User manual CHAMBERLAIN BAS300K

[. . . ] This safety alert symbol means "Caution" - failure to comply with such an instruction involves risk of personal injury or damage to property. This garage door opener is designed and tested to offer reasonable safe service provided it is installed, operated, maintained and tested in strict accordance with the instructions contained in this manual. Door must not extend over public footpaths or roads during operation. Before installing the drive unit all ropes or chains, which are not required, must be removed and all devices, which are not required after the installation of the drive, must be put out of operation. [. . . ] Pay attention to the sealing fitting around the transparent light cover, which must be properly positioned. Bulbs are not subject to guarantee claims. If the drive is unlatched the door can be opened or closed by hand. If the drive is locked the door can only be operated with the drive. Following mechanical installation it is necessary to check whether the up-and-over door is still in equilibrium after increasing the weight of the drive and the accessories. If necessary counterweights or torsion springs should be used to regain equilibrium. optimum swivelling is guaranteed if the door remains in the medium position (45°) and is in equilibrium with the drive unlatched. Furthermore it should be ensured, by manually moving the door, that when opening and closing it the swing takes place linearly and without any jumps or abrupt movements. Unlatching: In a recess at the back of the plastic cover is an unlatching key. Take it out and push it into the marked opening which is also on the back of the drive. By turning it clockwise through about 180° the drive is unlatched. Latching: With the unlatching key pushed in turn it clockwise until you feel a solid resistance. Then move the door a little by hand until you hear it click or you can establish that the door is latched again. If 2 drives are mounted on the door both of them must be unlatched and latched. If the garage has no external access it is necessary to mount an external unlatching system for the situation when the drive is without power. The limit switches are triggered by 2 cams which can be adjusted on the shaft with a little force or by a screwdriver. the limit switch position determines the points "DOOR OPEN" and "DOOR CLOSED". By turning the cams the switch-off point can be adjusted in both directions. Setting for single motor operation (drive mounted centrally): The outside limit switch is the one for DOOR OPEN. the inner limit switch on the motor is DOOR CLOSED. Setting for double motor operation (drives to the right and left): If the drive is mounted with the limit switch RIGHT the adjustment is made as described above. The drive is already wired up and as a minimum requirement it is only necessary to connect or bridge the supply terminal N, Earth, L and the photocells COM, OP, CL (danger). [. . . ] a automatic as well as manual operation. A pulse during the pulse during the closing closing movement is ignored. movement causes a stop , the next pulse re-opening. Dead man operation with Input: By pressing and holding down the pulse generator the door opens. [. . . ]