Maintenance - Fluke 7341 User Manual

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.
•
A battery is used to maintain operating parameters in the unit. All operating
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.
If the fluid level is too low, the stability may be affected. 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.
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 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 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 Chapter 8, General Operation,
for more information about the different types of fluids used in calibration baths.
•
Depending on the cleanliness of the environment, a schedule should be set for
cleaning the condensing coil fins. Use low pressure compressed air directed at a
downward angle to remove lint and dust build-up on the condensing fin coils. The
schedule should be set dependent upon the laboratory environment to ensure that dust
does not build up on the fins hampering the efficiency of the bath, i.e. monthly,
quarterly.
•
If a hazardous material is spilt 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 fluids used in the
Warning
Chapter 12

Maintenance

12-1