User guide

10 C745 User Guide Version 1.0
Air filter
The filter behind the air intake apertures on the front of the C475 amplifier should be cleaned or
replaced periodically, e.g. 3-6 months. (Filters in amplifiers located in more 'dirty' atmospheres may
require more frequent maintenance.) Access is via the blue front panel. The filter should be 'dry'
cleaned, using a vacuum cleaner preferably. Running the unit without a filter is not recommended
unless it is within a 'clean room'. Replacement filter material is available.
No other regular maintenance is required.
If you have any doubt about carrying out this procedure, refer to a service engineer or contact
your dealer.
If your amplifier develops a fault, please refer to your supplier for service and technical
support. Do not attempt to repair the fault yourself as this will invalidate the warranty.