Why can't I get into CWM recovery mod on my Galaxy Grand I9082?

[AC Question]

can't get into cwm recovery mod in galaxy grand I9082

so i want to root my phone and for that i installed cwm recovery via odin but after installing cwm when i press volume up + menu key + power key at the same time and release it when i see samsung logo it doesnt go into recovery mod instead phone restarts and the samsung logo show up again and it starts normally what is the problem please help me