Vibration eliminators should be installed _____ to the compressor crankshaft centerline.

Vibration eliminators are specifically designed to minimize vibrations transmitted from the compressor through the piping. When installed parallel to the compressor crankshaft centerline, they effectively accommodate the natural movement and vibrations produced during the compressor's operation. This alignment allows the vibration eliminator to absorb and dissipate the vibrations, thereby preventing them from affecting other components in the refrigeration system.

When positioned parallel, the piping connected to the compressor can flex appropriately, which helps in reducing stress on joints and maintaining system integrity. This is particularly crucial since excessive vibration can lead to premature wear and failure of components within the refrigeration system.

In contrast, orientations like perpendicular or at a 90° angle inhibit the natural flexing capacity and may disrupt the vibration absorption process, leading to increased wear on the system instead of alleviating it. Thus, the choice of installing vibration eliminators parallel to the compressor crankshaft centerline ensures optimal performance and longevity of the refrigeration system.