Amprobe PQ55A Power-Analyzer - Manual (Page 38)

Maintenance
When using the instrument in compliance with the users manual, no special
maintenance is required.
Cleaning
If the instrument is dirty after daily usage, it is advised to clean it by using a
damp cloth and a mild household detergent
� Prior to cleaning, ensure that instrument is switched off and disconnected from
external voltage supply and any other instruments connected (such as UUT,
control instruments, etc.).
☞ Never use acid detergents or dissolvants for cleaning.
Calibration Interval
We suggest a calibration interval of one year. If the instrument is used very often
or if it is used under rough conditions we recommend shorter intervals. If the
instrument is used few times only the calibration interval can be extended on to
3 years.
Replacement of batteries
If the symbol (5.15) is displayed change the batteries.
� Remove all test leads before opening the case.
� The safety references must be followed.
1) Using a screwdriver to remove the two screws from the bottom case (backside)
2) Remove the battery cover
3) Take out old batteries
4) Insert new batteries (respect battery polarity)
☞ The correct polarity of the batteries is indicated on the inside of the bottom case.
5) Close battery cover and tighten the screws.
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