SERIES 70 ELECTRIC ACTUATOR
Installation, Operation, and Maintenance Manual
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The Information contained herein shall not be copied, transferred, conveyed, or displayed in any manner
that would violate its proprietary nature without the express written permission of Bray International, Inc.
8.2
Wiring the Actuator
WARNING
Turn off all power and lockout/tag out service panel before installing or modifying
any electrical wiring.
1 . Take the actuator cover off . The cover should be kept on hand for reference .
2 . Wire the actuator as per the wiring diagram attached to the inside of the
actuator cover .
NOTICE
1 . Power and control wiring should use separate conduit entries .
2 . A minimum of 18 AWG wire is recommended for all field wiring .
3 . Terminals directly mounted on the actuator switch plate accept wire sizes
ranging from 14 to 22 AWG .
4 . Terminals of internally mounted electronics modules accept wire sizes ranging
from 14 to 24 AWG .
5 . The conduit connections must be properly sealed to maintain the weatherproof
integrity of the actuator enclosure .
8.3
Setting Travel Limit Switches
NOTICE
If the unit came assembled to a valve, the switches have been factory-set and DO
NOT need adjustment.
Bray uses its patented cam design along with two SPDT mechanical switches to set
the ‘Open’ and ‘Closed’ position of the valve. The green cam actuates the ‘open’
switch when the actuator reaches the ‘open’ position. Similarly, the red cam actuates
the ‘closed’ switch when the actuator reaches the ‘closed’ position.
Standard factory setting of the travel limit switches allows 90° travel between open
and close positions. Cams for each switch are adjustable for applications where less
than 90-degree travel is desired between the open and closed positions.
Cam Locking Screw
Figure 6.
Two SPDT Travel Limit Switches
Follow the steps below to adjust the travel limit cams.
NOTE:
For Actuator Size 130, 180, ignore steps 1 and 10.
Green - Open
Red - Closed
