Precautions for gear oil pumps
May 29,2025
1. Installation
a. Before installation, check if the pump was damaged during transportation, for example, if the motor is damp, or if the dust caps at the pump's inlet and outlet are damaged, allowing dirt to enter the pump cavity, etc.
b. Before installing pipes, clean the inner wall of the pipes with clean water or steam. During installation, avoid having the pump bear the weight of the pipes, so as not to affect the pump's accuracy and lifespan.
c. The oil pump should be as close as possible to the oil sump; all connecting parts of the pipeline must not leak gas or liquid, otherwise, it will lead to the phenomenon of not being able to draw up liquid.
d. To prevent particles, debris, and other dirt from entering the pump, a metal filter screen should be installed at the suction inlet, with a filtering accuracy of 30 mesh/in, and the filtering area should be more than three times the cross-sectional area of the oil inlet pipe.
e. It is recommended to install vacuum gauges and pressure gauges on the inlet and outlet pipelines to monitor the pump's operating status.
f. When the oil sump is deep, the suction pipeline is long, or the medium viscosity is high, resulting in excessive vacuum, the oil inlet pipe can be thickened by one size. A foot valve should also be installed when the suction pipeline is long.
2. Pre-operation check
a. Are all fasteners of the pump secure?
b. Is the rotation of the driving shaft smooth and consistent?
c. Are the valves of the inlet and outlet pipes open?
d. Does the pump's rotation direction meet the requirements?
e. Before initial use, inject an appropriate amount of medium into the pump.
3. Maintenance during operation
a. Pay attention that the readings of the pump's pressure gauge and vacuum gauge should be within the technical specifications stipulated for the pump.
b. If the pump produces abnormal noise or the temperature rises too high during operation, stop the pump immediately for inspection.
c. Under normal circumstances, do not adjust the safety valve arbitrarily. If adjustment is necessary, use an instrument for calibration. Make the shut-off pressure of the safety valve for the pump
d. 1.5-2 times the rated pressure.
4. Pump shutdown
a. Cut off the power.
b. Close the inlet and outlet pipe valves.
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