Chamberlain Merlin MJ3800R Installation And Operating Instructions Manual page 17

ADJUSTMENT STEP 5
TO OPEN THE DOOR MANUALLY
The door should be fully closed if possible. Pull down on
the emergency release handle until a click noise is heard
from the unit and lift the door manually. To reconnect
the door to the opener, pull down the emergency release
handle straight down a second time until a click noise is
heard from the unit. The door will reconnect on the next
UP or DOWN operation.
OPERATION
IMPORTANT SAFETY INSTRUCTIONS
To reduce the risk of SEVERE INJURY or DEATH:
1. READ AND FOLLOW ALL WARNINGS AND
INSTRUCTIONS.
2. ALWAYS keep transmitters out of reach of children.
NEVER permit children to operate or play with the
wireless wall button, multi-function door control or
transmitters.
3. ONLY activate the door when it can be seen clearly,
it is properly adjusted and there are no obstructions
to door travel.
4. ALWAYS keep the door in sight until completely
closed. NO ONE SHOULD CROSS THE PATH OF THE
MOVING DOOR.
5. NO ONE SHOULD GO UNDER A STOPPED,
PARTIALLY OPENED DOOR.
6. If possible, use emergency release handle to
disengage door ONLY when the door is CLOSED.
Weak or broken springs or unbalanced door could
result in an open door falling rapidly and/or
unexpectedly.
7. NEVER use emergency release handle unless the
doorway is clear of persons and obstructions.
To prevent possible SERIOUS INJURY or DEATH from a falling door:
• If possible, use emergency release handle to disengage door ONLY when 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 the doorway is clear of persons and obstructions.
EMERGENCY DOOR RELEASE
Emergency
Release Handle
WARNING WARNING
8. After ANY adjustments are made, the safety
reversal system MUST be tested.
9. Safety reversal system MUST be tested every
month. The door MUST reverse on contact with
40mm (1 1/2") high obstacle on the floor.
10. ALWAYS KEEP THE DOOR PROPERLY BALANCED
(see page 4). An improperly balanced door may
not reverse when required and could result in
SEVERE INJURY or DEATH.
11. ALL repairs to cables, spring assemblies and other
hardware, ALL of which are under EXTREME
tension, MUST be made by a trained door systems
technician.
12. ALWAYS disconnect electric power to the door
opener BEFORE making ANY repairs or removing
covers.
13. Permanently fix the Emergency release instruction
label adjacent to the release handle.
KEEP THESE INSTRUCTIONS.
14.
WARNING WARNING
17
WARNING