3
Series 71 – Electric Actuator
Installation, Operation and Maintenance Manual
3.2 QUALIFIED PERSONNEL
WARNING
The actuator must only be installed commissioned operated and repaired by qualified
personnel
Installation commissioning operation and maintenance must be performed under
strict observation of all applicable codes standards and safety regulations
As per this document, a qualified person is one who is trained in:
The operation and maintenance of electric equipment and systems in
accordance with established safety practices.
Procedures to energize, de-energize, ground, tag and lock electrical circuits
and equipment in accordance with established safety practices.
The proper use and care of personal protective equipment (PPE) in
accordance with established safety practices.
First aid.
4.0 INTRODUCTION
The Bray Series 71 is a quarter turn electric actuator with manual
declutchable override for use on any quarter turn valve or device requiring up
to 531 lbs-in (60 Nm) of torque. Standard operating speed is 30 seconds for
single phase line powered units. Operational speed of 24VAC/DC units are
dependent on torque and supply voltage. All units are rated for 50% duty, 5
minutes max on time.
25
30
35
40
45
50
55
60
21 22 23 24 25 26 27
Quarter Turn Speed [s]
Supply Voltage [V]
24V Speed versus Supply at 531 lb-in [60Nm]
24VAC
24VDC
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