Here’s a breakdown of our Precision Air Conditioner Assembly Process Inspection Checklist:
1. Rack Installation
We begin with structural alignment and surface quality:
- The base, top frame, and vertical posts are aligned on the same plane with a diagonal tolerance within 3mm.
- The rack’s surface must be uniform in color and free from scratches, dents, oil stains, or paint defects.
- All screws must be present and tightened; no missing, extra, or loose fasteners are allowed.
2. Major Component Installation
Consistency is key to performance and compliance:
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All key components and internal structures must match the BOM and certification inspection reports (e.g., 5C, energy-saving standards).
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Compressors, evaporators, fans, and trays are checked for correct model, installation position, torque force, and structural integrity.
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Anti-vibration pads, sealant applications, and clearance gaps are verified to meet assembly specifications.
3. Piping, Welding, and Component Orientation
Every pipeline and valve is carefully reviewed:
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Check valves, solenoids, and dryers must be oriented as per design drawings; sight glasses must be visible and correctly aligned.
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All welded connections must be full and free of defects, with nitrogen protection during welding and cleaning afterward.
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Copper pipes must be properly routed, with no interference and a minimum 10mm spacing between each other.
4. Airtight Components Installation
Critical pressure-sensitive devices are installed with precision:
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High- and low-pressure switches are positioned and secured according to the BOM and layout drawings.
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Differential pressure switches are installed with model verification and setting adjustments.
5. Pressure Holding and Airtightness Testing
Leak-proof performance is mandatory:
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Initial and secondary nitrogen pressure tests are conducted.
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Units must pass airtightness checks with no pressure drop, leakage, or water seepage.
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Failed units are re-welded and re-tested to ensure complete sealing.
6. Insulation Wrapping
Energy efficiency depends on proper insulation:
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Pipes must be fully wrapped with insulation sleeves, leaving no gaps, tears, or loose fittings.
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Insulation in the electrical control box and drain tray areas must comply with engineering standards.
7. Secondary Component Installation
Smaller parts are equally important:
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Temperature sensors are installed in the correct position and coated with thermal paste where needed.
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Heaters and humidifiers must match the BOM and be tightly secured, with sealed water connections and no deformation.
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Filters must be easily accessible, match the BOM, and be installed correctly.
8. Electrical Control Assembly
Our electrical quality checks cover layout, functionality, and safety:
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Electrical cabinets and all internal components must align with BOM specifications.
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Wiring is routed neatly, labeled clearly, and firmly connected.
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All devices must be operational, with function labels and no loose terminals.
9. Door Panels and Component Installation
External structure must be robust and user-friendly:
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Door panels must be insulated, smooth, and free from defects such as scratches or dents.
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Operation screens and door locks must function smoothly, and structural gaps must be ≤2mm.
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Ground wires (PE) must be correctly connected.
10. Labeling, Gas Filling, and Final Cleaning
Final quality assurance steps include:
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Filling indoor and outdoor units with nitrogen gas.
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Applying product labels, electrical safety warnings, and gas indicators accurately and firmly.
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Performing full internal and external cleaning—no oil, dust, or foreign objects allowed.
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Manually rotating fan blades to check for abnormal sounds or interference.
Conclusion: Excellence from the Inside Out
From framework assembly to airtightness testing and final cleaning, every step in our precision air conditioner production process reflects our commitment to craftsmanship, compliance, and customer satisfaction. Whether you’re looking for standard models or tailored solutions, Coolnet delivers air conditioning systems you can trust.
Contact the Coolnet team for expert consultation and tailored solutions.
Email: info@coolnetsystem.com
Tel/Whatsapp: +86- 18326091011
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