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Krups produce a premium product and it would be surprising if they didn't also have a repair or exchange service. Sometimes such a service is a reasonable cost and it is advisable to at least make the enquiry before proceeding further with your home repair.
Early food mixers used a number of series resistors for speed control and the circuit was fairly straightforward to check with a multimeter and any capacitors found are likely to be radio interference suppressors.
Later mixers use an electronic speed control and the best mixers use feedback to maintain the speed and torque when mixing or beating viscous material that would otherwise slow the speed significantly.
Checking/troubleshooting the electronics are beyond the scope of home repair, however, the circuit can be checked to the speed control fairly simply and then from the speed control to the motor and the motor itself. If everything else checks out then it would be reasonable to assume the electronic speed control has failed.
Early electronic speed control used either a thyristor as the control device or a diac/triac pair mounted on a small circuit board. Later types probably use a speed control module similar in principle to those found in power drills...
make sure jar is in correct position and all the saftey items ok and fitted well.then no power?
ok maybe 1 bad wire (incoming power)
2 plug (check internal fuse)
3.power switch
4.trip switch (please check bottom side)
5.thermo fuse or by metel for protection.is bad.
6.all safty switches.
7 brush and brush holders.
8.coil.
The speed selector circuit has been compromised but either an electrical short, or disruption from particles that entered the switching mechanism and covered contacts. Needs technical attention.
Possible that the cord is open, check continuity of the plug wires to confirm.
If not the switch is defective, check the switch after removing power.
Finally the motor can be faulty.
Check the continuity using a multimeter.
Assuming the mixer is overheating (and not the transformer), first check (with a multimeter) the voltage being supplied to the mixer from the transformer and ensure it is near 120V. Next, do you know the powerline frequency in the country you're in? The mixer (assuming it came from US) was designed for 60Hz US power. Many other countries use 50Hz, which could cause overheating if the mixer is used heavily. When 60Hz equipment is used on 50Hz power, it normally must be "derated" meaning it must be "underworked" as compared to its original capabilities.
Be sure to test the voltage going to the mixer, from the transformer, not only when the mixer is off, but be certain to test it in use, mixing whatever it is you are mixing -bottom line is to be sure the transformer continues to output 120V under load, with the mixer loading the transformer.
If all is OK with the power going to the mixer, then the problem is either in the mixer or the problem is how it is being used. What are you mixing with it - are you overworking the mixer? Does the mixer always overheat or only with particularly demanding jobs (cut down batch size in this case). What gear are you mixing in? If overheating in second gear, try mixing the same batch in first gear. If you have or can find a user's manual, it probably gives reccommended batch sizes for various typical products you might mix, be sure to follow these recommendations and "derate" for 50Hz if necessary.
It's possible the motor is weak from a long life spent working hard. A weak motor will draw excessive current and overheat. Where is the mixer hottest? The front at the gearbox/transmission or the rear where the motor is located? Maybe the transmission is lacking lubracation and needs a grease change. There a many possibilities for your mixer to overheat, and I hope this helps.
Your mixer may still be good, let it cool down and then check it out, If it runs OK then there is no problem. The motor in your mixer probably over heated from trying to mix bread dough which will make any mixer work hard. These mixers will get warm when over worked but unless heavy smoke was coming out and you were getting a burning enamel smell it is probably OK. Let it cool and try it but I suggest you not use it for bread any more.
Hi. Goto www.mendingshed.com and download the free Kitchenaid Service Manual.
You may have overloaded the mixer with bread or cookie dough, causing internal damage to the gears.
If you plan to do the repair yourself, you might also consider removing the old grease and oil. Remove, clean and regrease the planetary gear assembly as well. This will add years of life to your mixer.
Regrease with Chevron FM ALC EP-2 product.
If this solution has assisted you, please rate it. Good luck! ricardok45
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