How do I clean the heat exchanger?

I have recently purchased a Beko condenser tumble dryer. The instructions say I have to clean the heat exchanger once a month but does not tell me how to clean it! Can anyone help?
Annie, November 2008
thank you so much you just saved me loads of money...i was going to buy a new tumble dryer because i thought mine was broke but just the heat exchanger needed cleaning

stevi, January 2011
Bottom right hand corner , open the flap and behind that is the filter , there are 4 pull round lung , 3 white 1 red , go careful with the red one as that clases the micro switch that allows it to operate, pull these round and pull out filter , wash out , showers good , but wacth what goes down the drain , shake dry and reassemble ,

the fixer 567, July 2009
just pull the whole unit out and rince really well under a running tap until you can see clearly through all the cells

melanie, June 2009
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