En
gl
is
h (
G
B)
16
4.5 Final alignment
1. Let the pump run until it has reached its operating
temperature under normal operating conditions
(approximately 1 hour).
2. Stop the pump.
3. Remove the coupling guard.
4. Check the alignment on the coupling by means of
dial gauges. See below.
Checking coupling alignment by means of dial
gauges
Alternatively, use laser equipment for the final
alignment.
Fig. 20
The end view of the coupling is seen
from the motor
The coupling alignment procedure has four steps:
Parallel alignment - vertically
1. Mount the dial gauge (2) in position 0 ° (12
o'clock). See fig.
.
2. Make the index lines on the two coupling halves.
.
3. Set the dial gauge pointer to zero, turn the motor
and pump shaft simultaneously until the dial
gauge is in position 180 ° (6 o'clock) and check
that the index lines are still in line.
4. Read the dial gauge (2). If the dial gauge shows
a deflection exceeding 0.2 mm, add or remove
the shims under the motor until the reading of the
dial gauge is within the allowable tolerance of 0.2
mm.
Parallel alignment - horizontally
1. Turn the motor and pump shaft to 270 ° (9
o'clock).
2. Set the dial gauge pointer to zero, turn the motor
and pump shaft to 90 ° (3 o'clock) and check that
the index lines are still in line.
3. Read the dial gauge. If the dial gauge shows a
deflection exceeding 0.2 mm, move the motor
sideways until the reading of the dial gauge is
within the allowable tolerance of 0.2 mm.
4. Remove the dial gauge (2).
Angular alignment - horizontally
1. Mount the dial gauge (1) in position 90 ° (3
o'clock). See fig.
2. Make the index lines on the two coupling halves.
See fig.
3. Set the dial gauge pointer to zero, turn the motor
and pump shaft simultaneously until the dial
gauge is in position 270 ° (9 o'clock) and check
that the index lines are still in line.
4. Read the dial gauge (1). If the dial gauge shows
a deflection exceeding 0.2 mm, move the motor
sideways until the deflection is halved.
5. Set the dial gauge pointer to zero, turn the motor
and pump shaft simultaneously until the dial
gauge is in position 90 ° (3 o'clock) and read the
dial gauge (1) again.
6. Now the reading must be within the allowable
tolerance of 0.2 mm. If not, repeat the procedure.
Make the final alignment by shimming the
motor only.
TM
0
3
0
210
4
504
TM0
3
2
93
9 4
9
0
5
0°
90°
180°
270°
Dial gauge (2) for
parallel alignment
Index
line
Dial gauge (1) for angular
alignment
(12)
(3)
(6)
(9)
TM0
3
2
94
1 4
9
0
5
TM
03
29
42
49
05
