Alignment Of Pump-Motor Unit; Extra Support For Bearing Housing - Calpeda N Instrucciones De Uso

6.4.4. Alignment of pump-motor unit

The pump-motor units positioned on a baseplate
and with a flexible coupling are aligned before leaving
the factory.
The pump and motor assembly can lose alignment
during shipping. Final alignment must be accompli-
shed in the field.
After installation is completed with tightening of
anchor bolts and connection of pipes,
alignment of
rechecked before starting the pump. If necessary,
the unit must be re-aligned.
6.4.5. Pump motor unit with N-EUPEX coupling
Remove the coupling guard and with a dial indicator or
thickness gauge, make sure the distance (3-4 mm)
between the halfcouplings is the same along the entire
periphery.
With a dial indicator or straight edge, check the alignment
(coaxiality) of the external part of the halfcouplings.
Control procedure must be performed at 4 diametrically
opposed, equidistant points on the periphery (fig. 6A).
straight edge
gage
Fig. 6A Alignment of coupling.
For adjustment, loosen or tighten the screws where
necessary in order to move the position of the support
feet on the baseplate and to add calibrated plates
between the feet and baseplate wherever these may
be required.
Make sure the rotor turns freely when moved by hand.
The alignment must be rechecked once the unit
attains its operating temperature.
While the foundation is still new and the unit has not
been fully tested under all operating conditions, verifi-
cation of alignment must be repeated at regular inter-
vals and, if necessary, alignment procedure must be
carried out again.
6.4.6. Pump motor unit with Rex-Viva coupling
Remove the coupling guard, loosen the screws and
remove the half-couplings.
With a dial indicator or straight edge, check the coaxial
alignment of the hubs fixed at motor shaft and pump
shaft.
Control procedure must be performed at 4 diametrically
opposed, equidistant points on the periphery (fig. 6B).
Fig. 6B Alignment of coupling.
For adjustment, loosen or tighten the screws where
necessary in order to move the position of the support
feet on the base-plate and add calibrated plates
N, N4 Rev. 13 - Operating Instructions
Sollevamento gruppo
pompa-motore
the coupling must
Lifting the
pump-motor unit
4.93.036
h
h1
s
R=s
15 25
w1
riga
straight edge
h
straight edge
h1
s
R=s
15 25
w1
between the feet and base-plate wherever these may
be required.
Reassemble the half-couplings following this sequence:
- Insert the two central screws of the first half-coupling.
- Insert and tighten the two central screws of the
second half-coupling at the required torque.
- Tighten the two central screws of the first half-cou-
pling at the required torque.
- Insert the two lateral screws of the first half-coupling.
- Insert and tighten the two lateral screws of the
be
second half-coupling at the required torque.
- Tighten the two lateral screws of the first half-coupling
at the required torque
- Repeat the sequence for the last screws.
Tighten the screws at the torque advised by the manu-
facturer on the coupling instructions.
Make sure the rotor turns freely when moved by hand.
The alignment must be rechecked once the unit attains
its operating temperature.
While the foundation is still new and the unit has not
been fully tested under all operating conditions, verifi-
cation of alignment must be repeated
at regular intervals and, if necessary, alignment proce-
dure must be carried
out again.
ATTENTION: poor baseplate installation and misali-
gnment of units or faulty connection of pipes will
cause vibration and early wear of elastic coupling
inserts, bearings, the seal and other internal parts
(see also sections 6.4.1., 6.4.3., 6.4.5.).

6.4.7. Extra support for bearing housing

In order to reduce problems caused by expansion or
residual external stress in pipes, N, N4 pumps may be
fitted with a support and anchoring foot which will help
to impede variation of alignment to an extent that might
cause damage.
The recommended dimensions are indicated (in mm)
in fig. 7.
d
PER VITI M12
110
160
Fig. 7 Optional support foot.
Dimensions EN 733
d w1
d
FÜR SCHRAUBEN M12
24 100
32 130
42 160
During alignment operations, before connection of pipe,
leave support foot screws untightened so as to avoid
stress by pipe strain or shifting of axis height.
110
The support foot must be placed on the base surface
160
and brought into contact with the support itself only
after completion of alignment procedure, which must
be re-checked after tightening the screws between
P057/1
pump casing feet and baseplate.
First tighten the screws joining the foot and the base
and then, the screw between the foot and the support.
In this way, alignment will not be altered by the support
foot.
d
FOR BOLTS M12
h
h1
s
R=s
15 25
w1
h s
h1
112÷180 77 4
180÷250 97 6
280÷315 132 6
Page 15 / 88
EN
110
160