Belimo AFB24-SR - Page 28

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7
4
I
nsta
ll
at
i
on
I
nstruct
i
on
s
Mec
h
a
ni
ca
l In
s
t
a
ll
a
ti
on
Manual Override
Th
e
AF
B,
AFX
series actuators can be manually positioned to ease installation or for
X
emergency pos
i
t
i
on
i
ng.
1
. The manual override will only work i
f
no power is available to the actuator.
2. Insert the manual crank (shipped with the actuator) into the hexagon hole located
o
n either side o
f
the actuator. An illustration
,
located on the label
,
shows the
loca
ti
o
n
.
3. Turn the crank in the direction shown on the label
(
clockwise on the “
C
W” side,
c
ounterclockwise on the “
CC
W” side). It will take approximately 23 revolutions to
r
otate the full 95° of rotation
.
4
. To lock the actuator in the required position,
f
lip the switch to the locked position
that is located to the ri
g
ht of the crank on the CCW side of the actuator
(
left of
the crank on the CW side
)
.
5
. The manual override may be disengaged in 2 ways.
- Flip the switch to the unlocked position and the actuator will go to its fail-safe
position.
-
A
pp
l
y power to w
i
re 1 an
d
2.
Th
e actuator w
ill
automat
i
ca
ll
y
di
sengage t
h
e
override function and will go to the “on” position in the case of the On/Off
versions. Or, in the case of the proportional versions,
g
o to the 0 si
g
nal
position and then
g
o to the position correspondin
g
to the control si
g
nal. The
actuator w
ill
now wor
k
norma
lly
.
C
CW Side Example:
W
i
nd
i
ng the
damper actuator
-
i
nsert cran
k
h
an
dle
- t
u
rn
ha
n
dle
i
n
di
r
ec
t
io
n
o
f
arro
w
Lock
i
ng the
d
amper actuator
-
Fli
p t
h
e
l
oc
k
sw
i
tc
h
to
t
h
e pos
i
t
i
on po
i
nt
i
n
g
to
t
h
e
“l
oc
k
e
d”
sym
b
o
l
Unlock
i
ng the
damper actuato
r
(
2 opt
i
ons
)
-
Flip
t
h
e
l
oc
k
sw
i
tc
h
to
th
e pos
i
t
i
on po
i
nt
i
n
g
to
th
e
“
un
l
oc
k
e
d”
sym
b
o
l
.
-
R
emote contro
l
by
s
upp
l
y
i
ng power to t
h
e
u
nit
fo
r > th
a
n
3
sec.
Testing the installation Without Power
T
he actuator
/
damper installation may be tested without power at the actuator. Refer
to the manual positioning section o
f
the instructions. Move the damper to its
f
ull
n
on-
f
ail-sa
f
e position using the manual crank. Disengage the manual position
m
echanism and have the damper go to full fail-safe position.
C
orrect any
m
echanical problems and retest
.
Auxiliary Switches
T
he AFB, AFX series actuators ma
y
be ordered with two built-in
S
PDT auxiliar
y
switches used
f
or sa
f
ety inter
f
acing or signaling,
f
or example,
f
or
f
an start-up. The
switch position near the
f
ail-sa
f
e position is
f
ixed at 10°. The other is adjustable
b
etween 10° and 90° o
f
rotation. The crank that is supplied with the actuator is used
to chan
g
e the switch position.
SWITCH RATING
Voltage Resistive Loa
d
I
nductive Loa
d
1
2
0
VA
C
3A
1.
03A
2
50 VA
C
3A
0.5
A
T
wo methods may be used to adjust the switching point of the adjustable switch
.
Meth
o
d 1 - See
F
i
g
ure
F
1 The actuator must be in its fail-safe position.
2
. Insert the crank handle into the torx shaped hole located in the center of the
a
dj
usta
bl
e sw
i
tc
h
po
i
nter
.
3.
G
ently rotate the crank until the switch pointer is at the desired switch point in
d
egrees as s
h
own.
AF
B
,
AFX
...
S
erie
s
.2
.4
.6
.8
.2
.4
.6
.8
.2
.4
.6
.8
F
IGURE F
M
et
h
o
d
2
- See
F
igure
G
1. Position the damper to the point at which you want the switch to activate. This
may be done by usin
g
the manual override or by providin
g
the appropriate
proportional si
g
nal to AFB24, AFX24… modulatin
g
type actuator. The position of
the switch pointer is not important durin
g
this ste
p
2
. Insert the crank into the torx shaped hole located in the center o
f
the ad
j
ustable
s
w
i
tc
h
po
i
nter
.
3.
G
ently rotate the switch pointer to just past the switch point indicating arrow as
s
hown.
AFB, AF
X
...
Se
ri
es
.2
.4
.6
.8
.2
.4
.6
.8
.2
.4
.6
.8
F
I
GU
RE
G
N40103 - 09
/
11 -
S
ub
j
ect to chan
g
e.
©
Belimo Aircontrols
(
U
S
A
)
, Inc.