McQuy centrifugal chiller wsc 079

[khaled hilaly]

Hi friends

I have aproblem in operating McQuay centrifugal chiller ( WSC 079) , when operating the chiller for 3 minutes th microtech disply shows ( Low disch superheat ) then the chiller shut down and another alarm ( No starter trasnsition ) appear on disply , please help me on solving this problem , so many thanks

[ptsac]

Hi Khaled,
low disch superheat is just info I think. No starter transition would indicate that the delta contactor has not come in, or maybe the auxiliary contact on the delta contactor is faulty. Please check that the star delta starter is operating correctly.