力士樂Rexroth繼電器HED8OA-2X/100K14KW

壓力(li)繼(ji)電器有(you)直動型(xing)及先(xian)導型(xing)，但其原理(li)都是一樣的(de)，依靠液(ye)體壓力(li)和彈簧(huang)力(li)達到(dao)力(li)平(ping)衡，使柱塞或杠桿產生一定(ding)的(de)位移，使微(wei)(wei)動開(kai)(kai)(kai)關(guan)接通或斷開(kai)(kai)(kai)。而(er)壓力(li)開(kai)(kai)(kai)關(guan)平(ping)時處在(zai)無液(ye)壓的(de)狀態，當壓力(li)上升到(dao)某個區域值或壓力(li)降到(dao)某個區域值時，內部微(wei)(wei)動開(kai)(kai)(kai)關(guan)接通或斷開(kai)(kai)(kai)，從(cong)而(er)發出電信號。

壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)繼電(dian)(dian)器(qi)和壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)開關(guan)(guan)工(gong)作(zuo)時(shi)都(dou)要(yao)按照實際(ji)工(gong)藝壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)來調(diao)整(zheng)(zheng)設定值(zhi)。但(dan)是壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)繼電(dian)(dian)器(qi)調(diao)整(zheng)(zheng)好(hao)(hao)(hao)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)值(zhi)，當液壓(ya)(ya)(ya)(ya)(ya)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)與調(diao)整(zheng)(zheng)好(hao)(hao)(hao)的(de)(de)彈簧(huang)力(li)(li)(li)(li)相等時(shi)則發(fa)出(chu)電(dian)(dian)信(xin)(xin)號。當壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)開關(guan)(guan)調(diao)整(zheng)(zheng)好(hao)(hao)(hao)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)值(zhi)，液壓(ya)(ya)(ya)(ya)(ya)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)高于(yu)調(diao)整(zheng)(zheng)好(hao)(hao)(hao)的(de)(de)彈簧(huang)力(li)(li)(li)(li)或低于(yu)調(diao)整(zheng)(zheng)好(hao)(hao)(hao)的(de)(de)彈簧(huang)力(li)(li)(li)(li)則發(fa)出(chu)電(dian)(dian)信(xin)(xin)號。用(yong)(yong)的(de)(de)空氣過濾減壓(ya)(ya)(ya)(ya)(ya)閥類似(si)于(yu)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)繼電(dian)(dian)器(qi)，用(yong)(yong)的(de)(de)電(dian)(dian)接點壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)表類似(si)于(yu)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)(li)開關(guan)(guan)。

　　空(kong)氣過濾減壓(ya)(ya)(ya)(ya)閥調壓(ya)(ya)(ya)(ya)時，只要(yao)(yao)(yao)在其可調范圍(wei)內，調到某個壓(ya)(ya)(ya)(ya)力(li)(li)(li)點則(ze)(ze)輸出(chu)壓(ya)(ya)(ya)(ya)力(li)(li)(li)就(jiu)是(shi)此(ci)壓(ya)(ya)(ya)(ya)力(li)(li)(li)值(zhi)，而壓(ya)(ya)(ya)(ya)力(li)(li)(li)繼(ji)電(dian)器也就(jiu)是(shi)在這個基礎上(shang)增(zeng)加微動(dong)開關，只要(yao)(yao)(yao)液壓(ya)(ya)(ya)(ya)等(deng)于(yu)(yu)這個壓(ya)(ya)(ya)(ya)力(li)(li)(li)則(ze)(ze)轉變為(wei)電(dian)信號輸出(chu)。對于(yu)(yu)電(dian)接點壓(ya)(ya)(ya)(ya)力(li)(li)(li)表(biao)，它可以設置高(gao)(gao)(gao)限(xian)(xian)和低限(xian)(xian)，只要(yao)(yao)(yao)液壓(ya)(ya)(ya)(ya)壓(ya)(ya)(ya)(ya)力(li)(li)(li)高(gao)(gao)(gao)于(yu)(yu)高(gao)(gao)(gao)限(xian)(xian)或低于(yu)(yu)低限(xian)(xian)則(ze)(ze)發出(chu)電(dian)信號，壓(ya)(ya)(ya)(ya)力(li)(li)(li)開關也是(shi)如此(ci)。因此(ci)，壓(ya)(ya)(ya)(ya)力(li)(li)(li)繼(ji)電(dian)器可用(yong)于(yu)(yu)負(fu)荷(he)(he)較小(xiao)的負(fu)載，若是(shi)大負(fu)荷(he)(he)負(fu)載，需要(yao)(yao)(yao)通過中間(jian)繼(ji)電(dian)器或接觸器來實現(xian)，而壓(ya)(ya)(ya)(ya)力(li)(li)(li)開關小(xiao)負(fu)荷(he)(he)及較大負(fu)荷(he)(he)的負(fu)載都可以直接使(shi)用(yong)。

