Maintenance - Fluke 7080 User Manual

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Maintenance

The calibration instrument has been designed with the utmost care. Ease of op-
eration and simplicity of maintenance have been a central theme in the product
development. Therefore, with proper care the instrument should require very
little maintenance. Avoid operating the instrument in dirty or dusty
environments.
• A battery is used to maintain operating parameters in the unit. All operat-
ing parameters, including calibration parameters should be checked on a
regular basis to insure accuracy and proper operation of the instrument.
See the troubleshooting section for the procedure on checking the status
of the battery.
• If the outside of the bath becomes soiled, it may be wiped clean with a
damp cloth and mild detergent. Do not use harsh chemicals on the surface
which may damage the paint.
• Periodically check the fluid level in the bath to ensure that the level has
not dropped. A drop in the fluid level affects the stability of the bath.
Changes in fluid level are dependent upon several factors specific to the
environment in which the equipment is used. A schedule cannot be out-
lined to meet each environmental setting. Therefore, the first year the bath
should be checked weekly with notes kept as to changes in bath fluid. Af-
ter the first year, the user can set up a maintenance schedule based on the
data specific to the application.
• Heat transfer medium lifetime is dependent upon the type of medium and
the environment. The fluid should be checked at least every month for the
first year and regularly thereafter. This fluid check provides a baseline for
knowledge of bath operation with clean, usable fluid. Once some fluids
have become compromised, the break down can occur rapidly. Particular
attention should be paid to the viscosity of the fluid. A significant change
in the viscosity can indicate that the fluid is contaminated, being used out-
side of its temperature limits, contains ice particles, or is close to a chemi-
cal breakdown. Once data has been gathered, a specific maintenance
schedule can be outline for the instrument. Refer to the General Operation
section (Section 8) for more information about the different types of flu-
ids used in calibration baths.
• Depending on the cleanliness of the environment, the internal parts (parts
behind the front cover only) of the cold bath should be cleaned and/or
checked at least every month for dust and dirt. Particular attention should
be paid to the condensing coil fins. The fins should be vacuumed or
brushed free of dust and dirt on a regular basis. Dust and dirt inhibit the
operation of the condensing coil and thus compromise the performance
and life-time of the cooling system.
• If a hazardous material is spilt on or inside the equipment, the user is re-
sponsible for taking the appropriate decontamination steps as outlined by
the national safety council with respect to the material. MSDS sheets ap-
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