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<blockquote data-quote="ALBundy" data-source="post: 52723" data-attributes="member: 15"><p>The E46 and E39 have a more advanced system. Well, if you are familiar with the term variable speed compressor. What traditional compressor does is, when the interior temperature reaches, say the temperature set by you, the magnetic clutch will disengage and hence the compressor won't be running, and when the temperature increases, the clutch would be re-engaged, in layman's term cut in - cut out. Plenty of wear and tear!! That's why I always set my temperature pretty cold so the compressor doesnt cut in/out often.</p><p></p><p>As mentioned earlier, the system in the E39/E46 is more advanced. The compressor actually runs all the time but the rotation speed varies depending on the load, once the interior is cooled, the compressor will run at low speed and vice versa. This actually prolongs their lifespan.</p><p></p><p>Hope this helps!</p><p></p><p>Al</p></blockquote><p></p>
[QUOTE="ALBundy, post: 52723, member: 15"] The E46 and E39 have a more advanced system. Well, if you are familiar with the term variable speed compressor. What traditional compressor does is, when the interior temperature reaches, say the temperature set by you, the magnetic clutch will disengage and hence the compressor won't be running, and when the temperature increases, the clutch would be re-engaged, in layman's term cut in - cut out. Plenty of wear and tear!! That's why I always set my temperature pretty cold so the compressor doesnt cut in/out often. As mentioned earlier, the system in the E39/E46 is more advanced. The compressor actually runs all the time but the rotation speed varies depending on the load, once the interior is cooled, the compressor will run at low speed and vice versa. This actually prolongs their lifespan. Hope this helps! Al [/QUOTE]
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