Lift-Master 65 5502 User Manual

APPLICATION

Used to mechanically release single or bi-part sliding fire doors from the door operator. A fusible link holds a cylindrical weight attached to the door release. When the link melts, the weight drops and releases the door. This modification is for use with SD and GSD operators.

NOTE:

•

May not meet all building or regulatory codes; please consult factory for additional specifications.

• Refer to door manufacturer for proper installation and operation of door.

FUSIBLE LINK MODIFICATION

655502 "Single" and

655503 "Bi-Part"

Sliding Door Operators

PACKING LIST

DESCRIPTION 655502 655503

Key Hole Bracket 1 2 Fusible Link Bracket 1 2 Sash Chain 2 4 Fusible Link 1 2 "S" Hook 5 10 Eye Bolt 5/16" 1 2 Key Ring 1-1/4" 1 2 Hex Bolt 1/4-20 x 3" 8 16 Flange Nut 1/4" 8 16 Flange Nut 5/16" 1 2 Key Ring 5/8" 2 4 Weight Guide 1 2 Weight 1 2

FUSIBLE LINK INSTALLATION

INSTALLATION

1. Disconnect power to operator.

2. Mount chain retaining bracket to door approximately 4' above the floor and 2" off centerline of door (Figure 1).

3. Attach eye bolt to lower slot on disconnect assembly (Figure 1).

4. Secure the fusible link chain mounting bracket to the upper leading edge of the door (6 - 12" below the top) so that the fusible link will be in the door opening when the door is open (Figure 1).

5. Thread the fusible link chain through the eye bolt, then through the eyelet in the weight mechanism, and then up through the bottom of the disconnect pin.

6. Raise the weight to approximately 3' from floor level and engage the chain in the slot of the chain retaining bracket.

7. Couple the chain to itself around the weight so that the chain cannot move through the eyelet in the weight.

8. Disengage the chain and allow the weight to hang from the fusible link.

9. Leave a small amount of slack between the weight and the disconnect pin and fasten a key ring to the link on each side of the disconnect pin so that the chain cannot pass through the hole.

10. Cut off any excess chain leaving 6" to hang below the chain retaining bracket.

11. Fasten the key ring 1-1/4" to end of chain.

12. Mount the weight guide to the door with the weight protruding 3 - 4" above the guide (Figure 1).

BI-PART DOORS

Install the second fusible link assembly on the second door following the steps outlined above. Be sure that one link is hung lower than the other so they do not interfere with each other when the doors are fully closed (Figure 2).

TEST

Test the fusible link disconnect installation as follows. Manually remove the fusible link from the bracket and allow the weight to pull down on the disconnect pin. Verify that the door is disconnected and moves freely. If necessary, adjust spring on disconnect assembly by moving the top shaft collar up or down.

Reconnect power to operator.

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

ALL electrical connections MUST be made by a qualified individual.

WARNING

SPECIFICATIONS

FIGURE 1

FIGURE 2

4" Movement Allowable Clearance for Door Movement Between Wall and Operator.

7.5" Max.

6.0" Min.

17.13"

12.02"

Door Travel Plus 4.25'

17.46"

Chain Retaining Bracket

4" Movement Allowable Clearance for Door Movement Between Wall and Operator.

Disconnect Assembly

Eye Bolt

13.0"

18.0" Min.

Fusible Link and Mounting Bracket

Cylindrical Weight

7.5" Max.

6.0" Min.

0.5"

13.08"

20.53"

Eye Bolt

Door Travel Plus 4.25'

24.0" 24.0"

"S" Hook

Cylindrical Weight

Fusible Link

"S" Hook

Cylindrical Weight

13.0"

Eye Bolt