Chapter 6
Routine Maintenance
6.1 General
The following paragraphs provide the information required to perform the required periodic
maintenance and basic guidelines for troubleshooting the 2105.
6.2 Periodic Maintenance
The 2105 requires little periodic maintenance other than regular performance of the calibration
procedure of Chapter 6. Maintenance which may be required is discussed in the following
paragraphs.
6.2.1 Cleaning
It is recommended that the 2105 be operated in a clean environment. However, if the
environment is dusty periodic cleaning of the unit will be necessary.
Loose dirt or dust which has collected on the exterior surfaces of the 2105 may be removed
with a soft cloth or brush. Any remaining dirt may be removed with a soft cloth dampened in a
mild soap and water solution.
Do not use abrasive cleaners.
The front panel may be cleaned with a soft cloth and a "Windex" type cleaner.
Do not use
petroleum based cleaners on the front panel.
If required, the 2105 interior may be cleaned by blowing with dry compressed air.
If the 2105 has become heavily soiled with dirt or by other contaminants it is recommended
that the unit be completely overhauled. Contact your local Valhalla Scientific Service Center for
details.
6.2.2 Tightening
Tightness of connections to the input terminals is important for safety and reliability of
measurements. Loose connections, especially when working with high current levels, may
cause excessive temperatures to build up on the shunt input terminals. This contact resistance
also requires the source to supply additional power in order to overcome it.
It is recommended that power be periodically removed and the integrity of connections
checked as they may have become relaxed.
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