Greenheck KFD Series User manual

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.

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