Dodge en221 User Manual

 

 

EN221 and EN310 Non-Spring Return Electronic Actuators 

EA0662R1

 

 

a. Actuator 

b.  U-bolt shaft adapter 

c. Position 

indicator 

d.  Shaft adapter locking 

clip 

e. Position 

indicator 

adapter 

f. Mounting 

bracket 

g. Mounting 

screws 

 

This installation instruction describes the steps for 
direct-coupled mounting of the EN221 and EN310 
series non-spring return (NSR) electronic actuators.  

EN221x 

EN310x 

 

Personal injury or loss of life may 
occur if you do not follow the 
procedures as specified. 

 

Equipment damage or loss of 
data may occur if you do not 
follow procedure as specified. 

EA0320R2

 

•  10 mm (13/32-inch) open-end wrench 
•  Drill 

- 

4 mm (5/32-inch) drill bit  

•  Phillips screwdriver 
•  Marker or pencil 
•  Adjustable pliers 

30 minutes 

The actuator is shipped from the factory with a 5° 
pre-load to ensure tight close-off of the damper. To 
release the pre-load, press the PUSH button before 
mounting the actuator. 

 

WARNING: 
Do not open the actuator.  

NOTE: 

You must place the actuator on the 
damper shaft so that the front of the 
actuator is accessible. The label and the 
manual override button are on the front 
side.  

1.  Place the actuator on the damper shaft with the 

front of the actuator accessible. The label and 
the manual override button are on the front side.  

2.  For the EN221B2x and EN310B2x only: 

Determine the rotation of the damper shaft. Set 
the direction of rotation arrow to match the 
rotation.  

 

3.  For all models: See Figure 3 and Figure 4 for 

clockwise-to-open (CW) installation. See Figure 
5 and Figure 6 for counterclockwise-to-open 
(CCW) installation. 

UL Doc. No. 129-272 

EAI/EN-1 

Dodge Engineering & Controls, Inc. 

Rev. 5, Jan., 2005