Related Manuals for Klimasan R600a
Summary of Contents for Klimasan R600a
- Page 1 Servicing Coolers Charged with Hydrocarbon Refrigerants R600a (Isobutane) & R290 (Propane) 24 Jan 2014; Version 2...
- Page 2 R600a General Specifications Chemical Formula Effect to Ozone : None : 3 (vs. R134a’s 1300) Greenhouse Effect Molecular weight : 58,1 kg/kmol (Heavier that air, falls down to ground) : -11,7 °C Boiling Temperature (It is in the gas form under normal atmospheric conditions) : 135 ºC...
- Page 3 Usage of R600a Gas As R600a heat transfer coefficient is almost twice that of R134a, for the same cooling output the R600a amount required will be almost 40 to 45% less than R134a. The values in right table are given for...
- Page 4 In addition to this flame sign, during the service to the products with R600a, a distinguishing label/colour etc. is used for recognition of the fact that R600a is used in the product.
- Page 5 R600a Effects of Overexposure • Ingestion: Aspiration Hazard! • Inhalation: Inhalation of vapor may produce anesthetic effects and feeling of euphoria. Prolonged overexposure can cause rapid breathing, headache, dizziness, narcosis, unconsciousness, and death from asphyxiation, depending on concentration and time of exposure.
- Page 6 R600a First Aid Measures Ingestion: Do not induce vomiting. Contact a physician immediately. Skin Contact : For liquid contact, warm areas gradually and get medical attention if there is evidence of tissue damage. Flush area with plenty of water.
- Page 7 R290 General Specification...
- Page 8 R290 Handling & Storage • Normal Handling: Keep container closed. Use only with adequate ventilation. Keep away from heat, sparks and flame. To avoid fire, minimize ignition sources. Use explosion-proof electrical (ventilating, lighting and material handling) equipment. Do not puncture or incinerate container. High pressure gas. Use equipment rated for cylinder pressure.
-
Page 9: First Aid Measures For R290
First Aid Measures for R290 No action shall be taken involving any personal risk or without suitable training. If fumes are still suspected to be present, the rescuer should wear an appropriate mask or a self- contained breathing apparatus. It may be dangerous to the person providing aid to give mouth-to-mouth resuscitation. - Page 10 6. Even though the gas amount seems to be low, flammability and high pressure factor must be considered always. 7. R600a is used with mineral oil, while R290 is used with ester (polyester) oil. 8. The same driers are being used for R290 and R600a, should have XH-9...
- Page 11 6. Always carry R600a / R290 bottle / cylinder in a safe way and protect it from crushes 7. In cold weather, it may be required to warm up an R600a / R290 tube for realizing the gas charge. In doing so, only warm water which is not hotter than 45°C...
- Page 12 1. Electrical components documented for hydrocarbon use should be used. 2. During charge, always adequate ventilation should be provided. It is not forgotten that both R600a and R290 gases are heavier than air: The gas leakage detectors should be placed on ground.
- Page 13 Apparatus For Servicing R290 and R600a Cooling Systems IMPORTANT LOW PRESSURE VACUUM “ Reclaim / Release / Disposal of MANOMETER MANOMETER Refrigerant must comply with local, GAS BOTTLE state, country disposal laws” VALVES OIL FILLING VACUUM COVER PUMP HIGH VACUUM OIL...
- Page 14 Apparatus For Servicing R290 and R600a Cooling Systems ACURATE GAS RELEASE HOSE With same apparatus, SCALE (±1g) R134a gas charge can be realized too (apparatus is SPARK FREE for HC) Before starting gas YELLOW charge, detailed information on all LOW PRESSURE HOSE...
- Page 15 Apparatus For Servicing R290 and R600a Cooling Systems VACUUM PUMP 2-STAGES High Vacuum pressure pressure gauge With 3 manometers for HC: gauge gauge SPARK FREE PUMP Vacuum High control pressure pressure valve valve control Vacuum valve valve Vacuum valve should be opened...
- Page 16 Apparatus For Servicing R290 and R600a Cooling Systems OIL FILLING OPERATION VACUUM PUMP 2-STAGES With 3 manometers for HC: SPARK FREE PUMP Fill the pump oil tank with oil up to half level of glass indicator. Be careful, as in case the...
- Page 17 Apparatus For Servicing R290 and R600a Cooling Systems After vacuuming has been achieved the yellow and blue valves should be turned on; the vacuum pump to remain still in operation, until vacuuming is completed in about 20 minutes. During vacuuming, the gauge should be fixed between 0 and 100 psi by turning on the valve under the...
- Page 18 Servicing a Cooling System Charged with R290 or R600a Do NOT forget! SAFETY FIRTS in your priority list! Unplug the cooler before attempting any maintenance work! All Service Providers should comply to local legislation!
- Page 19 Always use the proper refrigerant! It is not permitted to replace R600a or R290 with R134a or other refrigerant! The coolers running with R134a cannot be modified and/or turned into a hydrocarbon system, due to electrical safety regulations! Use always the recommended and specified amount of Hydrocarbon gas ...
