Something You May Want to Consider on Every Call
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Over time, crankcase heater and high-voltage wires can rub against the copper. These can cause all sorts of problems, including the nightmare scenario of an electric short blowing out the copper and leading to refrigerant loss.
On a normal maintenance call, we should check the wire location and look for the rubout potential. If there is rubout potential, we can insulate the copper line to prevent damage from wire rubouts. Of course, that doesn’t address wire rubouts that have already caused damage, but line insulation is a great preventative measure.