Mitsubishi FX10 dirty side low + more
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  1. #1
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    Default Mitsubishi FX10 dirty side low + more

    I have a Mits FX10 and there is a few issues going on but I am thinking they are due to either the resin pump going out or the circulation pump(?) going out. It keeps giving me either dirty side low or clean side low and neither at the time are low. But at times the clean side is not getting enough water and gets low but off and on and erratically. No specific time or situation really except its primarily during roughing. I used to always get a U827 Pump/Chiller alarm also the generic sequence error.

    My question is do the pumps have a water low cut off alarm/switch in them? Say one pump isn't getting enough flow to or from it there for triggering the water low alarm? Or could it be the sensors in the tanks are bad. I cleaned them and they look ok but IDK for sure. My other question is which pump feeds into the chiller? And could there be clogged chiller issues causing the prob? If so how do you clean it out? It's just a radiator type box above the dirty tank with no alarm panel or anything like my fx20 has. I cleaned the fins of a lot of dust n oil but not sure what to do internally if there is anything I can do.

    Any feed back is welcome,
    Thanks,
    Tvalen1432

  2. #2
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    I get clean side low messages usually when my edm filters going full. There is a pressure gauge that shows if there is a problem there but mine seems to show false data. It can be something else for sure, but worth a try.

    Gl troubleshooting and have a nice day!

    Mate
    Last edited by msrbl; 10-13-2017 at 01:28 AM. Reason: typo

  3. #3
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    What msrbl said about dirty filters. Even with clean ones, if you don't have your flush nozzles sealed to the workpiece, you can draw more water than the filters can flow. If your volumetric flow meters show more than 4-6 liters per minute, it won't keep up. The float switches do go bad, I've replace several in different areas of the machine. They can get dirty, and not read. They can get dirty and not move at all.They can fail to float any more. They can electrically fail internally.

    On my FX10K the chiller (not heat exchanger), is fed by the filter pump, and the tank circulation needs to be on. The chiller alarm is if it is not on, in an error mode, or the temperature delta T is more than 5 degrees. None of that applies to a heat exchanger. Hope that helps.

  4. #4
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    Update:
    There is a control valve down by the lower Grundfos pump (filter pump I believe) that is connected to the hose that leads to the large filters. Change that valve. I found it to be this after doing everything else possible like: cleaning all valves and solenoids, verify filters are good, clean holding tank, supply pump, filter pump (and where they sit in tank), hoses to and from pumps, etc.
    As for water flow issues when threading, or air bubbles in flow meters I would definitely clean A & B valves and more than likely replace solenoid E.
    Hope this helps keep some ones sanity.

    Tvalen1432

  5. #5
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    Clarification on part of my post: I kept getting clean side low alarm and noticed the clean side tank kept running low. I tryed everything under the rainbow. Then I asked a tech that told me... If the all filters are good, and there are no obstructions in hoses etc. and you have cleaned all the valves and solenoids, then check/replace the check valve that's attached to the hose leading to the large filters by the lower grundos filter. I will attach a picture.
    The other thing is if you are experiencing water constant flow from upper head after threading or when ever you should check Solenoid E, Valve A & B for cleaning as well as any wear and if functioning properly. Hope this helps.
    Attached Thumbnails Attached Thumbnails check-valve-clean-side-low.jpg   check-valve-clean-side-low.jpg  


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