View RSS Feed

Today at Atelier Kaz - ex-Honda R&D, F1, Indy/CART engineer

Dishwasher

Rate this Entry




Installed the TB and checked and checked and checked like 10 times that
the valve timing is 100% correct.
After that, carefully tensioned the TB to the spec and installed the lower TB cover.


When I just started the 4Hr marathon valve clearance adjustment session,
my boss told me that something is not right with our dishwasher.

It didn’t drain the water even the program seemed to be finished.
It was also getting very hot.

I'm glad I only just started the valve clearance adjustment because
I don't want to stop once I started the process in order to keep the
environment condition such as the temperature at the same
as much as possible.


As my boss will be flying out to Japan from next week,
I decided to stop working for the day and looked into the dishwasher issue
in case I needed the extra hand.


Quick check on the pump and magically, piece of ceramic was wedged into
the impeller of the pump.

After 10 years, one of the internal cylinder shape filter lost part of its
plastic housing allowing debris to bypass the filter.

I need the replacement very soon.....

There were two additional filters at the upper stream and
the only way for such a big piece to get to the pump was to directly
jump into the centre hole of the water inlet above the filter.

Still it had to pass through the narrow channel without being trapped there so
quite surprised to see the way it wedged itself.


My boss told me that the ceramic piece was from one of the soup bowl that
cracked inside the dishwasher a few days ago......
Why you tell me now.....


Any way, after removing the piece, the pump feature was recovered but then,
noticed that the pump just kept running and never seemed to stop.

This was the same even after resetting the system and starting the new program.

The pump kept running and no fresh water entering the system.
The timer also didn’t count down.

Quick search on the web and seemed like the dishwasher kept thinking that
the water was not drained yet or it was in emergency flood mode due to the
float sensors not returning to their normal position.







So, removed the side panel and checked the float sensors.

There was no water leakage so the flood sensor (the vertical red rod)
was not triggered but there was small stone like white debris trapped between
the float arm and float housing.

This kept the microswitch in ON position resulting in not being able to detect that
the drain process has completed.


Again, I was amazed on how such small particle managed to jump into that tiny gap.

Probably, it was caused by the sudden shock when the pump function was recovered.








I didn’t really know how the dishwasher works but kept watching the
process happening at the side panel while carrying out the test washing.

Very impressed on how they control the valves and each process.


Well, it didn’t flood the floor throughout the test washing cycle and
it operated at the right temperature through the pre-wash, main wash,
rinse and dry cycles and at the end , completed the final drain so it’s fixed now.


I’m glad I can use the dishwasher again.

Back to work from tomorrow…..


Kaz



Comments