Koeltechnicus Cat I study plan

Map the F-gas regulation scope and explain which equipment categories and refrigerant charges fall under category I responsibilities.

Define global warming potential and CO2-equivalent, then convert at least five example charges into tonnes CO2e by hand.

List the legal obligations of a certified technician: leak checks, record keeping, labelling, and handling of recovered refrigerant.

Identify the penalties and enforcement consequences of non-compliance for both technician and operator.

Explain the environmental impact chain from refrigerant emission to ozone depletion and climate change.

Compare ODP and GWP values for the main refrigerant families and justify why a low-GWP choice is not automatically the safest choice.

Describe the containment hierarchy: prevention first, then detection, then recovery.

Summarise the F-gas phase-down schedule and what it means for service practice on existing equipment.

Sequence the full recovery procedure for small self-contained units and for larger split systems.

Select recovery equipment and cylinders appropriate to the refrigerant, charge size, and system type.

Explain cylinder filling limits, non-return safeguards, and why cylinders must never be overfilled.

Describe safe handling, transport, and storage rules for recovered refrigerant containers.

Perform leak detection using at least three methods and state the sensitivity and limits of each.

Apply the correct leak-check frequency for a given charge size and system type.

Describe leak repair obligations, deadlines, and what to record after a repair.

Explain the rules for reclaiming, recycling, and destroying recovered refrigerant.

Trace the vapour-compression cycle and label pressure, temperature, and phase at each of the four main points.

Read a pressure-enthalpy diagram to locate superheat, subcooling, and the compression ratio for a given operating condition.

Identify the main system components and explain the function of each in the circuit.

Interpret common fault symptoms such as high superheat, low subcooling, and abnormal discharge temperature.

Perform commissioning steps: pressure testing, evacuation to target vacuum, and charging by weight.

Explain why evacuation must reach a defined vacuum level and how moisture and non-condensables damage a system.

Describe brazing and connection practices that keep the circuit clean and leak-tight.

Carry out a leak test on a newly assembled circuit and document the result.

Diagnose electrical and control faults using a systematic measurement sequence.

Explain the role of safety devices such as high-pressure switches, low-pressure switches, and thermal protection.

Describe maintenance tasks for compressors, condensers, evaporators, and expansion devices and their inspection intervals.

Plan a preventive maintenance visit with a prioritised task list and required tools.

Integrate legal requirements with practical service steps so that every job ends with correct records and labelling.

Solve mixed scenario questions combining leak-check intervals, CO2e conversion, and fault diagnosis.

Review all previously missed questions and restate the underlying rule or principle for each.

Rehearse the full workflow from job receipt to refrigerant recovery and documentation.