Looking to replace an American Standard compressor model#RA63G3TA-1 serial#M095W9AE 208v 3 phase. Anybody know where I can get a cross reference? Tried the local suppliers for a Copeland or Tecumseh but they couldn't cross it. Its R22 air conditioning duty about 5 tons. Model seems to indicate 63,000 btu's but I'd like to be sure before replacing.