608 Type II Technician
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| Who must get certified? | show 🗑
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| show | Type I, Type II, Type III and Universal
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| Does the EPA require recertification? | show 🗑
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| Who's responsibility is it to comply to any regulation changes? | show 🗑
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| show | Any high or very high pressure refrigerants.
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| What is considered high pressure refrigerants? | show 🗑
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| What are typical refrigerants used in high pressure refrigerants? | show 🗑
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| show | Boiling points below -50 degrees F at atmospheric pressure.
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| What are typical refrigerants used in very high pressure refrigerants? | show 🗑
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| show | To reduce the amount of refrigerant in the lubricating oil.
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| show | Any device intended to establish connections between hoses, appliances, recovery/recycling machines that is designed to close automatically or manually when connecting or disconnecting to minimize release of refrigerant.
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| What is considered a major repair? | show 🗑
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| What is a moisture-indicating sight glass used for? | show 🗑
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| Where do you usually oil foaming? | show 🗑
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| show | Recovery or recycling equipment that is capable of removing refrigerant from and appliance without the assistance of components contained in the appliance.
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| What is a System-dependent Recovery Equipment? | show 🗑
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| show | Refrigerants are classified into safety groups based on toxicity and flammability. That there are six classifications.
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| show | A1, A2, A3, B1, B2, B3
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| What does the A or B signify in the ASHRAE Standard 34? | show 🗑
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| What does the 1,2,or 3 signify in the ASHRAE Standard 34? | show 🗑
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| show | Group A1 refrigerants, machinery rooms shall be equipped with an equipment room refrigerant monitor and it shall actuate and alarm and start mechanical ventilation.
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| show | When there is substantial leaks in equipment with charges of greater than 50lbs.
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| show | If the Annual leak is 35% or greater.
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| When is comfort cooler chillers and any other equipment required to do repairs? | show 🗑
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| show | Visual inspection, halide torch, electronic or ultrasonic leak detector, soap bubble test, and pressure test.
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| Should you ever use compressed air or oxygen to pressurize a system? | show 🗑
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| What are the common sources of leaks? | show 🗑
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| show | Knowledge of the function and location of all components of the refrigeration system.
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| show | Compressor, condenser, receiver, liquid line, metering device, evaporator, accumulator, and suction line.
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| show | HPG/HTG, HPL/HTL, LPL/LTL, supercooled liquid, LPG/LTG, and Superheated Gas
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| show | If, due to leaks, the required evacuation level is not attainable, or substantially contaminate refrigerant
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| show | That recovery devices made after November 15, 1993 has to be certified by a third party EPA approved lab.
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| What should you do before recovering refrigerant from an appliance? | show 🗑
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| What has to be done if you are recovering R134a from an appliance? | show 🗑
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| What is the quickest method of recovery to recover liquid from the high side? | show 🗑
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| show | Will decrease oil loss.
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| When doing a recovery, what should be recovered first and what is last? | show 🗑
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| show | By cooling the cylinder with ice.
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| Why should you use caution when the recovery device has a refrigerant cooled hermetic compressor? | show 🗑
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| What should you do once the required recovery vacuum level has been reached? | show 🗑
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| show | Check the recovered refrigerant for contamination. Check oil sample to see if the unit had a compressor burnout.
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| show | Cause trapped moisture to freeze.
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| While evacuating you notice a lot of moisture present, what should you do? | show 🗑
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| show | It should remove moisture from the refrigerant.
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| What is DOT reg 49 CFR? | show 🗑
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| show | DOT approved
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| show | Leak check the device, check and change oil if needed, know the refrigeration systems refrigerant, assure the vacuum pump is capable of pulling 500 microns, and check service valve positions.
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| When should you not energize a compressor? | show 🗑
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| show | High discharge pressure
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| show | Pressure Regulator
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| show | Functioning pressure relief device.
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| show | Replace it
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| show | In Parallel to the system.
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| show | An alcohol spray.
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