Winston Engineering Case Study

Case Study 2 Title: Pump performing below expectation Findings & Observation: 1.  Pump  cannot achieve it duty point. Possible causes on the findings and observations: 1. Filter regulator under size 2. Air hose under size 3. Needle valve under size Solution and Conclusion: 1. Connect to 3/4" filter regulator achieve 80% of actual flow rate and pressure. 2. Connect to 3/4" filter and needle valve can only meet 30% of actual flow rate and pressure. 3. Connect  test bay  1" air hose direct to diaphragm Pump can meet the flow rate and pressure. Recommendations: 1. Up size the filter regulator from 3/4" to 1" 2. Remove the needle valve. The needle valve only have 6mm orifice size on air outlet. It restricted the air output. 3. Up size the air hose from 3/4" to 1" Pump install with 3/4' air hose Pump with 3/4" Filter regulator & needle valve Pump with 3/4" Filter r...

Case Study 1 Title: Pump leaking through mechanical seal Medium: Water with unknown chemical treatment Findings & Observation: Feedback on pump leaking due to the faulty of mechanical seal. Possible causes on the findings and observations: 1. Pump could be out of alignment, cavitation, and chemical corrosion to mechanical seal or incompatible elastomer, or foreign object entering seal stuffing box chamber. 2. Technician discovered that the impeller and back casing (with pin holes and sign of corrosion) damaged by chemical corrosion. Also found the impeller and back casing were having cavitation of damaged. 3. Pump bearing was malfunctioning due to mechanical seal leaking and water got into bearing causing bearing to fail. Meanwhile the pump shaft also damaged due to bearing malfunctioning and  unbalanced  impeller  (due to chemical corrosion or cavitation). Solution and Conclusion: 1. Replace mechanical seal, shaft, bearing, im...