傳菜式升降機的工作原理是液壓泵產生出高壓液壓油并推動油缸活塞往復運動從而帶動傳菜式升降機轎廂上下運行。傳菜式升降機液壓油如果出現(xiàn)深褐色、乳雪白色、有異味的液壓油是變質油，不可以使用的。干凈的傳菜式升降機液壓油應該說是液壓系統(tǒng)的生命，液壓系統(tǒng)中有很多精細部件，如果有固體雜質入侵會造成油道堵塞等，危及液壓系統(tǒng)的安全運行。
Chuan Cuisine lift pump works by generating a high-pressure hydraulic oil and push the cylinder piston reciprocates so as to drive the car to run up and down the lift pass dishes. Chuan dishes elevators hydraulic oil if there is a dark brown, milk white snow, the smell of deterioration of hydraulic oil is oil, it can not be used. Clean dishes lift pass hydraulic oil should be said that the life of the hydraulic system, hydraulic system, there are many fine parts, if there is solid impurities invasion will cause the oil duct blockage, endangering the safe operation of the hydraulic system.

傳菜式升降機液壓油在油泵、油缸內流動摩擦必然產生一定熱量，同時油箱內的高溫也會向周圍空氣散發(fā)熱量。液壓系統(tǒng)是傳菜式升降機的心臟，液壓油是液壓系統(tǒng)的血液。
Chuan dishes elevators hydraulic oil pump, the fuel tank flow friction inevitably produce some heat, while the high temperature inside the tank will dissipate heat to the surrounding air. Hydraulic lift system is the transfer of cuisine in the heart of the hydraulic oil is the blood of the hydraulic system.

傳菜式升降機液壓油的理想工作溫度是30～50℃，實際要求的工作溫度小于70℃。
Chuan dishes elevators hydraulic oil ideal operating temperature is 30 ~ 50 ℃, the actual work required temperature is less than 70 ℃.