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1.故障现象1台某型号旋挖钻机久置后启动,其康明斯柴油机刚刚运转便突然熄火,且仪表全部断电。将点火开关关闭后重新开启,仪表出现黑屏。2.故障排查(1)常规电路检查首先,检查电路保险,发现总保险已经熔断;其次,检查蓄电池电压在正常范围(24.6V),将蓄电池接线柱锈蚀清理干净;再次,更换总保险,开启点火开关,仪表恢复正常;最后,启动柴油机未能启动,同时仪表又出现黑屏,检查发现总保险又一次熔断。根据以上常规检
1. Symptom A certain type of rotary drilling rig long after the start, its Cummins diesel engine just suddenly turn off the flame, and the instrument all off. Turn the ignition switch off and on again, the instrument will appear black. 2. Troubleshooting (1) routine circuit inspection First of all, check the circuit insurance and found that the total insurance has blown; Second, check the battery voltage in the normal range (24.6V), the battery terminal rust clean; again, replace the total insurance, open Ignition switch, the instrument returned to normal; Finally, start the diesel engine failed to start, while the instrument appeared blank screen, check the total insurance once again blown. According to the above routine inspection