The following points should be noted when the residual oil pump improves the operating life:
1. When the residual oil pump starts, when there is no pressure at the outlet, do not speed up blindly to prevent premature damage of the shaft or bearing.
2. The outlet pressure measurement point of the residual oil pump should be set to stop the alarm. Otherwise, once the discharge pipe is blocked, the pump body is easily damaged.
3. When cleaning the pipetting, do not use the residual oil pump to transport the cleaning liquid. The internal parts should be removed and installed after the pipetting is finished, so as to avoid foreign matter in the pump.
4. The speed of the residual oil pump should be slow. Do not let the front and rear pressure rise sharply to avoid damaging the bearing or blocking the lubrication passage.
5. The melt filter behind the outlet of the residual oil pump should be replaced regularly. Do not operate at high pressure or even upper pressure limit for a long time.
6. In case of power failure or heat medium circulation interruption of more than 3Omin, the pump should be disassembled and reassembled to avoid damage to the pump due to poor lubrication of the melt due to solidification and cracking.
7. Regular replacement of residual oil pump bearings can save maintenance costs. When the wear of the inner surface of the shaft or bearing is found to be close to the thickness of the hardened layer, the shaft can be ground and used again, and only the bearing can be replaced, which can extend the life of the pump shaft by 8 to 10 years.