ITT VJC, Инструкция по установке, эксплуатации и обслуживанию

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5 Installation Instructions - Vertical Pumps
5.1 Installation Instructions-Vertical Pumps
5.1.1 Location of pump
The unit should be located in a clean, dry area free from flooding. The area should provide adequate
space for maintenance and repair, considering complete disassembly and handling of equipment. The
unit should be positioned to provide the most efficient pipeline system.
5.1.2 Pump support
The pump support must be sufficiently substantial and level to give rigid support to the pump and to ab-
sorb vibration.
The bolts which secure the pump to the foundation should be 1/8 in. less in diameter than the holes in
the pump frame (size is shown on the certified dimension drawing).
CAUTION:
Provision must be made to support discharge piping independently from the pump to prevent
excessive loads and maintain pump-driver alignment.
5.1.3 Discharge piping
Short pipelines and a minimum of elbows and fittings result in the least amount of pipe friction during
discharge. Excessive friction losses result in insufficient head.
The pumps are not designed to carry loads imposed by the weight of the pipeline. The pipe must be sup-
ported independently near the pump to prevent any strain being transmitted to the pump.
Arrangements should be made to keep the pump from back-spinning severely during shutdown. On a
long discharge line, a non-slam check valve should be installed.
5.1.4
Sump
The sump must be screened to prevent any foreign objects from falling into the sump and damaging the
pump. The openings in the screening should be smaller than the openings in the pump impeller.
5.1.5 Direct connect - alignment
NOTICE:
Before beginning any alignment procedure make sure driver power is locked out.
The points at which alignment are checked and adjusted are:
• Initial Alignment is done prior to operation when the pump and the driver are at ambient tempera-
ture.
• Final Alignment is done after operation when the pump and driver are at operating temperature.
NOTICE:
Proper alignment is the responsibility of the installer and user of the unit.
5 Installation Instructions - Vertical Pumps
14 Model VJC Installation, Operation, and Maintenance Manual