Hangzhou Yeed Machinery Co., Ltd
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Main Products: bathtub forming machine, bathtub mould, bathtub making materials, bathtub trimming machine
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How to control the quality while commercial refrigerator installation?
Mr. Leo
March 16, 2026
How to control the quality while commercial refrigerator installation?
There is a quality control data sheet as follows,
You can follow this process to check the refrigerator quality while installation.
| Process Name | Technical Requirements | Self-Inspection | Mutual Inspection | Qualified | Inspector | Operator Signature |
| Assembly | All components are firmly fixed with appropriate clearances and neat appearance; feet are securely installed, and inner liner is positioned correctly. | |||||
| Door Installation | Qualified door body shall be installed without deformation, with good sealing, and clearances between doors meet requirements; hinges are firmly and properly installed; cross and vertical beams are in place without protrusion. | |||||
| Compressor & Condenser Installation | Compressor accessories must conform to the requirements of the corresponding machine, and all components are firmly installed; fixed securely, and limit sleeves and spring washers must not be missing for bolt-fastened parts. | |||||
| Pipe Connection | Each pipe insertion depth complies with process requirements; pipes must not be dead-bent, with a bending radius not less than R28 mm; pipes shall not collide, rub, cross, or wind with each other. | |||||
| Electrical Installation | Control panel is firmly installed with correct wiring and no looseness; all power cords shall not be too close to the outer shell, and connecting wires are laid out reasonably. | |||||
| Welding | Weld points are smooth and full, with no undercut, incomplete penetration, sand holes, or leakage allowed. | |||||
| Nitrogen Charge & Leak Test | The refrigeration system is charged with 1.6 MPa nitrogen, and no leakage is allowed at any weld point. | |||||
| Vacuum Pumping | Vacuum pumping time shall be no less than 30 minutes, and the system vacuum degree shall be below -1 Pa. | |||||
| Refrigerant Charging | Charge refrigerant according to the dosage specified in the process, with a charging accuracy of ±0.5g. Weld points are smooth and full without leakage. | |||||
| Electrical Performance | Grounding resistance ≤ 0.1 Ω (Actual measurement) Leakage current ≤ 3.5 mA (Actual measurement) Electric strength: 1800V/1s (Actual measurement) Insulation resistance ≥ 50 MΩ (Actual measurement) | |||||
| Leakage Inspection | Refrigerant leakage ≤ 0.5g/year (Actual measurement) | |||||
| Refrigeration Performance | Standard requirements: Ambient temperature 38℃ Test time: 1 hour Temperature standard: 13℃ Refrigerating temperature / Freezing temperature | |||||
| Sanitation Cleaning | No foam, adhesive residue, or glue stains inside and outside the cabinet and at joints. | |||||
| Final Inspection | Execute in accordance with specified regulations. | |||||
| Packaging | Complete packaging with correct identification. | |||||
| Warehouse Entry Date | ||||||
| Note: | Mark "√" for qualified items in blank columns and "×" for defective items; for items marked "×" | fill in the return work order on the reverse side." |
For more commercial refrigerator information, please kindly contact us:
Leo Wang
Export manager
For commercial refrigerators, showcase display coolers, supermarket display freezers, Kitchen appliance
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