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MCL MT4000 Maintenance Manual

Twta amplifiers
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Download this manual See also: Installation Manual
Donald Surprenant
Engineering
Dave B. Marshall
Customer Service
TN4000-5
Technical Note
Preventative Maintenance Guide
For MT4000 TWTA
April 11, 2002
4/12/02
Date
4/12/02
Date

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Summary of Contents for MCL MT4000

  • Page 1 TN4000-5 Technical Note Preventative Maintenance Guide For MT4000 TWTA April 11, 2002 Donald Surprenant 4/12/02 Engineering Date Dave B. Marshall 4/12/02 Customer Service Date...
  • Page 2 TECHNICAL NOTE – PREVENTATIVE MAINTENANCE GUIDE FOR MT4000 4/11/2002 TABLE OF CONTENTS SAFETY SUMMARY......................3 Definitions of Warnings, Cautions and Notes ..............3 General Safety Precautions....................4 List of Hazards ......................5 SCOPE............................7 MOISTURE PREVENTION ....................7 MAINTENANCE SCHEDULE.....................7 Quarterly Maintenance ....................8 Annual Maintenance .....................8 Bi-Annual Maintenance....................9...

  • Page 3: Safety Summary

    TECHNICAL NOTE – PREVENTATIVE MAINTENANCE GUIDE FOR MT4000 4/11/2002 SAFETY SUMMARY Definitions of Warnings, Cautions and Notes WARNING AND CAUTION statements have been strategically placed in the text to emphasize certain steps or procedures for the protection of personnel (WARNING) or equipment (CAUTION).

  • Page 4: General Safety Precautions

    TECHNICAL NOTE – PREVENTATIVE MAINTENANCE GUIDE FOR MT4000 4/11/2002 General Safety Precautions The following are general safety precautions and instructions that personnel must understand and apply during many phases of operation and maintenance to ensure personnel safety and health and the protection of property. Portions of this information may be repeated in certain chapters of this publication for emphasis.

  • Page 5: List Of Hazards

    TECHNICAL NOTE – PREVENTATIVE MAINTENANCE GUIDE FOR MT4000 4/11/2002 List of Hazards The operation of this amplifier may involve some of the following hazards; any of them could result in serious harm to personnel if proper safety precautions are not taken.
  • Page 6 RF OVERDRIVE The unit may be damaged by drive levels as low as -17 dBm for the Model MT4000 depending upon the settings of the system attenuator. Please apply RF with caution. Always terminate RF input and output ports properly when AC power is supplied to the TWTA.

  • Page 7: Scope

    Do not operate this system when excessive moisture is present in the interior MAINTENANCE SCHEDULE The following table is showing the maintenance schedule for the MT4000. There are three maintenance intervals broken down into separate tables. The MT4000 should be inspected to permit early detection of wear or damage, which if properly corrected will prevent equipment malfunction or failure.

  • Page 8: Quarterly Maintenance

    TECHNICAL NOTE – PREVENTATIVE MAINTENANCE GUIDE FOR MT4000 4/11/2002 Quarterly Maintenance MAINTENANCE SCHEDULE A ITEM PROCEDURE Use a dry clean cloth, a soft bristle brush, a cloth moistened with warm Front Panel Control and Meter soapy water or diluted alcohol to clean the front panel.

  • Page 9: Bi-Annual Maintenance

    If you are equipped and able to perform High Voltage measurements, then follow TABLE C, if not, contact MCL Customer Service for assistance. TN4000-5 MCL, INC.
  • Page 10 TECHNICAL NOTE – PREVENTATIVE MAINTENANCE GUIDE FOR MT4000 4/11/2002 MAINTENANCE SCHEDULE C ITEM PROCEDURE Compare the tube nameplate value for Helix Voltage with the display value. For a slight adjustment (less than 100V +/-), follow these steps: Turn on the main breaker on the front panel.
  • Page 11 TECHNICAL NOTE – PREVENTATIVE MAINTENANCE GUIDE FOR MT4000 4/11/2002 TN4000-5 MCL, INC. 11 of 11...

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