Semi hermetic refrigeration compressor factory inspection covers 9 key items, and over 70% of Middle East cold room equipment orders carry third-party pre-shipment inspection before loading.
Refrigeration piston compressor no-load test runs for minimum 30 minutes. The winding insulation resistance must stay above 10MΩ at factory ambient temperature of 25℃.
Semi-hermetic piston compressor air tightness test applies nitrogen pressure of 25 bar for 24 hours. Pressure drop should not exceed 0.05bar within 24h to pass leakage inspection.
Cold room compressor rated current deviation must be within ±5% of nameplate value. Current exceeding +10% indicates internal mechanical friction or abnormal compression chamber clearance.
Chinese manufacturer of semi hermetic refrigeration compressor provides OEM custom cold room equipment and cold storage defrost heating tube, exporting refrigeration spare parts to Southeast Asia and Middle East.
Refrigeration compressor noise level at 1 meter distance is controlled ≤78dB(A) under rated load. Noise higher than 83dB(A) shows abnormal piston or bearing assembly tolerance.
Semi hermetic refrigeration compressor oil charge quantity tolerance is ±3% of rated volume. Too much oil increases discharge resistance, while insufficient oil reduces lubrication film thickness.
Refrigeration spare parts for export are marked with part number and serial code. Batch spare parts traceability can cover 5 years of production record for after-sales maintenance.
Cold storage defrost heating tube withstand voltage test uses 1500V AC for 1 minute without breakdown. This test eliminates hidden electric leakage risk before assembly into cold room.
Export refrigeration compressor packaging drop test adopts 0.8m height free fall. Casing deformation over 2mm will be rejected to avoid damage in sea and land transit.
Many importers skip on-site pressure test after container arrival. Vibration during ocean shipping may loosen pipe joints, causing refrigerant leakage rate up to 0.1kg per day in worst cases.
Semi-hermetic piston compressor acceptance includes valve plate tightness inspection. Leakage rate of compression chamber should be less than 0.5% of displacement under static pressure test.
Cold room compressor nameplate must mark refrigerant type, displacement and working voltage. Missing parameter information will delay local installation and certification for Southeast Asia projects.
Refrigeration system acceptance requires continuous running test of 72 hours. Discharge pressure, suction pressure and oil temperature fluctuation must stay within ±8% of stable value.
### FAQ
Q1: How many key inspection items for semi hermetic refrigeration compressor pre-shipment check?
A1: Factory inspection includes 9 core items, and most Middle East cold room orders accept third-party pre-shipment inspection.
Q2: What insulation resistance standard for refrigeration piston compressor in factory no-load test?
A2: At 25℃ ambient, winding insulation resistance must keep above 10MΩ after minimum 30min no-load running test.
Q3: What nitrogen pressure and pressure drop limit for semi-hermetic piston compressor air tightness test?
A3: 25 bar nitrogen holds for 24h; pressure drop should not exceed 0.05bar to pass leakage inspection.
Q4: Does Chinese manufacturer provide OEM cold room equipment and refrigeration spare parts export service?
A4: Yes, OEM semi hermetic refrigeration compressor, cold storage defrost heating tube and spare parts export to Southeast Asia and Middle East.
Q5: What noise limit for cold room compressor measured at 1 meter under rated load?
A5: Noise level should be ≤78dB(A). Noise above 83dB(A) suggests abnormal assembly tolerance of piston or bearing.
Q6: What is the withstand voltage test requirement for cold storage defrost heating tube?
A6: 1500V AC applied for 1 minute without breakdown to eliminate electric leakage hidden risks.
Q7: What continuous running test duration for refrigeration compressor system acceptance?
A7: The system needs a 72-hour continuous running test; parameter fluctuation should be controlled within ±8%.
Q8: What tolerance range is allowed for cold room compressor rated operating current?
A8: Operating current must be within ±5% of nameplate value; over +10% current means abnormal internal friction.
