ANSI 250.4返回 Back
Test item 测试名称: Door is open and closed a prescribed number of times 钢门和金属附件的耐久性
Test info 测试内容:
1) Level C (250k cycles)
30 working days after the sample arrived at LAB
2) Level B (500k cycles)
50 working days after the sample arrived at LAB
3) Level A (1000k cycles)
70 working days after the sample arrived at LAB
Sample size 送样规格: 2pcs finished products
Others 其他信息:
1) Evidence shall be provided that The exit device, door closer and hinges used in testing shall confirm to ANSI/BHMA A156.1, 3 and 4. The device shall shall be set to close the door at an approximate rate of 15 cycles per minute.
Sample for reference 参考图片: 
Sample Report 报告样本：