User Guide
F-09240-11 © Copyright 2008 TAC All Rights Reserved. 3
INSTALLATION
Inspection
Inspect the package for damage. If damaged, notify the appropriate carrier immediately.
If undamaged, open the package and inspect the device for obvious damage.
Return damaged products.
Requirements
•
Tools (not provided): Appropriate screwdriver for accessory kit mounting screws
• Training: Installer must be a qualified, experienced technician
• Appropriate accessories
• Wiring diagrams
 
W A R N I N G
• Disconnect the power supply (line power) before installation to prevent injury and equip-
ment damage.
• Make all connections in accordance with national and local electrical codes and the wir-
ing diagram.
• Use copper conductors only.
 
C A U T I O N 
• Do not exceed the ratings of the device(s).
• Do not apply power to the unit unless the damper linkage and/or the valve assembly have 
been installed.
• Avoid locations where excessive moisture, corrosive fumes, or vibration is present.
• Do not install insulation on any part of the actuator.
Mounting
The AM-321, AM-332, AM-341 and AM-342 accessory kits can be mounted onto the MC, 
MF, MP, MU and MUP type oil-submerged gear train actuators.
To mount an accessory kit onto a nonspring-return actuator, proceed as follows:
1. Remove the actuator terminal cover and remove the four screws which secure the actu-
ator back plate. Discard the back plate.
2. Remove the cover from the accessory kit.
3. Align, on the actuator, the back plate supplied with the accessory kit.
4. Align the interlocking drive discs on the accessory kit and the actuator. Note that each 
disc features one drive lug that is larger than the other, to ensure proper alignment. 
Assemble the accessory kit to the actuator so that the drive discs are engaged. Secure 
the accessory kit to the actuator with the four screws obtained when the actuator back 
plate was removed.
5. Replace the cover onto the accessory kit.
To mount an accessory kit onto a spring-return actuator, proceed as follows:
1. Remove and discard the back plate which comes assembled to the accessory kit.
2. Remove the four external screws from the face of the actuator’s spring-return housing.
 
C A U T I O N 
Do not remove the screws which have anti-backup heads from the actuator. These 
screws are used to secure the cover which retains the return spring in the casting.
3. Engage the drive discs on the accessory kit and the actuator. Note that each disc fea-
tures one drive lug that is larger than the other, to ensure proper alignment. Align the 
accessory base holes with those on the spring-return housing. Secure the accessory kit 
to the housing with the four screws previously removed from the spring-return case.








