190INSTRUMENTSANDCONTROLS
Whenthetankisfull,reinstallthellhoseontheelbowtting.Donottightenmore
thanngertight.Makesurethatthevalvehandleisfullyopen(1)toallowventing.If
thevalveisleftinanyoftheclosedpositions(2),thepumpedoutwatermaygenerate
anunder-pressureinthetank,interferingwiththepumpoperation.
Note:Thevalvepositionsareshownasviewedfrominsidethecab.
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