求翻译：7、仪器经长期使用，自然磨损属正常现象，仪器在使用一年后，若发现电机有不正常的噪声、传动部分轴承磨损、皮带松动或出现裂纹、电控元件失效等故障，我单位提供优质的售后服务。是什么意思？

7, instruments with long-term use, wear a normal phenomenon, one year after instruments in use if found abnormal motor noise, drive bearing wear, belt loose or crack faults such as component failure, power control, my unit to provide quality service.