Help please guys, I have recently changed a compressor on a "seal" refrigerated display unit, fitted new drier, cut back capilary and replaced vaporizing loop. However unit now never gets anywhere near set point and just runs excessively hot all the time. The new compreesor is an ACC (electrolux) GP12 TB (R134a), the old one was a tecumseh/ l'unite AE4448Y, I was wondering whether the new compressor is smaller capacity than the old one. - Idon't have any comparison / data on these compressors
The compressor had already been replaced once so i don't know if it had the right one anyway.
Also the new vaporizer loop is not as large as the old one - do you think this would make any diference?

Any help greatly appreciated as this unit is begining to make me look a bit of a muppet

Thanks

Andy