Thu Apr 26 2018

Rotor does not engage

I have a unit that will not engage the rotor motor. I can manually start the machine and it will continue to work for a couple of cycles. Could this possibly be the relay? The control board was replaced recently as the old one burned out. Thanks in advance for any suggestions / help.
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Thu Apr 26 2018Reply from ATWright
Jm123

Ozark Biomedical may be able to assist with this!


Alexandra Wright
MedWrench - Sales & Marketing Coordinator
email me: awright@medwrench.com
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Thu Apr 26 2018Reply from C. Mash
Jm123

Several factors can be in play preventing your unit from starting and the only way to know which is to rule them out 1 by 1. I will gladly assist you in troubleshooting if you give me a call. Our number is 800-457-7576 and my name is Chris. I look forward to your call.


Ozark Biomedical
Senior Technical Specialist
800-457-7576
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Sun Apr 29 2018Reply from WaveGuide Medical Engineering
avatar placemark

Is it brushed or brushless.  I’d have to say it’s more likely brushless.  How have you split the circuit to know which side is biased and which is not?  It sounds like you hand spin it and it works for a bit.  Do you know how to hand rewind a motor and test a commutator  and sand down the comm?


WaveGuide Imaging Solutions
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Mon Apr 30 2018Reply from ATWright
Jm123

"The S2210 is brushless. If you can provide a serial number we can confirm that it is an S2210 and not an S2200.

 Since the motor will run if you spin it first and works for a couple cycles we know that the drive elements are not fried and the windings are not open. That is assuming that it is not running really rough when it spins. That would narrow it down to the motor not getting enough power to start. A brushless motor can have higher starting current because of the wider angle between phases.

 

Because of the potential for higher starting currents (brushless motor LRA is typically around 30 - 35 amps) things like a heavily loaded circuit, being plugged into a power strip, or a loose fitting outlet can have affect a brushless motor more than a brush type.

 Power drops can also happen across connections. I would check for burned contacts in the drive / brake relay. I would also check for loose connections between the power board and relay socket, and between the relay socket and motor."

From:
Charles Lovelady


Alexandra Wright
MedWrench - Sales & Marketing Coordinator
email me: awright@medwrench.com
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Tue May 01 2018Reply from Jm123
avatar placemark

Well, I found that the motor pin 1 VCC( yellow) has become loose from the clip. It was slightly making contact. Attempted to recrimp the connection. It works for now but will need a new motor clip. It appears that a new motor may be needed as i could not locate a part # for the clip / connection.

 

Thanks.


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Tue May 01 2018Reply from CharlesL
avatar placemark

I am not sure what you mean by came loose. Is the wire still connected to the pin? There is a small locking tab that should keep the pin from backing out of the plastic housing.

The pins in the connector are AMP part number 770666-1. Unfortunately AMP has discontinued that part and the replacement doesn't fit the plastic housing. So to change the pin you would need to change all five and the housing. AMP's replacement part numbers are 1445336-1 for the pins and 1375820-5 for the 5 postion plastic housing.


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GFMD - Silencer S2210
by GFMD