Neddy
16-03-2011, 08:45 PM
Hi everyone,
Long time reader, first time poster so go easy on me .I have two Stulz underflow units side by side in a computor room. The model no. is CCD 121A. Unit on the right works fine. Replaced the compressor on the left unit and ran it up but found it not cooling well so faulted the expanson valve. Suction pressure was high and had a high superheat. The valve I faulted is A Danfoss TEZ2 which was not the manfactures orginial valve. The manfactures valve is an Alco TX3 N25mm PCN 801929. I was unable to get this valve so an Alco TIE NW PCN 802436 was sourced for me. Now my suction pressure is 5.5bar much the same as the last time.High superheat. Liquid line pressure 18bar. Suction temp 18. Discharge 90. Evap Air on 23 ,air off 18.
Do you always have to change expansion valves on close control units like for like or am i missing something?
Any help would be much appreciated.
Long time reader, first time poster so go easy on me .I have two Stulz underflow units side by side in a computor room. The model no. is CCD 121A. Unit on the right works fine. Replaced the compressor on the left unit and ran it up but found it not cooling well so faulted the expanson valve. Suction pressure was high and had a high superheat. The valve I faulted is A Danfoss TEZ2 which was not the manfactures orginial valve. The manfactures valve is an Alco TX3 N25mm PCN 801929. I was unable to get this valve so an Alco TIE NW PCN 802436 was sourced for me. Now my suction pressure is 5.5bar much the same as the last time.High superheat. Liquid line pressure 18bar. Suction temp 18. Discharge 90. Evap Air on 23 ,air off 18.
Do you always have to change expansion valves on close control units like for like or am i missing something?
Any help would be much appreciated.