York Chiller help required

[jason09]

hi,
im new to the forum and this has probably been said before but, you really need to post more than just the machine model number post the machine "log" if there is a runing problem with the machine how can anyone help if you dont give any information on the operating conditions......we really need refrigerant pressures/temperatures in and out water temperatures both chilled and condenser position of loading,how many amps is machine drawing etc.

If i can add to the good ideas of the other posters if i went to a job and the machine was hunting and surging (without knowing pressures or temps superheats approach subcooling water temps etc) i curtainly would nt rule out water flow problems ,check pressure drops as well as the other things.