Gary S
06-04-2013, 03:44 PM
hello all,
FTS MODEL:317-00079-000
I had a quick look at a unit yesterday and dont know much about these units and wondered if anyone on here did.
Its a precision temperature system used for testing purposes. it basically can be set at all temperatures as low as -75c for testing components at high/low temps. it has a wide hose that supplies air into a test box and the temp can be set by users. it has 2 condensing units in a cascade system set up as far as i can see. the lower compressor runs on r404a and the top one is marked R290 (propane). Think its a american unit as refrigerant quantity is in pounds and the default temp is farenheit.
Unit would not cool when i looked at it. the controls are quite complicated with lots of different controllers pcbs and touchscreen panel. put gauges on R404a and pressures were a little unusual. low back pressure and high pressure. low was less than 1 bar and high about 15 bar although adding some refrigerant made no difference. maybe the system on propane is short as both units run with no cooling. Maybe there is a control software issue?
anyway any input from someone who works on these units would be greatfully received.
thanks
FTS MODEL:317-00079-000
I had a quick look at a unit yesterday and dont know much about these units and wondered if anyone on here did.
Its a precision temperature system used for testing purposes. it basically can be set at all temperatures as low as -75c for testing components at high/low temps. it has a wide hose that supplies air into a test box and the temp can be set by users. it has 2 condensing units in a cascade system set up as far as i can see. the lower compressor runs on r404a and the top one is marked R290 (propane). Think its a american unit as refrigerant quantity is in pounds and the default temp is farenheit.
Unit would not cool when i looked at it. the controls are quite complicated with lots of different controllers pcbs and touchscreen panel. put gauges on R404a and pressures were a little unusual. low back pressure and high pressure. low was less than 1 bar and high about 15 bar although adding some refrigerant made no difference. maybe the system on propane is short as both units run with no cooling. Maybe there is a control software issue?
anyway any input from someone who works on these units would be greatfully received.
thanks