Features And Installation Of Pump And Motor Assembly; Alignment Of The Coupling; Alignment Tolerances And Coupling; Alignment Of Hot Pumps - M Pumps CN SEAL-MV Series User Manual

- Place the motor, insert thicknesses (about 5mm), under motor flange, so that the two shafts (pump and
motor) are coaxial.
- Leave a space of 3mm between the two elastic coupling halves, and then block the motor with the
provided screws.
-
14.8.

Features and installation of pump and motor assembly

The shafts of the pump and the motor have already been adjusted and aligned as an extension of one another.
For installation of the plant it is necessary to respect the sequence of actions:
- The base plate must be affixed to an horizontal plane, using also thickness;
- Tighten the nuts of the bolts;
- Check the shafts alignment and the motor alignment and repeat these actions if necessary (described in
the paragraph "Alignment of the coupling")

ALIGNMENT OF THE COUPLING

14.9.
 Place a straight edge on the coupling. Insert or remove any thickness necessary to bring the
motor at the correct height, so that the bottom edge of the ruler is placed on both halves of the
coupling for the entire length;
 Repeat the same check on both sides of
the coupling, at the height of the shaft.
Turn the motor shaft so that the bottom
edge of the straight edge touches both
halves of the coupling for the entire
length;
 Reinstall coupling guard.

14.10. Alignment tolerances and coupling

The maximum allowed tolerances for the two halves alignment of the coupling, to be verified with the
comparator, are:
TYPE OF COUPLING
Short flexible coupling
(3000 rpm)
Flexible coupling with
spacer (3000 rpm)
Flexible coupling with
spacer (3000 rpm)

14.11. Alignment of Hot pumps

When operation of a pump at less than, or greater, than 20°C temperature would cause alignment
changes due to thermal effects on the pump's pedestal position, final alignment must be made with the
pump and driver at their actual operating temperature; else there can be no assurance that pump and
driver are in alignment while operating. Driver temperature change from ambient to operation
temperature will also affect alignment. A hot check can only be made after the unit has been in
Pag. 22/49
OFFSET
0.05mm
0.07mm for spacer 100mm.
0.07mm for spacer 300mm.
Doc. ISM0076_MANUALE_CN SEAL-MV_ENG_REV04.DOCX
ANGLE
0.04mm for coupling with
diameter 100mm.
0.04mm for coupling with
diameter 100mm.
0.04mm for coupling with
diameter 200mm.