opperating instructions/manual for wk 767 condensing dryer?

I bought a secondhand white knight condensing dryer wk 767 but had no instructions with it.
first of all it tripped the earth trip , cleaned out loads of wet fluff in the heater elements goes ok, but we could do with manual to make sure we are cleaning out all the relevent places. We empty the bottle well before its full and clean the two filters in the front but we get quite abit of leakage at the rear left hand side. would appreciate advice and contact details to get manual from manufacturers, many thanks ,