Lift-Master 65 7001 User Manual

CENTER MOUNT MODIFICATION

For Use With J Operator

657001

DESCRIPTION QTY

Instructions 1 Length Sash Chain 12' 1 Center Mount Assembly 1 Eyebolt 1/4-20 2 Key ring 1-1/4" 1 Hex Nut 1/4-20 4 Hex Bolt 3/8"-16 4 Split Lock Washer 1/4" 2

APPLICATION

This modification is available to models J and DJ operators. For use on sectional doors, must be factory supplied with operator.

FUNCTIONS

An additional stage of speed reduction is provided in the operator to reduce the output speed to 24 RPM. This allows the unit to be directly coupled in the center of the door shaft. Shaft couplings are not provided.

PREPARATION

Unpack kit to verify the parts listed are included. Refer to installation on reverse side.

FIGURE 1

PACKING LIST

To prevent possible SERIOUS INJURY or DEATH, disconnect electric power to operator BEFORE installing.

ALL installations and electrical connections MUST be made by a qualified individual.

WARNING

CENTER MOUNT MODIFICATION

NOTE: View shown as if looking through wall.

Door Shaft

Shaft Couplings (not provided)

When performing this modification the door should be closed and no tension on the doorshaft

1. Remove (2) frame connecting bracket bolts, be sure to leave bracket in same position (Figure 2).

2. Position center mount bracket assembly as shown (Figure 3). Install (2) 3/8-16 x 1" hex head bolts and (2) 3/8-16 serrated flange nuts to connect bracket, frame and connecting bracket (be sure the connecting bracket stays in the same position it was in when the bolts were removed in step one). Do not fully tighten the bolts at this time (Figure 2).

3. Install (2) 3/8-16 x 1" hex head bolts, (2) flat washers and (2) 3/8-16 serrated flange nuts through the slotted holes in the bracket assembly. Position flat washers over the slots. Do not fully tighten the bolts at this time (Figure 2).

4. Install and align sprockets A and B. Install chain, pivot bracket assembly to tighten chain (allow some slack) and tighten bolts.

5. Install operator into door shaft using shaft couplers (not provided) and provide suitable back hangs for the power head.

6. Extend the disconnect chain with the chain and key rings provided. Route the chain through the eye bolts taking care not to interfere with the door or operator mechanism. It may be necessary to add a helper spring somewhere in the disconnect chain to prevent the chain weight from disconnecting the release mechanism.

FIGURE 2

FIGURE 3

INSTALLATION INSTRUCTIONS

See Step 3

See Step 2

Sprocket “A”

Sprocket “B”

Frame Connecting Bracket (See Step 1)

Center Mount Bracket Assembly

Hardware Stack, (1) 3/8-16 x 1" Hex Head Bolt, (1) 3/8" Flatwasher and (1) 3/8-16 Serrated Flange Nut. (Typical on Both Sides)

Hardware Stack, (1) 3/8-16 x 1" Hex Head Bolt, (1) 3/8-16 Serrated Flange Nut. (Typical on Both Sides)