Watson-Marlow SP40 - Manual (Page 46)

MAINTENANCE OF CAM AND ACTUATORS
43
8.5 Direct pneumatic connection
Use a throttle valve and start with this valve almost
closed when adjusting the actuator response. The
adjustment should be as such that the turning of the
cam from pumping to CIP and vice versa takes between
1 and 3 seconds.
8.5.1 Clockwise pump operation
Pressurizing port A on the actuator will result in a
counter clockwise rotation of the actuator towards
"open" position. This brings the pump in pumping
position.
Pressurizing port B on the actuator will result in a
clockwise rotation of the actuator towards "closed"
position. This brings the pump in CIP position.
8.5.2 Counter clockwise pump operation
Pressurizing port A on the actuator will result in a
counter clockwise rotation of the actuator towards
"open" position. This brings the pump in CIP position.
Caution
When compressed air is supplied to the
actuator ports directly the air flow should
be reduced to prevent damage of the cam
mechanism by fast switching movements.