The trial operation of the hot oil pump shall meet the following requirements: ①The steering of the driver shall be the same as that of the hot oil pump and be used according to certain steering; ② The hot oil pump should be preheated before the test run and the temperature should be raised uniformly, The temperature rise should not exceed 50 ℃; the temperature difference between the surface of the pump body and the process pipe with working medium inlet should not be greater than 40 ℃; the connection device to eliminate the influence of temperature rise is provided and the bypass connection device is provided to provide the cooling water source; Should be no loose, the lubrication parts of the filling of lubricant specifications and quantity shall comply with the provisions of technical documents; ④ hot oil pump pre-lubrication requirements of the site should be pre-lubricated; ⑤ all instrumentation, safety devices should Sensitive, accurate and reliable; crank should be flexible, no abnormalities; ⑥ identify insulation gear pumps and coaxial pump steering. Hot oil pump operation should pay attention to the following points: ①prohibit water-free operation, do not adjust the suction port to reduce the displacement, prohibit the operation of the flow is too low; ② monitor the operation process, completely prevent packing box leakage, when changing the packing box With a new packing; ③ to ensure that mechanical seals have a full flush of water flow, water-cooled bearings prohibit the use of excessive water flow; ④ do not use too much lubricant; ⑤ check the recommended cycle. Establish operating records including operating hours, packing adjustments and replacements, adding lubricants and other maintenance measures and times. Centrifugal pump suction and discharge pressure, flow, input power, lotion and bearing temperature and vibration conditions should be measured regularly recorded. ⑥ hot oil pump host is relying on the atmospheric pressure will be low water pumping to a high place, while the atmospheric pressure can only support about 10.3m of water column, so the hot oil pump host 12 meters away from the water can not work. Hot oil pump should be used in accordance with a certain way and principle of use, to ensure that can play an important role in the use and value, can play a role in use. In the use of hot oil pump is used in accordance with the principles and methods, pay attention to some issues.