Welcome to the F-Gas Refrigerant & ODS Regulations: Category I – leak checking, recovery, installation, service and maintenance of equipment quiz which comprises of 28 multiple choice questions.

1. Which one of the following terms describes enthalpy?
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2. On the diagram shown, process line 5 to 6 represents?

Refrigeration, Air Conditioning & Heat Pump Pressure Enthalpy Diagram

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3. The function of an evaporative condenser is to
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4. Subcooling is established when
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5. The most efficient operating temperatures for a chill coldroom designed to maintain a space temperature of +20C with ‘air on’ to the condenser at +32C are
5 out of 28
6. Which one of the following refrigerants is most likely to suffer from changes in it’s composition after leakage from a static system?
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7. Which of the following refrigerant conditions will provide a clear liquid line sight glass?
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8. Which one of the following environmental issues is addressed by the Kyoto Protocol?
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9. Which one of the following refrigerants has least impact on direct global warming?
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10. The Energy Efficiency Ratio of a heat pump system is found from?
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11. As the difference between condensing temperature and evaporating temperature decreases
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12. Which ‘F’ Gas Category qualification is required to recover refrigerant from an air conditioning system which has a charge of 7.5 kg of R407C?
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13. Which of the following saturation temperatures satisfies the BS EN 378 requirement for pressure testing the high side of cooling systems fitted with air cooled condensers?
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14. Which of the following is most likely to increase refrigerant leakage potential from an air to water heat pump system? Excessive
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15. Which one of the following is the correct method for transporting recovered waste compressor oil back to licensed waste manager?
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16. The function of the compressor is to
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17. Which one of the following conditions is most likely to indicate imminent compressor motor failure on a blast freezer system? The compressor body is
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18. Which one of the following condenser types would run with the lowest condensing temperature?
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19. A clean condenser on an air conditioning system leads to
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20. For every one degree Celsius that the evaporating temperature is increased, cooling capacity
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21. Which one of the following is most likely to cause the evaporator of an unprotected water chiller to freeze solid?
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22. The function of an expansion valve is to
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23. Which one of the following Thermostatic Expansion Valve superheat settings is likely to cause a system hermetic compressor to run continuously and overheat?
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24. Which one of the following refrigerants is classified as an Ozone Depleting Substance?
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25. Which one of the following international agreements is responsible for the phase out of HCFCs?
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26. Which one of the following refrigerant hazards can make an affected person feel ‘high’?
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27. Residual flux on the outside of a brazed copper pipe must be removed because
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28. Which one of the following pipe diameters is most likely to fail when strength tested with Oxygen Free Nitrogen?
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