten sensors to brackets, with lenses pointing toward each other across the door . Be sure the lens is not obstructed by a bracket extension. Se ...
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Chamberlain CG40 - page 24
24 To prevent damage to garage door , reinforce inside of door with angle iron both vertically and horizontally . INST ALLA TION STEP 11 Fasten the Door Bracket Follow instructions which apply to your door type as illustrated below or on the following page. Ah orizontal reinforcement brace should be long enough to be secured to two or three vertica ...
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Chamberlain CG40 - page 25
25 ONE-PIECE DOORS Please read and comply with the warnings and reinforcement instructions on the previous page. They apply to one-piece doors also. • Center the door bracket on the top of the door , in line with the header bracket as shown. Mark either the left and right, or the top and bottom holes. • Metal Doors: Drill 3/16" pilot holes ...
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Chamberlain CG40 - page 26
26 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 . Slide the outer trolley back (away from t ...
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Chamberlain CG40 - page 27
ALL ONE-PIECE DOORS 1. Assemble the door arm: • 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. • Secure with a ring fastener . 2. Adjustment proce ...
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Chamberlain CG40 - page 28
28 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. To operate the opener , press the Door Control push bar . Run the opener through a complete travel cycle. • Does the door open and close completely? • Does the door stay closed and not reve ...
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Chamberlain CG40 - page 29
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. Weather ...
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Chamberlain CG40 - page 30
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 every month. • If one control (for ce or travel limits) is adjusted, the other control may also need adjustment. • After ANY adjustments are made, t ...
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Chamberlain CG40 - page 31
OPERA TION 31 Using Y our Garage Door Opener Y our Security ✚ TM 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. Y our opener will operate with up to eight Security ✚ TM remote controls and one Security ✚ TM Keyless Entry System. If you pu ...
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Chamberlain CG40 - page 32
To Open the Door Manually DISCONNECT TROLLEY : The door should be fully closed if possible. Pull down on the emergency release handle (so that the trolley release arm snaps into a vertical position) and lift the door manually . The lockout feature prevents the trolley from reconnecting automatically , and the door can be raised and lowered manually ...
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Chamberlain CG40 - page 33
33 Care of Y our Opener LIMIT AND FORCE ADJUSTMENTS: W eather conditions may cause some minor changes in door operation requiring some readjustments, particularly during the first year of operation. Pages 28 and 29 refer to the limit and force adjustments. Only a screwdriver is required. Follow the instructions carefully . Repeat the safety reverse ...
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Chamberlain CG40 - page 34
34 Having a Problem? (Continued) 6. The garage door opens and closes by itself: • Be sure that all remote control push buttons are off. • Remove the bell wire from the door control terminals and operate from the remote only . If this solves the problem, the door control is faulty (replace), or there is an intermittent short on the wire between ...
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Chamberlain CG40 - page 35
LO C K L I G H T *Multi-Function Remotes If supplied with your garage door opener , the large button is factory programmed to operate it. Additional buttons on any Security ✚ TM multi-function remote or mini-remote can be programmed to operate other Security ✚ TM garage door openers. To Erase All Codes From Motor Unit Memory To deactivate any u ...
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Chamberlain CG40 - page 36
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. 3. Continue holding the ENTER and LIGHT buttons while you press the push bar on the Multi-Function Door Control (all three buttons ...
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Chamberlain CG40 - page 37
7 U P C E I L I N G M O U N T O N L Y 9 10 11 NOTICE 5 6 8 1 4 12 13 3 2 1 3 3 6 7 4 5 5 8 2 Installation Parts 37 REP AIR P ARTS Rail Assembly Parts KEY P ART NO. NO. DESCRIPTION 1 4A1008 Master link kit 2 41A3489 Complete trolley assembly 3 183B1 12 Rail braces (each) 4 183B1 1 1 T -rail – center sections (each) 5 183B1 13 T -rail – end secti ...
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Chamberlain CG40 - page 38
Motor Unit Assembly Parts 38 2 10 8 13 14 15 16 19 4 3 DN UP Brown Wire (Down) Contact LIMIT SWITCH ASSY. Grey Wire Yellow Wire (Up) Contact Center Limit Contact Drive Gear 9 20 16 12 18 11 17 3 1 5 6 7 KEY P ART NO. NO. DESCRIPTION 1 31D380 Sprocket cover 2 41C4220A Gear and sprocket assembly , Complete with: Spring washer; Thrust washer; Retainin ...
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Chamberlain CG40 - page 39
LOCK LIGHT L O C K L IG H T 39 ACCESSORIES 3-Button Security ✚ ™ Remote Control: Includes visor clip. SECURITY ✚ TM Keyless Entry: Enables homeowner to operate garage door opener from outside by entering a password on a specially designed keyboard. Also can add a temporary password for visitors or service persons. This temporary password can ...
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Chamberlain CG40 - page 40
©2003, The Chamberlain Group, Inc. 1 14A2490D All Rights Reserved Printed in Mexico CHAMBERLAIN GARAGE DOOR OPENER ONE-YEAR LIMITED W ARRANTY The Chamberlain Group, Inc. (“Seller”) warrants to the first retail purchaser of this product, for the residence in which this product is originally installed, that it will be free from any defect in mat ...
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