ATA Cobra Manual 07-06
PROGRAMMING – Safety Force Margin
Please take care when testing the Safety Obstruction Force.
Excessive force may cause DEATH, SERIOUS PERSONAL INJURY and/or
PROPERTY DAMAGE can result from failure to follow this warning.
TESTING CLOSE CYCLE
1. Open the door by pressing the transmitter button programmed for the door.
2. Place a length of timber approximately 50mm high on the fl oor directly under the door.
3. Press the transmitter button to close door. The door should strike the object and start to re-open.
TESTING OPEN CYCLE
1. Close the door by pressing the transmitter button programmed for the door.
2. Press again to open the door. When the door reaches half the opening distance, grab the bottom rail of the door firmly, the door should stop.
If the door does not reverse readily when closing, or stop when opening, the force may be excessive and need adjusting, refer to following.
IMPORTANT WARNING: If the door is closing and is unable to re-open when obstructed, discontinue use.
Do not use a door with faulty obstruction sensing. Repair fault and re-test before using.
ADJUSTING SAFETY OBSTRUCTION FORCE
NOTE: The Safety Obstruction Force is calculated automatically and set in memory on the Cobra® opener. It is usually not necessary to adjust the Safety Obstruction Force. The only time the force may need to be increased is due to environmental conditions, for example, windy or dusty areas, and areas with extreme temperature changes.
1. Select Force Margin Mode using the INSTALL button on the unit. Display shows (F)orce (FIG 19)
2. Using a pre-coded transmitter, press button 1 to increase the open pressure and button 4 to decrease the open pressure (FIG 20). Similarly for close pressure use buttons 2 and 3 (FIG 20). The display will fl ash ‘F C x’ for force close pressure and ‘F O x’ for force open pressure. Where x is the force margin. The force margin can be adjusted from minimum 0 to maximum 9.
3. To store the force margins press and hold the INSTALL button on the unit until SE (Set) fl ashes on the display.
Note: A pre-coded transmitter implies that one of the buttons of the remote is programmed to a function. This means that the transmitter is stored in the Cobra® Overhead Garage Door Opener’s memory.
