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Ev air conditioning systems have a special type of non conductive oil in them. it is very important to use the right stuff or you could get a shock !!
 

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The oil type is nd-oil11 or an equivalent. the motor act directly on the pistons inside the compressor how else would it turn. There is no clutch just a squash plate that is controlled by the refrigerant pressure. If the motor had a short circuit fault it could make the pipe work live. chances are the system would shut down before that happens. But you never know.
 
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