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EN 5675-L
12�6 Bottom plate adjustment (CB & CP)
and the bottom plate (for optimum performance max 0.2 mm).
12�6�1 Instructions on how to adjust the bottom plate
To reset the clearance gap following wear:
(Note: when adjusting PE3 and CP pumps, steps 1, 2 and 3 do not apply)
1.
factory pre-set position or if the clearance gap has been previously adjusted. If previously adjusted proceed
to Step 4.
2. Remove the three screws (c) securing the bottom plate to the volute.
Attention: if, due to corrosion, the bottom plate does not release freely from the volute, DO NOT force it
releasing the three securing screws (f) and then remove the bottom plate by tapping it free from inside the
volute using a mallet and block of wood.
3. Rotate the bottom plate anti-clockwise through 45
4. Loosen the adjusting grub screws (d) and tighten the securing screws in the bottom plate evenly until the
impeller will lightly, but freely, rub against the bottom plate when rotated by hand.
5. Tighten the grub screws fully to secure the bottom plate in position (max. 33 Nm).
Factory pre-set position
Fixing lugs
Adjustment position
(c)
(d)
(b)
(a)
(e)
(e)
(e)
(f)
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