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ApplianceGuru.com: The Samurai Appliance Repair Forums > Do-It-Yourself Appliance Repair Help > The Kitchen Appliance Repair Forum > Miele Classic G885 SCi Dishwasher |
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ApplianceGuru.com: The Samurai Appliance Repair Forums > Do-It-Yourself Appliance Repair Help > The Kitchen Appliance Repair Forum > Miele Classic G885 SCi Dishwasher |
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pcworth Chief Apprentice Appliantologist
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Dear Sensei, After accessing the service manual on my Miele dishwasher family from this website a few weeks ago, I have had great success in sorting out a problem, but now, I sense that another might be about to emerge, and I would appreciate some advice. Just after the dishwasher commences a cycle (when I think the initial water inlet is occurring), a loud and painful-sounding "groaning" noise can be heard, for a period of about 15-30 seconds. The noise then stops, but it may occur later, again at a time in the cycle when new water is perhaps being loaded. The machine is otherwise working perfectly.....at the moment. I am assuming that this noise might relate to a water pump, and the subject of bearings comes to mind. However, I am far from sure that this is the correct conclusion. Can anyone offer an explanation, and any advice about what I can do about it myself? I would be most grateful. Sincerely, Peter |
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Chat_in_RI Sublime Master of Appliantology 
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pcworth wrote: Just after the dishwasher commences a cycle (when I think the initial water inlet is occurring), a loud and painful-sounding "groaning" noise can be heard, for a period of about 15-30 seconds. The noise then stops, but it may occur later, again at a time in the cycle when new water is perhaps being loaded. The machine is otherwise working perfectly.....at the moment. "Sounds" like a fill valve issue... Does the noise change or stop if you open the hot water tap at the sink while the noise is in progress? |
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pcworth Chief Apprentice Appliantologist
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Thanks very much for your suggestion. I don't know the answer, but will check the response to tap opening today. I should have also mentioned that this noise does not occur on every cycle, but it seems to be becoming more frequent. |
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pcworth Chief Apprentice Appliantologist
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I tried turning on the hot (and cold) water when the dishwasher made its usual noise this evening, but there was no change in the audible sound. Does that give you any further clues? |
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Samurai Appliance Repair Man Fermented Grand Master of Appliantology 
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Could you to make a recording of the noise? Might help us visualize possibilities of its origin. Also, remove the kickplate and see if you can isolate the source to a specific part. |
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pcworth Chief Apprentice Appliantologist
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Thanks, that's a very interesting idea! I'm not yet quite sure how I might record the sound and upload it however...I'll give it some thought, but further suggestions would be most welcome. Meantime, I will certainly see if I can narrow down the origin of the sound by removing the kick plate. I have now established that the sound definitely occurs twice in each cycle, and it doesn't happen exactly at the time of water intake after all, but just a little time after that. |
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RegUS_PatOff Fellow, Academy of Sublime Masters of Appliantology 
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or video & audio with a camcorder, if you could then capture it into your computer, and then upload it to a place such as youtube |
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pcworth Chief Apprentice Appliantologist
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Yes of course...YouTube! I will work on it. Thanks for your advice. |
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Chat_in_RI Sublime Master of Appliantology
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Samurai Appliance Repair Man wrote: Could you to make a recording of the noise? Might help us visualize possibilities of its origin. I like it  |
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pcworth Chief Apprentice Appliantologist
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I took the kick plate off last night for the performance, but wasn't able to deduce much! For what it is worth, the noise sounded to be coming more from the right hand side at the bottom, looking into the dishwasher. Incidentally, I have discovered that there is a sound recording program already on most Windows computers(you learn something every day), so I just have to get my laptop and a microphone to the dishwasher at the right time, and bob's your uncle. I haven't worked out the next step after that yet! |
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pcworth Chief Apprentice Appliantologist
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Well guys, this is certainly turning out to be a voyage of discovery. Using my son's laptop, I managed to successfully record the offending dishwasher noise with the Windows Sound Recorder. Then I emailed it to myself, so it is now available on this computer. It played without any problem on my Windows Media Player. Unfortunately, the Sound Recorder only allows a 60 second file, but this time was sufficient to capture almost all of the sequence...at least I hope that it will be enough for some Sherlock out there to make a diagnosis! Next problem. The Sound Recorder produces a ".wav" file (yes, well, I have only just found out what that is myself!) and as it happens, that sort of file is not accepted by YouTube. I tried attaching the file in a Word document to this post, but it exceeded the size limitation. So, I now just have to work out how to get anyone else to hear it! Any further suggestions? |
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pcworth Chief Apprentice Appliantologist
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I'm still not sure it will work, but try this. I found a free site where you can upload files (http://uploadingit.com) and put the dishwasher noises on there. I haven't quite worked out their jargon, but hopefully if you click on the link below, you might be able to listen to the recording! Good luck. Please let me know if you have any success. http://uploadingit.com/files/1171356_2c0vs/Dishwasher.wav |
