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    德州億安通懋電梯職業培訓學校

    地址:山東省德州市經濟開發區金華街9號
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    電梯維修技術要點

           為保證電梯能夠安全地運行,在電梯上裝有很多安全部件。只有每個安全部件都在正常的情況下,電梯才能運行,否則電梯立即停止運行。電梯專用變頻器廠家表示,所謂安全回路,就是在電梯各安全部件都裝有一個安全開關,把所有的安全開關串聯,控制一只安全繼電器。當電梯處于停止狀態,所有信號不能登記,快車慢車均無法運行,首先懷疑是安全回路故障。應該到機房控制屏觀察安全繼電器的狀態。如果安全繼電器處于釋放狀態,則應判斷為安全回路故障。

     

    1、輸入電源的相序錯或有缺相引起相序繼電器動作。

    2、電梯長時間處于超負載運行或堵轉,引起熱繼電器動作。

    3、地坑斷繩開關動作。可能是限速器繩跳出或超長。

    4、電梯沖頂或沉底引起極限開關動作。

    5、可能限速器超速引起限速器開關動作。

    6、安全鉗動作。應查明原因。可能是限速器超速動作、限速器失油誤動作、地坑繩輪失油、地坑繩輪有異物卷入、安全契塊間隙太小等。

    7、如果各開關都正常,應檢查其觸點接觸是否良好,接線是否有松動等。

    8、安全窗被人頂起,引起安全窗開關動作。

    9、可能有的急停開關被人按下。

    10、目前較多電梯雖然安全回路正常,安全繼電器也吸合,但通常在安全繼電器上取一付常開觸點再送到微機進行檢測,如果安全繼電器本身接觸不良,也會引起安全回路故障的狀態。
     


    地址:山東省德州市經濟開發區金華街9號 招生熱線:400-109-9177/0534-8129875 電話:15965982333 孫校長 傳 真:0534-8129875
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