ITT GOULDS PUMPS 3316, 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 12 .
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" 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.)
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.
3. Piping must not be connected to the pump until the grout has thoroughly hardened and the foun-
dation bolts as well as driver and pump hold-down bolts have been tightened. See Section
2.7 Connection of piping on page 17 .
4. When handling liquids at elevated temperatures, arrangements must be made for expansion
loops or expansion joints so that the linear expansion of the pipe will not cause the pumping unit
to be drawn out of alignment.
2.4 Piping - general
12 3316 Installation, Operation and Maintenance Instructions