Abstract　　 
XMM-Newton and Chandra observations have revealed that some physical mechanisms act as an inhibitor to prevent cool gas to infall onto central cD galaxies. Understanding what happened to the cool gas in cooling flow clusters was one of the prime problems in extragalactic astrophysics until analysis of the XMM-Newton RGS spectra showed that they do not, in fact, cool beyond a temperature about one-third of the virial temperature. We examine high signal to noise XMM-Newton RGS and EPIC observations to determine the physical characteristics in the cool core and outskirts of the nearby rich cluster A3112 .