At the Coke plant where I work we have a Manitowac SY0505W water cooled ice maker. This morning when it started a cycle I noticed a hammering or ticking sound. I went back to take a look and it sounded like water hammering or a valve-solenoid "fluttering" If I partially close the water valve to the machine it quits but did start again a few minutes later. Can anyone tell me what to look for? Would it be the water solenoid? Thanks for the help.