EPA Type III Correct questions & Answers!

What type of equipment can be worked on with Type III certification? - ANSWER low pressure The most efficient method of leak checking a charged low-pressure refrigeration unit is to - ANSWER pressurize the system by the use of controlled hot water or heater blankets When pressurizing a system, do not exceed - ANSWER 10 psig After reaching the required vacuum on an appliance when servicing, moisture is indicated by - ANSWER 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 - ANSWER 25 inches Hg EPA required evacuation levels for recovery or recycling equipment manufactured or imported on or after Nov. 15, 1993 is - ANSWER 25 mm Hg absolute What can be used to pressurize a chiller system before opening the system for a non-major repair? - ANSWER controlled hot water Refrigerant recovery from a system using R-11 or R-123 starts with - ANSWER liquid removal and is followed by vapor recovery If a strong odor is detected during the recovery process, - ANSWER a compressor burn-out may have occurred When installing more than one, pressure relief valves must be installed - ANSWER in parallel The owner must keep records of refrigerant added during service and maintenance on equipment - ANSWER 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 - ANSWER 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 - ANSWER 36 degrees Where is the purge unit located in a low-pressure system? - ANSWER the top of the condenser In a chiller, air and other noncondensables collect - ANSWER at the top section of the condenser A rupture disk for low pressure chiller will rupture at - ANSWER 15 psig The Standard for machine room safety is - ANSWER ASHRAE-15