User manual LIFT-MASTER 71 909207

[. . . ] MID STOP MODIFICATION Mini Limit Switches 71-909207 APPLICATION REQUIREMENTS: This modification is available to models T, GT, APT, J, H, GH, SD and GSD standard door operators with 24V control circuits. Not for use with Solid State Logic Control Board (L). [. . . ] PREPARATION: Unpack kit to verify the parts listed below are included. Refer to installation instructions on reverse side. PACKING LIST: PART NUMBER 01-11602 82-PX08-04T 95-RD10-23 75-12480 10-14179 *01-1179-1 **01-1179-3 DESCRIPTION MID STOP MODIFICATION INSTRUCTIONS SCREW, #8-32 x 1/4" LG PAN HEAD PHILLIPS SELF TAP WIRE 18GA RED 10" . 110 FASTON X . 187 FASTON MID STOP SWITCH BRACKET ASSEMBLY AUXILIARY LIMIT SWITCH 1O B2 MID-STOP WIRING DIAGRAM 3O B2 MID-STOP WIRING DIAGRAM QUANTITY 1 3 1 1 1 1 1 *SHIPPED WITH 1O OPERATORS **SHIPPED WITH 3O OPERATORS INSTALLATION INSTRUCTIONS 1. Locate the new bracket assembly with the limit switch attached. Before installing the new bracket inside the box you must first run the wires from the top limit switches along side the bracket on the contactor side of the box and run the wires from the bottom limit switches through the cut out in the bracket. Be sure not to pinch wires under the bracket (refer to figure 1). Fasten the bracket down with the (2) screws supplied (refer to figure 2). Locate the yellow wire on terminal #3 and move to terminal #1. Locate the red wire that runs from (R3) on the radio terminal block to the relay coil on the (R1) relay, remove the end connected to the relay coil and tape or cap end so it can't short out. Install a new red wire from the relay coil (from step 4) to (A2) on the open contactor. Locate the yellow wire from common on the auxiliary open limit switch and move to common on the new mid stop switch. Locate the orange wire from normally close on the auxiliary open limit switch and move to normally closed on the new mid stop switch. Adjust bracket (installed in step 2) so limit nut actuates switch in passing. . Adjust midstop switch for desired opening height by moving it on bracket. FIGURE 2 (2) #8-32 X 1/4" LONG PAN HD PHILLIPS SELF TAPING SCREWS MID STOP SWITCH BRACKET ASSEMBLY TERMINAL BLOCK IR RELAY R1 RELAY (3) #8-32 X 1/4" LONG PAN HD PHILLIPS SELF TAPING SCREWS MID STOP SWITCH BRACKET ASSEMBLY CONTACTOR TRANSFORMER MID STOP SWITCH BRACKET ASSEMBLY RUN WIRES FROM BOTTOM LIMIT SWITCHES THROUGH CUT OUT IN BRACKET. [. . . ] The second channel connects to terminals 2 and 3. (This channel will close) 01-11602C © 1999, The Chamberlain Group, Inc. [. . . ]