ITT Goulds Pumps 3755, Инструкция по установке, эксплуатации и обслуживанию

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Figure 5: Checking angular alignment, spider-insert type
5. Check parallel misalignment: shaft axes parallel but not concentric, by laying a straight edge
across both coupling rims at top, bottom and both sides. See
Figure 6: Checking parallel align-
ment on page 13 . This applies to both types of couplings.
The unit will be in horizontal alignment when the straight edge rests evenly on both halves of the
coupling at each side.
Figure 6: Checking parallel alignment
In order to secure vertical parallel alignment under actual operating conditions, the driver shaft
must be set higher or lower than the pump shaft to compensate for vertical expansion. A sug-
gested, approximate cold setting for motor driven pumps is outlined below:
1. When pumping cold liquids, or when pump bearings are being cooled, set the motor
shaft .006" below the pump shaft.
2. When pumping hot liquids (150º to 180ºF), and cooling is not used, set the motor and
pump shafts at same height.
Measure the difference in shaft heights by laying a straight edge across the shaft hubs
and checking with feelers.
2.3 Alignment - initial
Model 3755 Installation, Operation, and Maintenance Manual 13