- Page 20 Discharging of Gas from the System Picture 1 The gas should be removed from the system and ‘thief’ piercing pliers should be used. The gas releasing hose is attached to the thief pliers. The pliers is used on the low pressure part at service tube ‘Picture 1’...
- Page 21 Discharging of Gas from the System After the initial release of gas through the thief Picture 3 pliers and the gas releasing hose, then: 1. Cut the end of the filling tube with a tube cutter and install a quick coupler (Picture 3.a.); then pump out the system with the spark free vacuum pump.
- Page 22 Discharging of Gas from the System Gas may be dissolved in compressor’s oil. Do the following steps one by one to evacuate the gas dissolved in oil: Purge inert gas in the system (nitrogen is OK) with the pressure less than 10 bar in order to suck any gas residues.
- Page 23 Discharging of Gas from the System Picture 4 case replacing compressor then apart from service compressor pipe, the high pressure pipe and the low pressure pipes should be cut by a pipe cutter. In this processes never use flame. Before cutting use sandpaper to clean Picture 5 the tubes at cutting area (’Picture 4’...
- Page 24 Back-assembly replaced or repaired components The recommended method for connecting or replacing any part in the cooling cycle is the one that does not involve fire or welding. In doing so the LOKRING couplers are used, as well as special pliers and sealing liquid for the coupler application: In some countries, the LOKRING couplers are used for any connection regardless the...
- Page 25 Back-assembly replaced or repaired components Apart from the LOKRING method, brazing can be used for connecting or replacing any part in the cooling cycle, under the following conditions ONLY: 1. The cooling cycle will be ABSOLUTELY free of refrigerant gas and proper purging in order to remove any traces of refrigerant has been done, as instructed in slide 22 earlier 2.
- Page 26 Welding (Brazing) and Control Processes Check all cut tubes carefully with a HC gas detector. Make sure that no refrigerant remained in the cooling cycle and the working area. If gas traces found in the cycle then purge the system with a flash liquid pressurized with nitrogen.
- Page 27 Welding (Brazing) and Control Processes Picture 10 Picture 11 Remove the service tube with valve cup of a Remove needle before fitting and brazing using as tool the back of the cup. service pipe having a valve Replace compressor (if need replacement), then fix & weld a ‘Picture 10‘...
- Page 28 Vacuuming the Cooling System Either LOKRING or careful Picture 14.c. brazing used, the vacuuming & charging continuous the same way: Picture 14.a. Picture 14.b. Screw the needle at valve of service tube with the back of its cup ‘Picture 14.a., b, c.’. The tube should have the Check Valve Adaptor to avoid back flow of refrigerant after charging, since HC refrigerant is very sensitive to charged amount.
- Page 29 Vacuuming the Cooling System After the vacuuming completion, valve 1 is closed and vacuum pump is switched off. Then Picture 16 any gas leakage, is controlled through the gauges, number 2 and 3. If there is a leakage then values on this gauge will increase.
- Page 30 Charging the Cooling System with Gas Picture 18 While the valve 1 is closed and before charging with gas the system, tare the scale. To start gas charging the gas valve 2, which is shown in Picture 18, is opened. Then the Valve 1 is opened slowly and the gas is charged into the system.
- Page 31 Charging the Cooling System with Gas Picture 19 After charging is over, stop the compressor and remove the low pressure hose and charging apparatus. Gas leakage testing should be done again using the gas dedector. Screw back the cap on the valve of the preassembly tube. Service Providers MUST comply to local regulations &...
- Page 32 Tools for Repairing Coolers with Hydrocarbon Refrigerants Hydrocarbon Gas Detector Swage tool ACURATE SCALE (±1g) Thief Pliers Lokring pliers cutter Capillary cutter Gas coupler Service Providers MUST comply to local regulations & legislation!
- Page 33 Never attempt to pierce a cylinder; even an empty one! Dispose of properly. Place back the valve cup when not in use! Never attempt to decant R600a or R290 gases from one cylinder to another! Service Providers MUST comply to local regulations & legislation!
- Page 34 Guidelines on Brazing Tubes must be clear from debris: use sandpaper to clean and swipe off any remaining particles • Insert one tube into the other: the male tube must be inserted into female tube the minimum as deep as the outer diameter of the male tube •...
-
Page 35: Safety Test
Service and Maintenance Tips SAFETY TEST Before plugging in the cooler after a repair a Safety Test Should be Run Service Providers MUST comply to local regulations & legislation! - Page 36 Service Providers MUST comply to local regulations & legislation!
- Page 37 Service Providers MUST comply to local regulations & legislation!
- Page 38 Service Providers MUST comply to local regulations & legislation!
- Page 39 Service Providers MUST comply to local regulations & legislation!
- Page 46 Do & Don'ts When Connecting Coolers & Freezers to Power Supply Extention cords & multi plug sockets never be used! Make sure that there is a circuit breaker / safety relay (RCD, RCCB) installed at outlet fuse box Plug in products having their original power cord and plug only into a grounded socket! May check proper socket grounding by Socket Testers Squashed or pinched power cables, damaged by...