7037/7038/7040/7041
User's Guide
54
user can set up a maintenance schedule based on the data specific to the
application.
•
Heat transfer medium lifetime is dependent upon the type of medium and the
environment. 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 outline for the instrument. Refer to the
General Operation
section 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 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 baths 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
recommended by Fluke Calibration, users should check with an Authorized
Service Center to be sure that the proposed method will not damage the
equipment.
•
If the instrument is used in a manner not in accordance with the equipment
design, the operation of the bath may be impaired or safety hazards may
arise.
•
The over-temperature cutout should be checked every 6 months to see that it
is working properly. In order to check the user selected cutout, follow the
controller directions for setting the cutout. Both the manual and the auto reset
option of the cutout should be checked. Set the bath temperature higher than
the cutout. Check to see if the display flashes cutout and the temperature is
decreasing.
W
Warning
When checking the over-temperature cutout, be sure that the
temperature limits of the bath fluid are not exceeded. Exceeding
the temperature limits of the bath fluid could cause harm to the
operator, lab, and instrument.
