Addendum 2 - Shell /Tube Heat Exchanger Install and Service Recommendations
88
Quincy Compressor-QSI
®
Recommendations:
Replace gaskets when removing end castings. It is recommended that gaskets be soaked in oil to prevent corrosion
and ensure a tight seal.
Salt water should not be used in standard models. Use salt water in special models having 90/10 copper-nickel tubes,
tube sheets*, bronze bonnets and zinc anodes on the tube side. Brackish water or other corrosive fl uids may require
special materials of construction.
When zinc anodes are used for a particular application, they should be inspected two weeks after initial startup.
At this time, by visual inspection of the anode, determination of future inspection intervals can be made, based on the
actual corrosion rate of the zinc metal.
The zinc anodes must be replaced when 70% of the zinc volume has been consumed.
It may be necessary to drain the water chambers of the exchanger to protect it from damage by freezing temperatures.
Drains are provided in most standard models.
The oil chamber of the exchanger may become fi lled with sludge accumulation and require cleaning. It is recommend-
ed that the unit be fl ooded with a commercial solvent and left to soak for one-half hour. Back fl owing with the solvent
or regular oil will remove most sludge. Repeated soaking and back fl owing may be required, depending on the degree
of sludge build-up.
It may be necessary to clean the inside of the cooling tubes to remove any contamination and/or scale build up. It is
recommended that a fi fty-fi fty percent solution of inhibited muriatic acid and water may be used. For severe problems,
the use of a brush through the tubes may be of some help. Be sure to use a soft bristled brush to prevent scouring the
tube surface causing accelerated corrosion. Upon completion of cleaning, be certain that all chemicals are removed
from the shell side and the tube side before the heat exchanger is placed into service.
*Available on C/CA Series models only.
Summary of Contents for QSI 1000
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Page 11: ...Section I General Quincy Compressor QSI 5 MODEL IDENTIFICATION ...
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Page 65: ...Quincy Compressor QSI 59 THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 66: ...Appendix A Dimensional Drawings 60 Quincy Compressor QSI QSI 220 245 air cooled ...
Page 67: ...Appendix A Dimensional Drawings Quincy Compressor QSI 61 QSI 220 245 water cooled ...
Page 68: ...Appendix A Dimensional Drawings 62 Quincy Compressor QSI QSI 250 300 air cooled ...
Page 69: ...Appendix A Dimensional Drawings Quincy Compressor QSI 63 QSI 250 300 water cooled ...
Page 70: ...Appendix A Dimensional Drawings 64 Quincy Compressor QSI QSI 335 370 air cooled ...
Page 71: ...Appendix A Dimensional Drawings Quincy Compressor QSI 65 QSI 335 370 water cooled ...
Page 72: ...Appendix A Dimensional Drawings 66 Quincy Compressor QSI QSI 440 500 air cooled ...
Page 73: ...Appendix A Dimensional Drawings Quincy Compressor QSI 67 QSI 440 500 water cooled ...
Page 74: ...Appendix A Dimensional Drawings 68 Quincy Compressor QSI QSI 540 600 air cooled ...
Page 75: ...Appendix A Dimensional Drawings Quincy Compressor QSI 69 QSI 540 600 water cooled ...
Page 76: ...Appendix A Dimensional Drawings 70 Quincy Compressor QSI QSI 675 750 air cooled ...
Page 77: ...Appendix A Dimensional Drawings Quincy Compressor QSI 71 QSI 675 750 water cooled ...
Page 78: ...Appendix A Dimensional Drawings 72 Quincy Compressor QSI QSI 925 1000 air cooled ...
Page 79: ...Appendix A Dimensional Drawings Quincy Compressor QSI 73 QSI 925 1000 water cooled ...
Page 80: ...Appendix A Dimensional Drawings 74 Quincy Compressor QSI QSI 1175 1250 1400 1500 air cooled ...
Page 81: ...Appendix A Dimensional Drawings Quincy Compressor QSI 75 QSI 1175 1250 1400 1500 water cooled ...
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