Johnson Controls Range VA 9070 User Manual

VA-9070 Series Electric Rotary Actuators for Two-Position  
and Modulating Service  
Code No. LIT-977322  
Installation Instructions  
Issued May 29, 2007  
Supersedes March 14, 2005  
The motor full load current is noted on the  
nameplate of the actuator. The terminal strip  
accepts wire sizes ranging from 10 to 22 AWG  
(12 to 22 AWG for the servo). Do not use wire  
smaller than 18 AWG.  
Mounting  
When mounting the actuator in the standard position,  
orient the actuator with its handwheel in a vertical plane  
and parallel to the pipeline. When mounting the  
actuator on a vertical pipe, position the acutator with  
the conduit entries on the bottom to prevent  
condensation from entering the actuator by way of the  
conduit. In all cases, position the conduit to prevent  
drainage into the actuator.  
Terminate all field wiring at the actuator terminal  
strip in accordance with the wiring diagrams  
attached to the inside of the actuator cover.  
Properly seal the conduit connections to maintain  
the weatherproofed integrity of the actuator  
enclosure.  
Mount the actuator to the valve using the following  
procedure:  
1. Manually operate the actuator until the output shaft  
of the actuator lines up with the valve stem. If  
possible, use an intermediate position (such as  
valve disc/stem and actuator half-open).  
Setup and Adjustments  
You must set the electrical travel switches to trigger  
prior to reaching the mechanical travel stops. The  
travel switches are labeled for open and close. The  
cams are color-coded (green for open; red for closed).  
2. Place the proper sleeve adaptor (if required) onto  
the valve stem. Apply a small amount of grease to  
the sleeve adaptor to ease assembly.  
Manual travel stops are designed to prevent manual  
overtravel, not to stall the electric motor. The travel  
stops have an adjustment range of approximately  
10 degrees.  
3. Install the furnished mounting studs by threading  
them all the way into the actuator base. (Insert the  
short, threaded length into the actuator.)  
Closed Travel Switch and Travel Stop  
Adjustment  
1. Loosen the mechanical stop for the closed  
position, and back it off so that it does not interfere  
with actuator travel. The closed stop is located on  
the right when viewed from the travel stop side of  
the actuator.  
4. Mount the actuator onto the valve stem. Be sure  
the mounting studs are properly aligned with the  
holes in the top plate of the valve or the mounting  
bracket. If necessary, manually override the  
actuator to align the mounting studs with the  
mounting holes.  
5. Lower the actuator onto the valve, and secure it  
tightly in place with the furnished hex nuts and lock  
washers.  
2. Remove the indicator rotor by pulling it up. This  
action exposes the machined groove on the end of  
the camshaft, which is the reference for the valve  
disc position.  
Wiring  
Connect the actuator to field wiring:  
3. Manually operate the actuator handwheel  
Clockwise (CW) until the valve reaches the desired  
closed position.  
The heaters use approximately 0.5 amperes at  
110 volts.  
4. Rotate the red adjusting knob (by hand or with a  
flat-head screwdriver) until the cam lobe barely  
trips the switch from a CW direction.  
Remove the metal conduit plug for the power  
connection. Each actuator has two conduit entries  
(one for power and one for control). The remaining  
square-head conduit plug is weatherproofed but  
may eventually degrade. If the square-head  
conduit plug degrades, replace it with a metal plug.  
Note: If the rotation of one cam moves the other cam,  
hold the other knobs or cams during adjustment.  
VA-9070 Series Electric Rotary Actuators for Two-Position and Modulating  
Service Installation Instructions  
1
 

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