Several issues need to be considered during the use of peristaltic pumps to extend their lifespan. These issues include abnormal flow, leakage, mechanical noise, startup failure, and hose lifespan problems. Causes include pump tubing wear, improper installation, aging drive components, or incompatible operating conditions.
1. Unstable or abnormal flow is a common problem, possibly caused by aging pump tubing leading to decreased elasticity, roller wear causing uneven pressure, power supply voltage fluctuations, or changes in media viscosity. Solutions include regularly replacing the pump tubing (e.g., silicone tubing after approximately 500 hours), adjusting the roller clearance to 60%-80% of the hose diameter, and installing a voltage stabilizer to reduce fluctuations.
2. Liquid leakage often occurs at the pump tubing and pump head interface. Causes include damaged pump tubing, loose joints, or aging seals. Solutions include ensuring correct pump tubing installation, tightening joints with a torque wrench, and regularly replacing seals (e.g., fluororubber rings have a lifespan of approximately 2000 hours).
3. Abnormal mechanical operation, such as excessive noise or vibration, is often caused by worn bearings, twisted hoses, or unstable equipment placement. This can be improved by lubricating or replacing bearings, reinstalling the hose to ensure centering, reinforcing the base, or adding vibration damping pads.
4. Start-up and control system malfunctions, manifesting as inability to start or control failure, may be due to power supply problems, motor overload, or driver failure. Check the power connection, fuses, and motor status; restart the controller or upgrade the driver software if necessary.
5. Short hose lifespan is easily caused by media corrosion, excessive pressure, or excessive speed. Choose hoses with good chemical compatibility (such as Pharmed), adjust the pressure block to an appropriate level, reduce the speed, and install a filter to remove particulate matter.