T&R KV30-40, Operating And Maintenance Manual

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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 may 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
voltage 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
recommended. If however the track is badly corroded it should be cleaned with very
fine sand paper ensuring a flat surface is restored. Remove particles with a fine brush
and finally cleanse with an alcohol moistened brush.
3.5 The equipment's output cable should be kept clean and inspected regularly for damage.
This applies especially to the unscreened portion of the output cable.
3.6 To remove the set from its case. The following procedure must adopted:
a. Remove all four M5 posidrive fixing screws from the underside of the set.
(centre of rubber feet)
b. Place the set in the normal operating position, i.e. with the control panel horizontal.
c. Remove all six panel fixing screws.(M6 posidrive screws, nylon washers)
d. Remove the two M6 dome nuts from the lifting positions.
e. Screw on to the exposed threads of the lifting positions the tommy bars provided.
f. The set can now be lifted from the case taking care not to foul the supporting
brackets.