Condensing Unit Acceptance Test & Pre-Delivery Inspection for Cold Room Exporter
Factory pre-delivery inspection of condensing unit reduces on-site commissioning failure rate and after-sales complaint for cold room export contractors. Standard PDI checklist includes pressure leak test, electrical continuity, phase sequence test, fan rotation check, safety switch action, oil level and controller function. Nitrogen leak test at 30 bar holding for 24 hours is mandatory; pressure drop less than 0.5 bar is qualified before charging refrigerant for running test. Running test records suction pressure, discharge pressure, current, oil temperature, fan operation and alarm trigger response under simulated load condition. Xiteliduo condensing unit HS 84186120 issues PDI report, test curve and wiring diagram together with shipment for overseas customer clearance and commissioning. Parallel rack condensing unit is tested compressor by compressor at factory; single faulty compressor will not be covered up by other running units during group test. Low temperature blast freezer condensing unit undergoes extended pull-down simulation test to verify low pressure stability and hot gas defrost function. Packaging for sea freight includes anti-rust oil, desiccant bag, sealed wiring terminal cover and wooden fumigated box to avoid salt and moisture damage. Condensing unit for Middle East project adds extra high-temperature aging test in factory, simulating 45℃ ambient continuous operation for 8 hours. Refrigeration exporter retains PDI record copy; the document serves as basis for troubleshooting if abnormal operation appears after container arrival.
FAQ
- What is the standard nitrogen leak test pressure and holding time for condensing unit? 30 bar nitrogen, hold 24 hours; pressure drop ≤0.5 bar is acceptable.
- What items are covered in condensing unit factory running test? Pressure, motor current, oil temperature, fan performance and safety alarm response.
- How to perform factory test for parallel rack condensing unit? Start and verify each compressor separately one by one.
- What special simulation test is required for blast freezer condensing unit? Simulated pull-down test and hot gas defrost function verification.
- What protective packaging preparation is needed for sea freight condensing unit? Anti-rust treatment, desiccant, sealed terminals and fumigated wooden case.
- What extra aging test is arranged for Middle East condensing unit order? 8 hours continuous run under simulated 45℃ high ambient condition.
- What documents are delivered together with condensing unit shipment? PDI test report, performance data curve and complete wiring schematic.
- What is the benefit of strict factory PDI for cold room export business? Cut overseas site commissioning failure rate and reduce after-sales service cost.
