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By carrying out the functions mentioned in the previous section and all controls listed in the register
maintenance, the pump is ready for use.
Self-priming pumps and non self-priming pumps
V MODULAR pumps are self-priming:
self-priming feature. Use a back flow check valve to stop reverse flow when operating with suction lift,
should be avoided.
Coupling of the pump to the motor
If the pump and the motor are coupled respect the following sequences to proceed with the installation:
Fill the two elastic coupling halves on the pump and the motor.
Position the pump on the base plate.
Place the motor, insert thicknesses (about 5mm), under the feet, 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.
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
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 the protection.
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)
Pag. 12/32
Make sure the pump is always filled with the pumping liquid to maintain the
OFFSET
0.05mm
0.07mm for spcer 100mm.
Doc. ISM0023
Instruction Manual of series V MODULAR – Rev.02
ANGLE
0.04mm for coupling with diameter
100mm.
0.04mm for coupling with diameter
100mm.
dry run
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