定容下料器無加料命令時，擺動氣缸處在初始位置，此時下料口密封，其進料口敞開，處于進料狀態，當槽控箱發出加料命令時，擺動氣缸選擇90度，帶動芯軸和上下蓋板旋轉同樣的位置，這時上蓋板蓋住了進料口，解決了料箱中的料順勢流入，并只允許定容室中的物料順著下料口的打開而卸出。
不出料(liao)(liao)(liao)的(de)定容(rong)下(xia)料(liao)(liao)(liao)器(qi)的(de)維護(hu):檢查(cha)料(liao)(liao)(liao)箱中(zhong)是否(fou)有物料(liao)(liao)(liao)，如果沒(mei)有物料(liao)(liao)(liao)，通知給料(liao)(liao)(liao)車間(jian)添加物料(liao)(liao)(liao)；手(shou)動給料(liao)(liao)(liao)器(qi)應聽(ting)是否(fou)有流動的(de)聲音，如果沒(mei)有聲音，就會卡住(zhu)。應指(zhi)(zhi)示(shi)天車將(jiang)進料(liao)(liao)(liao)器(qi)吊出進料(liao)(liao)(liao)器(qi)，以(yi)清理料(liao)(liao)(liao)倉和錐形(xing)塞。如果有聲音，表示(shi)氣缸與連(lian)桿連(lian)接處的(de)銷(xiao)軸斷裂，應指(zhi)(zhi)示(shi)天車將(jiang)進料(liao)(liao)(liao)器(qi)吊出，更換銷(xiao)軸；少(shao)下(xia)料(liao)(liao)(liao)定容(rong)下(xia)料(liao)(liao)(liao)器(qi)的(de)維護(hu):檢查(cha)氣源壓力，要(yao)求在0.4mpa以(yi)上；查(cha)看料(liao)(liao)(liao)倉中(zhong)是否(fou)有足夠的(de)物料(liao)(liao)(liao)，料(liao)(liao)(liao)倉中(zhong)的(de)料(liao)(liao)(liao)位要(yao)高于定容(rong)下(xia)料(liao)(liao)(liao)器(qi)料(liao)(liao)(liao)斗的(de)料(liao)(liao)(liao)位。
氣(qi)缸運轉是(shi)(shi)否(fou)正常(chang)，潤滑是(shi)(shi)否(fou)良好；檢(jian)(jian)查(cha)定容下(xia)料器錐形塞與鋼瓶之間是(shi)(shi)否(fou)有雜(za)物；感覺檢(jian)(jian)查(cha)材料的(de)干燥(zao)程度是(shi)(shi)否(fou)符合要(yao)求。定容給(gei)料器泄漏(lou)的(de)檢(jian)(jian)查(cha)和(he)修理:檢(jian)(jian)查(cha)給(gei)料器油缸的(de)活(huo)塞密封(feng)是(shi)(shi)否(fou)損壞和(he)泄漏(lou)，損壞后更換(huan)；
根據活塞(sai)(sai)的壓力(li)位(wei)置，確定(ding)(ding)(ding)定(ding)(ding)(ding)容(rong)(rong)(rong)下料(liao)(liao)(liao)器(qi)(qi)是否卡死，如(ru)停車時應將(jiang)定(ding)(ding)(ding)容(rong)(rong)(rong)下料(liao)(liao)(liao)器(qi)(qi)提升到(dao)筒倉和錐塞(sai)(sai)進行清理(li)；如(ru)果檢多，則證明定(ding)(ding)(ding)容(rong)(rong)(rong)下料(liao)(liao)(liao)器(qi)(qi)錐塞(sai)(sai)損壞應更換(huan)定(ding)(ding)(ding)容(rong)(rong)(rong)下料(liao)(liao)(liao)器(qi)(qi)。更換(huan)固(gu)定(ding)(ding)(ding)容(rong)(rong)(rong)積(ji)定(ding)(ding)(ding)容(rong)(rong)(rong)下料(liao)(liao)(liao)器(qi)(qi)：更換(huan)維修步驟：關閉替換(huan)定(ding)(ding)(ding)容(rong)(rong)(rong)下料(liao)(liao)(liao)器(qi)(qi)的供(gong)氣球閥，取消定(ding)(ding)(ding)容(rong)(rong)(rong)下料(liao)(liao)(liao)器(qi)(qi)的供(gong)氣管壓力(li)；打開定(ding)(ding)(ding)容(rong)(rong)(rong)下料(liao)(liao)(liao)器(qi)(qi)的固(gu)定(ding)(ding)(ding)螺(luo)(luo)栓鉗，安(an)裝卸料(liao)(liao)(liao)螺(luo)(luo)栓；使(shi)用吊索(suo)，命令起重機(ji)降落；安(an)裝新的定(ding)(ding)(ding)容(rong)(rong)(rong)下料(liao)(liao)(liao)器(qi)(qi)。
; 雖然定(ding)容下料器的固定(ding)容量較為成熟(shu)，但日常(chang)維修(xiu)或需要做好，以免影響生產。
