Looking for a Hobart-Kitchenaid Dishwasher

[combo52]

KA DW DDs

WP turned them upside-down on the KD22 models after they reviewed how many fires and other problems KA had had in the past decade or so when they bought out KA, I have done the same thing on many machines that I have worked on or rebuilt and resold.

 

The bi-metal openers for the DDs are much cheaper and probably more reliable than a solenoid, also solenoids can be NOISY Buzz y etc. The DUMB thing that KA did with their bi-metal DD openers was wiring them in series with the main motor instead of the water heater element.

 

They did this because at the time KA started using BMO for their DDs they were building KD-17 series DWs and only the TOL DW had heaters. Using the main motor as a load dose not provide a constant load, so when the main wash filter was dirty the DD BMs would not open the dispenser doors and then cleaning performance really went to hell fast.

 

WP also corrected this design problem on the KD-23 series.

 

John L.

 

[jetcone]

JOHN

Is the heating element on the whole cycle on the 17-22 series? Otherwise you couldn't open the BM's.

 

 

 

[combo52]

Heating Element Used As A Bi-Metal Load

Hi Jon, KA 17 and 18 series DWs did not have water heating elements on any but the TOL models, although they could have used the dry heater if they wanted.

 

The water heater element would not need to be on for the whole cycle for it to be used to open the DD, the timer is clever enough to just turn on the heater for 60 seconds while sending the heaters load current through the DD BM it wants to open.