BUSCH COBRA NC 0400 B Manuel D'installation Et De Maintenance page 15

WARNING
Bearing exchange - The bearings have to be exchanged every
25.000 operating hours, as a bearing breakdown would increase
the danger of explosion.
In accordance with the Instructions and Operating Manual of the
COBRA NC 400 B, the following servicing may be carried out:
l Checking and cleaning of the water cooling pipe-work
l Draining lubrication oils
l Draining or filling up the cooling liquid (recirculating cooling sys-
tem)
l Checking, cleaning or changing the air filter of the flushing device
l Cleaning the external parts such as the fan cover and cooler
Other work such as dismantling or rebuilding jobs as well as repair and
maintenance work may only be carried out by specialised Busch servi-
cing staff.
All cleaning has to be done with a damp cloth in order to avoid any
electrostatic charge and sparks discharge.
The electrical installation must be checked every 4'000 operating
hours with regard to its good operation and possible damage. This also
includes the vacuum pump controls and the equipotential.
Maintenance
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