Float Switches
The float switch is wired in the circuit between the timer and the water inlet valve The purpose of the float switch
is to prevent an overflow in the event the drain system should fail or the timer should stick in the fil! position allowing too much water to enter the tub It will not prevent an overflow should the water inlet valve develop a mechanical
defect
The switch is operated by a floe1 localed m 1he 1lib _F_qHrP65) whirh ri,_S with the waler level At e predeler mined level, before an overflow can occur, the float opens the switch contacts and breaks the circuit to the water inlet valve
"fhe swftch _s e normally open m_cro sw_tch which _s held closed by the weight of the float
The ftoal switch may be checked by placing the leads from an ohmmeter across 1he switch terminals Raising and lowering the float should cause the switch contacts to close or open the circuit
NOTE:
Almost every dishwasher on the market has a timed fil/ period Some have a pressure switch for overftow proo tection, others have a float switch Normally an inlet valve should remain open for 45 to 90 seconds. There are, however, instance_ where a machtne will lilt so rapidly [because of high water pressure] that the overflow
swztch will cut off the inlet valve to prevent an overflow This will result in a pause between hfl valve cul off and the start of the wash or rinse cycle This is normal and no adjustment should be made
NORMAL CHARGE 9 QTS | OVER |
FLO
SWITCH
FIGURE66
60