Does anyone know at what refrigerant temperature the red temperature switch on the dryer closes to activate the auxiliary fan?

I have heard that it is at 52 degrees C. The pressure at 52 degrees C for R-12 is about 180 to 200 psi.

Also, what is the temperature difference between the old green switch and the new red switch (i know red is lower temperature, but I do not know what the specific difference is).

Thanks

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Jovan

'84 (11/83) 190D 2.2 5-Speed; Silver/Blue; Motor No. 00354, 402k mi (340+kmi mine)

'89 Porsche 911 Turbo Coupe; Black/Black; 53kmi
'05 BMW 530i 6-Speed; 302kmi
'19 Range Rover; 30kmi