Haefely 2830, User Manual, Page: 107 / 124

Care and Maintenance
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11 Care and Maintenance
11.1 Care and Maintenance
The instrument is basically service free, as long as the specified environmental conditions are
adhered to. As a result, service and maintenance is restricted to cleaning of the equipment and
calibration at intervals stipulated by the application for which the instrument is used.
The insulation of all high voltage cables should be periodically checked for damage. If any
damage to the insulation is detected then a new measuring cable should be ordered from
HAEFELY TEST AG.
If the instrument is to remain unused for a long time then it is recommended that steps are taken
to prevent ingress of dust inside the housing through air circulation (i.e. wrap or pack the
instrument).
If the instrument is to be used in extreme environmental conditions (e.g. unclean,
oily air with airborne metal or coal dust, high humidity etc.) then it should be protected
by building into a suitable housing with forced air filtering or similar suitable
protection. If such protective measures cannot be provided, then the instrument
should be periodically checked for contamination and promptly cleaned with suitable
cleanser when required. This kind of service work is particularly important if high
voltages are to be measured and should be performed by an authorised service
agent.
11.2 Cleaning the Instrument
The instrument should be cleaned with a lint free cloth, slightly moistened using mild household
cleanser, alcohol or spirits. Caustic cleansers and solvents (Tri, Chloroethene, etc.) should
definitely be avoided.
In particular, the protective glass of the display should be cleaned from time to time with a soft,
moist cloth such as used by opticians.
11.3 Instrument Calibration
When delivered new from the factory, the instrument is calibrated in accordance with the
calibration report provided. A periodical calibration of the instrument every two years is
recommended.