Owner's manual
800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA
3
7
0
Manual Override Butt
o
n
10 VDC 10 VDC
2 VDC
Directi
o
n
o
f R
o
tati
o
n Switch
65°
Op
eratio
n
M
ec
h
a
ni
ca
l F
ea
t
u
r
es
Manual Override
Th
e
B
e
li
mo non-spr
i
n
g
return actuators
h
ave a
bl
ac
k
,
“
manua
l
overr
id
e
b
utton
”
located on the top o
f
the housing. Press this button and the gear train is
disengaged so the damper sha
f
t can be moved manually. Release the button and
t
he gear train is re-engaged.
Use the manual override to test the installation without power. For tight shut-o
ff
the
dam
p
er should close with 5° of actuator stroke left.
Direction of Rotation Switch
Non-spring return actuators have a reversing switch on the cover. Switch position
i
ndicates start point. For the non-spring return, with the switch in position 1, the
actuator rotates clockwise with an decrease in volta
g
e or current. With the switch
i
n position 0, the actuator rotates counterclockwise with an decrease in volta
g
e or
c
urren
t
.
The non-spring return rotates clockwise when the switch is in the 1 position and
p
ower is applied to wire #2. When power is applied to wire #3 the actuator rotates
c
ounter clockwise. Rotatin
g
the switch to 0 reverses the control lo
g
ic
.
Durin
g
checkout, the switch position can be temporarily reversed and the actuator
will reverse its direction. This allows the technician a
f
ast and easy way to chec
k
the actuator operation without having to switch wires or change settings on the
thermostat. When the check-out is com
p
lete, make sure the switch is
p
laced bac
k
to its ori
g
inal position
.
Mechanical Angle of Rotation Limiting
The ad
j
ustable stops are needed when there is no damper stop or if you want the
damper to stop rotatin
g
before it reaches its stops. The non-sprin
g
return actuators
c
an be indefinitely stalled in any position without harm.
1. Loosen the two end stops with a No. 2 Phillips head screwdriver being careful
not to unscrew the ca
p
tive nut under the slot
.
2.
M
ove t
h
e stops
(i
n 2.5° steps
)
to t
h
e
d
es
i
re
d
pos
i
t
i
on an
d
re-t
igh
ten t
h
e screws.
M40024 - 05/10 - Sub
j
ect to chan
g
e. © Belimo Aircontrols
(
USA
)
, Inc.