Watson-Marlow SP40 - Manual (Page 50)

MAINTENANCE OF CAM AND ACTUATORS
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Make sure the valve block is connected to the actuator
body in such a way that ports 2 and 4 of the valve block
are connected to ports A and B of the actuator body
respectively.
8.6.3 Setting the valve controlled pneumatic
actuator response
In case the pneumatic actuator is controlled by a
solenoid 5/2 valve block one must adjust the air flow to
reduce the rotation speed of the cam in order to avoid
damage to the mechanism. This is done by adjusting
the resistance of the air exhausts. The main air supply
pressure does not need to be reduced.
For adjusting the air flow two regulating screws in the
gates 3 and 5 of the 5/2 valve block exist. The gate
numbers are clearly indicated on the housing of the 5/2
valve block.
The regulating screws (3) and (5) must be adjusted in
such way that the turning of the cam from normal to CIP
takes between 1 and 3 seconds. Finding the setting