Limit Switches & Limit Cams: Adjustment & Functionality; Limit Switch Functionality; Limit Switch Adjustments: Open And Close Cam Settings; Advanced Limit Switch Adjustments - Manaras Opera-H Installation Instructions Manual

7 Limit Switches & Limit Cams: Adjustment & Functionality
• Do not attempt to make limit switch adjustments unless power has been electrically disconnected.
7.1

Limit Switch Functionality

Open Limit Switch and Advanced Open Limit Switch
When activated, the Open Limit Switch will stop the operator while the door is travelling in the upward direction.
Should be adjusted accordingly to stop door in fully opened position. The Advanced Open Limit Switch is used for a
radio-control feature and to activate the Timer to Close feature (if used).
Close Limit Switch and Advanced Close Limit Switch
When activated, the Close Limit Switch will stop the operator while the door is travelling in the downward direction.
Should be adjusted accordingly to stop door in fully closed position. The Advanced Close Limit Switch is used for the
operation of a reversing edge or external entrapment protection devices. With this limit switch, the floor is not
considered as an obstacle, therefore the door does not reverse its movement once it reaches the floor.
7.2

Limit Switch Adjustments: Open and Close Cam Settings

This operator is equipped with the ACCU-CAM
To adjust the limit cams, see Figure 17.
1. Pull the cam's retaining bracket back.
2. Turn the cams for limit adjustment: turning cams toward the center of the limit shaft increases door travel or
turning the cams toward the limit switch decreases door travel.
7.3

Advanced Limit Switch Adjustments

The Advanced Close Limit Switch must be field adjusted in order to deactivate the reversing edge or external
entrapment protection device at a maximum of 6 in (15,2 cm) from the floor. The adjustment can be performed by
changing the position of the Advance Close Limit Switch on its slotted support bracket.
Cam Retaining
Bracket
Advanced Open
Limit Switch
For technical support, please call 1-800-361-2260 or visit
To reduce risk of SEVERE INJURY or DEATH to persons:
feature, for precise and quick one-handed limit setting adjustments.
®
Open Side
Open Cam
Increase
Door Travel
Open Limit
Switch
Figure 17 - Limit Switches and Cams Adjustment
13
WARNING
Decrease
Door Travel
Close Limit
Switch
www.manaras.com
Close Side
Close Cam
Increase
Door Travel
Advanced Close
Limit Switch
for more information