Air conditioning leak testers & leak detectors

Professional testing equipment for leak testing and leak detection in vehicle air conditioning systems. The range includes testing systems for R134a, R1234yf and R744 (CO₂), solutions for pressure testing with nitrogen or forming gas, as well as electronic leak detectors. For precise and documentable air conditioning diagnostics in passenger cars, commercial vehicles, as well as electric and hybrid vehicles.

Frequently Asked Questions

Which testing device do I need for R134a, R1234yf or R744 (CO₂)?

The selection of the testing device is primarily based on the refrigerant used in the air conditioning system. Various leak testing systems are available for air conditioning systems using R134a and R1234yf. If air conditioning systems using R744 (CO₂) are also to be tested, a testing system designed for this purpose is required. The KLDS 05 is designed for R134a, R1234yf, and R744. The KLDS 06 is suitable for R134a and R1234yf and can be retrofitted for R744. Therefore, before making a selection, it should be determined which refrigerants are to be covered in the workshop.

What is the difference between leak testing and leak detection?

The leak test checks whether the closed air conditioning system maintains its test pressure for a specified period. A drop in pressure indicates a possible leak. Leak detection is then used to find the exact leaking point. For this purpose, for example, tracer gas can be introduced into the emptied system and escaping gas can be detected with an electronic leak detector. Leak testing and leak detection are therefore two sequential work steps.

When is nitrogen used, and when is forming gas used?

Nitrogen is suitable for pressure and leak testing an evacuated air conditioning system. This checks whether the introduced test pressure remains stable or if a pressure drop occurs. Tracer gas can additionally be used for targeted leak detection. If the gas escapes at a leak, it can be detected with a suitable electronic leak detector. Which test gas and test pressure may be used depends on the air conditioning system, the test equipment, and the respective manufacturer's specifications.

When do I need an electronic leak detector?

An electronic leak detector is particularly useful when a pressure loss has been detected during a leak test and the exact leak needs to be located. When using a suitable tracer gas, the leak detector senses escaping test gas, thereby assisting in locating leaks in air conditioning lines, connections, and other components. A leak detector is not strictly necessary for a simple pressure drop test. However, it is a useful addition for precisely locating a leak.

Which air conditioning testing devices generate a test report?

The leak testers of the SLD-01 series feature an integrated test report printer. This allows pressure tests to be documented and the results to be printed immediately after testing. The devices enable test times ranging from a few minutes to multi-hour long-term tests. The date and time are documented together with the test result. Such documentation is particularly useful when the test result needs to be recorded in a traceable manner for customers or stored for internal workshop processes.

What is the difference between KLDS 05, KLDS 06 and SLD 01?

KLDS 05 and KLDS 06 are mobile air conditioning leak testing systems mounted on trolleys. The KLDS 05 covers R134a, R1234yf and R744 (CO₂). The KLDS 06 is designed for R134a and R1234yf and can be retrofitted for R744 if required.The SLD 01, on the other hand, is a digital leak tester for R134a and R1234yf systems. It enables precise pressure monitoring over a defined test period and immediately generates a test report via the integrated printer.Which solution is better suited therefore depends primarily on the refrigerants to be tested and on whether automatic documentation of the test is required.