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エンジン Belimo FS SeriesのPDF インストラクションシートをオンラインで閲覧またはダウンロードできます。Belimo FS Series 18 ページ。 Replacement of multiproducts motors
Belimo FS Series にも: 取扱説明書 (20 ページ), 交換 (19 ページ)

Belimo FS Series インストラクションシート
In above examples, the extraneous parts are removed and the Belimo dropped onto the
damper shaft.

Shaft Springs and Fusible Links

In the examples below there is a spring wrapped around the damper shaft
with a fusible link holding it (arrows). The link prevents the spring from
slamming the damper blades closed. When it melts at 165°F the spring is
released.
This is the fire damper function.
INSTRUCTION SHEET
Replacement of Multiproducts motors with Belimo FSxx Series
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