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Installation, Maintenance and Operation Manual
Please read and save these instructions. Read carefully before attempting to assemble, install, operate or maintain the product described.
Protect yourself and others by observing all safety information. Failure to comply with instructions could result in personal injury and/or
property damage! Retain instructions for future reference.
DynaQuip
MA Series Electric Actuator
Features
• 30% Duty cycle at ambient temperature and rated torque
• Thermal overload protection to guard motor against overheating
• Manual overrides on all standard models
• Rotates clockwise to close valve and counterclockwise to open valve
• Mechanical dial position indicator
• Self-locking gearing
Do not apply electric
power unless unit is
fully assembled and mounted.
Always disconnect electric power
source and relieve pressure in the
system before working on this unit.
It is recommended that eye protection
be worn while servicing the system.
Failure to comply with above warnings
could result in personal injury and/or
damage to the unit.
Manual Override
In the event of power failure, the
DynaQuip actuator may be cycled manu-
ally. Handwheel manual override is
always engaged. Actuators rotate clock-
wise to close valve and counterclockwise
to open valve. Failure to rotate in the
proper direction will cause limit switches
to malfunction.
Inspection Upon Receipt
1. Visually inspect to be sure actuator
has not been damaged in transit.
2. Verify that Model Number is correct
as ordered.
3. Verify that electrical supply voltage is
the same as specified on the actuator
label.
4. Verify that NEMA rating on label is
as required: Weatherproof/Corrosion
Resistant (NEMA 4).
5. Check that mounting bolt pattern
and output shaft/adapter config-
urations are as required.
Form 5SXXXX
Controls
®
6. Turn handwheel to be certain that
manual override and position indicator
are in working condition and have
not been damaged in transit.
Installation
1. Before mounting actuator, verify that
the torque requirement is less than
the output torque of the actuator.
2. Check that output shaft adapter
fits stem of valve or damper before
inserting into actuator.
3. Insert output shaft adapter into
actuator. Make sure fit is satisfactory.
4. Determine that actutator position,
open or closed, matches position of
equipment with which it is to be
mounted. Use manual override to
change position, if necessary.
5. Mount to top plate of valve, valve
bracket or damper. Be sure that base
of actuator is flush with top plate.
6. Insert bolts but do not tighten.
7. Use manual override to move stem of
valve or damper slightly to correct
side thrust or misalignment.
8. Manually place valve in either full
stroke position.
9. Tighten bolts using a cross pattern
and equally drawing bolts down to
finish.
Electrical Installation
Verify that the electrical supply voltage
is the same as required actuator voltage.
Printed in USA
194020 Rev B
Follow wiring diagram below. Use the
wiring diagram inside actuator cover for
voltages other than 115VAC.
NOTE: Electric power to terminals 1 &
3 will cause the camshaft to rotate
counterclockwise.
Electric power to terminals 1 & 4 will
cause the camshaft to rotate clockwise.
Field Wiring
Terminals:
Power 120 VAC 1-Phase
1 & 3 to Open
1 & 4 to Close
G
N
L
5 Open Indicator
CS
6 Close Indicator
1
3
4
5
6
7
LS1
LS2
MOTOR
LS - Limit Switch
CS - Control Switch
or Relay
A
B
C
D
E
F
LS3
LS4
DynaQuip Controls
MA Series Actuator
800-545-3636 www.dynaquip.com
MA SERIES
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