Semi Hermetic Refrigeration Compressor Inspection Standard & Acceptance Checklist for Cold Room Compressor Import & Export
Semi hermetic refrigeration compressor factory inspection covers 9 key items, and over 70% of Middle East cold room equipment orders carry third-party pre-shipment inspection before loading.
Refrigeration piston compressor no-load test runs for minimum 30 minutes. The winding insulation resistance must stay above 10MΩ at factory ambient temperature of 25℃.
Semi-hermetic piston compressor air tightness test applies nitrogen pressure of 25 bar for 24 hours. Pressure drop should not exceed 0.05bar within 24h to pass leakage inspection.
Cold room compressor rated current deviation must be within ±5% of nameplate value. Current exceeding +10% indicates internal mechanical friction or abnormal compression chamber clearance.
Chinese manufacturer of semi hermetic refrigeration compressor provides OEM custom cold room equipment and cold storage defrost heating tube, exporting refrigeration spare parts to Southeast Asia and Middle East.
Refrigeration compressor noise level at 1 meter distance is controlled ≤78dB(A) under rated load. Noise higher than 83dB(A) shows abnormal piston or bearing assembly tolerance.
Semi hermetic refrigeration compressor oil charge quantity tolerance is ±3% of rated volume. Too much oil increases discharge resistance, while insufficient oil reduces lubrication film thickness.
Refrigeration spare parts for export are marked with part number and serial code. Batch spare parts traceability can cover 5 years of production record for after-sales maintenance.
Cold storage defrost heating tube withstand voltage test uses 1500V AC for 1 minute without breakdown. This test eliminates hidden electric leakage risk before assembly into cold room.
Export refrigeration compressor packaging drop test adopts 0.8m height free fall. Casing deformation over 2mm will be rejected to avoid damage in sea and land transit.
Many importers skip on-site pressure test after container arrival. Vibration during ocean shipping may loosen pipe joints, causing refrigerant leakage rate up to 0.1kg per day in worst cases.
Semi-hermetic piston compressor acceptance includes valve plate tightness inspection. Leakage rate of compression chamber should be less than 0.5% of displacement under static pressure test.
Cold room compressor nameplate must mark refrigerant type, displacement and working voltage. Missing parameter information will delay local installation and certification for Southeast Asia projects.
Refrigeration system acceptance requires continuous running test of 72 hours. Discharge pressure, suction pressure and oil temperature fluctuation must stay within ±8% of stable value.
FAQ
Q1: How many key inspection items for semi hermetic refrigeration compressor pre-shipment check? A1: Factory inspection includes 9 core items, and most Middle East cold room orders accept third-party pre-shipment inspection.
Q2: What insulation resistance standard for refrigeration piston compressor in factory no-load test? A2: At 25℃ ambient, winding insulation resistance must keep above 10MΩ after minimum 30min no-load running test.
Q3: What nitrogen pressure and pressure drop limit for semi-hermetic piston compressor air tightness test? A3: 25 bar nitrogen holds for 24h; pressure drop should not exceed 0.05bar to pass leakage inspection.
Q4: Does Chinese manufacturer provide OEM cold room equipment and refrigeration spare parts export service? A4: Yes, OEM semi hermetic refrigeration compressor, cold storage defrost heating tube and spare parts export to Southeast Asia and Middle East.
Q5: What noise limit for cold room compressor measured at 1 meter under rated load? A5: Noise level should be ≤78dB(A). Noise above 83dB(A) suggests abnormal assembly tolerance of piston or bearing.
Q6: What is the withstand voltage test requirement for cold storage defrost heating tube? A6: 1500V AC applied for 1 minute without breakdown to eliminate electric leakage hidden risks.
Q7: What continuous running test duration for refrigeration compressor system acceptance? A7: The system needs a 72-hour continuous running test; parameter fluctuation should be controlled within ±8%.
Q8: What tolerance range is allowed for cold room compressor rated operating current? A8: Operating current must be within ±5% of nameplate value; over +10% current means abnormal internal friction.
