KSB Etaprime L, Installation & Operating Manual

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5 Installation at Site
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Etaprime L
CAUTION
Heat build-up in the bearing bracket
Damage to the bearing!
▷ Never insulate the bearing bracket, bearing bracket lantern and casing cover.
5.6 Checking the coupling alignment
DANGER
Inadmissible temperatures at the coupling or bearings due to misalignment of the
coupling
Explosion hazard!
Risk of burns!
▷ Make sure that the coupling is correctly aligned at all times.
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. 10:
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.