Honeywell MS7103 Instructions D'installation page 5

EXAMPLE: Setting shaft coupling to an approximate
fail-safe position of 30 degrees (as indi-
cated on the housing) limits stroke to 60
degrees. (See Fig. 7)
4. Install the shaft coupling at this position.
5. Replace the retainer clip on the shaft coupling using
the groove of the coupling.
45
Fig. 7. Stroke reduction.
Mounting
CAUTION
Device Malfunction Hazard.
Improper shaft coupling tightening causes
device malfunction.
Tighten shaft coupling with proper torque to pre-
vent damper shaft slippage.
CAUTION
Actuator Damage Hazard.
Using actuator as shaft bearing causes device
damage.
Use actuator only to supply rotational torque. Avoid
any side loads to actuator output coupling bear-
ings.
CAUTION
Equipment Damage Hazard.
Can damage the motor beyond repair.
Never turn the motor shaft by hand or with a
wrench.
Forcibly turning the motor shaft can damage the
gear train.
To mount the actuator to an external drive shaft of a
damper, proceed as follows:
1. Place actuator over damper shaft; and hold mount-
ing bracket in place. See Fig. 10.
2. Mark screw holes on damper housing.
3 NM SERIES SPRING RETURN DIRECT COUPLED ACTUATORS
3. Remove actuator and mounting bracket.
4. Drill or center-punch holes for mounting screws (or
5. Turn damper blades to desired normal (closed) posi-
6. Place actuator and mounting bracket back into posi-
7. Using 10 mm wrench, tighten shaft coupling
45
M37465
Fig. 8. Proper mounting to square damper shaft.
To achieve ingress protection rating IP54, the actuator
needs to be mounted according to Fig. 9. IP54 applies for
all mounting positions except with cable-up position
(crossed out) Fig. 9.
5
use no.10 self-tapping sheet metal screws).
tion.
tion and secure bracket to damper box with sheet
metal screws.
securely onto damper shaft using maximum 106 lb-
in. (12 Nm) torque.
NOTE: See Fig. 8 for proper mounting to a square
damper shaft.
DAMPER SHAFT
CABLE-UP POSITION
IP50
REGULAR POSITIONS
IP54
Fig. 9. Mounting actuator for IP compliance.
DAMPER SHAFT
M37467
31-00141M—06