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.
•
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.
•
When using silicon oil, the bath will require periodic maintenance. The
silicon oil will condense on the bath during normal operation due to the
outgasing of the oil. How often and how long the bath is operated at
higher temperatures determines how often the maintenance will have to
be performed. Simply wipe down the oily areas of the bath with a mild
degreaser such as 409
®
. Do not spray the degreaser directly on the bath.
Spray the degreaser on a cloth and wipe the bath down with the cloth. Re-
peat the process as often as necessary to keep the oil from collecting on
the bath. If oil is allowed to collect on the bath, it may run into the bath
and collect on the interior of the bath causing internal damage that may
affect the lifetime of the instrument.
•
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.
WARNING:
Before servicing the instrument, disconnect the power mains.
•
Periodically remove the top cover of the bath and wipe out oil around the
outside of the gasket. In order to do this, remove the four screws on the
top surface and the two screws at the rear of the bath. Lift the cover just
far enough to wipe out the collected oil.
•
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-
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12 Maintenance
