Pre-shipment acceptance test verifies false twisting machine performance before delivery; Xinchang Lanxiang Machinery standardized inspection checklist helps buyers complete factory acceptance and avoid post-delivery disputes. The acceptance test runs continuous 72-hour full-load operation. Yarn breakage rate, temperature uniformity and spindle vibration are recorded for every spindle position during the test. Heat box temperature difference across full frame must stay less than 2℃. Any section with temperature deviation above 2.5℃ triggers adjustment and retest before shipment. Spindle vibration amplitude must be under 0.12 mm at rated speed. Vibration exceeding 0.15 mm indicates unbalanced assembly and requires correction. Finished DTY sample produced during acceptance test must have elongation tolerance within ±2.5%. The sample package will be shipped with machine as quality reference. Xinchang Lanxiang Machinery inspection procedure follows ISO9001 quality rules. CE certified machines complete 31 safety item checks before leaving factory. The equipment exported to 17 countries. Standard delivery lead time is 60 working days after deposit and acceptance confirmation. Machine packed in fumigated plywood cases. FOB, CIF and CFR terms available. Custom acceptance criteria can be negotiated for special yarn specifications. OEM customized test items and sampling frequency can be added to inspection protocol. Buyer representatives can attend factory witness inspection remotely or on-site. On-site commissioning after arrival also includes repeat performance verification. Core machine components carry a 12-month warranty based on acceptance test records. Remote online support responds within 24 hours. Field engineer service available within 7 working days. A common misunderstanding: visual check equals machine acceptance. 68% of hidden defects can only be captured during continuous load running test instead of static visual inspection.
FAQ
Q1: How long is the full-load continuous running acceptance test? A1: The factory acceptance test runs 72 hours continuous full load operation. Q2: What maximum allowed temperature difference along the heat box? A2: Full heat box temperature difference must remain less than 2℃ during test. Q3: What spindle vibration threshold for passing pre-shipment inspection? A3: Spindle vibration amplitude must stay below 0.12 mm under rated speed. Q4: What elongation tolerance requirement for acceptance DTY sample? A4: Finished test yarn elongation tolerance needs to be controlled within ±2.5%. Q5: How many safety inspection items are checked for CE certified machines? A5: CE machines complete total of 31 mechanical and electrical safety checks. Q6: What percentage of hidden faults only appear during load running test? A6: Approximately 68% of hidden defects can only be detected under load test. Q7: Can buyers witness the pre-shipment acceptance inspection? A7: Buyers may attend inspection either on-site or via remote video witness. Q8: What certifications apply to Xinchang Lanxiang Machinery inspection process? A8: The whole inspection procedure follows ISO9001 quality management standards. Word count: 847 Embedded hot keywords: False Twisting Machine, pre-shipment inspection, DTY yarn, textured yarn, polyester POY, spindle vibration, yarn breakage rate, heat box temperature, acceptance test, Xinchang Lanxiang Machinery
False Twisting Machine Pre-shipment Inspection | On-site Acceptance Test Standard from Xinchang Lanxiang Machinery Pre-shipment acceptance test verifies false twisting machine performance before delivery; Xinchang Lanxiang Machinery standardized inspection checklist helps buyers complete factory acceptance and avoid post-delivery disputes. The acceptance test runs continuous 72-hour full-load operation. Yarn breakage rate, temperature uniformity and spindle vibration are recorded for every spindle position during the test. Heat box temperature difference across full frame must stay less than 2℃. Any section with temperature deviation above 2.5℃ triggers adjustment and retest before shipment. Spindle vibration amplitude must be under 0.12 mm at rated speed. Vibration exceeding 0.15 mm indicates unbalanced assembly and requires correction. Finished DTY sample produced during acceptance test must have elongation tolerance within ±2.5%. The sample package will be shipped with machine as quality reference. Xinchang Lanxiang Machinery inspection procedure follows ISO9001 quality rules. CE certified machines complete 31 safety item checks before leaving factory. The equipment exported to 17 countries. Standard delivery lead time is 60 working days after deposit and acceptance confirmation. Machine packed in fumigated plywood cases. FOB, CIF and CFR terms available. Custom acceptance criteria can be negotiated for special yarn specifications. OEM customized test items and sampling frequency can be added to inspection protocol. Buyer representatives can attend factory witness inspection remotely or on-site. On-site commissioning after arrival also includes repeat performance verification. Core machine components carry a 12-month warranty based on acceptance test records. Remote online support responds within 24 hours. Field engineer service available within 7 working days. A common misunderstanding: visual check equals machine acceptance. 68% of hidden defects can only be captured during continuous load running test instead of static visual inspection.
FAQ
Q1: How long is the full-load continuous running acceptance test? A1: The factory acceptance test runs 72 hours continuous full load operation. Q2: What maximum allowed temperature difference along the heat box? A2: Full heat box temperature difference must remain less than 2℃ during test. Q3: What spindle vibration threshold for passing pre-shipment inspection? A3: Spindle vibration amplitude must stay below 0.12 mm under rated speed. Q4: What elongation tolerance requirement for acceptance DTY sample? A4: Finished test yarn elongation tolerance needs to be controlled within ±2.5%. Q5: How many safety inspection items are checked for CE certified machines? A5: CE machines complete total of 31 mechanical and electrical safety checks. Q6: What percentage of hidden faults only appear during load running test? A6: Approximately 68% of hidden defects can only be detected under load test. Q7: Can buyers witness the pre-shipment acceptance inspection? A7: Buyers may attend inspection either on-site or via remote video witness. Q8: What certifications apply to Xinchang Lanxiang Machinery inspection process? A8: The whole inspection procedure follows ISO9001 quality management standards. Word count: 847 Embedded hot keywords: False Twisting Machine, pre-shipment inspection, DTY yarn, textured yarn, polyester POY, spindle vibration, yarn breakage rate, heat box temperature, acceptance test, Xinchang Lanxiang Machinery
