Bettis Speed Control Option Installation Instructions

Bettis Speed Control Option Installation Instructions
Installation Instruction
DOC.QC4.SC.1 Rev. B
October 2015
Speed control option
Control Modules
Speed Control option
The module can be supplied with a Speed Control option.
One throttle is required for Spring Return actuators and up
to two for Double Acting actuators.
The speed control throttle controls the air flow in and out of
an air chamber and as such limits the speed of the “Opening” and “Closing” stroke simultaneously
O-ring seal
1 Mounting Speed Control throttle(s):
1 Remove the plug(s) at the side of the module and turn in
the throttle (1).
2 Spring Return actuators: Use the top entry only.
3 Double acting actuators: Use both bottom and top entries.
- For standard actuators, the top entry will throttle the
closing stroke.
- For standard actuators, the bottom entry will throttle the
opening stroke.
- For reverse acting actuators, the opposite strokes will
be throttled.
Double Acting:
Bottom and/or top entries.
2 Adjusting Speed Control throttle(s):
1 Remove the nut cap (2).
2 Clockwise rotation of the adjustment screw reduces the
speed.
3 Counter clockwise rotation of the adjustment screw increases the speed.
4 Replace the nut cap.
Speed control
Nut cover
Spring Return:
Top entry only.
2
Figure 1 Speed Control option
1
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