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My centrifuge does not turn on - Dryers

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My series 90 will only Run if i holding the Starter but ton

I would start by checking the centrifugal switch on the motor.

When you push the start button, the motor starts turning, then the centrifugal switch on the motor clicks in and keeps the motor running until the timer or the door switch cuts power to it. If the centrifugal switch isn't working, the motor won't stay running.

Good luck

Oct 27, 2014 | Kenmore Dryers

1 Answer

Amana dryer ned4600yq the dryer starts when the start button is pressed but doesn't stay on once the start button is released.

From what you describe, it could be several different problems. Rarely is it the push to start switch. The most likely scenario is that the centrifugal switch on the motor is not working correctly. The other scenario would be the timer. There should be a schematic located somewhere inside the control console. Look for the wires that go to the motor's centrifugal switch and the start button. Jumper the centrifugal switch on the motor so that the dryer thinks the motor is turning all the time. Then, test it by powering it on and pushing the start button. If the motor keeps running, then it's the centrifugal switch, if it shuts off, then it's most likely the timer.

Good luck!

Oct 19, 2014 | Dryers

1 Answer

5402 error 2

Dear Sir,

In a 5402 Eppendorf Centrifuge, Error 1 states primarily for an EEPROM error. EEPROM is a tiny memory chip that stores individual details of the centrifuge, mainly the microprocessor time base (for correct time set operations), the mains voltage (115 or 230 V, to inform and set the motor current levels), and the imbalance level adjustment for the imbalance sensor. When the centrifuge powers up, these data are readen, and if all OK, the centrifuge is ready to go. If one of them corrupts, especially the 115 or 230 Volt information, we get error 1 and no start allowed.
To check and reprogram this EEPROM we have to acess the service routine. This is done by by jumping together pins 1 and 5 of X8 conector, on the base of the electronic board, located behind the power cable panel in the back of the centrifuge. There are about 20 setting or check parameters, but usually 1 or 2 of the described above need to be reprogrammed. Please e-mail me for details:

Error 2 is Motor Tach (Speed sensor) error, caused usually if the cable pops off the electronic board. But the tach sensor itself, who stays in the bottom of the motor drive, could be broken or defective.


Paulo H. F. Pimenta

Dec 13, 2013 | Eppendorf 5402 Refrigerated Centrifuge

1 Answer

S7 error message on Beckman Avanti J-E centrifuge

follow the instruction in the procedure in the last paragraph of thi link
but i think this will reset the rotor calibrtion or configuration. my system will stop the run on rotor ja-20 at 5000 rmp; and it change the rotor id set on ja-14 t 18 at 10000rpm.

Oct 30, 2012 | Beckman Coulter Avanti J-E...

1 Answer

How do you work the magnetic mixer base?

you place it where you place the centrifuge but you take the centrifuge off after that you use the magnetic capsule and put the beaker on it and then put the magnetic capsule in the beaker then lock the dome in place and turn it on

Jan 15, 2012 | Planet Toys Csi Dna Lab

1 Answer

Centrifugal Switch Closed is what my Furnace is telling me and it will not kick on i have a Coleman Evcon heating and cooling unit

Hello, I had the same problem and replaced the Centrifugal motor which still did not fix the problem. It turned out to be the squirrel cage that the Centrifugal motor turns. It was sticking on the rubber gasket between the motor and the squirrel cage/housing assembly. I loosened the set screw that holds the cage on the shaft and moved the cage up 1/8th of an inch and it solved the problem.

Jan 13, 2011 | Heating & Cooling

1 Answer

8 year old dryer. drum not spinning to tumble the clothes. checked and the belt is ok? What is the next thing to troubleshoot?


Check that the motor is turning. If not turning, is it humming? If humming, then the problem is likely start winding or centrifugal switch failure. Try lubricating centrifugal switch if stuck. If that does not work, replace motor. Be sure to disconnect dryer before working on it. Centrifugal switch assembly is located in the motor frame on the shaft.

Nov 28, 2010 | Whirlpool Dryers

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