Bray 6A Series O&M Manual - Manual (Page 9)

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 6A Operation & Maintenance – field Connections
6A O & M : 9
Restrictors
The S6A is equipped with air restrictors to reduce the air output to
achieve actuating times of T > 1.5 s for small actuators. Restrictors
1 and 2 are used for this purpose.
Tools Needed:
• Hexagon socket 2.5 mm
Refer to Figure 3.
When turned clockwise, they reduce the air output and finally shut
it off.
In order to set the restrictors, it is recommended to close them and
then open them slowly.
In case of double-acting actuators, ensure that both restrictors
have approximately the same setting.
1 2
3
Figure 3
-
Air Restrictor
➀ Restrictor for Y1
➁ Restrictor for Y2, only in the version for double-acting
actuators
➂ Hexagon socket-head screw 2.5 mm
Purging
The S6A is equipped with a purge air switch that allows the
actuator to purge air either inside of the unit or directly outside.
When the enclosure is open, the purge air switch above the
pneumatic terminal strip on the pneumatic block can be accessed.
Tools Needed:
• Instrument Screwdriver
Refer to Figure 4.
In the IN position, the enclosure is flushed from inside with a
small volume of clean and dry instrument air.
In the OUT position, the purge air is directed towards outside of
the unit.
Figure 4 - Purge Air Switch
➀ Purge Air Switch
➁ Pneumatic Block