l
Remove the end shield.
l
Rotate the end shield on the back housing to the orientation position you require. Make sure you
align the segments on the back housing with the segments on the end shield.
l
Tighten the screws by turning clockwise.
18.5 Assembling the support / Centering the rotor with the shim
ring
l
Place the two shim ring halfs between the back housing and support.
l
Tighten the screws on the support at the back of the housing, by turning them clockwise with a
wrench.
18.6 Checking the X-Dimension
The rotor and locking screw need to be fully tightened using the appropriate torque
value (see See Tightening torques on page 40).
l
Check the X-Dimension by measuring the distance from the rotor to the back housing, from the flat
part at the peak of the rotor curve.
X-Dimension tolerances
If the X-Dimension is not within the tolerances shown in the table below, take out the rotor and gate,
using the instructions in See Disassembling the pump on page 24. Next, take out the support unit to get
access to the shim ring. Peel off as many layers as needed to get the correct X-Dimension. Each layer is
0.05mm thick.
C800:
0.30
+0.05
mm / 0.012
+0.002
in
30
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