Thread: Need AC Help...
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Old 05-20-2001, 10:40 PM
Wm. Lewallen
Posts: n/a
Scott,and others,
The switch on the side of the receiver/dryer is a low pressure cutoff switch. It's a safety feature that shuts the compessor off when the refrigerant gets low. It's supposed to prevent oil from being sucked out of the compressor. The early MBs with AC did not have this switch. After MB started adding this switch, I had quite a few people come to me and say their 'mechanic' told them that they needed a new compessor because they could not get the compressor to run so they could add refrigerant.
I have a short jumper wire with spade connectors on each end, that I use to bypass this switch. After about 12 ounces of refrigerant has been added to a completly dry system, the jumper wire can be removed and the switch reconnected...
Bill Lewallen; Home of The Rolex Three Day Event...
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