ITT Goulds Pumps 3405, Инструкции по установке, эксплуатации и обслуживанию

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6. Check parallel misalignment - shaft axes parallel but not concentric-by laying straight edge across
both coupling rims at top, bottom and both sides. See
Figure 4: on page 13 .
Figure 4:
The unit will be in horizontal parallel alignment when the straight edge rests evenly on both halves
of the coupling at each side.
In order to secure vertical parallel alignment under actual operating conditions, the driver shaft must
be set 0.002-0.004"higher or lower than the pump shaft to compensate for vertical expansion.
Thin shim stock should be used under the driver feet to establish parallel alignment. (In some in-
stances, shims may be required under the pump feet.)
A suggested approximate cold setting for motor driven pumps is outlined below:
a) When pumping cold liquids, set the motor shaft .006" below the pump shaft.
b) When pumping hot liquids (200°F and over) set the motor and pump shafts at the same height.
Thin shim stock should be used under the driver feet to establish parallel alignment. (In some in-
stances, shims may be required under the pump feet).
7. Bear in mind always that alignment in one direction may alter the alignment in another. Check
through each alignment procedure after making any alignment alteration.
2.4 Piping - general
1. All piping must be supported independently of the pump. The piping should always "lineup" natu-
rally with the pump flanges. Never draw the piping into place by use of force at the flanged suc-
tion and discharge connections of the pump.
2. The piping, both suction and discharge, should be as short and direct as possible. Avoid all un-
necessary elbows, bends and fittings, as they increase the friction losses in the piping. The size
of pipe and fittings should be carefully selected and of sufficient size to keep the friction losses as
low as practical.
2.4 Piping - general
3405-3406-3416 Installation, Operation and Maintenance Instructions 13