FAAC 950 BM - Terminal Descriptions

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FAAC MODEL 950 BM Door Operator
9. ADJUSTING THE SPRING
9.1. SPRING PRELOADING
If the door movement is not uniform (e.g.: door not closing comple-
tely or closing with too much force) proceed as follows to adjust the
spring preloading:
1) Cut power to the automated system and release from the door
thearmsecureddirectlyonthetransmissionshaft;
2) Rotatethearmuntilthestop-pointscrew(g.21ref.4)isinline
withtheinspectionslot(g.21ref.3);
3) Removethescrew,whilekeepingthearminposition;
4) To increase preloading: rotate the arm in opening direction until
thenextxingpositionofthestop-pointscrew(g.21ref.5)isin
linewiththeinspectionslotandxthescrewagain.
To reduce preloading: rotate the arm in closing direction until
thenextxingpositionofthestop-pointscrew(g.21ref.5)isin
linewiththeinspectionslotandxthescrewagain.
5) Reinstallthearmcorrectly(seepar.3.3.);
6) Run a new SETUP cycle.
9.2. CHECKING SPRING EFFICIENCY
Weadviseyoutoperiodicallychecktheefciencyofthespring-
this is the procedure:
1) SelecttheManualfunction;
2) Removetheprotectivedeviceofthedrivesystem(seeg.1ref.
6);
1) Withthedoorclosed,traceaverticallineonthespring(g.22
ref.1);
2) Openthedoorcompletely;
3) Check the line you had traced.
Ifthedistortionisnotuniformalongthewholespringheight(g.
22ref.2),butisirregular(g.22ref.3),lubricatethespring
withspecicslidinggrease.
Fig. 22
a b c
1
2
3
1 Closing limit-switch
2 Opening limit-switch
3 Slot for inspection of stop-point screw
4 Stop-point screw
5 Fixing positions of stop-point screw
5
5
5
4
Fig.21
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