Chamberlain WHISPER DRIVE 248754 User Manual

The Chamberlain Group, Inc.845 Larch AvenueElmhurst, Illinois 60126-1196www.chamberlain.comGARAGE DOOR OPENERModel 248754 For Residential Use Only Own

10ASSEMBLY STEP 4Install the Belt and Attach the Belt Cap Retainer1. Pull the belt around the idler pulley and toward the trolley. The ribbed side mu

11ASSEMBLY STEP 5Set the Tension• Insert a screwdriver tip into one of the nut ring slots and brace it fi rmly against the trolley.• Place a 7/16&q

12INSTALLATION STEP 1Determine the Header Bracket LocationInstallation procedures vary according to garage door types. Follow the instructions which a

13Vertical Centerlineof Garage DoorVertical Centerlineof Garage DoorVertical Centerlineof Garage DoorVertical Centerlineof Garage DoorGarage DoorOptio

14INSTALLATION STEP 3Attach the Rail to the Header Bracket• Position the opener on the garage fl oor below the header bracket. Use packing material a

15ONE-PIECE DOOR WITHOUT TRACKA 2x4 on its side is convenient for setting an ideal door-to-rail distance. • Remove foam packaging.• Raise the opene

16INSTALLATION STEP 5Hang the OpenerThree representative installations are shown. Yours may be different. Hanging brackets should be angled(Figure 1)

17To prevent possible SERIOUS INJURY or DEATH from electrocution:• Disconnect ALL electric and battery power BEFORE performing ANY service or mainte

18INSTALLATION STEP 8Install the Lights • Press the release tabs on both sides of lens. Gently rotate lens back and downward until the lens hinge is

19To prevent possible SERIOUS INJURY or DEATH from a falling garage door:• If possible, use emergency release handle to disengage trolley ONLY when

2TABLE OF CONTENTSWhen you see these Safety Symbols and Signal Words on the following pages, they will alert you to the possibility of serious injury

20INSTALLATION STEP 10Electrical RequirementsTo avoid installation diffi culties, do not run the opener at this time.To reduce the risk of electric sho

21Facing the door from inside the garage.INSTALLATION STEP 11Install The Protector System®The safety reversing sensor must be connected and aligned co

22INSTALLING THE BRACKETSBe sure power to the opener is disconnected. Install and align the brackets so the sensors will face each other across the ga

23MOUNTING AND WIRING THE SAFETYREVERSING SENSORSMounting:• Slide a 1/4"-20x1/2" carriage bolt head into the slot on each sensor. Use wing

24ALIGNING THE SAFETY REVERSING SENSORS• Plug in the opener. The indicator lights in both the sending and receiving eyes will glow steadily if wiri

25INSTALLATION STEP 12Fasten the Door Bracket Follow instructions which apply to your door type as illustrated below or on the following page.A horizo

26ONE-PIECE DOORS Please read and comply with the warnings and reinforcement instructions on the previous page. They apply to one-piece doors also.•

27INSTALLATION STEP 13Connect Door Arm to the TrolleyFollow instructions which apply to your door type as illustrated below and on the following page.

28ALL ONE-PIECE DOORS1. Assemble the Door ArmIMPORTANT: The groove on the straight door arm MUST face away from the curved door arm (Figure 5). • Fa

29Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage

3Preparing your garage door Before you begin:• Disable locks.• Remove any ropes connected to garage door.• Complete the following test to make sur

30Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage

31ADJUSTMENT STEP 4Test The Protector System®• Press the remote control push button to open the door.• Place the opener carton in the path of the

32Using Your Garage Door OpenerYour Security✚® opener and hand-held remote control have been factory-set to a matching code which changes with each us

33Using the Wall-Mounted Door ControlTHE MOTION DETECTING DOOR CONTROL Press the push bar to open or close the door. Press again to reverse the door d

34Care of Your OpenerMAINTENANCE SCHEDULEEvery Month• Manually operate door. If it is unbalanced or binding, call a trained door systems technician.

35NOTE: LED is most visible with worklight off.GREEN LED:All systems are normal.• A solid LED light indicates the battery is fully charged.• A fl a

36Having a Problem? (Troubleshooting)1. My door will not close and the light bulbs blink on my motor unit: The safety reversing sensor must be connec

37Diagnostic ChartMotor RPM is not recognized.Safety reversing sensors slightly misaligned(dim or fl ashing LED).Door control or wire shorted. Safety r

38PROGRAMMINGNOTICE: If this Security✚® garage door opener is operated with a non-rolling code remote control, the technical measure in the receiver o

39To Add, Reprogram or Change a Keyless Entry PINNOTE: Your new Keyless Entry must be programmed to operate your garage door opener.USING THE “LEARN”

4PlanningIdentify the type and height of your garage door. Survey your garage area to see if any of the conditions below apply to your installation. A

40NOTICEPE NG MO NT ON YLOCKL GHTInstallation Parts13253469871112131410KEY PART NO. NO. DESCRIPTION 1 41C472-7 Motion detecting door control 2 9

41Motor Unit Assembly PartsKEY PART NO. NO. DESCRIPTION 1 41C76 Belt cap and sprocket 2 41B4245 Line cord 3 41B4375-3 Terminal block with scr

42ACCESSORIES 8808CB760CBOutside Quick Release:Required for a garage with NO access door.8 Foot (2.4 m) Rail Extension:To allow an 8 foot (2.4 m) door

43NOTES

CHAMBERLAIN® ONE-YEAR LIMITED WARRANTY10 YEAR BELT LIMITED WARRANTY & LIFETIME MOTOR LIMITED WARRANTYThe Chamberlain Group, Inc. (“Seller”) warran

5Planning (Continued)ONE-PIECE DOOR INSTALLATIONS• Generally, a one-piece door does not require reinforcement. If your door is lightweight, refer to

6Your garage door opener is packaged in one carton which contains the motor unit and all parts illustrated below. Accessories will depend on the model

7Hardware InventorySeparate all hardware and group as shown below for the assembly and installation procedures.ASSEMBLY HARDWARETrolley Threaded Shaft

8ASSEMBLY STEP 1Assemble the Rail and Install the TrolleyTo avoid installation diffi culties, do not run the garage door opener until instructed to do

9ASSEMBLY STEP 2Fasten the Rail to the Motor Unit• Insert a 1/4"-20x1-3/4" bolt into the cover protection bolt hole on the back end of th