Bray 92_93 Series FLO - Manual (Page 6)

4 All information herein is proprietary and confidential and may not be copied or reproduced without the expressed written consent of BRAY INTERNATIONAL, Inc.
The technical data herein is for general information only. Product suitability should be based solely upon customer’s detailed knowledge and experience with their application.
Series 92-93 Pneumatic Actuator
Operations and Maintenance Instructions
Mounting the Actuator to the Valve
The actuator is attached to the valve by means of
the mounting kit. Thread the studs into the proper
holes in the actuator, before installing the actua-
tor on the valve. The studs should be snug in the
bottom of the tapped holes; there is no need to
torque them. Install the actuator on the valve or
mounting bracket making sure that the base of the
actuator fits flat against the mounting flange. Use
the nuts and washers from the kit to complete the
installation. Torque the nuts in a diagonal pattern
to assure equal loading of the studs.
Setting the Travel Stops
The final step in the installation process is to check
the travel stop settings. The travel stops are set for
90° of travel at the factory; however, each installation
is different so they should be checked before putting
the valve in service. The actuators are designed
with a nominal 5° over or under travel at each end
of rotation. A screwdriver, an open end or box end
wrench and a hex wrench, all of the appropriate size,
are the only tools required to make the necessary
adjustments. Refer to Figure 1 below.
WARNING
Before setting the travel stops, the pneumatic air
supply must be completely disconnected from the
actuator, and all compressed air stored within the
actuator must be released. Auxiliary devices con-
nected to the actuator, such as tubing, ball valves,
solenoid air valves, valve positioners, etc. can
block the release of air from within the actuator.
Do not rely upon the features or controls of any
auxiliary device to release the air from inside the
actuator and render it safe for disassembly.
Remove the black position pointer to expose the
wrench flats on the top of the pinion.
Rotate the valve to the desired position using a
wrench on the pinion.
Loosen the lock nut on the travel stop screw. It is
not necessary to remove the nut completely. Us-
ing the hex wrench, turn the screw in or out until
the desired travel stop position is reached. While
holding the screw with the hex wrench, tighten the
lock nut with the wrench.
Replace the position indicator making certain the
pointer is aligned with the position of the valve,
open or closed.
Replace the position indicator making certain the
pointer is aligned with the position of the valve,
open or closed.
5°
5°
Figure 1
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