Oilers/Plant Tenders (HHC) Civil Service Practice Exam

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To achieve effective purification in a DeLaval Purifier, to what approximate temperature should the oil be heated?

140 degrees F
160 degrees F
180 degrees F
200 degrees F

The correct answer is: 160 degrees F

Heating the oil to around 160 degrees Fahrenheit is ideal for effective purification in a DeLaval Purifier. At this temperature, the viscosity of the oil decreases, allowing for better separation of impurities, such as water, solids, and other contaminants. This enhanced flow allows the unit to operate more efficiently and achieve a higher quality of purified oil. When oil is heated to this temperature, it also aids in reducing the surface tension between the oil and contaminants, making it easier for the purification process to take place. Temperatures significantly lower than 160 degrees Fahrenheit may not provide sufficient viscosity reduction for optimal performance, while excessively high temperatures can risk damaging the oil or equipment and affect the stability of the purified oil. Therefore, 160 degrees Fahrenheit represents an effective balance for achieving good purification results in this system.