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3.
MAINTENANCE
3.1
The switches and contactors should be occasionally examined for signs of wear
and contact erosion. Badly eroded contacts should be replaced immediately.
3.2
The voltage regulator should be regularly examined, particularly in respect of the
brushes, in order that the latter can be replaced before excessive wear has taken
place.
3.3
The intervals between inspection and renewal of the brushes will depend upon the
amount of usage. However, it should be remembered that extensive damage to
the regulator can result if the brushes are allowed to wear away to such an extent
that a loss of brush pressure occurs, thus causing arcing.
3.4
The occasional wiping of the regulator track with an alcohol moistened rag is re-
commended. If, however, the track is badly corroded, it should be cleaned with
very fine sand paper, ensuring a flat service is restored. Remove particles with a
fine brush, and finally cleanse with an alcohol moistened brush.
3.5
To remove the instrument from its case, the following procedure should be adopted:
a.
Remove the lid from the equipment.
b.
Place the instrument in the normal operating position and remove the four M6
posidrive, top panel fixing screws.
c.
Turn the unit over on to the front panel, ensuring the surface is protected,
remove the four M5 set screws, lift the equipment's case off.
