User manual LIFT-MASTER LM21-AFC

[. . . ] RELEASE DEVICES MADE IN THE U. S. A. ADVANCE FIRE CONTROL MODEL LM21-AFC MANUAL The LiftMaster Fire Control (LM21-AFC) Release Device/Control Panel is UL/CUL listed normally energized fail-safe device incorporating state of the art electronic control circuitry. The LM21-AFC is designed to be used with manual doors or motorized doors incorporating a reversing feature safety edge to create an automated door closing system. The LM21-AFC high performance control panel responds to emergency conditions generated by manual or automatic initiating devices. Upon activation from such a device, the unit will then automatically close a motorized door or release a manual door. [. . . ] limit to toggle 3 before operator limit when door is traveling toward open position. (Supervised, current-limited circuit) Note: Electrical loops must be provided as dry contacts and may not be used in conjunction with the simultaneous switching of a motor control or any other voltage through the same contacts. Connections of this type will result in immediate damage to the release device. Figure 5 Auxiliary Limit Switch Connections 8. Motor control relay (Motorized doors only) - Connect wiring from 7, 8, 9 & 10 across motor control 3-button station (For use with N/O `Close' switch, N/O `Open' switch and N/C `Stop' switch). The Close relay output latches to initiate a door closure through the operator after a 10-second delay (20-sec. (Figure 6) The Open relay is used to open the door when the Auto-Open feature is enabled. Figure 6 - Operator Electrical Connections Remote test station. - (Optional) This optional device (part number SSRT) disables the cycle counter to allow testing of the door without a mechanical release after 3 cycles. Connect N/O remote test switch common to 21 and 22 as illustrated in Figure 7. Annunciator - (Optional) Connect annunciator (part number SSHS2475ADA) to 16 (+) & 20 (-) as illustrated in Figure 7. UL/CUL listed end-of-line resistor (2. 2k Ohm @ ¼ Watt) must be placed installed as illustrated. Multiple annunciators may be connected but the maximum output current of the devices must not exceed . 75A DC. Additional dry contact relay is provided between 17 (Input) and 18 (N/C Output) and 19 (N/O Output) as illustrated in Figure 7. 9. Figure 7 - Electrical Connections for Annunciator and Test Plate 4 DIP-Switch Options The LM21-AFC has six DIP-switch selectable options. The options DIP-switch is located next to terminal block 5 as illustrated in Figure 2. The selection of positions is listed below. DIP Sw itch Position 1 Sw itch 'On' Motorized door. The LM21-AFC will attempt to close the door with the motor before releasing. If a motorized door is used, the LM21-AFC will attempt to close the door but will reverse if the safety edge is triggered. The LM21-AFC will stop the door on the obstruction when it is sensed the third time. The LM21-AFC will have a 20 second delay after an alarm is sensed before performing a door closure or drop. The LM21-AFC will drop the door after 6 minutes if close limit is not achieved by a motorized closure. Treat a loss of line power as an alarm, which leads to door closure, or drop. The LM21-AFC will drop the door without attempting to close it with a motor. [. . . ] Depress and continue to hold the "Test" button on side of release device. Annunciator will sound indicating a door closure is about to occur and after factory set 10-second alarm verification delay (or 20-sec. This test verifies a mechanical release in absence of power to the motor. Reset fire door release mechanism, then reset LM21-AFC release mechanism by pressing mechanical reset plunger. [. . . ]