Upon evaluation by the local distribution it was determined the light arm unthreaded from the chair post assembly due to the light arm adapter being too tight on the chair post assembly.The light arm is designed to rotate freely on the post assembly and due to the tight connector the light arm could not rotate properly resulting in the light arm to unthreaded from the post assembly.The chair post assembly was not manufacturing by pelton and crane and is not within manufacturers specifications.Also the pelton and crane dental light is over 20 years old and is past the expected life of the device.
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