Question about matag Maytag QuietSeries 300 Dishwasher MDB7600AWW * Metal Plastic

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Float switch connections

I am replacing a float switch and wiring damaged by our angry Pekingese dog. (Really-- it's a long story) There are two wires connected to the switch terminals. One wire comes from the control panel. The other goes from the switch to the water valve. One of the switch terminals is marked "COM" The other terminal is marked "NC". Which wire is connected to which terminal?_

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Michael Smith... Hello,

Looks like we are in luck...

My FAV website form "MANUALS"...

Happens to have your SERVICE & REPAIR manual:
Maytag JDB4000AW Service Manual

The actual description on page 29 is not all that ILLUMINATING...
... and WORSE I WAS HOPING TO SEE A circuit DRAWING to confirm what I already knew..

"Com" takes the POWERED SIDE... (hot when running)
"NC" (normally closed) goes to the WATER VALVE.

During the sequence of washing...
the controller applies power to the "COM"...

when the FLOAT SWITCH... is NOT floating power
continues to be "ON" to the WATER-VALVE...

When the water get to the operational (float)
level the "NC" (normally closed).. OPENS and shuts
OFF the WATER VALVE.

I ONLY looked halfway through the "service" manual...
before I came to the conclusion there were NO SUCH
circuit or schematic drawings... (verified on 2nd pass).

Even after to careers in electronics... I hate working on
ELECTRIC stuff... My personal pleasure would be to invite you to look at the No Contact Volt Tests... (NCVT)
Amazon com no contact volt test

For between $10 & $20 you can be the proud owner of a
NCVT... Mine is a KLEIN... (long ago.. & far away).

Turns red & chirps... when it gets near power
(so I won't have to (turn RED or chirp)).

Klein Tools NCVT 1 Non Contact Voltage Tester Electrical Tools Amazon com

Still got it... Still love it...!!

Hope this helps...

and I am glad to hear it is a long story rather than a
tragic one...!!

Give your darling Pekingese message for me...
"Wag more... chew less"

Carnac the Magnificent

Posted on Aug 01, 2017

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Posted on Jan 02, 2017

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