Fluke 7312, Руководство пользователя

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13 Maintenance
•
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.
•
The calibration instrument has been designed with the utmost care. Ease
of operation 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.
•
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 sur-
face, 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
conditions in which the equipment is used. A schedule cannot be outlined
to meet each set of conditions. Therefore, the bath should be checked
weekly and adjustments made as required.
•
Heat transfer medium lifetime is dependent upon the type of medium and
the conditions of use. 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 rap-
idly. Particular attention should be paid to the viscosity of the fluid. A sig-
nificant change in the viscosity can indicate that the fluid is contaminated,
being used outside of its temperature limits, contains ice particles, or is
close to a chemical breakdown. Once data has been gathered, a specific
maintenance schedule can be outlined for the instrument. Refer to Section
9, General Operation, for more information about the different types of
fluids 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 lifetime of the cooling system.
•
If a hazardous material is split 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-
plicable to all fluids used in the baths should be kept in close proximity to
the instrument.
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13 Maintenance