SystemAir PKI-C EI120S, Manual, Page: 18 / 63

Operations & Maintenance of fire dampers
Replacement of Fusible Link:
Heat fuse is located inside the damper casing. From the design point of view it is a part of the panel with
release device. Heat fuse consists of two parts connected with solder made of low- fusible alloy of non-steel
metals. In case of any reason it is necessary to exchange the heat fuse it is possible to do it through inspection
lid. When exchanging the heat fuse we push the pivot from the top with a cross-head screwdriver according to
fig. 39 and we replace the damaged heat fuse through inspection lid. After mounting the next fuse we release
the pivot. Then the exchange of the heat fuse is finished. Damaged heat fuse is possible to exchange only with
new original fuse supplied by damper producer.
Screwdriver
Press
Pivot
Heat fuse
Pivot
Fig. 39 Heat fuse replacement
Replacement of Fusible link (valid only for PK-I-R to diameter 200 mm including)
Heat fuse is located inside the damper casing. From the design point of view it is a part of the panel with
release device. Heat fuse consists of two parts connected with solder made of low- fusible alloy of non-steel
metals. In case of any reason it is necessary to exchange the heat fuse it is possible to do it through inspection
lid.
Please make the heat fuse replacement only when the damper leaf is closed! Heat fuse (1) has a
round opening on one side, which is put on the end of the rod (2) with spring to this end we push in direction to
the lever (3) and we release it from the lever jag according to the fig.39b. The process of mounting is
backwards as demounting. After mounting the new heat fuse we release rod and the heat fuse replacement is
finished. It is possible to replace damaged heat fuse only with new original fuse delivered by damper
producer.
Fig. 39b Heat fuse replacement (valid only for PK-I-R to diameter 200 mm including)