File:Bell telephone magazine (1922) (14569489569).jpg

Identifier: belltelephonevol3132mag00amerrich (find matches)
Title: Bell telephone magazine
Year: 1922 (1920s)
Authors: American Telephone and Telegraph Company American Telephone and Telegraph Company. Information Dept
Subjects: Telephone
Publisher: (New York, American Telephone and Telegraph Co., etc.)
Contributing Library: Prelinger Library
Digitizing Sponsor: Internet Archive

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pment was good;yet looking at the main-tenance bill every monthraised a question as tothe proper economic bal-ance between mainte- nance cost and the quality of serviceobtained. The situation was reviewed in1948, and a large-scale study wasstarted to determine what might bethe proper relationship. Central of-fice buildings of various types, in allparts of the country, were selected toparticipate In a long-term trial. A committee composed of Engi-neering and Plant men was estab-lished in each of these offices to con-trol the trial, protect the quality ofcustomer service, and insure againstany progressive deterioration ofequipment. Then all preventivemaintenance activity (except certainlubrication of power driven machin-ery) was temporarily suspended. Ascustomers reported their troubles,tabular records were kept; and asindications of need developed, pre-ventive routines were reestablished.In addition, plant people kept awatchful eye on the equipment and,as needs became evident, suitable
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Removing a cardjrom the trouble recorder: a more moderyiway of locating trouble than by laborious hand testing 210 Bell Telephojie Magazuie WINTER routines to care for such conditionswere also reestablisiied. Results of the study indicated that,although some routines had not beenperformed often enough, many hadbeen performed too often to paytheir way. Furthermore, there wasstrong evidence that even in two of-fices of the same type, the same rou-tines and routine frequencies werenot required. That is, the applica-tion and use of preventive mainte-nance routines must be tailored bythe Plant folks concerned to fit theneeds of their own office. Aids fordetermining the requirements forpreventive maintenance measures inany office were devised, and Plantpeople are now operating their of-fices on a qualitative preventivemaintenance basis. The application of the results ofthis study to central office mainte-

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