It's allways good to flush out the glycol lines before replacing the glycol. I disconnect the lines from the chiller and flush with hot water entering the return line and directing the flow line into a bucket. In older units if the cover was ever left off the bath you can find dirt, grease and any number of foreign objects. As Tapman said set the glycol temp to 29 degrees and make sure the Liquid temp in the cooler is at 38 degrees.
|