walk in freezer, 404a, one of the outside fan motor was seized, i replaced it.fan motor started working but comp.wasnt starting, found start cap was out. replaced it, now it would start and pull 98 amps and shuts down also trips the oil pressure switch. i thought comp. was locked. told cutomer he needs new comp. cutomer called another tech and he got the semi hermetic comp. going. what i heard from customer is he shut the valve off and then let the refrigerant let in slowly. please let me know what the other tech. did in detail. i am new to refrigeration.