EPA Type III Questions and Answers 100% Pass

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EPA Type III Questions and Answers 100% Pass What type of equipment can be worked on with Type III certification? ✔✔low pressure The most efficient method of leak checking a charged low-pressure refrigeration unit is to ✔✔pressurize the system by the use of controlled hot water or heater blankets When pressurizing a system, do not exceed ✔✔10 psig After reaching the required vacuum on an appliance when servicing, moisture is indicated by ✔✔multiple rises in pressure over a period of time with increase of pauses between rises EPA required evacuation levels for recovery or recycling equipment manufactured or imported before Nov. 15, 1993 is ✔✔25 inches Hg EPA required evacuation levels for recovery or recycling equipment manufactured or imported on or after Nov. 15, 1993 is ✔✔25 mm Hg absolute What can be used to pressurize a chiller system before opening the system for a non-major repair? ✔✔controlled hot water Refrigerant recovery from a system using R-11 or R-123 starts with ✔✔liquid removal and is followed by vapor recovery If a strong odor is detected during the recovery process, ✔✔a compressor burn-out may have occurred When installing more than one, pressure relief valves must be installed ✔✔in parallel The owner must keep records of refrigerant added during service and maintenance on equipment ✔✔with charges of 50 lbs. or greater After all the liquid has been removed from an average 350 ton approximately how much vapor refrigerant remains in the system ✔✔100 lbs. When charging a system with a low pressure refrigerant should be introduced as a vapor to raise saturation temperature to a minim of ✔✔36 degrees Where is the purge unit located in a low-pressure system? ✔✔the top of the condenser In a chiller, air and other noncondensables collect ✔✔at the top section of the condenser A rupture disk for low pressure chiller will rupture at ✔✔15 psig The Standard for machine room safety is ✔✔ASHRAE-15 Who establishes the refrigerant safety group standard ✔✔ASHRAE A low pressure chiller used for comfort cooling must be repaired if it has an annual leak rate of ____ of the total charge. ✔✔15 percent ASHRAE 34 Standard Safety classifies R-134a as ✔✔A1 Because a low-pressure system operates below atmospheric pressure (in a vacuum), ✔✔leaks in the gaskets or fittings will cause air and moisture to enter the system To repair a chiller operating with R-22 the technician ✔✔must have a Type II certification What refrigerant has a safety classification of B-1? ✔✔HCFC 123 (R-123) During evacuation of systems with large amounts of water, it may be necessary to ✔✔increase pressure by introducing nitrogen to counteract freezing When leak testing a low pressure chiller, the maximum pressure to use is ✔✔10 psig

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