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6 Personal protection Prior to working on a system, or handling refrigerant, technicians should be adequately equipped with the appropriate safety equipment: • Check the MSDS for the refrigerant, lubricant and other substances in order to determine the proper level of protection required. • Wear safety goggles and gloves at all times when handling refrigerants or servicing a refrigeration system. Ensuring a safe work area Before working with a refrigerant, the local area must be prepared accordingly in case of an accidental release: • Proper ventilation or respiratory protection is required for any work on equipment in an enclosed area where a leak is suspected. • Always ventilate or test the atmosphere of an enclosed area before beginning work. Many refrigerants which may be undetectable by human senses are heavier than air and will replace the oxygen in an enclosed area causing loss of consciousness. • Evacuate the area if a large spill occurs. Return only after the area has been properly ventilated. • Always ventilate the work area before using open flames. Safe working with a system When working on a system, several basic considerations should be borne in mind: • Always check for the correct operating pressure of the refrigerant used. Use gauges to monitor the system pressure. • Charge the refrigerant into the low side of the system to avoid damaging the compressor, or causing the system to rupture. • Refrigerant oil in a hermetic compressor is often very acidic causing severe burns. Avoid skin contact with this oil. Wear the proper respiratory protection while working with refrigerants. Inhalation of refrigerants can cause intoxication, induce anaesthetic effects, cause stumbling, shortness of breath, tremors, convulsions, and the heart to cease functioning properly and may be fatal. 128 Safe Refrigerant HandlingPDF Image | Manual for Refrigeration Servicing Technicians
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