Watson-Marlow SP40 - Manual (Page 45)

MAINTENANCE OF CAM AND ACTUATORS
42
.
Use the other 4 bolts and washers to place the adapter
with actuator onto the cam assembly.
Check if the cam turns smoothly.
Check if the pin reaches both ends of the groove by
manually turning the cam.
If not, the cam must be repositioned. This can be done
as follows. Remove the adapter with actuator from the
cam assembly. Loosen the bolt (D) and tap it with a
synthetic hammer. This will release the clamping sets
and the cam can now be adjusted. Retighten it
afterwards with a torque of 40 Nm. Be sure that the cam
(C) touches the collar of the shaft (E) and no extra axial
play exists when tightening bolt (D).
Mount the adapter with actuator onto the cam
mechanism and check again if the pin touches both
ends of the groove.
Check at the same time if the indicator ridge on top of
the actuator moves over the same angle left and right.
Position the indicator ridge pointing to the right or to the
left.
Fit the position indicator, so that it can point to either
“pumping” or “CIP. position” (refer to view 7 and 8 on
the drawing in section 11.1.10).
M
E
B
C
A
D
M
E
B
C
A
D
Make sure the pin (A) is in the middle of
the groove (B). An offset of more than 15°
can cause a wrong adjustment of the
actuator.