力士樂Rexroth繼電器HED8OA-2X/100K14KW

繼電(dian)器是我們(men)生活中(zhong)常(chang)用的(de)一種控制(zhi)設備，通俗的(de)意義(yi)上來說(shuo)就是開(kai)關，在條件滿足的(de)情(qing)況下關閉(bi)或者(zhe)開(kai)啟(qi)。繼電(dian)器的(de)開(kai)關特性(xing)在很多的(de)控制(zhi)系(xi)統(tong)尤其是離散的(de)控制(zhi)系(xi)統(tong)中(zhong)得到廣泛的(de)應用。

壓力(li)(li)繼(ji)電(dian)器(qi)(qi)看著(zhu)很新穎，把(ba)它(ta)(ta)跟電(dian)接點(dian)壓力(li)(li)表聯(lian)系在一(yi)起，就很好理解，其實它(ta)(ta)們(men)之間大(da)同(tong)小異。跟常(chang)用的繼(ji)電(dian)器(qi)(qi)相比，只是(shi)使(shi)觸(chu)(chu)(chu)點(dian)動作(zuo)的驅動力(li)(li)不同(tong)，繼(ji)電(dian)器(qi)(qi)是(shi)以(yi)線圈得電(dian)使(shi)觸(chu)(chu)(chu)點(dian)工(gong)作(zuo)，而壓力(li)(li)繼(ji)電(dian)器(qi)(qi)是(shi)以(yi)壓力(li)(li)使(shi)觸(chu)(chu)(chu)點(dian)工(gong)作(zuo)。

壓力繼電器基本信息

壓(ya)(ya)(ya)力(li)繼電(dian)器有膜(mo)片(pian)式、柱塞式、彈簧(huang)管和波紋管式。雖(sui)然(ran)壓(ya)(ya)(ya)力(li)繼電(dian)器這四種結構(gou)有所不同，但(dan)都是(shi)利(li)用流體介(jie)質的壓(ya)(ya)(ya)力(li)來接(jie)通(tong)或斷開(kai)其觸點。因(yin)此在(zai)液壓(ya)(ya)(ya)系統中使用時要根據工藝具體設定壓(ya)(ya)(ya)力(li)值(zhi)，但(dan)是(shi)液壓(ya)(ya)(ya)系統壓(ya)(ya)(ya)力(li)達到設定值(zhi)則(ze)發出信號，使電(dian)器元件、執行機構(gou)、電(dian)機等動作。

壓力繼電器的作用

壓(ya)力(li)繼(ji)電(dian)器的作(zuo)用(yong)是，當液壓(ya)系統的壓(ya)力(li)升高到一定數(shu)值時(shi)，發出電(dian)信號(hao)，操縱電(dian)氣元(yuan)件（如電(dian)磁閥(fa)線(xian)圈(quan)或(huo)中間繼(ji)電(dian)器等），實(shi)現順序(xu)動(dong)作(zuo)或(huo)起安全保護作(zuo)用(yong)。

壓力繼(ji)電器(qi)在制冷系統中的(de)作用(yong)

