Specifications

2-25
JOHNSON CONTROLS
FORM 102.20-N1 (1109)
2
FIG. 2-35 – DIRECT COUPLED ON JACKSHAFT
DAMPER
SELF
DRILLING
SCREWS
EDGE CLIP
025-39067-002
ACTUATOR
SHAFT CLAMP
ROTATION
SELECTOR
ACTUATOR
MANUAL
CRANK
BEARING PLATE
MOUNTING BKT
MOUNTING
GROOVES
JACKSHAFT TO
BLADE LINKAGE
ACTUATOR
ccw cw
JACKSHAFT
SPRING HOSE
CLAMP(S)
LD12144
6. Manually operate the actuator to its fully actu-
ated position using the crank arm provided with
the actuator. Then release the spring to allow
the damper to go back to its original position.
This will verify the actuators spring rotation and
stroke.
7. Set the damper actuators rotation selector switch
to the proper rotation required to actuate the
damper.
Damper actuator rotation will always
be opposite the spring return rota-
tion.
ACTUATOR INSTALLATION
See Fig. 2-35
1. Remove the bearing plate from the damper frame
and jackshaft.
2. Slide the damper actuator onto the open end of
the shaft making sure that the proper spring return
position on the face of the actuator matches the
damper shafts rotation. If not, then reinstall the
actuator with it ipped over.
3. Reinstall the bearing plate to the damper frame
and jackshaft. Make sure spring hose clamps hold
the jackshaft securely.
4. Slide the damper actuator mounting bracket into
the actuator mounting grooves and fasten to the
damper frame using self drilling screws.
5. Tighten the actuator shaft clamp to the damper
jackshaft. Make sure at this point, the damper
shaft is completely rotated to its proper posi-
tion.