User manual LIFT-MASTER 90 E2

[. . . ] E2 Wiring Type (K-Line Operators) CONVERSION INSTRUCTIONS SINGLE PHASE MODELS: T, GT, J, H, GH, SD, GSD Instructions to convert a single phase standard control box with type C2 / B2 control wiring to type E2 control wiring Type E2 wiring Function: Constant pressure is required on the close button, if a close button is released before the door is fully closed the door will return to open position. Use of a safety edge will allow you to override close button. [. . . ] Locate the R1 relay (24VAC relay with six wires). Remove the two orange wires (one from terminal three and one from terminal seven) and discard. Locate the external radio strip and remove one orange wire going from "R1" to terminal #3 and discard wire. Remove one yellow wire going from "R2" to terminal #7 and discard. NOTE: Be sure to leave 2 red wires on "R3" radio block intact. Move red wire from terminal three to terminal two. Move gray wire from terminal ten to terminal three. Remove the red wire connecting terminal one and coil of (R1) relay and discard. NOTE: Be sure to remove wire going to terminal #1 not terminal "R3" on radio block. Install new bracket and limit switch with hardware supplied. WARNING Disconnect power to the operator(s) before making control wiring modification. W Be sure to adjust bracket so limit nut will actuate switch in passing, this will be the roll back switch (refer to figure 1). CAUTION 8. Install a new grey wire from terminal #10 to the normally closed on the roll back switch. Install another grey wire from the common on the roll back switch to the coil of the (R1) relay were the red wire was removed in step 6. [. . . ] This will insure electrician won't damage door when he applies power to unit. NOTE: For additional help with the wiring described above, refer to the schematic diagram on page two of the instructions. E2 SCHEMATIC DIAGRAM FIGURE 1 (2) #8-32 X 1/4" LONG PAN HD PHILLIPS SELF TAPING SCREWS ROLL BACK SWITCH BRACKET ASSEMBLY 01-11971B © 1998, The Chamberlain Group, Inc. [. . . ]