在工業制(zhi)(zhi)(zhi)(zhi)冷(leng)中壓力繼(ji)(ji)電(dian)(dian)器(qi)(qi)是一(yi)(yi)(yi)種用(yong)(yong)壓力信(xin)(xin)號(hao)來控(kong)制(zhi)(zhi)(zhi)(zhi)的(de)電(dian)(dian)開關，常(chang)作為(wei)直(zhi)(zhi)接(jie)控(kong)制(zhi)(zhi)(zhi)(zhi)制(zhi)(zhi)(zhi)(zhi)冷(leng)壓縮(suo)機(ji)起(qi)停的(de)保護和(he)調節元件或控(kong)制(zhi)(zhi)(zhi)(zhi)某些電(dian)(dian)磁閥的(de)開閉。在制(zhi)(zhi)(zhi)(zhi)冷(leng)裝(zhuang)置中使用(yong)(yong)的(de)壓力繼(ji)(ji)電(dian)(dian)器(qi)(qi)，按其壓力控(kong)制(zhi)(zhi)(zhi)(zhi)范圍分為(wei)低壓繼(ji)(ji)電(dian)(dian)器(qi)(qi)和(he)高壓繼(ji)(ji)電(dian)(dian)器(qi)(qi)兩類(lei)。也(ye)有(you)將這兩種繼(ji)(ji)電(dian)(dian)器(qi)(qi)組裝(zhuang)在一(yi)(yi)(yi)個(ge)殼(ke)體(ti)內，共用(yong)(yong)一(yi)(yi)(yi)個(ge)電(dian)(dian)觸頭的(de)，構成(cheng)組合式(shi)高低壓繼(ji)(ji)電(dian)(dian)器(qi)(qi)。在制(zhi)(zhi)(zhi)(zhi)冷(leng)壓縮(suo)機(ji)上往(wang)(wang)往(wang)(wang)裝(zhuang)有(you)一(yi)(yi)(yi)個(ge)直(zhi)(zhi)接(jie)控(kong)制(zhi)(zhi)(zhi)(zhi)起(qi)動(dong)電(dian)(dian)路的(de)低壓繼(ji)(ji)電(dian)(dian)器(qi)(qi)，他以壓縮(suo)機(ji)吸氣壓力為(wei)動(dong)作信(xin)(xin)號(hao)，其功用(yong)(yong)為(wei)：

（1）當(dang)吸氣壓(ya)力(li)過低時，使(shi)壓(ya)縮機自動停車，防止空氣從管路或軸(zhou)封處漏入系統，起低壓(ya)保(bao)護作用(yong)。

（2）在小型制冷(leng)裝(zhuang)置中，除起低(di)(di)壓(ya)保(bao)護外，尚可(ke)使壓(ya)縮(suo)機(ji)按調(diao)定的吸氣(qi)壓(ya)力自動(dong)起停，以保(bao)持冷(leng)庫溫(wen)(wen)度穩定，起庫溫(wen)(wen)調(diao)節(jie)作用(yong)。在大、中型裝(zhuang)置中，因(yin)壓(ya)縮(suo)機(ji)起動(dong)電(dian)流(liu)較大，所以多不用(yong)低(di)(di)壓(ya)繼電(dian)器來自動(dong)起動(dong)壓(ya)縮(suo)機(ji)，因(yin)此(ci)它僅(jin)起低(di)(di)壓(ya)保(bao)護作用(yong)。

（3）除此(ci)之外(wai)，在一些(xie)活塞式(shi)壓(ya)縮機(ji)上(shang)還裝有低壓(ya)繼(ji)電(dian)器(qi)，這(zhe)些(xie)壓(ya)力(li)繼(ji)電(dian)器(qi)是(shi)(shi)(shi)設(she)備的(de)(de)中樞部分，是(shi)(shi)(shi)控制設(she)備正常運(yun)轉的(de)(de)心(xin)臟，也是(shi)(shi)(shi)設(she)備出現問題時(shi)的(de)(de)清道夫(fu)，所以挑(tiao)選(xuan)好的(de)(de)設(she)備首先得看(kan)他的(de)(de)壓(ya)力(li)繼(ji)電(dian)器(qi)是(shi)(shi)(shi)不是(shi)(shi)(shi)能(neng)夠承受設(she)備的(de)(de)摧殘，如(ru)果它的(de)(de)承受力(li)足夠承載(zai)設(she)備的(de)(de)負荷，那就(jiu)是(shi)(shi)(shi)一臺好的(de)(de)壓(ya)力(li)繼(ji)電(dian)器(qi)。所以大(da)家在挑(tiao)選(xuan)壓(ya)力(li)繼(ji)電(dian)器(qi)時(shi)一定要(yao)購買品牌正規的(de)(de)產品。

