CLEANING Pressalit recommends that chalky deposits be removed from wall tracks and other aluminum parts using a solution of three parts of 30% acetic acid to seven parts tap water. When the aluminum parts have been washed down with this solution, the parts should be wiped over with a damp cloth wrung out in clear water. WARRANTY Pressalit makes a commitment to remedy material and manufacturing defects for a period of five years from the invoicing date.