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RegUS_PatOff Fellow, Academy of Sublime Masters of Appliantology
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pcworth wrote: http://uploadingit.com/files/1171356_2c0vs/Dishwasher.wav Attachment: Dishwasher.gif (Downloaded 20 times) |
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pcworth Chief Apprentice Appliantologist
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OK, I will have to investigate how to "give you permission"! At least we know it's possible. Thanks for your trouble. By the way, I forgot to mention that the recording starts immediately after the cycle begins, so there are about 30 seconds of water inflow before the mystery noise starts. It cuts off after 60 seconds, but the noise only continues for about 10 seconds more, and the quality of the missing bit is about the same as those you can hear. |
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pcworth Chief Apprentice Appliantologist
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Give this a shot. It called it a "sharing link", so I am hoping that you might get access. The site said the previous file was set at "private", but I couldn't find any other info about making it "unprivate". http://uploadingit.com/browse/pcworth/227659 |
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RegUS_PatOff Fellow, Academy of Sublime Masters of Appliantology
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The folder you requested is not available. Either you do not have the permission to view it (try logging in) or it may have been deleted by the owner. |
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pcworth Chief Apprentice Appliantologist
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Thanks to RegUS_PatOff (see below), the file should now be accessible through the previous URL. Last edited on Mon Jun 29th, 2009 10:04 pm by pcworth |
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pcworth Chief Apprentice Appliantologist
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Also, it occurred to me, if this doesn't work and you could post an email address, I could mail the sound file to you directly. It should play on any Windows computer. |
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RegUS_PatOff Fellow, Academy of Sublime Masters of Appliantology
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that worked .. I don't know what the sound is.. but I changed the file from private to public if they know the URL (you could now edit your message and remove username / password) Last edited on Mon Jun 29th, 2009 09:45 pm by RegUS_PatOff |
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pcworth Chief Apprentice Appliantologist
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Nice work! How did you change the designation from "private"? I couldn't see anywhere to do that. Don't worry, I have now found it! I missed the "Edit" instruction in all the excitement! Out of interest, was the sound quality of the recording satisfactory? Thanks again for your interest. Last edited on Mon Jun 29th, 2009 10:08 pm by pcworth |
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RegUS_PatOff Fellow, Academy of Sublime Masters of Appliantology
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somewhere upper left side of screen... in blue (edit) quality is OK |
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pcworth Chief Apprentice Appliantologist
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Thanks again! |
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Chat_in_RI Sublime Master of Appliantology
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Definitely NOT the water inlet valve... "Sounds like" a pump impeller, plastic grinding? |
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Budget Appliance Repair Fellow, Academy of Sublime Masters of Appliantology
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Chat_in_RI wrote: Definitely NOT the water inlet valve... "Sounds like" a pump impeller, plastic grinding? That's my exact same thought. Sure sounds like a piece of glass or other foreign object grinding down the wash motor impeller. |
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pcworth Chief Apprentice Appliantologist
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Thanks very much for your assessments. I will follow that idea up. Presumably, the fact that this noise doesn't predictably occur on every cycle could be consistent with a slightly loose object that is not always in the same position? |
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Budget Appliance Repair Fellow, Academy of Sublime Masters of Appliantology
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pcworth wrote: Thanks very much for your assessments. I will follow that idea up. Presumably, the fact that this noise doesn't predictably occur on every cycle could be consistent with a slightly loose object that is not always in the same position? That would make sense. |
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pcworth Chief Apprentice Appliantologist
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Thanks Willie, I will let you know how I get on. Peter |
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pcworth Chief Apprentice Appliantologist
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Congratulations to you two Sherlocks. The mystery has been resolved! I took out the dishwasher's circulation pump and remove the impellor, which was in two separate halves, instead of being a single unit! I have attached some pictures, which show the situation. (Sorry, I couldn't seem to attach more than one image). My impression is that the plastic overlying the (now visible) pegs locking the two halves of the impellor together has eroded away, allowing them to separate. The actual origin of the noise is still a bit of a mystery, since there is no sign within the circulation pump housing that any friction to the housing has occurred. It seems unlikely that the two halves have been spinning separately, since perhaps you would expect the "pegs" to have sheared off, if the outside component had been spinning and then "catching"..... Perhaps the sound was the two pieces "chattering", without actually separating. Who knows! New impellor coming! Thanks again for your interest and expert assistance. Regards, Peter Attachment: Impellor2.JPG (Downloaded 11 times) |
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