R901342024 HM20-2X/100-C-K35

R901342025 HM20-2X/100-H-K35

R901342026 HM20-2X/250-C-K35  

R901342027 HM20-2X/250-H-K35   

R901342029 HM20-2X/315-C-K35   

R901342030 HM20-2X/315-H-K35  

R901342033 HM20-2X/400-C-K35

R901342034 HM20-2X/50-C-K35

R901381345 HM20-2X/160-C-K35

R901425475 HEDE10-3X/400/1/-GI-K35-0   

R901425476 HEDE10-3X/600/1/-GI-K35-0   

HM12-1X/250

HM12-1X/315

HM12-1X/400

HM13-1X/315

HM17-1X/315-C/V0/0  

HM17-1X/050-C/V0/0

HM17-1X/050-H/V0/0

HM17-1X/100-C/V0/0  

HM17-1X/100-F/V0/0

HM17-1X/100-H/V0/0  

HM17-1X/200-F/V0/0

HM17-1X/200-H/V0/0

HM17-1X/250-C/V0/0  

HM17-1X/250-F/V0/0

HM17-1X/250-H/V0/0  

HM17-1X/315-F/V0/0

HM17-1X/315-H/V0/0

HM17-1X/400-F/V0/0

HM17-1X/400-H/V0/0

HM17-1X/450-C/V0/0  

HM17-1X/450-F/V0/0

HM17-1X/450-H/V0/0

HM17-1X/600-C/V0/0

HM17-1X/600-F/V0/0

HM17-1X/600-H/V0/0

HM20-1X/100-C-K35  

HM20-1X/100-H-K35  

HM20-1X/250-H-K35  

HM20-1X/400-C-K35  

HM20-1X/400-H-K35  

HM20-1X/400-H-K35    

HM20-2X/050-H-K35  

HM20-2X/160-H-K35

HM20-2X/315-F-C13-0,5    

HM20-2X/400-H-K35

HM20-2X/630-C-K35

HM20-2X/630-H-K35  

R901102706 HED8OA-2X/100K14  

R901091138 HED8OP-2X/350K14AS

R901094159 HED8OA-2X/100K14KW  

R901095551 HED8OA-2X/100K14KS    

R901099789 HED8OH-2X/200K14/V       

R901099808 HED8OH-2X/200K14

R901101640 HED8OH-2X/350K14

R901101698 HED8OA-2X/50K14

R901102349 HED8OH-2X/50K14   

R901102360 HED8OH-2X/100K14

R901102708 HED8OA-2X/200K14 

R901102710 HED8OA-2X/350K14  

R901102711 HED8OA-2X/100K14S

R901102712 HED8OH-2X/50K14S  

R901102716 HED8OA-2X/350K14KW   

R901102721 HED8OP-2X/200K14 

R901102747 HED8OP-2X/100K14 

R901106262 HED8OA-2X/100K14AS     

R901106448 HED8OA-2X/200K14KW 

R901106453 HED8OP-2X/350K14

R901106509 HED8OP-2X/100K14S       

R901107083 HED8OP-2X/50K14

R901107086 HED8OH-2X/50K14AS

R901107095 HED8OH-2X/350K14KW  

R901107122 HED8OH-2X/100K14KW 

R901107126 HED8OA-2X/200K14KS

R901107129 HED8OP-2X/350K14KW   

R901107313 HED8OH-2X/350K14A  

R901107369 HED8OH-2X/200K14KW 

R901107370 HED8OP-2X/100K14KW 

R901107394 HED8OH-2X/50K14KW     

R901107790 HED8OP-2X/100K14AS     

R901107914 HED8OP-2X/350K14KS 

R901107915 HED8OA-2X/630K14S    

R901108018 HED8OP-2X/200K14KW 

R901185727 HED5OH-3X/100K14  

壓(ya)(ya)力(li)(li)繼電(dian)(dian)器(qi)(qi)是液(ye)壓(ya)(ya)系(xi)統中當流體(ti)壓(ya)(ya)力(li)(li)達到(dao)預定值時(shi)，使電(dian)(dian)接點動作的(de)元件。壓(ya)(ya)力(li)(li)繼電(dian)(dian)器(qi)(qi)也可定義(yi)為將壓(ya)(ya)力(li)(li)轉換成電(dian)(dian)信號的(de)液(ye)壓(ya)(ya)元器(qi)(qi)件，客戶(hu)根據自身的(de)壓(ya)(ya)力(li)(li)設(she)計需要，通(tong)過調節(jie)壓(ya)(ya)力(li)(li)繼電(dian)(dian)器(qi)(qi)，實現在某(mou)一設(she)定的(de)壓(ya)(ya)力(li)(li)時(shi)，輸出一個電(dian)(dian)信號的(de)功能。

