Controlled-products-systems-group 8550C-7 Manuale Utente Pagina 5

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5
2 Tighten the Belt
2.1 By hand,thread the spring trolley nut on the threaded shaft until it is finger tight against
the trolley.Do not use any tools.
Spring Trolley Nut
(To motor unit)
2.2 Insert a flathead screwdriver tip into one ofthe nut ring slots and brace itfirmly against the trolley.
Nut ring
slot
2.3 Tighten the spring trolley nut with an adjustable wrench or a 7/16" open end wrench abouta quarter turn until the spring releases and snaps the nutring againstthe trolley.This sets the spring to
optimumbelttension.
Nut Ring
Nut Ring
AFTER RELEASE
1-1/4"
(3.18 cm)
BEFORE
1"
(2.5 cm)
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