Belimo AFB24-MFT - Rotation Limitation and Manual Override; Damper Rotation Limiting

800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA / CARIBBEAN
7
3
Rotation Limitation
T
he angle of rotation limiter, which is built into the actuator, is used in conjunction with
the tab on the universal clamp or IND-AFB position indicator. In order to function
p
roper
l
y, t
h
e c
l
amp or
i
n
di
cator must
b
e mounte
d
correct
l
y
.
See
F
ig
ure
A
.
T
he rotation limiter may not work in certain mounting orientations using the ZG-118
m
ountin
g
bracket. Limitin
g
the damper rotation must be accomplished by ad
j
ustin
g
the crank arm linkage
.
T
he built-in rotation limiter ma
y
be used in 2 wa
y
s to control the rotational out
p
ut of
the AFB, AFX series actuator. One use is in the a
pp
lication where a dam
p
er has a
d
esi
g
ned rotation less than 90°. An example would be a 45° or 60° rotatin
g
damper.
T
he other a
pp
lication would be to set a minimum dam
p
er
p
osition which can be easil
y
set or changed without having to remove the actuator from t
h
e
d
amper.
D
amper Rotat
i
on L
i
m
i
t
i
n
g
1. Determine the amount of dam
p
er rotation re
q
uired
.
2. Locate the Angle of Rotation Limiter on the actuator Figure
B
.
3
. Position the limiter to the desired position, makin
g
sure the locatin
g
“teeth” on the
l
imiter are en
g
a
g
ed into the locatin
g
holes on the actuator.
4.
F
asten t
h
e
li
m
i
ter
b
y screw
i
n
g
t
h
e attac
h
e
d
screw
.
5. Test the damper rotation either manually with the manual crank or apply power and
i
f required, a control si
g
nal. Re-ad
j
ust
i
f
n
ecessar
y.
I
nsta
ll
at
i
on
I
nstruct
i
on
s
Mechan
i
cal Installat
ion
F
I
GU
RE
B
9
Philips screwdriver
Z-AF For Replacing AF and NF Actuators
9
Nm
/
8
0
i
n-
lb
AF
..
N
F.
.
N40103 - 09/11 - Subject to change. © Belimo Aircontrols (USA), Inc.