User manual LIFT-MASTER 90 503000

[. . . ] NON-RESETTABLE COUNTER 90503000 and 71-90503000 APPLICATION REQUIREMENTS This modification is available on both "logic" (L) and "contactor" style (M) LiftMaster operators with 24V control circuits. NOTE: Not available on model LGJ or with Hazardous Area Modification. WARNING CAUTION WARNING To prevent possible SERIOUS INJURY or DEATH from electrocution, disconnect electric power to operator BEFORE installing. [. . . ] Remove the parts from the bag labeled "Logic Parts. " 3. Using one of the crimp-on wire nuts, attach the 10" black wire with the 0. 187" quick connect to one of the black wires coming from the counter. Using the remaining crimp-on wire nut, attach the 10" black wire with the 0. 250" piggy-back quick connect to the remaining black wire coming from the counter. Locate the mounting position for the counter (Figures 1 and 3). Using the (2) #8 screws (Model H electrical box) or the (2) #6 screws (Model T or Damp Environment electrical box), mount the counter in the electrical box making sure that the wires are not pinched under the counter. Locate the limit switch, plastic standoff for the limit switch, (2) lockwashers, (1) metal nut plate, (1) metal back plate, and (2) pan head 4-40 screws and install the limit switch above the open limit switch (OLS) in the operator. Be careful to line up the this limit switch with the OLS so that it will activate just before the OLS activates. Connect the 10" black wire with the 0. 187" quick connect (attached to the counter) to the common terminal of the limit switch that was just installed. Connect the 10" blue wire with the 0. 187" quick connect and 0. 250" piggy-back quick connect to the normally closed (NC) terminal of the limit switch that was just installed. Logic 3 Standard Models H and J Operators Logic 3 Standard Models T and GH 9. Remove both wires from the 24 Volt secondary of the transformer, one yellow and one blue. Attach the 0. 250" quick connect of the blue wire (connected to the NC terminal of the limit switch) to one of the bare terminals on the 24V secondary of the transformer. Connect blue wire removed in the previous step to the piggy-back terminal of the wire. Attach the 0. 250" quick connect of the black wire (connected to the counter) to the remaining bare terminal on the 24V secondary of the transformer. Connect the yellow wire previously removed from the transformer to the piggy-back terminal of the wire. [. . . ] FIGURE 3 FIGURE 2 LOGIC STYLE OPERATORS Terminals on Logic Board 3 XFMR Secondary 13 (BK) C NO NC (BL) (YE) 14 (BL) 24VAC Counter (5va Max. ) LOGIC 3 (BK) C NO NC 12 13 Aux. Open L/S Terminals on Logic Board 2 24VAC Counter (5va Max. ) LOGIC 2 CONTACTOR STYLE OPERATOR CLOSE A1 A2 A1 A2 OPEN Contactor (BK) 24VAC Counter (5va Max. ) CONTACTOR OPERATOR (BK) Logic 3 Damp Environment Models CT, CH, CJ, CGH and CGT 01-13401E © 2006, The Chamberlain Group, Inc. [. . . ]