EPA 608 Type III Practice Tests

Free EPA 608 Type III Exam Practice Test 2. 25 questions covering leak check pressure limits and rupture failure, air in low-pressure systems causing high head pressure, partial charge leak testing using external heat, rupture disk purpose, R-11 vacuum requirement before charging, compressor head pressure from incomplete evacuation, rupture disk opening pressure, purge unit contamination control, rupture disk location on evaporator, water circulation during evacuation, R-11 boiling point at atmospheric pressure, oil degas procedure, centrifugal vs reciprocating compressors, variable inlet guide vanes, 10 PSIG max recovery pressure, UV dye leak detection, filter drier replacement requirement, hot gas bypass surge prevention, chiller capacity range, R-245fa properties, rupture disk replacement procedure, comfort cooling leak threshold, two-phase recovery from low-pressure chillers, ASHRAE vacuum leak test, and EPA 608 certification requirements.

Free EPA 608 Type III Exam Practice Test 3. 25 questions covering 350-ton R-11 chiller vapor quantity, large vacuum pump freeze prevention with nitrogen, idle low-pressure system pressure maintenance, liquid charging temperature conditions, purge unit purpose, heater placement for faster vapor evacuation, leak locations at gaskets and fittings, rupture disk failure at 10 PSIG, water-cooled condenser water source, low-pressure system refrigerant direction, Type III certification for sub-atmospheric systems, R-123 environmental benefits, surge and hot gas bypass, electronic and halide torch leak detection, rupture disk bursting emergency procedure, Section 608 requirements, compatible recovery cylinders, low-pressure recovery procedures, oil heater degas procedure, cooling tower function, EPA recovery level for Type III, centrifugal compressor operation, ASHRAE Standard 15 monitoring requirements, and lubricating oil for R-123.

Free EPA 608 Type III Exam Practice Test 4. 25 questions covering major repair definition (evaporator), vapor recovery preserving oil, large vacuum pump freeze risk, non-condensables causing high discharge pressure, hot water as best operating-system leak check, heating bottle for vapor charging, water circulation for refrigerant freeze prevention, high head pressure as leak indicator, moisture causing acid formation, large leak system depressurization, R-11 CFC properties and phase-out date, Type III scope for sub-atmospheric systems, centrifugal compressor impeller operation, high-efficiency purge unit, R-245fa as HFC replacement, oil selection for R-123, 25 mm Hg EPA recovery requirement, centrifugal surge and prevention, variable inlet guide vanes, leak rate obligations for owners, R-11 production ban, comfort cooling threshold for chilled water systems, rupture disk burst procedure, halide torch and electronic detector use, and ASHRAE Standard 15 monitoring.

Free EPA 608 Type III Exam Practice Test 5. 25 questions covering centrifugal chiller charging through evaporator valve, filter drier replacement requirement, R-410A recovery cylinder pressure rating, nitrogen to prevent moisture freeze during evacuation, pressure reduction causing liquid to vaporize, liquid recovered before vapor, 30-day leak repair deadline, 20% commercial refrigeration leak threshold, 50 lb system exemption from mandatory repair, rupture disk relief pressure, R-11 CFC ODP and GWP properties, sub-atmospheric operation defining Type III systems, centrifugal chiller capacity for large buildings, surge at low load conditions, hot gas bypass purpose, accumulator after evaporator, ASHRAE Standard 15 detector alarm requirements, 25 mm Hg recovery level, oil selection for R-11 to R-123 retrofits, R-11 vs R-123 GWP comparison, low-loss fittings on service hoses, chiller startup checklist, evaporator freeze detection, pre-service vacuum requirement, and comfort cooling chilled water systems.

Free EPA 608 Type III Exam Practice Test 6. 25 questions covering purge compressor location on condenser, maximum leak test pressure of 10 PSIG, hydrostatic tube test for water-side leaks, purge unit removing non-condensables, rupture disk name and function, rupture disk relief pressure 15 PSIG, low-pressure system below atmospheric operation, 50 lb exemption from mandatory repair, 20% commercial refrigeration threshold, nitrogen purging not permitted with refrigerant in system, R-11 classification and phase-out, R-123 as HCFC replacement, Type III technician servicing low-pressure equipment, centrifugal chiller component identification, R-245fa long-term HFC replacement, oil degas procedure, EPA 25 mm Hg recovery requirement, rupture disk event and replacement, comfort cooling vs commercial refrigeration thresholds, ASHRAE Standard 15 exterior signage, oil compatibility with R-123, surge prevention methods, electronic leak detection for R-11 and R-123, centrifugal compressor no valves, and EPA Section 608 owner and technician responsibilities.

