Section 7Refrigeration System7-54FILTER-DRIERSThe filter-driers used on Manitowoc ice machines aremanufactured to Manitowoc specifications.The difference between Manitowoc driers and off-the-shelf driers is in filtration. Manitowoc driers havedirt-retaining filtration, with fiberglass filters on boththe inlet and outlet ends. This is very importantbecause ice machines have a back-flushing actionwhich takes place during every harvest cycle.These filter-driers have a very high moisture removalcapability and a good acid removal capacity.The size of the filter-drier is important. Therefrigerant charge is critical. Using an improperlysized filter-drier will cause the ice machine to beimproperly charged with refrigerant.Listed below are the recommended O.E.M. fieldreplacement driers:Model DrierSizeEndConnectionSizePartNumberJ200 J250J320 J420J450 J600UK-032S 1/4 89-3022-9J800 J1000J1300 J1800 UK-083S 3/8 89-3026-9Suction Filter 1 UK-165S 5/8 89-3028-91Used when cleaning up severely contaminated systemsImportantDriers are covered as a warranty part. The driermust be replaced any time the system is opened forrepairs.TOTAL SYSTEM REFRIGERANT CHARGESImportantRefer to the ice machine serial number tag to verifythe system charge.Series Version ChargeJ200 Air-Cooled 18 oz.Water-Cooled 15 oz.J250 Air-Cooled 18 oz.Water-Cooled 13 oz.J320 Air-Cooled 20 oz.Water-Cooled 16 oz.Air-Cooled 24 oz.J420/J450 Water-Cooled 22 oz.Remote 6 lb.Air-Cooled 32 oz.J600 Water-Cooled 26 oz.Remote 8 lb.Air-Cooled 36 oz.J800 Water-Cooled 31 oz.Remote 8 lb.Air-Cooled 38 oz.J1000 Water-Cooled 34 oz.Remote 9.5 lb.Air-Cooled 48 oz.J1300 Water-Cooled 50 oz.Remote 12.5 lb.Air-Cooled 65 oz.J1800 Water-Cooled 52 oz.Remote 15 lb.NOTE: All ice machines on this list are charged usingR-404A refrigerant.
