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6 CHAPITRE 6 PAGE 08 • Never force connections that do not fit. Ensure the cylinder valve outlet threads are the same as what is being connected to it. • Cylinders should always be stored upright, and larger cylinders should be chained in place to avoid falling as shown here: • It is preferable to store cylinders within a secured cage. • Cylinders stored in the open must be protected from extremes of weather and direct sunlight. • Always check the refrigerant number before charging to avoid mixing refrigerants. • Check the cylinder stamp to ensure the cylinder is safe. Inspect refrigerant cylinders regularly. Do not use the cylinders if they show signs of rust, distortion, denting, or corrosion. • Never expose cylinders to continuous dampness, salt water, or spray. They should be kept in a cool, dry and properly ventilated storage area, away from heat, flames, corrosive chemicals, fumes and explosives, and be otherwise protected from damage. • Cylinders should never be exposed to temperature above 52°C. • Store full and empty cylinders apart to avoid confusion. They must be clearly marked. • Store cylinders secured and upright in an area where they will not be knocked over or damaged, and never store cylinders near elevators or gangways, or near highly flammable substances. • Refrigerant cylinders should never be filled over 80% of their capacity because the liquid expansion may cause the cylinder to burst – as shown in this illustration: Cylinder Temp. Starting with cylinder 75% full by volume Cylinder Temp. Starting with cylinder 85% full by volume NEVER 21°C 38°C 75% 80% Space Space 21°C 38°C 54°C 66°C 90% 95% Space Space 54°C 66°C R-134a R-134a R-401A PAGE 09 • Any evidence of a leak, visual or by a leak detector must be corrected immediately, by either stopping the leak or transferring all products from the leaking container into a secure container to allow for repairs. 125lbs 125lbs 125lbs • Never refill disposable cylinders with anything. Do not use CHAPITRE 6 disposable refrigerant cylinders as compressed air tanks. 85% 95% Space Space 100% Effect of temperature on liquid volume inside a cylinder 130 Safe Refrigerant HandlingPDF Image | Manual for Refrigeration Servicing Technicians
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