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Part Number 471602
Fusible Link Replacement on
FD, DFD, ODFD, OFD, SSFD, SSDFD,
SEDFD and KFD Series
Curtain Fire Dampers
FSD, SEFSD, SSFSD, CFSD, and OFSD
Series
Combination Fire Smoke Dampers
INSTALLATION INSTRUCTIONS
1
3
4
2
Side cross-section view of
Curtain Fire Damper in wall
Replacing fusible link on a curtain fire damper:
1) Bend metal straps so they are straight (Fig. 1, item 3). Remove
separated fusible link (Fig. 1, item 4).
2) Push bottom of curtain blades to the top of the damper such that
the blades fold up like an accordion. (If the damper blades have
coil springs, use additional care when pushing the blades to the
top of the damper as the springs are strong and may cause injury
if blades are released.)
3) Slide the replacement fusible link onto the metal straps.
4) Bend the metal straps up to hold the fusible link in place.
Replacing fusible link on a combination fire smoke
damper:
1) If fail closed, disconnect power and/or air pressure from damper.
If fail open, apply power and/or air pressure to damper. Damper
should be in the full closed position.
2) Remove and discard the existing retaining clips (Fig.2, item 1)
and fusible link (Fig.2, item 2).
3) Install replacement fusible link as shown in the diagram
(temperature rating facing outward). The crankarm secured with
a bolt may require some minor rotation to align link with pins.
4) Install retaining clips in the groove of each of the pins holding the
fusible link.
5) Reconnect power.
Item # Description
1 Damper
2 Sleeve
3 Metal strap
4 Fusible link
Fig.1
1
2
Important!
Fusible link must be put
on with temperature rating
facing outward as shown
Fig. 2
Item # Description
1 Retaining clips
2 Fusible link
Note: When replacing fusible link, make sure it is the
same temperature. If a different temperature, consult
factory.