Daily maintenance of dry screw pumps

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Daily 1. Oil level measurement: Too much or too little lubricant can damage gears and bearings. 2. Check whether there is sufficient cooling water. 3. Check the temperature of the grease seal and the front and rear end caps. If possible, a suitable thermometer or surface thermocouple can be used. 4. Check the suction and discharge pressures to ensure that the pump is operated in accordance with the specifications in the manual. 5. Check the motor load. Any abnormal phenomena that occur when the motor load increases should be recorded. ● 1. Check the tension of the V-belt every month. 2. Check the color of the lubricating oil. (If the oil turns black, it needs to be replaced.) 3. Check the oil level gauge. If the oil level drops sharply, the seals need to be checked. ● Check the flow and color of the cooling water on a quarterly basis. If there is anything wrong, clean the jacket and pipes through which the water flows. ● Once every six months, 1. Inspect the pump’s connection pipelines. 2. Replace the lubricating oil in the front gearbox. 3. Replace the grease in the bearing of the rear cover. ● 1. Check the mechanical seal annually (if one is installed). 2. Inspect the inner surfaces of the screw and the pump body. Disassemble the air intake pipe and check the surface coating of the screw and the pump body. 3. Remove the front cover and inspect the gears and bearings.