Piping Checklists; General Piping Checklist - Goulds Pumps 3700 Installation, Operation And Maintenance Manual

Piping checklists

General piping checklist

Precautions
WARNING:
• Risk of premature failure. Casing deformation can result in misalignment and contact with
rotating parts, causing excess heat generation and sparks. Flange loads from the piping
system, including those from the thermal expansion of the piping, must not exceed the
limits of the pump.
• Risk of serious personal injury or property damage. Fasteners such as bolts and nuts are
critical to the safe and reliable operation of the product. Ensure appropriate use of
fasteners during installation or reassembly of the unit.
• Use fasteners of the proper size and material only.
• Replace all corroded fasteners.
• Ensure that all fasteners are properly tightened and that there are no missing fasteners.
CAUTION:
• Do not move the pump to the pipe. This could make final alignment impossible.
CAUTION:
Never draw piping into place at the flanged connections of the pump. This can impose
dangerous strains on the unit and cause misalignment between the pump and driver. Pipe
strain adversely affects the operation of the pump, which results in physical injury and damage
to the equipment.
Flange loads from the piping system, including those from the thermal expansion of the
piping, must not exceed the limits of the pump. Casing deformation can result in contact with
rotating parts, which can result in excess heat generation, sparks, and premature failure.
NOTICE:
Vary the capacity with the regulating valve in the discharge line. Never throttle the flow from the
suction side. This action can result in decreased performance, unexpected heat generation,
and equipment damage.
Piping guidelines
Guidelines for piping are given in the Hydraulic Institute Standards, available from: Hydraulic
Institute, 9 Sylvan Way, Parsippany, NJ 07054 and in API RP 686, and must be reviewed prior
to pump installation.
Alignment criteria for pump flanges
Type
Axial
Parallel
Concentric
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
Manual
Criteria
The flange gasket thickness is ±0.8 mm | 0.03 in.
Align the flange to be within 0.025 mm/mm to 0.8 mm/mm maximum 0.001 in./
in. to 0.03 in./in. of the flange diameter.
You can easily install the flange bolts by hand.
Installation
31