XJJY-20KN门窗角强度测试仪常见故障及保养：

1、每次试验完毕，应切断电源。

2、试验机未喷漆的外露零件的表面应经常涂些防锈油。

3、丝杠与螺母应经常注入新的润滑油脂，请在油杯处注油。

4、应定期断开电源，清除电板及电器上的灰尘和油污，并检查各接线端子是否松动。                                                                                                                                                                                                                                                                                                                                                                                                                                                                        

5、常见故障及处理方法（见下表）