CLEANING AND FLUSHING WATER-AND VAPOR-COOLING SYSTEMS
■Klystron amplifiers are well known as reliable, long-life microwave devices that provide the user with many thousands of hours of trouble-free operation. Inadequate or improper cooling due to scale or corrosion may curtail the life of the device. AEB-31 specifically delineates the recommendations for cooling-system maintenance.
■As mentioned in AEB-31, one of the major problems encountered in klystron cooling systems operating in the field is the formation of corrosion products. The klystron body and electromagnet cooling channels frequently become corroded, as does the surface of the water/vapor-cooled collector. This is due to the chemical reaction between free oxygen-laden coolant and the hot copper channel wall.
■Scale formation, which differs from corrosion, can result from the use of other than very pure water or maybe the byproduct of electrolysis between dissimilar metals in the heat-exchange system. As noted in AEB-31,this can be controlled by the usage of in-line purification loops.
■The practices that follow are suggested for cleaning the cooling passages of water/vapor-cooled klystrons and associated transmitter equipment. These procedures should be performed before installing a klystron and repeated as part of a periodic maintenance schedule while the klystron is in service.
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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4/28/03 |
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Rev. A |
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AEB-32;3364 |
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52 KB |
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