The sprayer and strainer maintenance
During the wash and rinse cycles the dishwasher sprayer sprays water on the dishes with considerable
force. The water then drips to the tub bottom, to be filtered by the strainer and circulated by the pump
back through the sprayer.
Dishes do not wash well when the holes in the sprayer or strainer are clogged. One way to check for
clogging is to listen to the sprayer during the washing cycle. If you cannot hear it turn at about 40
swishes per minute, the sprayer has slowed or halted. This occurs when spray holes, which point
horizontally to make the sprayer turn, clog with food particles. Remove the sprayer and strainer from
the dishwasher to clean them. Flush both under running faucet. Scrub the strainer with a stiff brush to
remove accumulated food particles and debris.
The float switch
Most dishwashers are protected from water overfill by float switch. The switch has a buoyant upper part
(the float), located in the tub, which controls a switch underneath the tub. When the float is down, the
switch is closed and water can enter; when the float is up, the switch opens and the water is shut off at
the inlet valve.
The pressure switch
The pressure switch responds to the pressure of the tub water as it rises, and turns off the water at the inlet valve after the water in the tub reaches a set level. When the switch malfunctions, no water at all can enter the tub. Note: pressure switches are found in only a few machines. Most units use the timer to turn off the water flow.
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