Chamberlain M75 User Manual

The Chamberlain Group, Inc.845 Larch AvenueElmhurst, Illinois 60126-1196www.chamberlaingroup.comGARAGE DOOR OPENERFor Residential Use Only Owner’s Man

10INSTALLATION STEP 2Install the Header BracketYou can attach the header bracket either to the wallabove the garage door, or to the ceiling. Follow th

Clevis Pin5/16"x2-3/4"Ring Fastener11INSTALLATION STEP 3Attach the T-Rail to the HeaderBracket• Position the opener on the garage floor be

12ONE-PIECE DOOR WITHOUT TRACK•With the door fully open and parallel to the floor,measure the distance from the floor to the top ofthe door.• Using a

13INSTALLATION STEP 5Hang the OpenerTwo representative installations are shown.Yoursmay be different. Hanging brackets should be angled(Figure 1) to p

OpenerTerminal Screws Bell WireAntennaBACK PANELLighted DoorControl ButtonTerminal ScrewsBell WireWHTRED13975139752 31-2-1LightedDoor Control Button14

15INSTALLATION STEP 7Install the Light and LensINSTALL THE LIGHT• Install a 75 watt maximum light bulb in each socket.The light will turn ON and remai

16INSTALLATION STEP 9Electrical RequirementsTo avoid installation difficulties, do not run theopener at this time.To reduce the risk of electric shoc

17Invisible Light BeamProtection AreaSensor Beam6" max.above floorSensor Beam6" max.above floorFacing the door from inside the garageINSTALL

18FLOOR MOUNT (RIGHT SIDE)WALL MOUNT (RIGHT SIDE)DOOR TRACK MOUNT (RIGHT SIDE)Indicator lightLensLip SensorBracketDoorTrackSensorBracketExtensionBrack

Carriage bolt1/4"-20x1/2"LensWing nutFigure 4MOUNTING AND WIRING THE SAFETY SENSORS• Slide a 1/4"-20x1/2" carriage bolt head into

2Introduction Pages 2-5Safety symbol and signal word review...2Preparing your garage door ...

20INSTALLATION STEP 11Fasten the Door Bracket Follow instructions which apply to your door typeas illustrated below or on the following page.A horizon

21Header WallVerticalCenterline ofGarage DoorFinished CeilingOptionalPlacementof DoorBracketHeaderBracketDoorBracket2x4 SupportFor a door with no expo

22INSTALLATION STEP 12Connect Door Arm to TrolleyFollow instructions which apply to your door type asillustrated below and on the following page.SECTI

23ALL ONE-PIECE DOORS1. Assemble the door arm:• Fasten the straight and curved door arm sectionstogether to the longest possible length (with a 2or 3

24ADJUSTMENT STEP 1Adjust the UP and DOWN TravelLimitsLimit adjustment settings regulate the points at whichthe door will stop when moving up or down.

25ADJUSTMENT STEP 2Adjust the ForceForce adjustment controls are located on the backpanel of the motor unit. Force adjustment settingsregulate the amo

26Without a properly installed safety reversal system,persons (particularly small children) could beSERIOUSLY INJURED or KILLED by a closing garagedoo

OPERATION IMPORTANT SAFETY INSTRUCTIONSTo reduce the risk of severe injury or death:Using Your Garage Door OpenerYour Security✚ opener and hand-held r

28To Open the Door ManuallyThe door should be fullyclosed if possible. Pull downon the emergency releasehandle and lift the doormanually. To reconnect

29Care of Your OpenerLIMIT AND FORCE ADJUSTMENTS:Weather conditions may causesome minor changes in dooroperation requiring somereadjustments, particul

3PliersWire CuttersClaw HammerHack SawScrewdriverAdjustable End WrenchSockets 1/2" and 7/16" and WrenchDrillTape Measure21StepladderPencilDr

30Having a Problem? (Continued)6. The garage door opens and closes by itself:• Be sure that all remote control push buttons areoff.• Remove the bell w

*3-Button RemotesIf provided with your garage door opener, the largebutton is factory programmed to operate it. Additionalbuttons on anySecurity✚®3-Bu

1. Enter a four digit personalidentification number (PIN) of yourchoice on the keypad. Then pressand hold ENTER.2. While holding the ENTER button,pres

7UPCEILING MOUNT ONLY1110NOTICE56814912321345RAIL GREASENO. 83A11-2 62Installation Parts33REPAIR PARTSRail Assembly PartsKEY PARTNO. NO. DESCRIPTION1

Motor Unit Assembly Parts3421108131415161943DNUPBrownWire(Down)ContactLIMIT SWITCH ASSY.GreyWireYellowWire(Up)ContactCenter LimitContactDriveGear92016

LOCKLIGHT35ACCESSORIES 974AC970LM971AC1708LM97LM1702LMOutside Quick Release:Required for a garage with NOaccess door.8 Foot Complete Rail: To allow an

© 2003, The Chamberlain Group, Inc.114A2670C All Rights Reserved Printed in MexicoACCESS MASTER GARAGE DOOR OPENER ONE-YEAR LIMITED WARRANTYChamberlai

Safety Reversing SensorSupport bracket & fastening hardwareis required.See page 13. — — — — — — — —Door CenterHeader WallFINISHED CE

5Straight DoorArm SectionCurved DoorArm SectionSafety LabelsandLiteratureHeader BracketUPCEILING MOUNT ONLYSprocket Cover2 Conductor Bell WireWhite &a

6ASSEMBLY STEP 1Attach the T-Rail to the Motor UnitTo avoid installation difficulties, do not run thegarage door opener until instructed to do so.• Re

7ASSEMBLY STEP 3Tighten the Chain• Spin the inner nut and lock washer down thethreaded shaft, away from the trolley.• To tighten the chain, turn outer

8INSTALLATION STEP 1Determine the Header BracketLocationInstallation procedures vary according to garage doortypes. Follow the instructions which appl

9Header WallVerticalCenterlineVerticalCenterlineof GarageDoor2x4UnfinishedCeiling2x4OPTIONALCEILING MOUNTFOR HEADER BRACKETStructuralSupportsONE-PIECE