universalblue 1750 User Manual page 49

 Carefully wash the air filters by immersing them in hot water
(about 40 °C or 104 °F) with neutral detergent.
 Rinse the filter detergent and let it dry completely in a shaded
area.
 Put the air filter back in its original place.
AIR CONDITIONING CLEANING
Clean the surface of the unit with a damp cloth. Then dry with a cloth
or similar.
DO NOT USE CHEMICAL SOLVENTS (SUCH AS BENZENE OR
ALCOHOL) TO CLEAN THE SURFACE OF THE UNIT; DOING SO
WILL SCRATCH, DAMAGE, AND EVEN DEFORM THE ENTIRE
CASE.
BEFORE YOU PUT IT INTO OPERATION
 Check if the air inlets and outlets of the unit are blocked.
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