7 Servicing/Maintenance
56 of 84
Amarex N
2563.84/08-EN
CAUTION
Incorrect assembly
Clearance gap inaccurate!
▷
Pull the rotor assembly right up to the suction cover until it will not go any
further. Maintain this position until dimensions x and y have been measured.
Fig. 28:
Pulling the rotor assembly right up to the suction cover
6. Pull the rotor assembly right up to the suction cover until it will not go any
further.
2563:114
Fig. 29:
Adjusting impeller type S
h
Distance between suction cover and pump casing
s
Clearance gap between suction cover and impeller vanes
x
Distance between the upper side of the suction cover and the mounting holes
of the suction cover
y
Distance between the bottom of the pump casing and the impeller vanes
7. Measure dimension x on the suction cover
Dimension x is the distance between the upper side of the suction cover and the
mounting holes of the suction cover.
8. Measure dimension y between the pump casing and the impeller vanes.
Dimension y is the distance between the bottom of the pump casing and the
impeller vanes.
9. Use screws 904 to set dimension h (h = x + s - y),
where s (0.3 + -0.1) is the clearance between the suction cover and the impeller
vanes.
10. Tighten the suction cover with screws 914.03.
11. Rotate the impeller body to check that the impeller turns smoothly.
Make sure that the suction cover and impeller do not touch each other.
Summary of Contents for Amarex N series
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