Chamberlain 985 You'll Need Tools

3

SECTIONAL DOOR ONE-PIECE DOOR

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

You'll Need Tools

During assembly, installation and adjustment of the opener, instructions will call for hand tools shown below.

To avoid damage to the garage door and

opener, disable locks before installing and

operating the opener. Use a wood screw or nail

to hold locks in the “open” (unlocked) position.

Operation at other than 120V 60 Hz will cause

opener malfunction and damage.

CAUTIONCAUTION

WARNING

An unbalanced garage door might not reverse

when required and someone under the door

could be seriously injured or killed.

If your garage door binds, sticks or is out of

balance, call for professional garage door

service.

Garage doors, door springs, cables,

pulleys, brackets and their hardware, are

under extreme tension and can cause serious

injury or death.

Do not try to loosen, move or

adjust them yourself!

Ropes left on a garage door could cause

someone to become entangled and killed.

Remove all ropes connected to the door before

installing and operating the opener.

Identify the type and height of your door, any special

conditions that exist, and any additional materials that

may be required, by referring to page 4.

Test your Door

Before you begin, complete the following test to

make sure your door is balanced, and is not

sticking or binding:

• Lift the door about halfway as shown. Release the

door. It should stay in place, supported entirely by

its springs.

• Raise and lower the door to see if there is any

binding or sticking.

Contents

Main Start by reviewing these important safety alert symbols: Contents Page Mechanical Electrical serious injuries or death Contents Page You'll Need Tools Ropes left on a garage door could cause someone to become entangled and killed. Slack in chain tension is normal when garage door is closed FINISHED CEILING Support bracket & fastening hardware is required. See page 13. 4 Sectional Door Installation One-Piece Door Installation without Track One-Piece Door with Track Carton Inventory Assembly Step 1 Attach the T-rail to the Opener Use only these screws! Assembly Step 2 Attach Chain to Sprocket and Install Sprocket Cover IMPORTANT INSTALLATION INSTRUCTIONS To reduce the risk of severe injury or death to persons: An improperly balanced door may not reverse and could result in severe injury or death. Ropes connected to a garage door can cause entanglement and death. Proceed to Step 2, page 10. SECTIONAL Doors and ONE-PIECE Door With Track Installation Section: Pages 8 23 Installation Step 1 Determine Header Bracket Location The door might not reverse when required, and could cause serious injury or death. Proceed to Step 2, page 10. ONE-PIECE Door Without Track Read the Safety Instructions on page 8. They also apply to doors without tracks. Fasten the Header Bracket to the Wall Fasten the Header Bracket to the Ceiling Installation Step 2 Install the Header Bracket Installation Step 3 Attach the T-rail to the Header Bracket Installation Step 4 Position the Opener SECTIONAL Door & ONE-PIECE Door with Track ONE-PIECE Door without Track You will need help at this point if the ladder is not tall enough. Installation Step 5 Hang the Opener each The opener could fall and injure someone if it is not properly secured. Figure 1 Installation Step 6 Install the Door Control close open The garage door could close and cause serious injury or death. Installation Step 8 Attach the Manual Release Rope and Handle The rope knot could become untied and you could fall. Install the light Install the lens Installation Step 9 and NOT To prevent electrocution or fire, Electrical Requirements The ProtectorSystem must Installation Step 10 Install the Safety Reversing Sensor (Receiving and Sending Eyes) Garage door track installation (preferred): Wall installation: Floor installation: glow steadily sending eye glows steadily sending glows steadily, glow steadily Installation Step 11 Fasten Door Bracket Figure 2 Note correct UP placement, as stamped inside the bracket. SECTIONAL Door Installation Procedure All ONE-PIECE Door Installation Procedure Installation Step 12 Connect Door Arm to Trolley Hole Alignment Alternative Figure 3 5/16"x1-1/4" clevis pin. Can/DoorArmToTrolley c 1 Adjustment Step 1 Adjust the UP and DOWN Limits How and When to Adjust the Limits Adjustment Section: Pages 24 26 Adjustment Step 2 Adjust the Force reverses at least up Adjustment Step 4 Test the Safety Reverse System Adjustment Step 3 Test The Protector System Important Safety Check IMPORTANT SAFETY INSTRUCTIONS To reduce the risk of severe injury or death to persons: Limit and force adjustment controls Maintenance Schedule MUST Failure to properly adjust the opener may result in severe injury or death. Operation of Your Opener Operation of the Door Control Button Children operating or playing with a garage door opener can injure themselves or others. The garage door could close and cause serious injury or death. hold Receiver and Remote Control Programming flash once. 3. SECURITY Garage Door Opener SECURITY Single-Function Remote Control Having a Problem? Situation Probable Cause & Solution Having a Problem? (continued) Situation Probable Cause & Solution Page Repair Parts To Add the Keyless Entry Accessories Available For Your Opener Required Index 2000, The Chamberlain Group, Inc. 114A2289C All Rights Reserved Printed in Mexico SERVICE IS ON CALL 1-800-654-4736 HOW TO ORDER REPAIR PARTS 1-800-654-4736 LIFT-MASTER GARAGE DOOR OPENER ONE-YEAR LIMITED WARRANTY