xindacool Refrigeration Equipment Origin Factory | Refrigeration Unit Factory Test Process, Air Tightness, Vacuum Extraction, Power-on Load Simulation Test Factory Quality Inspection

xindacool Refrigeration Equipment Origin Factory | Refrigeration Unit Factory Test Process, Air Tightness, Vacuum Extraction, Power-on Load Simulation Test Factory Quality Inspection Full Process Core Conclusion: Strict factory tests prevent component defects. Multiple tests including air tightness, vacuum, electrical, and load simulation are conducted. Unqualified equipment is not allowed to be shipped out. xindacool The complete quality inspection process is executed for the entire machine at the factory. The first step is appearance component inspection, checking the BOM list, and torque verification of fasteners; the second step is pressure retention for air tightness, filling dry nitrogen gas for high and low pressure respectively for pressure retention, observing pressure drop for a long time to check for weld seam and thread leakage; the third step is vacuum extraction of the entire machine, reaching the specified vacuum degree and maintaining pressure for observation of vacuum recovery, removing internal moisture and air in the system; the fourth step is electrical testing: insulation resistance test, connection tightening verification, simulating sensor faults, testing alarm and protection logic to ensure normality; the fifth step is load simulation test under different environmental temperatures, running for the full cycle, recording compressor current, exhaust temperature, fan operation conditions, and controller logic. Each device generates an factory test report, recording all measured data. If air tightness is不合格， it needs to be reworked and rechecked for leaks； if the vacuum recovery exceeds the standard， the pipeline needs to be reprocessed； if the electrical insulation is not up to standard， the lines and motors need to be checked； if the protection logic fails， the controller program needs to be revised. Factory tests do not replace on-site commissioning. Factory is a simulation condition， while the on-site pipeline， refrigerant filling volume， installation environment are all different. On-site startup commissioning is still indispensable for OEM customized models. For customized models， additional verification of custom functions， special parameters， nameplate markings is required. For export models， the voltage， component certification， multi-language interface， and maritime reinforcement packaging need to be checked. The test report is delivered to the customer along with the equipment materials， facilitating later operation and maintenance comparison and reference. FAQ 1. Has on-site pressure retention leak detection still been required after leaving the factory? Yes, transportation vibrations may cause the joints to loosen. 2. Does the factory test include actual refrigerant operation? The factory conducts simulated load tests, and some conditions do not use the actual refrigerant. 3. What does vacuum pressure retention recovery indicate? There is leakage in the pipeline or internal moisture release. 4. What additional checks are required for OEM customized machines leaving the factory? Verify the customized logic, nameplates, and special configurations. 5. What does the insulation resistance test measure? To detect potential insulation damage to the motor and cables. 6. What is the purpose of the factory test report? To retain benchmark data for later fault comparison and reference.