Test and Diagnostic Equipment for Automotive Air Conditioning Systems

Automotive air conditioning systems must cool reliably, be leak-free, and operate within the specified pressure and temperature ranges. For this reason, various testing procedures are available for maintenance, repair, and troubleshooting—ranging from leak testing of the refrigerant circuit to targeted leak detection and the testing of pressure switches and temperatures.

Autotestgeräte Leitenberger offers professional testing and diagnostic equipment for automotive air conditioning systems in passenger cars, commercial vehicles, and other vehicle applications. The product line includes solutions for air conditioning systems using R134a and R1234yf, as well as specialized testing equipment for the significantly higher pressure levels of R744 (CO₂).

Testing Air Conditioning Systems, Detecting Leaks, and Systematically Narrowing Down Faults

Depending on the fault pattern, different testing methods and devices are used.

With air conditioning leak detection devices, the prepared refrigerant circuit can be pressurized with a suitable test gas and checked for pressure loss. For subsequent leak detection, formier gas can be used in conjunction with an electronic leak detector.

Diagnostics also include testing low-, medium-, and high-pressure switches, as well as temperature and differential temperature measurements. Compatible quick-connect couplings and other accessories enable the testing equipment to be connected to the respective air conditioning system.

The Leitenberger product line includes, among other items:

• Leak detection devices for automotive air conditioning systems
• Test systems for R134a and R1234yf
• Testing equipment for R744/CO₂ air conditioning systems
• Forming gas leak detectors
• Testers for air conditioning pressure switches
• Quick-connect couplings and connection accessories
• Temperature and differential temperature measuring devices

The testing method to be used depends on the vehicle, refrigerant, fault symptoms, and the vehicle manufacturer’s specifications.