Lift-master 90 909207C User Manual

INSTALLATION INSTRUCTIONS

MID STOP MODIFICATION

Mini Limit Switches

Model: Carwash

NOTE: It will be necessary to reset limits when modification is complete. Refer to the wiring instructions shipped with the modification.

REMOVING OLD LIMIT BRACKET:

1. Remove the ends of the grey wires running to the auxiliary closed limit switch. (Lay the ends of the wires off to the side for future connection)

2. Remove the ends of the yellow and orange wires running to the auxiliary open limit switch. (Lay the ends of the wire off to the side for future connection).

3. Remove the purple wire that runs from the auxiliary open limit switch to #2 on the terminal block and discard.

4. Loosen the screws holding the bracket on the panel and remove the bracket from the box (Be sure to leave the screws that held the bracket in place). Once the bracket is out of the box, remove the auxiliary open limit switch from the bracket. (Lay the auxiliary open limit switch, the hardware that was used to mount it off to the side for future application).

INSTALLING NEW DOUBLE SWITCH:

1. Locate the close limit switch and remove the ends of the purple that are connected to the switch.

2. Remove the close limit switch from the box and mount the new double switch in its place using the same hardware.

3. Rewire the first switch (this is the new closed) with the two wires just removed in step 1. The purple wire coming from the wire nut goes to the C and the purple wire coming from A1 on the contactor goes to NC.

DISCONNECT POWER AT THE FUSE BOX BEFORE PROCEEDING. REMOVE THE OPERATOR FROM ITS MOUNTED POSITION.

OPERATOR MUST BE PROPERLY GROUNDED AND CONNECTED IN ACCORDANCE WITH LOCAL ELECTRICAL CODES. NOTE: THE OPERATOR SHOULD BE ON A SEPARATE FUSED LINE OF ADEQUATE CAPACITY.

ALL ELECTRICAL CONNECTIONS MUST BE MADE BY A QUALIFIED INDIVIDUAL.

4. Rewire the second switch (this is the new auxiliary closed) with the two grey wires removed in step 1 of the REMOVING OLD LIMIT BRACKET instructions. The grey wire coming from #10 on the terminal block goes to the C and the grey wire coming from #1 on the terminal block to the NC.

INSTALLING NEW LIMIT BRACKET:

1. Install the auxiliary open limit switch removed from the old bracket in step 4 of the REMOVING OLD LIMIT BRACKET instructions to the new bracket with the original hardware.

2. Install the new bracket on the panel in the same manner as the old bracket was removed.

3. Rewire the switch with the yellow and orange wire removed in step 2 of the REMOVING OLD LIMIT BRACKET instructions. The yellow wire coming from #7 on the terminal block goes to the C and orange wire coming from #1 on the terminal block goes to the NC.

ORIGINAL AUXILIARY OPEN SWITCH

NOTE: Other components not

shown in box for easier viewing.

ORIGINAL OPEN SWITCH

ORIGINAL BRACKET MOUNTING SCREWS

NEW DOUBLE SWITCH

NEW SWITCH BRACKET

NEW CLOSE SWITCH

NEW AUXILIARY CLOSE SWITCH