壓(ya)(ya)(ya)(ya)力(li)(li)繼(ji)(ji)電(dian)(dian)(dian)器(qi)是(shi)(shi)由(you)電(dian)(dian)(dian)信號控制(zhi)的(de)(de)電(dian)(dian)(dian)路開關。當壓(ya)(ya)(ya)(ya)縮機的(de)(de)排氣(qi)壓(ya)(ya)(ya)(ya)力(li)(li)超(chao)過調定(ding)值或吸(xi)氣(qi)壓(ya)(ya)(ya)(ya)力(li)(li)低(di)于調定(ding)值時，它能切斷(duan)電(dian)(dian)(dian)路，保護制(zhi)冷(leng)機安(an)全(quan)運行。在小型制(zhi)冷(leng)裝(zhuang)置(zhi)中(zhong)，一(yi)般使用高、低(di)壓(ya)(ya)(ya)(ya)為一(yi)體(ti)的(de)(de)壓(ya)(ya)(ya)(ya)力(li)(li)繼(ji)(ji)電(dian)(dian)(dian)器(qi)，常見有FP型壓(ya)(ya)(ya)(ya)力(li)(li)繼(ji)(ji)電(dian)(dian)(dian)器(qi)。它是(shi)(shi)由(you)高、低(di)壓(ya)(ya)(ya)(ya)波紋(wen)管、平衡彈簧、杠(gang)桿機構，幅差(cha)調節機構和電(dian)(dian)(dian)觸(chu)點等(deng)部分組成。當壓(ya)(ya)(ya)(ya)力(li)(li)變化(hua)時，波紋(wen)管產生伸縮變形(xing)，通過杠(gang)桿機構推動電(dian)(dian)(dian)觸(chu)頭(tou)切斷(duan)或接通電(dian)(dian)(dian)路。低(di)壓(ya)(ya)(ya)(ya)控制(zhi)元件的(de)(de)作用是(shi)(shi)控制(zhi)制(zhi)冷(leng)劑的(de)(de)蒸發(fa)壓(ya)(ya)(ya)(ya)力(li)(li)不要(yao)過低(di)以(yi)免制(zhi)冷(leng)機在不必要(yao)的(de)(de)低(di)溫下工作，浪費電(dian)(dian)(dian)能。

壓(ya)(ya)力繼電(dian)器上(shang)的(de)低(di)壓(ya)(ya)毛細(xi)管和壓(ya)(ya)縮(suo)機(ji)的(de)吸氣(qi)管連接在一(yi)起(qi)·當蒸(zheng)發壓(ya)(ya)力低(di)于調定值時(shi)，低(di)壓(ya)(ya)波紋(wen)管2由(you)(you)于彈簧3的(de)作用而(er)伸張，使低(di)壓(ya)(ya)頂針(zhen)4退進波紋(wen)管中；低(di)壓(ya)(ya)杠桿(gan)5由(you)(you)于彈簧6的(de)作用而(er)按送時(shi)針(zhen)方(fang)向轉(zhuan)動。當與(yu)杠桿(gan)連接的(de)觸(chu)頭(tou)板7向上(shang)運動時(shi)使觸(chu)頭(tou)19跳開(kai)，電(dian)路被切斷i·壓(ya)(ya)縮(suo)機(ji)停止工作；當蒸(zheng)發器內(nei)的(de)壓(ya)(ya)力逐步(bu)上(shang)升至二定值時(shi)i；低(di)壓(ya)(ya)波紋(wen)管被壓(ya)(ya)縮(suo)；頂針(zhen)由(you)(you)波紋(wen)管中伸·出，使整個杠桿(gan)按順時(shi)針(zhen)方(fang)向轉(zhuan)動，并使觸(chu)頭(tou)板下(xia)落到觸(chu)頭(tou)19上(shang)，接通(tong)電(dian)路，壓(ya)(ya)縮(suo)機(ji)重新運轉(zhuan)。

