User name Feng
Log entry time 19:47:27 on January16,2001
Entry number 54841
keyword=LD2 Fan Frequency Should NOT Be Set Above 20%(48 Hz)
It seems that there is some problem with Loop 3(LD2) fan. When the fan frequency was set above20%, the fan suddenly generated a lot of heat. For example, a change of frequency from 20% to 25% would create more than 300 W heat load, while the
calculated fan heat load is about 58 W for 20%, and 75 W for 25%.
Right now, the LD2 target is run with 20% fan frequency, and it seems that this number should not be exceeded.