Figure 12: Top view
4.
Repeat steps 1 through 3 until indicator A reads .005 mm (.002 in.) or less.
5.
Re-check both horizontal and vertical readings to ensure adjustment of one did not disturb the
other. Correct as necessary.
3.5.2 Parallel alignment
A unit is in parallel alignment when indicator P (parallel indicator) does not vary by more than .005 mm
(.002 in.) as measured at four points 90° apart at operating temperature. Note the preliminary vertical
cold setting criteria, Table 3.
Vertical Correction (Top-to-Bottom)
1.
Zero indicator P at top dead center of coupling (12 o’clock) half Y (Fig. 10).
2.
Rotate indicator to bottom dead center (6 o’clock). Observe needle and record reading.
3.
Negative Reading
- Coupling half X is lower than coupling half Y. Correct by removing shims of
thickness equal to half of the indicator reading under each driver foot.
Positive Reading
- Coupling half X is higher than coupling half Y. Correct by adding shims of
thickness equal to half of the indicator reading from each driver foot (Fig. 13).
NOTICE:
Equal amounts of shims must be added to or removed from each driver foot. Otherwise the
vertical angular alignment will be affected.
Figure 13: Side view
4.
Repeat steps 1 through 3 until indicator reads within .05 mm (.002 in.) or less when hot, or per
Table 3 when cold.
Horizontal Correction (Side-to-Side)
1.
Zero indicator P on the left side of coupling half Y, 90° from top dead center (9 o’clock).
3.5 Measurement
20
3500XD Installation, Operation and Maintenance Instructions
Содержание Goulds Pumps 3500XD
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