| Problem | Possible Causes | Recommended Solutions |
| Unstable or Inconsistent Flow / Surging | 1. Worn or fatigued tubing has lost its elasticity. 2. Incorrect tubing size for the pump head. 3. Blockage or kink in the inlet or outlet lines. 4. Improper roller adjustment (occlusion too loose). 5. Worn or dirty pump rollers. |
1. Replace the pump tubing. 2. Verify and install the correct tubing size as per the manufacturer’s specifications. 3. Inspect all lines for obstructions and straighten any kinks. 4. Adjust the occlusion according to the manual (if applicable). 5. Clean or replace the pump rollers/head. |
| No Flow | 1. Pump is not powered on or motor has failed. 2. Tubing has completely ruptured. 3. Major blockage in the fluid path. 4. Pump is running in the wrong direction. |
1. Check power supply and connections. Contact service if the motor is non-functional. 2. Replace the pump tubing immediately. 3. Disconnect tubing and clear the obstruction. 4. Reverse the pump’s direction of rotation. |
| Abnormal Noise or Vibration | 1. Worn or damaged rollers/bearings. 2. Tubing is misaligned or improperly loaded. 3. Debris is trapped inside the pump head. 4. Motor is failing. |
1. Inspect rollers for smooth rotation; replace the pump head if rollers are damaged. 2. Stop the pump and reload the tubing correctly. 3. Open the pump head, remove the tubing, and clean out any foreign material. 4. Contact technical support for motor service. |
| Premature Tubing Rupture | 1. Chemical incompatibility between the fluid and tubing material. 2. System pressure exceeds the tubing’s rating. 3. Pump speed is too high for the application/tubing. 4. Incorrect tubing size (wall too thick). 5. Sharp edges on rollers or track. |
1. Verify chemical compatibility and switch to a more resistant tubing material. 2. Reduce system backpressure or select tubing with a higher pressure rating. 3. Reduce the pump speed. For the same flow rate, use a larger ID tubing at a lower speed. 4. Ensure the correct wall thickness is being used. 5. Inspect the pump head for damage and replace if necessary. |
| Liquid Leakage | 1. Tubing has ruptured or developed a pinhole. 2. Fittings and connections are loose. |
1. Immediately stop the pump, safely contain the spill, and replace the tubing. 2. Check and tighten all fittings and hose clamps on the inlet and outlet lines. |
| Poor Analytical Peaks (Split, Tailing) | 1. Inherent flow pulsation from the pump. 2. Worn tubing is causing inconsistent delivery. 3. Worn rollers are causing uneven peristaltic motion. |
1. Use a pump head with more rollers. Install a pulsation dampener in the fluid line. 2. Replace the pump tubing as part of a regular maintenance schedule. 3. Inspect the roller assembly for wear and replace the pump head if needed. |
