Ensure air vents and internal air tunnels are kept free from dust during
operation.
The cooling fans should be replaced after 40,000 hours of cumulative
operation. This life rating is for guidance only and is subject to ideal
environmental operating conditions. Replace any fan that fails or
becomes slow or noisy, immediately. Replacement fan assemblies with
wiring loom and mating connector are available from the
manufacturer. It is recommended that replacement work must be
carried out by the manufacturer or an approved agent.