Yahawahay

I have this 4month old install of a copland high temp fractional copland compressor in which I installed. the old compressor locked up on mechanical failure. I believe I correctly installed this one, yet, it failed with S to G short. This is my SOP for the last. 1. Check for Correct voltege @ Control box. 2. Check Ohms across C S R & G (no shorts or open windings) 3. apply Hard Start Cap. 4. Finally Bump compressor..which worked for second.. with loud hard knock noise then lock up.. tripping breaker. I Replaced the compressor with equal tonnage and manufacturer. after blowing out line with Nitogen and installing suc and liq. line dryers. Now. I have a compressor that is short S to G after a misily 4 months. My question is.... is there anything I could have done diff. to prevent this early electrical Issue?[:-banghea