Siemens SQM53.467R2A3 Instructions techniques - Page 19
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SQM5... Reversing Actuators
Reversing Rotational Direction,
Continued
Counterclockwise
Figure 17. Reversing Rotational Direction on the ASZ Potentiometer.
GEAR WITH MARK "1" FOR
COUNTERCLOCKWISE ROTATION
POTENTIOMETER GEAR
ALIGNMENT POINTER
POTENTIOMETER GEAR
ATTACHMENT SCREW
Figure 17a. Reversing Rotational Direction on the ASZ Potentiometer (Gear Models).
Siemens Building Technologies, Inc.
POSITION
INDICATION
POINTER
POSITION
INDICATION
POINTER
BOARD
ALIGNMENT
SCREW
TERMINAL
BLOCK
POTENTIOMETER
3. Disconnect the blue and brown wires from the terminal block located on the ASZ...
potentiometer circuit board and reverse. The black wire remains connected to the
middle terminal. See Figures 17 and 17a.
4. Remove the white plastic actuator position-indicating dial by gently pulling while rotating
in the clockwise direction. See Figure 6.
5. The actuator position indicating pointer, located near the actuator gear end of the cam
drum, must point to the "0" mark on the actuator position scale (scale on the cam drum
nearest to the actuator gear end). Press and hold the black cam drum release button
while manually rotating the cam drum.
6. Loosen the black potentiometer cam attachment screw approximately one turn. Gently
wedge a small screwdriver between the potentiometer and the gray plastic housing.
Gently twist the screwdriver until the potentiometer releases from the cam drum shaft.
7. Change potentiometer end position:
•
Manually rotate the potentiometer position indication pointer exactly to the other
end mark (see Figure 17).
•
Gear models (see Figure 17a):
For clockwise rotation, manually rotate the potentiometer gear until the white line
next to the "0" mark on the potentiometer gear face is exactly in alignment with the
potentiometer gear alignment pointer.
For counterclockwise rotation, manually rotate the potentiometer gear until the
white line next to the "1" mark on the potentiometer gear face is exactly in
alignment with the potentiometer gear alignment pointer
Clockwise
GEAR WITH MARK "0"
FOR CLOCKWISE
ROTATION
POTENTIOMETER GEAR
ALIGNMENT POINTER
POTENTIOMETER GEAR
ATTACHMENT SCREW
Technical Instructions
Document No. 155-517P25
July 9, 2007
POSITION
INDICATION
POINTER
POSITION
INDICATION
POINTER
BOARD
ALIGNMENT
SCREW
TERMINAL
BLOCK
POTENTIOMETER
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