Free EPA 608 Type III Exam Practice Test 7. 25 questions covering accumulator location between evaporator and compressor, oil degassing at about 130°F, post-recovery vacuum rise test, vapor-first charging procedure, pressure relief device requirements, nitrogen use with large vacuum pumps, ASHRAE vacuum rise from 1 mm to 2.5 mm indicating leaks, water circulation during evacuation, short evacuation hoses, high discharge pressure from non-condensables, R-11 vs R-123 comparison, Type III application identification, centrifugal chiller parts-load surge, Section 608 record-keeping requirements, EPA refrigerant purchase and sale regulations, reclaimed refrigerant AHRI 700 purity, UV dye for low-pressure systems, hot gas bypass stuck open failure mode, Type III re-certification, comfort cooling 10% threshold calculation, oil heater prevents bearing damage, chiller room emergency procedures, IGV diagnostic troubleshooting, and low-pressure chiller seasonal startup checklist.

Free EPA 608 Type III Exam Practice Test 8. 25 questions covering large vacuum pump risks with trapped water, air entering low-pressure systems through leaks, liquid charging at 36°F saturation temperature, heating refrigerant bottle to speed vapor charging, oil-free vapor recovery, external heat for partial charge leak checks, R-11 boiling point at atmospheric pressure, rupture disk connected to evaporator, freezing risk when charging under deep vacuum, purge compressor on condenser top, R-123 vs R-11 retrofit comparison, Type III certification exam requirements, centrifugal chiller oil analysis and acid testing, filter drier replacement policy, ASHRAE Standard 15 review, refrigerant cylinder handling safety, Section 608 penalties and violations, triple evacuation procedure advantages, EPA recovery equipment certification, low-pressure chiller monitoring and diagnostics, and refrigerant leak repair documentation requirements.

This practice test focuses on Type II high-pressure equipment, including split systems, heat pumps, rooftop units, and light commercial refrigeration. It covers the required evacuation levels based on pressure class and charge size (0 or 10 in. Hg for high-pressure, 10 or 15 in. Hg for medium-pressure), plus a few Type III comparison questions.

This test covers Type II refrigerant recovery methods: standard vapor recovery, faster liquid recovery, and push-pull recovery for large liquid charges. You will also see a few Type III questions for comparison.

This test focuses on Type II leak detection methods: electronic leak detectors, UV dye, soap bubble solution, and nitrogen pressure testing. It also compares these methods to the different approach needed on Type III chillers.

This test focuses on Type III equipment: large centrifugal chillers used in hospitals, malls, and universities. It covers the below-atmospheric pressure distinction and compares chiller certification scope to Type II.

This test covers the standard Type III leak testing method: using hot water to raise a chiller's internal pressure above atmospheric before checking for leaks. It also covers the 10 psig limit when nitrogen is used instead.

This test focuses on purge units, a device unique to Type III low-pressure chillers. It covers how purge units remove non-condensable gases like air and moisture while returning refrigerant vapor to the system.

This test mixes Type II and Type III scenario questions side by side, testing your ability to classify equipment, match certification scope, and recognize the correct leak testing and recovery approach for each type.

This test covers the shift from R-410A to lower-GWP R-32 and R-454B refrigerants under the AIM Act, and the added ventilation, leak-detection, and hot-work precautions needed for mildly flammable A2L refrigerants.

This test covers the venting ban and substantial leak repair rules under Clean Air Act Section 608, including the 10% comfort cooling, 20% commercial refrigeration and 30% industrial process thresholds, applied to both Type II and Type III equipment.

This final mixed review test combines Type II and Type III topics from across the series: evacuation levels, recovery methods, leak detection, purge units, certification scope, refrigerant transition, and leak rate rules.