HRAI ODP Refrigerant Handling case studies
HRAI ODP Refrigerant Handling · Put your knowledge to work in context.
The HRAI Ozone Depletion Potential (ODP)/Ozone Depleting Substances (ODS) Refrigerant Handling certification is a Canadian credential offered through the Heating, Refrigeration and Air Conditioning Institute of Canada (HRAI), a non-profit national trade association founded in 1968. HRAI describes the program area as "Canada's Ozone Layer Protection Awareness," and its refrigerant course family includes the ODP/ODS Course and the Low GWP/A2L Refrigerants Course, with delivery partners listed separately. The HRAI ODP Refrigerant Handling case studies are 5 cases and about 3,508 words.
1Split System Retrofit With Mixed Refrigerant Charge
A technician is called to a 12-year-old 5 kW split air-conditioning unit in a small office. The nameplate is faded but the service log indicates the original charge was R-22.
775 words, about 4 min2R-410A Rooftop Unit With Suspected Cross-Contamination
A facilities team reports that a rooftop packaged unit using R-410A has been serviced three times in two years, each time by a different contractor. The current technician finds the unit short of charge, with a suction pressure lower than expected for the measured ambient and a compressor drawing more current than the nameplate rating.
698 words, about 3 min3Recovery Cylinder Overfill During a Chiller Decommission
A technician is decommissioning a small air-cooled chiller that holds 18 kg of R-134a. The only recovery cylinder on site is a 25 kg water-capacity cylinder with a tare weight of 14 kg and a marked gross weight that the technician cannot read because the stamp is corroded.
687 words, about 3 min4Leak Repair on a Refrigerated Display Case in a Busy Store
A supermarket refrigerated display case running R-448A has a slow leak. The store is open, and the case holds chilled food that must stay below 5 C.
706 words, about 4 min5New Install With an Unlabelled Recovery Cylinder and a Tight Deadline
A technician is commissioning a new 8 kW split system using R-32. The install is complete and the system has been pressure-tested with nitrogen and evacuated.
642 words, about 3 min