AND ANSWERS SURE A+
✔✔Leak rate must be calculated when - ✔✔Topping off or recharging due to loss of
refrigerant
✔✔How to determine normal charge for leak rate calculations - ✔✔Use the charge
listed on the equipment nameplate
✔✔Comfort cooling leak rate threshold - ✔✔10% annual leak rate requires repair
✔✔Industrial process refrigeration classification - ✔✔System is classified based on
highest percentage of use
✔✔Example of system classification - ✔✔55% industrial use and 45% comfort cooling =
industrial classification
✔✔Leak repair deadline (ozone-depleting refrigerant) - ✔✔Must be repaired within 30
days
✔✔Retrofit or retirement timeframe - ✔✔Must retrofit or retire appliance within 18
months if above threshold