8 Maintenance
The calibrationinstrument has been designed with the utmost care. Ease of op-
eration and simplicityof maintenance have been a central theme in the product
development.Therefore, with proper care the instrument should require very
little maintenance. Avoidoperating the instrument in an oily, wet, dirty, or
dusty environment.
•If the outside of the instrument 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.
•Be sure that the well of the furnace is kept clean and clear of any foreign
matter.Do not use fluids to clean out the well.
•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.
•If the mains supply cord becomes damaged, replace it with a cord with
the appropriate gauge wire for the current of the instrument. If there are
any questions, call Hart Scientific Customer Service for more informa-
tion.
•Before using any cleaning or decontamination method except those rec-
ommended by Hart, users should check with Hart Scientific Customer
Service to be sure that the proposed method will not damage the equip-
ment.
•If the instrument is used in a manner not in accordance with the equip-
ment design, the operation of the furnace may be impaired or safety haz-
ards may arise.
•The over-temperature cut-out should be checked every 6 months to ensure
that it is working properly. Set the unit to 300°C and let it stabilize. Turn
the adjustable cutout knob down until the cutout is activated. Turn the
knob back up and push the reset button.
•Periodically remove the equilibration block and use emery cloth to re-
move the oxidation build up on the block.
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8 Maintenance