Simpson SWT5541 User Manual page 21

6.5 AVOIDING BUILD UP OF
UNDISSOLVED
DETERGENTS
If you only wash with cold water,
undissolved detergent and body
oils will build up in the washing
machine. This build-up can cause
spotting on your clothes.
To avoid this build-up :
do not use too much fabric
softener with cold water;
select a hot water wash at least
once a month;
always dissolve the detergent in
one litre of warm water.
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