ITT GOULDS PUMPS ICO i-FRAME, Инструкция по установке, эксплуатации и обслуживанию

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Liquid source above the pump
Check Explanation/comment Checked
Check that an isolation valve is installed in
the suction piping at a distance of at least
two times the pipe diameter from the suc-
tion inlet. This permits you to close the line during pump inspec-
tion and maintenance.
Do not use the isolation valve to throttle the pump.
Throttling can cause these problems:
• Loss of priming
• Excessive temperatures
• Damage to the pump
• Voiding the warranty
Make sure that the suction piping is free
from air pockets. This helps to prevent the occurrence of air and cavita-
tion in the pump inlet.
Check that the piping is level or slopes
downward from the liquid source. —
Make sure that no part of the suction pip-
ing extends below the suction flange of the
pump. —
Make sure that the suction piping is ade-
quately submerged below the surface of
the liquid source. This prevents air from entering the pump through a
suction vortex.
Example: Elbow close to the pump suction inlet
Correct Incorrect
The correct distance between the inlet flange of the
pump and the closest elbow must be at least five pipe di-
ameters.
1
2
1. Enough distance to prevent cavitation
2. Eccentric reducer with a level top
4.6 Piping checklists
Model ICO i-FRAME, ICOH i-FRAME Installation, Operation, and Maintenance Manual 39