Operator Maintenance
Cleaning the Exterior 6
6-5
Cleaning the Exterior
To keep the calibrator looking like new, clean the case, front panel keys, and lens using a
soft cloth slightly dampened with either water or a non-abrasive mild cleaning solution
that is not harmful to plastics.
W Caution
Do not use aromatic hydrocarbons or chlorinated solvents for
cleaning. They can damage the plastic materials used in the
Calibrator.
What to Do In Case of Calibrator Failure
If an obvious failure occurs during operation (e.g. the display is not lit, the fan is not
turning), the Calibrator must be powered off immediately. First, check the line power
fuse located on the rear panel of the Calibrator. See “Accessing the Fuses” earlier in this
Chapter.
If a fault is obvious, that is a measurement range or an operating mode is not functioning,
the user cannot correct the fault. Contact the Fluke Service Center.
Subtle faults can cause different symptoms and have different causes. Usually, they cause
instability of some parameter. Subtle defects can be caused by events such as
unacceptable distortion or degraded insulation etc. In this case contact the Fluke Service
Center.
If the rules for correct operation are not adhered to, it may seem as if the calibrator has a
subtle defect. Some abnormalities may actually be due to circumstances outside of the
Calibrator, or operator error. See “Preparing the Calibrator for Operation” in Chapter 2 of
this manual. Most frequent cases of defects are:
• Mains voltage out of tolerance limits, unstable, distorted voltage or there are voltage
spikes present.
• Incorrect grounding of the mains circuit (bad connection of the ground terminal of the
mains outlet).
• Proximity to sources that have either high conducted or radiated electromagnetic fields.
• Strong electrostatic or electromagnetic fields which can cause major instability during
usage, particularly when working with high impedance (>1 MΩ).
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