ISO 9001
10. Loosen the universal mounting clamp (making sure not to
move the damper shaft) and rotate the actuator approximately
5° in the direction which would open the damper.
11. Tighten the universal mounting clamp to the shaft, ensuring
that it is in the correct mounting position.
12. Manually rotate the actuator to align with universal bracket.
13. Pivot the universal bracket into place and secure both sides.
14. Tighten all fasteners. Tighten the two nuts on the clamp using
a 7/16” spanner or socket and apply 8.2 to 10.8 Nm of torque.
15. Check that the universal mounting clamp (or AM-709) pointer
mounting position is at 5°.
1
st
Issue
09/13
4 DBL153e
Correct universal clamp pointer
mounting position (after 5° Pre-
tensioning)
Jackshaft Installation (MA40-704X, MF40-7043, MS40-
7043Series)
The MA40-704X, MF40-7043 and MS40-7043 series actuators
are designed for use with jackshafts up to 16mm in diameter.
In most applications, the actuator may be mounted in the same
manner as a standard damper shaft application. If the jackshaft
diameter is larger than 16mm in diameter, the optional AM-710
universal clamp must be used.
Adjusting an Auxiliary Switch (where fi tted)
The MA40-704X-G01, MF40-7043-G01 and MS40-7043-G01
actuators include one built-in SPDT auxiliary switch which can
be used for interfacing or signalling (e.g., for fan start-up). The
switch is adjustable between 0° and 95° of rotation (0 to 1 scale).
To make an adjustment:
1. The actuator must be in its normal (spring return) position.
2. Use a
fl
at screw driver to rotate the switch pointer until it is at
the desired switch position on the 0 to 1 scale.
Rotation Limitation
The Stop Block is used in conjunction with the tab on the universal
clamp or the AM 709 position indicator. In order to function pro-
perly, the clamp or indicator must be mounted correctly.
The Stop Block is used in applications where a damper has a
designed rotation that is less than 90°, for example with a 45°
or 60° rotating damper.
1. Determine the amount of damper rotation required. The
actuator stop block provides limited rotation from 40° to 95.
2. Loosen the screw securing the stop block to the actuator.
Note: The actuator is shipped with the Stop Block mounted
to the ‘L’ side. If the damper application requires the ‘R’ side
face the installer, simply remove the Stop Block and screw
and move it to the new location.
Adjusting Stop Block for Limited Rotation
WIRING DIAGRAMS
Class 2 control and power lead wiring must be routed separa-
tely from line voltage wiring and any other non-class 2 circuits.
Line voltage, auxiliary switch and auxiliary switch leads must be
connected to a Class 1 circuit.
WARNING - these are spring return acutators. Keep clear of all
moving parts when power is removed. Only switch off power if
spring return is required.
Model
Series
Max cable lenght (m)
14 AWG
16 AWG 18 AWG
24Vac
MA40-7043-G00
335
213
134
MA40-7043-G01
24Vac
MF40-7043-G00
183
122
76
MF40-7043-G01
24Vac
MS40-7043-G00
213
131
82
MS40-7043-G01
24Vac
MA40-7041-G00
11,278
7,163
4,511
MA40-7041-G01
TWO POSITION CONTROL - 230V
TWO POSITION CONTROL - 24V
