5 Installation at Site
30 of 72
HPK
CAUTION
Misalignment of pump and motor shafts
Damage to pump, motor and coupling!
▷
Always check the coupling after the pump has been installed and connected to
the piping.
▷
Also check the coupling of pump sets supplied with pump and motor mounted
on the same baseplate.
B
A
A
B
a)
b)
B
B
A
A
1
1
2
2
1
1
Fig. 11:
Checking the coupling alignment: Coupling without spacer sleeve (a) or Coupling with spacer sleeve (b)
1
Straight-edge
2
Gauge
ü
The coupling guard and its footboard, if any, have been removed.
1.
Loosen the support foot and re-tighten it without transmitting any stresses and
strains.
2.
Place the straight-edge axially on both coupling halves.
3.
Leave the straight-edge in this position and turn the coupling by hand.
The coupling is aligned correctly if the distances A and B to the respective shafts
are the same at all points around the circumference.
The radial and axial deviation between the two coupling halves must not exceed
0.1 mm, during standstill as well as at operating temperature and under inlet
pressure.
4.
Check the distance (dimension see general arrangement drawing) between the
two coupling halves around the circumference.
The coupling is correctly aligned if the distance between the two coupling
halves is the same at all points around the circumference.
The radial and axial deviation between the two coupling halves must not exceed
0.1 mm, during standstill as well as at operating temperature and under inlet
pressure.
5.
If alignment is correct, re-install the coupling guard and its footboard, if any.
Checking the coupling alignment with a laser tool
Coupling alignment may also be checked with a laser tool. Observe the
documentation provided by the manufacturer of the measuring instrument.
5.7 Aligning the pump and motor
After having installed the pump set and connected the piping, check the coupling
alignment and, if required, re-align the pump set (with the motor).
Any differences in shaft centre height between the pump and the motor are
compensated by means of shims.
Summary of Contents for HPK
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