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Safety Precautions for High Pressure Air Conditioning Systems

Learn essential safety precautions for maintaining high-pressure air conditioning systems to protect against risks like exposure to toxic gases, high pressure containers, and loss of ozone. Safeguard your health and environment by following these guidelines.

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Safety Precautions for High Pressure Air Conditioning Systems

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  1. Air Conditioning Safety

  2. Loss of Ozone on Human Health • Loss of Ozone allows Ultra violet rays to reach earth • Affects our skin, eyes and immune system • Increases chances of skin cancer • Increases risk of cataracts • Reduces ability of immune system to reject cancers

  3. Personal Safety • Wear safety glasses, goggles or face shield (R-12 can cause blindness) • Burns from a engine that has not cooled off • Adequate Ventilation • Make sure car is in Park and ventilated • Caution around moving parts • Can cause frostbite on bare skin

  4. High Pressure • Containers and hoses must not leak • Containers must be able to hold high pressure without splitting or bursting • Pressures change with changes in temperatures • Pressures change with compressor or pumps

  5. High Pressure Containers • Must not overheat the pressure vessel • Must not overfill the pressure vessel • Pressure containers are usually designed with some elasticity. • Containers are made with fusible plugs or relief valves

  6. Hydrostatic Pressure • The Expansion of liquid while undergoing a temperature change. • For example: If you overfill a vessel at a lower temperature then subject it to a higher temperature, the liquid will expand and if you overfilled the vessel there will be no room for the liquid to expand and the vessel will explode!

  7. Refrigerant Cylinders • Refrigerant Cylinders are designed to withstand a maximum temperature of 130 degree Fahrenheit • To Prevent overfilling, never fill a container more than 60 percent of its gross weight. (ex: 18 LB in a 30 LB container or 30 lbs in a 50 LB container)

  8. Precautions • Do not put flame near containers • Do not steam clean container that has refrigerant in it. • Be careful of contamination • Always monitor both sides of system with gauge set (high and low side) • Before loosening fittings or bolts, etc. make sure pressure is relieved

  9. More Precautions • Use pressure relief valves on containers if subject to high temperatures • Do not allow compressor to pump liquid or be sluged oil • Keep your mind on the job • Be vigilant

  10. TOXIC GASES • TOXIC = POISONOUS • REFRIGERANTS VARY IN TOXICITY • R-12 IS HARMLESS WITH AIR • THE DANGER DEPENDS ON: • THE NATURE OF THE GAS ITSELF • ITS CONCENTRATION IN AIR • HOW LONG A TIME IT IS BREATHED

  11. DECOMPOSITION OF GASES • GASES IN THEIR NATURAL STATE MAY BE HARMLESS • MIXED WITH OTHER GASES THESE GASES BECOME TOXIC • WITH HEAT APPLIED TO THEM, THEY CAN BECOME TOXIC

  12. PRECAUTIONS RELATING TO GASES • DO NOT BREATHE IF NOT NECESSARY • DO NOT IGNORE JUST BECAUSE NO ODOR • DO NOT DISCHARGE GAS (AT ALL) • DO NOT DISCHARGE HALOCARBON GAS IN ROOM THAT HAS A FLAME

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