YS Compressor Oil YORK oil types approved for YS Chillers and the quantity of oil required are listed below. YORK OIL TYPES CHILLER SIZE R-22 OIL TYPE R-134a OIL TYPE SYSTEM QUANTITY (GAL) S0 C H 10 S1 C H 10 S2 S H 10 S3 S H 10 S4 S H 15 S5 S H 15 YORK "C" Oil is a mineral oil. YORK "P" and "H" oil are polyolester (POE) oils. Polyolester oil is very hygroscopic and will absorb moisture from the atmosphere if it is not handled properly. Polyolester oil should be stored in metal containers. Plastic containers should not be used because they allow moisture to permeate into the oil. Yearly oil analysis is recommended to verify the continued use of the compressor oil. It is very important to take the oil sample after the oil filter. The slide valve cylinder has two pressure service ports that are ideal for drawing the oil sample. The oil sample should not be left open to the atmosphere for more than 15 minutes since it will absorb moisture from the atmosphere and may yield erroneous results. Compressor oil should be changed when the oil analysis indicates the oil has moisture and acid numbers are in excess of the limits set below. COMPRESSOR OIL LIMITS YORK OIL TYPE MOISTURE CONTENT (by Karl Fisher) ppm TAN (Total Acid Number) mgKOH/ml C LESS THAN 50 PPM LESS THAN 0.05 H LESS THAN 300 PPM LESS THAN 0.5 S LESS THAN 300 PPM LESS THAN 0.5 The YORK YS Chiller Compressors use rolling element bearings (ball and roller bearings); no sleeve bearings are used. Oil analysis that include metals may cause confusion when the results are compared to other equipment that utilize different bearing types. Iron and copper are examples of metals, which will appear in oil analysis that include metals. Other metals that may appear are Titanium, Zinc, Lead, Tin and Silicon. These metals should be ignored and are acceptable in quantities of less than 100 ppm. If an oil analysis should indicate high levels of Iron (more than 300 ppm) combined with Chromium and Nickel (more than 50 ppm), consult your local YORK Service Office – this could indicate bearing damage and wear. The immersion oil heater will maintain the oil temperature between 40 ℃ and 46 ℃. The immersion oil heater is interlocked with the oil level float and will be de-energized when the oil level float drops to the low oil safety set point. See photo below. |