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12
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.
• The bath should be cleaned regularly to prevent a buildup of oil, salt, or
dust. Use a paint safe cleaning agent on all painted surfaces. Solvents
such as Trichloroethylene or Acetone may dull or dissolve the paint. The
stainless steel surfaces may be cleaned with solvents as necessary to re-
move salt.
• The stirring motor should be clean to allow proper cooling. Normally
only the outside surfaces will require any attention. If the inside of the
motor has become heavily loaded with salt or dust, blow it out with com-
pressed air. Follow normal safety procedures when using pressurized gas-
ses.
• 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.
• Salt requires little maintenance. There is very little evaporation with salt.
Periodic fluid level checks are sufficient.
• If a hazardous material is spilled on or inside the equipment, the user is
responsible for taking the appropriate decontamination steps as outlined
by the national safety council with respect to the material. MSDS sheets
applicable to all salt used in the bath should be kept in close proximity to
the instrument.
• If the mains supply cord becomes damaged, replace it with a cord with
the appropriate gauge wire for the current of the bath. If there are any
questions, contact an Authorized Service Center for more information.
• Before using any cleaning or decontamination method except those rec-
ommended by Hart, users should check with an Authorized Service Cen-
ter to be sure that the proposed method will not damage the equipment.
12 Maintenance
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