34 35 5. Other Temperatures Below temperatures should not be exceeded the refrigerant system to be operated normally. If the test temperature is not indicated, it is measured at the ambient temperature. ※ Measurement location Suction Gas Temperature is measured at the distance 15cm of the insulated surface suction pipe from weldedcase. Discharge Gas Temperature is measured at the distance 5cm of the insulated surface discharge pipe from welded case. 6. Refrigerant Charging For each refrigerant system, the optimal refrigerant Charging amount should be determined in an appropriate test laboratory in order to obtain the best working condition. If the refrigerant amount exceeds or lacks compared to the proper amount range, it’ll be caused loss of cooling capacity, lowering of efficiency and damage of compressor life. The refrigerant charge of the refrigerant system must not exceed above No.2 start condition as suction and discharge pressure. 7. Operating condition The refrigerant system should be maintained as below table. Application Refrigerant Suction Gas Temp Discharge Gas Temp Compressor Upper Surface Temp LBP R134a Than the ambient temperature -2℃(28℉) ~ +1℃(34℉), to prevent dew formation. Max. 100℃(212℉) Peak 115℃(239℉) Max. 100℃(212℉) in the hot side Min. 5℃(41℉) in the low side at 43℃(109℉) ambient temp. R600a HBP R134a Max. 100℃(212℉) at 26.7℃(80℉) ambient temperature Peak 115℃(239℉) at 32.3℃(90℉) ambient temperature Max. 100℃(212℉) in the hot side Min. 5℃(41℉) in the low side at 32.2℃(90℉) ambient temp. Application Refrigerant Compression Ratio Operated Ratio Ambient Temperature Refrigeration Oil On/Off Cycle Time LBP R134a Max. 12.7 Max. 65% Based on Ref. Normal-Normal Condition Max. 5℃ ~ 43℃ (Max. 41℉ ~ 109℉) TAN 0.01mgKOH/ g max. Moisture 10ppm max. Restarting time limit must be longer than 5 minutes R600a Max. 12.4 HBP R134a Max. 3.9 Max. 65% Based on Normal-Normal Condition at 26.7℃ ambient Temp. TAN 0.01mgKOH/ g max. Moisture 20ppm max. Max. 6 times/ hours 8. Evacuation of cycle Prevent non-condensible gases, such as air, from permeating into the cycle. Air or non-condensible gases in the refrigerant cause a decline in cooling capacity and a rise in input wattage due to high discharge pressure. In particular, air(Oxygen) cause the generation of sludge and shortening of compressor life. Therefore, the non-condensible gas in R134a system must not exceed 1%(vol.) The recommendable vacuum level is under 0.08 Torr(mmHg), and the evacuation time must be 40 minutes or more with the capacity of vacuum pump of 300 LT/min or more. The vacuum pump should be used exclusively, and it is better to vacuum simultaneously in high and low pressure sides with a pump per system. It is not allowed that putting electric power into the compressor with a vacuum condition, then electric spark will be occurred in the compressor and compressor can be damaged critically. (Vacuum Discharge) 9. Filter dryer The filter dryer must be chosen with the molecular sieve suitable to the refrigerant type as below. 10. Notice in handling, storage and transportation of compressor 10-1. Compressor with the removal of rubber cap from tube should be assembled with the cycle as soon as possible. It is not allowed that the compressor without rubber-cap is left in the air more than 15 minutes. 10-2. Compressor might be affected by the environmental condition which it is stored. So, compressor that is charged with nitrogen and sealed should be used within recommendation period. After recommendation period, compressor can be used aftervalidating the moisture level of compressor inside. 10-3. The finished product(compressor adopted to application) should be positioned upright during transportation. If the other transportation condition is needed, the discussion with SAMSUNG must be done in advance. ※ If a filter dryer of the refrigerant system is not chosen properly, it can be a source of the indicated causes as below table. R134a R600a FILTER DRYER XH-7 or XH-9 XH-5 Problems Appearances Ice build-up The moisture in the capillary tube is frozen, then it reduces the cross-sectional area of capillary tube and finally obstruct the capillary tube. Acid build-up The moisture reacts with refrigeration oil and then creates acid. Acid is caused as bellow chemical typical marks and consequences. - Copper plating of valve plate, valve reeds, crankshaft, bearing, block, frame etc. - Etching of electric motor insulation with burning of motor winding. - Destruction of the filter with disintegration of molecular sieve and build-up of “dusts” Oil contamination The moisture causes acidification and reduction of the lube capability of the refrigeration oil withchange of oil color as brown. It can cause build-up of sludge with subsequent poor lube of compressor. R134a R600a Storage 8 months 10 months Reciprocating Compressor APPLICATION GUIDE Reciprocating Compressor
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