To Open The Door Manually; Care Of Your Opener - Chamberlain WHISPER DRIVE Security+ HD900D Owner's Manual

To Open the Door Manually

To prevent possible SERIOUS INJURY or DEATH from a falling
garage door:
• If possible, use emergency release handle to disengage
trolley ONLY when garage door is CLOSED. Weak or broken
springs or unbalanced door could result in an open door
falling rapidly and/or unexpectedly.
• NEVER use emergency release handle unless garage
doorway is clear of persons and obstructions.
• NEVER use handle to pull door open or closed. If rope knot
becomes untied, you could fall.
DISCONNECT THE 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 as often as necessary.
TO RE-CONNECT THE TROLLEY:
Pull the emergency release handle
toward the opener at an angle so
that the trolley release arm is
horizontal. The trolley will reconnect
on the next UP or DOWN operation,
either manually or by using the
door control or remote.

Care of Your Opener

MAINTENANCE SCHEDULE
Once a Month
• Manually operate door. If it is unbalanced or binding, call a
trained door systems technician.
• Check to be sure door opens & closes fully. Adjust limits and/
or force if necessary (See pages 28 and 29).
• Repeat the safety reverse test. Make any necessary
adjustments (See Adjustment Step 3).
Once a Year
• Oil door rollers, bearings and hinges. The opener does not
require additional lubrication. Do not grease the door tracks.
Trolley
Trolley
Release Arm
(In Manual
Disconnect
Position)
Lockout position
(Manual disconnect)
Trolley
Trolley
Release
Arm
Emergency
Release Handle
(Down and Back)
To reconnect
34
THE REMOTE CONTROL BATTERY
To prevent possible SERIOUS INJURY or DEATH:
• NEVER allow small children near batteries.
• If battery is swallowed, immediately notify doctor.
To reduce risk of fire, explosion or chemical burn:
• Replace ONLY with 3V2032 coin batteries.
• DO NOT recharge, disassemble, heat above 100° C (212° F)
or incinerate.
The lithium battery should produce
power for up to 5 years. To replace
battery, use the visor clip or
screwdriver blade to pry open the
case as shown. Insert battery
positive side up (+).
Dispose of old battery properly.
Replace the battery with only 3V2032
coin cell batteries.
NOTICE: To comply with FCC and or Industry Canada rules (IC), adjustment or modifications of this
receiver and/or transmitter are prohibited, except for changing the code setting or replacing the
battery. THERE ARE NO OTHER USER SERVICEABLE PARTS.
Tested to Comply with FCC Standards FOR HOME OR OFFICE USE. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired operation.
Battery
positive
side up (+)