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Dodge Engineering & Controls, Inc.
Toll Free (877) 334-2875 Fax: (978) 244-1422
Installation
EN221 and EN310 Non-Spring Return Electronic Actuators
EA0662R1
a
f
d
g
c
e
b
PUSH
Figure 1. Parts of the EN221 and EN310 Actuators.
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
Product Description
This installation instruction describes the steps for
direct-coupled mounting of the EN221 and EN310
series non-spring return (NSR) electronic actuators.
Product Numbers
EN221x
EN310x
Installation Conventions
WARNING:
Personal injury or loss of life may
occur if you do not follow the
procedures as specified.
CAUTION:
Equipment damage or loss of
data may occur if you do not
follow procedure as specified.
CLOCKWISE COUNTER CLOCKWISE
EA0320R2
Required Tools
• 10 mm (13/32-inch) open-end wrench
• Drill
- 4 mm (5/32-inch) drill bit
• Phillips screwdriver
• Marker or pencil
• Adjustable pliers
Expected Installation Time
30 minutes
Prerequisite
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.
Installation
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.
Figure 2. Direction of Rotation Switch.
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