EPA 608 Type II study plan

Diagram the high-pressure refrigeration cycle, labeling the compressor, condenser, metering device, evaporator, and both service ports

Define the scope of Type II certification by distinguishing high-pressure and very-high-pressure appliances from those covered by other technician types

List the EPA-acceptable leak detection methods and state the operating condition each is best suited for

Explain why dry nitrogen is used for pressure testing and leak checking instead of refrigerant

Walk through a leak-detection sequence for three different symptoms: a system that will not hold a standing pressure, a system with visible oil residue, and a system with a known low charge

State the applicable leak-rate trigger and repair deadline for comfort-cooling and commercial refrigeration appliances with 50 or more pounds of charge

Describe the initial and follow-up verification tests required after a leak repair and state when each is performed

Explain the options available when an appliance repeatedly exceeds the leak-rate threshold (retrofit, retire, or continued operation with a plan)

Set up a recovery machine and cylinder and recover a small charge from a training unit without releasing refrigerant

Differentiate system-dependent (passive) recovery from self-contained recovery equipment and state when each is permitted for high-pressure appliances

Calculate the maximum allowable refrigerant weight for a recovery cylinder using its tare weight, water capacity, and the 80% fill rule

State the required recovery vacuum level in inches of mercury for high-pressure appliances manufactured before and after November 15, 1993, and for very-high-pressure appliances

Describe how to recover refrigerant from a system whose compressor will not run

Identify DOT cylinder marking, capacity, and labeling requirements that apply to recovery cylinders

Write out the full recovery-to-evacuation sequence for a rooftop unit, stating the valve positions and gauge readings checked at each step

Explain how recovery equipment capacity, hose diameter, and ambient temperature affect recovery speed and how to minimize recovery time

Describe handling of a mixed or unknown refrigerant charge and why it must not be combined with virgin refrigerant

Identify the safety checks performed before opening any system, including gauge verification and cylinder inspection

Compare recovery, recycling, and reclaiming and state where each may be performed

Convert between microns and inches of mercury and explain why microns are the preferred unit for deep vacuum measurement

Describe a triple evacuation using a nitrogen sweep and state when it is required

State the target evacuation level for a new high-pressure system and explain how a standing vacuum (decay) test is performed and interpreted

Explain the weigh-in, superheat, and subcooling charging methods and identify which system type each applies to

Explain what moisture left in a system causes and how acid, sludge, and filter-drier condition indicate it

Build a comparison table distinguishing recovery, recycling, and reclaiming by where each is performed and what each accomplishes

Explain what reclaim purity verification against AHRI 700 confirms and why field-recycled refrigerant is not reclaimed refrigerant

Describe the functions of recycling equipment components: filters, moisture removal devices, and oil separators

Identify the documentation and recordkeeping required when refrigerant is sent for reclamation

Explain how refrigerants are recovered from appliances being disposed of and the requirement before final disposal

Explain the venting prohibition, the certification requirement for technicians, and the sales restriction on refrigerant purchases

Identify the recordkeeping obligations that apply to appliances containing 50 or more pounds of refrigerant

List the personal protective equipment and first-aid steps for liquid refrigerant contact and for working in a refrigerant-filled space

Describe DOT rules for transporting recovery cylinders and the condition that removes a cylinder from service

Explain safe practices for storing, labeling, and shipping cylinders, including why a cylinder is never filled by weight without checking tare weight

Take a full-length timed practice exam under test conditions and log every missed question by domain

Re-drill the three weakest domain areas identified from the error log until each is answered correctly twice

Recite from memory the key figures table: recovery vacuum levels by appliance type and age, the 80% fill rule, and the leak-rate thresholds and repair deadlines

Re-explain the correct procedure for any question missed more than once, in writing, without reference materials