高(gao)壓(ya)(ya)(ya)控(kong)制元件(jian)的作(zuo)用(yong)與低(di)壓(ya)(ya)(ya)相同，：只是控(kong)制冷凝(ning)壓(ya)(ya)(ya)力(li)(li)不使(shi)(shi)(shi)過高(gao)，以免造(zao)成(cheng)事故。高(gao)壓(ya)(ya)(ya)接(jie)(jie)管(guan)9和(he)壓(ya)(ya)(ya)縮機排氣管(guan)連接(jie)(jie)。當(dang)排氣壓(ya)(ya)(ya)力(li)(li)高(gao)于調定(ding)值(zhi)時，高(gao)壓(ya)(ya)(ya)波(bo)紋管(guan)10被壓(ya)(ya)(ya)縮，高(gao)壓(ya)(ya)(ya)頂針(zhen)12推動(dong)(dong)(dong)杠(gang)桿13運動(dong)(dong)(dong)，使(shi)(shi)(shi)高(gao)壓(ya)(ya)(ya)斷(duan)路開關14上翹，頂開觸(chu)(chu)頭(tou)板，使(shi)(shi)(shi)電(dian)路切斷(duan)、壓(ya)(ya)(ya)縮機停止工作(zuo)。隨著制冷劑蒸汽在冷凝(ning)器中(zhong)不斷(duan)被冷凝(ning)，使(shi)(shi)(shi)排氣壓(ya)(ya)(ya)力(li)(li)不斷(duan)下，當(dang)降至一定(ding)值(zhi)時，高(gao)壓(ya)(ya)(ya)頂針(zhen)和(he)杠(gang)桿朝相反方向運動(dong)(dong)(dong)，使(shi)(shi)(shi)觸(chu)(chu)頭(tou)板和(he)觸(chu)(chu)頭(tou)接(jie)(jie)通(tong)，壓(ya)(ya)(ya)縮機恢復運轉。

壓力繼電器的調整方法：

（1）低(di)(di)壓(ya)(ya)(ya)的(de)調(diao)整(zheng)(zheng)(zheng)。根(gen)據需(xu)要的(de)蒸發溫度對應的(de)壓(ya)(ya)(ya)力值調(diao)節低(di)(di)壓(ya)(ya)(ya)調(diao)整(zheng)(zheng)(zheng)螺釘T：當需(xu)要較高的(de)蒸發溫度時，可(ke)用螺絲(si)刀逆時針(zhen)(zhen)方向旋轉(zhuan)低(di)(di)壓(ya)(ya)(ya)調(diao)整(zheng)(zheng)(zheng)螺釘T；若需(xu)要較低(di)(di)的(de)蒸發溫度時，可(ke)順(shun)時針(zhen)(zhen)方向旋轉(zhuan)調(diao)整(zheng)(zheng)(zheng)螺釘T。

（2）高壓(ya)的(de)調整(zheng)(zheng)。為(wei)保證制(zhi)冷(leng)(leng)(leng)裝置運行的(de)安全，壓(ya)力(li)繼電器大多數用(yong)子水(shui)冷(leng)(leng)(leng)式冷(leng)(leng)(leng)凝器的(de)制(zhi)冷(leng)(leng)(leng)機中(zhong)，其(qi)作用(yong)主要是防止冷(leng)(leng)(leng)卻水(shui)中(zhong)斷，或(huo)冷(leng)(leng)(leng)卻水(shui)流量不(bu)足(zu)時(shi)(shi)引起的(de)冷(leng)(leng)(leng)凝壓(ya)力(li)突然快(kuai)速升高，導致嚴重事故(gu)。高壓(ya)值一般(ban)調定(ding)在1Q～11公斤／厘(li)米z表r-匝，，31（用(yong)氟利(li)昂12制(zhi)冷(leng)(leng)(leng)劑）。調整(zheng)(zheng)時(shi)(shi)用(yong)螺絲刀將高壓(ya)調整(zheng)(zheng)螺釘M順時(shi)(shi)針(zhen)方向旋轉(zhuan)，壓(ya)力(li)值升高，逆時(shi)(shi)針(zhen)旋轉(zhuan)則(ze)壓(ya)力(li)值降低。

壓(ya)力(li)繼電器使用注意事項

（1）根(gen)據具體用(yong)途和系統壓(ya)力選(xuan)用(yong)適當(dang)結構形式的(de)壓(ya)力繼(ji)電器，為了保(bao)證壓(ya)力繼(ji)電器動作(zuo)靈敏，避(bi)免低壓(ya)系統選(xuan)用(yong)高壓(ya)壓(ya)力繼(ji)電器。

（2）應按照制(zhi)造廠的要求，正確(que)安裝壓力繼電器(qi)。

（3）按照所要(yao)求的電(dian)源形式和具體要(yao)求對壓力繼電(dian)器中的微動開關(guan)進行接線。

（4）壓力繼(ji)電器調整完畢后(hou)，應(ying)鎖定或固定其(qi)位置(zhi)．以免(mian)受振動后(hou)變動。

（5）壓(ya)力繼電(dian)器的泄(xie)油腔應直接接回油箱(xiang)，否(fou)則會使泄(xie)油口背壓(ya)過高，影響其靈(ling)敏度。

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