en
Initial Operation:
The Chamberlain Arm™ has been designed so that, when used with a Chamberlain manufactured operator, the door will open
to a fully horizontal position (Figure 16).
Note:
The door may be designed in such a way that it does not open to the full horizontal. Adjust the UP limit so that the door
stops at a slightly downward angle when open.
Note:
Safety reversing sensors (Protector System) must be installed, please refer to your owner´s manual before proceeding to
Setting the limits and learning the force:
Setting the limits and learning the force:
When returning to your Owner’s Manual, adjust the trolley travel limits as follows:
1. With the inner and outer trolley sections still disconnected, manually open your door to the horizontal position. Make a mark
on the rail where the end of trolley nearest to the operator stops.
2. Manually close the door and mark the rail where the end of the trolley nearest the door stops.
3. With the inner and outer trolley sections still disconnected, activate the operator and adjust the limits following the owners
manual of the garage door opener, until the inner trolley stops on the marks you made.
4. Reconnect the inner and outer trolley sections so the door is connected to the operator.
5. Force must be learned after completion of the limit settings. Please read accordant section in Garagedoor Opener Manual.
6. Run the operator again to ensure the door is opening and closing correctly.
Continue with the instructions in your Owner’s Manual.
8
12
2
9
13
14
15
4
10
1
5
3
6
7
11
3
2
9
4
1
15
14
12
13
11
7
5
10
6
Do not attempt to adjust the spring. Call a local
garage door installing professional.
The Protector System™ (a safety reversing
sensor accessory) must be installed, if the
Chamberlain Arm is used.
1. Header wall
2. Header bracket
3. Garage door opener
rail
4. Ceiling
5. Garage door opener
hanging brackets
6. Trolley
7. Extension arm
8. Garage door
9. Garage door spring
10. Operator
11. Garage door opener
manual release
12. Chamberlain Arm™
13. Garage door track
14. Garage door, should
be horizontal in fully
open position
15. Use limit adjustment of
garage door opener to
level the garage door
FIG. 16
