Thread Number: 80968
/ Tag: Vintage Automatic Washers
Australian Kitchenaid KDS-17 Timer Problem |
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Post# 1049669   11/2/2019 at 04:00 (1,636 days old) by mit634 (Sydney)   |   | |
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Hi All,
My Australian Kitchenaid KDS-17 has developed a fault where the dryer fan heater runs through the entire cycle. I have removed the timer and confirmed the dryer contact has permanent continuity. The timer does not seem designed to be taken apart as it is held together with rivets. I'm happy to try drilling out the rivets but thought I would ask here first if anyone has experience with such a fault and/or disassembling one of these timers. The timer is a Holzer (made in Germany, as was the dishwasher). Pictures attached. Thanks all. Regards, Tim |
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Post# 1128964 , Reply# 3   9/18/2021 at 01:48 (950 days old) by mit634 (Sydney)   |   | |
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Hi everyone,
Getting back to this thread after a VERY long time... The issue was that the timer of my West German built Australian sold KDS-17 dishwasher had developed a fault where the dryer fan heater ran throughout the cycle and not just in the dry phase. As a temporary fix, I simply disconnected the fan heater unit. However, I was determined to try and fix it properly and the time came when the dishwasher became our daily use machine. After unsoldering and removing the two motors from the timer, I drilled out the two rivets holding the upper and lower halves and the middle circuit board together. To my horror, as I separated the pieces, parts popped out everywhere. Unfortunately most of the parts inside this timer, many under spring pressure, are held in place by the case itself. Not to be deterred, I then drilled out the twelve rivets holding the bottom circuit board to the lower half of the plastic housing to get to the electrical contacts of the fan heater. As I separated these, even more parts popped out ! All up I counted I had over 60 loose parts on the bench. The easy part of the exercise was to find the contacts for the fan heater, which as I suspected had become welded together, and separate and clean them. The hard part was figuring out where each part went back and how to reassemble it while holding everything in place. Firstly I drilled and tapped the plastic case so that I could reassemble it with machine screws to replace the rivets. Then I built an assembly jig using timber and Meccano strips to aid in holding parts in place against spring pressure, while I located the mating part and tightened the screws almost down. Then I slid out the Meccano strips and tightened the screws the rest of the way down. I used the assembly jig at two stages of assembly. It took a couple of attempts to get it right but it worked better than I thought it would. I reinstalled the motors and put the timer back in the dishwasher and it has been working beautifully ever since (about two months now in daily use). I'm really glad I went to the effort to try and fix it.
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Post# 1128965 , Reply# 4   9/18/2021 at 01:49 (950 days old) by mit634 (Sydney)   |   | |
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Loose contacts and springs
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Post# 1128966 , Reply# 5   9/18/2021 at 01:50 (950 days old) by mit634 (Sydney)   |   | |
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Lots of loose parts
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Post# 1128967 , Reply# 6   9/18/2021 at 01:51 (950 days old) by mit634 (Sydney)   |   | |
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Reassembly part 1
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Post# 1128968 , Reply# 7   9/18/2021 at 01:52 (950 days old) by mit634 (Sydney)   |   | |
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Reassembly part 1 continued - circuit board screwed almost down - about to slide out the Meccano strips
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Post# 1128970 , Reply# 8   9/18/2021 at 01:54 (950 days old) by mit634 (Sydney)   |   | |
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Reassembly part 2 - upper and lower halves
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Post# 1128971 , Reply# 9   9/18/2021 at 01:55 (950 days old) by mit634 (Sydney)   |   | |
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The machine (which my partner has beautifully repainted)
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Post# 1128977 , Reply# 10   9/18/2021 at 04:31 (950 days old) by Launderess (Quiet Please, There´s a Lady on Stage)   |   | |
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Post# 1128980 , Reply# 11   9/18/2021 at 06:18 (950 days old) by combo52 (50 Year Repair Tech Beltsville,Md)   |   | |
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Post# 1128991 , Reply# 12   9/18/2021 at 09:42 (950 days old) by qsd-dan (West)   |   | |
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Post# 1128992 , Reply# 13   9/18/2021 at 09:46 (950 days old) by DADoES (TX, U.S. of A.)   |   | |
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Post# 1129074 , Reply# 14   9/19/2021 at 04:31 (949 days old) by aussie-plugs (Melbourne, Australia)   |   | |
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You have the patience of Job to do that ... so glad to see it didn't end in tears |
Post# 1129223 , Reply# 15   9/21/2021 at 15:48 (947 days old) by mit634 (Sydney)   |   | |
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