如果線路出現問題不能正常工作，操作人員除了要熟悉操作知識和緊急應對方案外，還應具備線路檢查的基本方法。
1、建議第一時間內做好匯報工作，用電壓檔來檢測升降機時，需要接通電源，然后同樣要根據電路原理圖來對電壓進行測量，通過測出的電壓值來對故障點進行確定和分析。
Lift manufacturers do recommend reporting the first time, when used to detect the voltage profile lifts, power needs, and then also have to be measured according to the circuit diagram of the voltage, to determine the point of failure by measuring the voltage value and analysis.
2、談到用電阻檔檢查時，需要把電源斷開，然后通過電路原理圖進行測量，根據測量出的電阻值的大小，來對故障點進行分析，采用萬能表檢查液壓移動升降機故障時，可以用電阻檔和電壓檔進行檢測。
Lift manufacturers resistance profile when it comes to inspection, you need to power off, and then measured by the circuit diagram, according to the size of the measured resistance value, to analyze the fault, using the universal mobile
hydraulic lift table check fails, resistance profile and can be used to detect the voltage profile.
3、用短路的方法檢查時，可以以升降機的控制原理圖為依據，對可能出現的故障觸點、開關等進行短接。
Check the method when a short circuit, the control principle can lift Pictured basis for possible fault contacts, switches, etc. shorted.
4、提醒檢查線路時應具備現場維護人員，防止在檢查線路時，私自開合開關，造成安全事故。
Check the line should remind lift manufacturers have on-site maintenance personnel, to prevent the line at the time of inspection, unauthorized opening and closing of the switch, causing accidents.
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