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Forum: Analog Circuits Микроконтролер


von Васил В. (bab)


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Hello,
I own a Murphy Richards bread bakery. The motor and heater control board 
is damaged. I looked for an option to get a new one and replace the old 
one, but it turned out to be problematic. Hello,
I own a Murphy Richards bread bakery. The motor and heater control board 
is damaged. I looked for an option to get a new one and replace the old 
one, but it turned out to be problematic. If anyone can guide me how to 
procure is the easiest way to solve the problem. The other option is to 
repair the same board. History: First the motor capacitor was damaged, 
which I replaced with the same data. The machine worked perfectly for 
about a month. Then suddenly there was a pat-pat with light smoke and an 
alarm sounded, and the screen read EE1, at which I immediately turned 
off the machine. I inspected the board and it turned out that the relay 
for the heater remained constantly on and the heater heats up to a very 
high temperature, the contacts are obviously stuck, and I replaced it. 
When the screen starts, it displays EE1 again and beeps. Nevertheless, I 
let it work to check the operation of the heater. Now the heater does 
not turn on. Probably the problem is in the relay control. The data is 
in the attached photos.
I hope someone helps.

von Васил В. (bab)


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Hello,
I own a Murphy Richards bread bakery. The motor and heater control board 
is damaged. I looked for an option to get a new one and replace the old 
one, but it turned out to be problematic. If anyone can guide me how to 
procure is the easiest way to solve the problem. The other option is to 
repair the same board. History: First the motor capacitor was damaged, 
which I replaced with the same data. The machine worked perfectly for 
about a month. Then suddenly there was a squeak of light smoke and a 
beep sounded, and EE1 appeared on the screen, and I immediately turned 
off the machine. I inspected the board and it turned out that the relay 
for the heater remained constantly on and the heater heats up to a very 
high temperature, the contacts are obviously stuck, and I replaced it. 
When the screen starts, it displays EE1 again and beeps. Nevertheless, I 
let it work to check the operation of the heater. Now the heater does 
not turn on. Probably the problem is in the relay control. The data is 
in the attached photos.
I hope someone helps.

: Moved by Moderator
von Martin (Guest)


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Where are the photos?

von Other Post (Guest)


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Double layer

von Васил В. (bab)


Attached files:
  • preview image for 1.jpg
    1.jpg
    398 KB, 9 downloads
  • preview image for 2.jpg
    2.jpg
    174 KB, 4 downloads
  • preview image for 3.jpg
    3.jpg
    265 KB, 3 downloads
  • preview image for 4.jpg
    4.jpg
    360 KB, 3 downloads
  • preview image for 5.jpg
    5.jpg
    331 KB, 3 downloads
  • preview image for 6.jpg
    6.jpg
    289 KB, 2 downloads
  • preview image for 7.jpg
    7.jpg
    278 KB, 6 downloads
  • preview image for 8.jpg
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Сега ги качвам.

von Васил В. (bab)


Attached files:
  • preview image for 1.jpg
    1.jpg
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  • preview image for 2.jpg
    2.jpg
    174 KB, 9 downloads
  • preview image for 3.jpg
    3.jpg
    265 KB, 8 downloads
  • preview image for 4.jpg
    4.jpg
    360 KB, 13 downloads
  • preview image for 5.jpg
    5.jpg
    331 KB, 8 downloads
  • preview image for 6.jpg
    6.jpg
    289 KB, 5 downloads
  • preview image for 7.jpg
    7.jpg
    278 KB, 7 downloads
  • preview image for 8.jpg
    8.jpg
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  • preview image for 9.jpg
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Качвам ги.

von Васил В. (bab)


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..

von atzem (Guest)


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A schemtic of the electronic side would be helping us (me and all 
others)..

Do you have that ? Murphy Richards bread bakery: which model ?

What says Google or others for a schematic search ?

von Васил В. (bab)


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I don't have a schematic, and I can't find it on Google.

von Васил В. (bab)


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And the model is in the picture.

von abc (Guest)


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Check the Termostat (or thermosensor) ..and wires and connectors....

And check if there is a overtemperature -switch or -fuse!
I guess your overtemperature-fuse has tripped.

von Васил (Guest)


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Timeline - I turned on the machine and loaded the products. in the first 
phase of stirring, about five minutes after the turn-on, a fault alarm 
went off and the motor also stopped rotating. I disconnected from the 
network immediately. I checked the board for burns, but they were not 
visible. I carefully turned on the machine and at the alarm signal I 
started the program. The engine was running and the heater immediately 
started heating up strongly, which is not normal. It turned out that the 
heater relay is stuck. After replacing the relay, the heater does not 
switch on.
Хронология- включих машината и заредих с продуктите. в първата фаза на 
разбъркване, на около петата минута от включването пат-пат и се включи 
аларма за повреда, като моторът също спря да върти. Изключих от мрежата 
веднага. Проверих платката за нагорели места, но  не се виждаха такива. 
Внимателно включих машината и при сигнал на алармата стартирах 
програмата. Моторът работи, а нагревателя започна веднага да загрява 
силно, което не е нормално. Оказа се, че релето на нагревателя е 
залепнало. След смяната на релето, нагревателя не се включва.

von Lorenzo (Guest)


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Greetings to Bulgaria!

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