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• ADJUST THE SENSITIVITY ADJUSTMENTS ENOUGH TO ALLOW THE DOOR TO OPERATE, BUT NOT SO FIRMLY AS TO EXERT EXCESSIVE PRESSURE ON AN OBSTRUCTION BEFORE REVERSING. • AFTER INSTALLING THE OPENER, THE DOOR SHOULD REVERSE WHEN IT CONTACTS A 1-1/2" HIGH OBJECT (A PIECE OF STANDARD 2 X 4 BOARD LAID FLAT) ON THE FLOOR. B: IMPORTANT INSTALLATION 7 WARNING SPRINGS, PULLEYS, CABLES AND MOUNTING HARDWARE USED TO BALANCE YOUR GARAGE DOOR ARE UNDER EXTREME TENSION AT ALL TIMES AND CAN CAUSE SEVERE INJURY OR DEATH IF DISTURBED. DO NOT ATTEMPT ADJUSTMENT. FRONT MOUNTING BRACKET MUST BE INSTALLED TO A STRUCTURAL SUPPORT (STUD) ON THE HEADER WALL. FAILURE TO DO SO COULD CAUSE SENSING SYSTEM TO MALFUNCTION, RESULTING IN ENTRAPMENT, INJURY OR DEATH. REINFORCE HEADER IF NECESSARY USING A 2 x 6 AND LAG SCREWS (NOT PROVIDED). WARNING IMPORTANT! IDENTIFY YOUR DOOR TYPE FROM THOSE ILLUSTRATED BELOW AND FOLLOW INSTRUCTIONS FOR THAT TYPE OF DOOR STEP 1: Mounting the Front Bracket — Sectional Doors and One- Piece Doors with Track (For One-Piece Doors without track see Step 1A, next): Mark a vertical centerline on the header above the door. By manually raising the door, determine the high arc of the door’s travel (see illustration, above left) and using a level, transfer this measurement to the header (see illustration at left). Draw a horizontal line, crossing the previously drawn centerline, at this point. Install the Front Mounting Bracket securely wit lag screws as shown on the following page. If necessary, reinforce the header with steel angle iron or wood to ensure a secure mount. C: INSTALLING THE OPERATOR HORIZONTAL LINE VERTICAL CENTERLINE 104369 SECTIONAL DOOR CURVED TRACK ONE PIECE DOOR HORIZONTAL TRACK JAMB HARDWARE HIGH ARC OF DOOR TRAVEL HIGH ARC OF DOOR TRAVEL TRACK TRACK DOOR DOOR FOR THESE TYPES OF DOORS USE 1/3 HP MODEL 6000 OR 1/2 HP MODEL 6500 OR 6500-P. USE 7 FT, 8 FT OR 10 FT RAIL (MATCH DOOR HEIGHT) 104367 ONE PIECE DOOR NO TRACK JAMB HARDWARE ONE PIECE DOOR NO TRACK PIVOT HARDWARE DOOR HIGH ARC OF DOOR TRAVEL DOOR JAMB HARDWARE HIGH ARC OF DOOR TRAVEL PIVOT FOR THESE TYPES OF DOORS USE 1/2 HP MODEL J6500. USE 7J RAIL (FOR DOOR HEIGHT UP TO 8 FT) 104368 C: INSTALLING THE OPERATOR Highest Point of Travel Measure Distance Door to Floor Garage Floor Header Bracket Bracket Distance Above Floor (See Chart) STEP 1A: Mounting the Front Bracket — One Piece Doors Without Track: Mark a vertical centerline on the header above the door. Manually raise the door to its high arc position and temporarily clamp in that position. With the door in this high arc position, measure the distance from the top of the door to the floor (see figure at left). Subtract the actual door height from the high arc distance to the floor. This is the high arc rise of the door. Unclamp and close the door. Using the table below, draw a horizontal line at the appropriate height above the door to intersect with the vertical centerline. HIGH ARC RISE HIGH ARC RISE HORIZONTAL LINE 4 INCHES 6 INCHES 4 TO 8 INCHES 11 INCHES 8 TO 12 INCHES 16 INCHES Mount the Front Mounting Bracket securely with lag screws as shown in figure below. If necessary, reinforce the header with steel angle iron or wood to ensure a secure mount. VERTICAL 104371 CENTERLINE LAG SCREWS 5/16” X 1-7/8” HIGH ARC (RISE) HORIZONTAL LINE 8 9 C: INSTALLING THE OPERATOR STEP 2: Raise the Tee Rail so that the Front Idler Bracket and Front Mounting Bracket align. Insert bolt and tighten nut loosely for now. Later in the installation, this nut must be tightened securely. STEP 3 — Sectional Doors and One Piece Doors with Track: Raise the Opener and rest the Power Unit on a ladder or other sturdy support. Open the door the full open position. Allow 2" of space between the Tee Rail and the top section of the door (as shown in the illustration, below, far left). STEP 3A — One Piece Doors without Track: Raise the opener and rest the power unit on a ladder or other sturdy support. Open the door to the high arc position. Allow 2” of space between the tee rail and the door (at the high arc position) as shown in the illustration, below, left. The opener will be angled as shown. This is necessary for proper operation. NOTE: Since the Opener will be secured permanently in this position, open and close the door a few times to be sure the door does not rub on the Tee Rail and that you have allowed the proper clearances before proceeding. STEP 4: Mount Power Head to Ceiling: Since there is such variety in ceiling structures, all the mounting possibilities for the Power Unit cannot be illustrated here. The main concern is mounting the Power Unit securely to the ceiling joists for operational strength, rigidity and safety. Although there are a series of mounting slots provided on the power unit, try to secure the mounting straps in the slots closest to the front. Mounting may usually be accomplished using standard 1-1/4“ perforated steel angle available at most hardware stores. If in doubt about location of, and a...

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