RO Output Dwindling and the Boost Pump Buzzing Until It Burns Out? NL-ROP-6 RO Boost Pump Flow-Pressure and Dry-Run Bench, Six Stations (pump test bench)

RO purifiers that drop from over a litre a minute to half within a year, with a pump that starts buzzing and cycling ever more often and occasionally burns out, are almost always reported as “slow water”. The service visit replaces the whole filter set, the flow is still slow, and the water quality gets the blame. The real cause is usually an eroded impeller, air ingress at the pump head that kills suction, membrane inlet pressure that never builds, or a low-pressure and dry-run cut-out that trips at the wrong point. Flow, pressure, suction and protection are tangled together inside the machine, and an incoming check that stops at a spin test sees no decay at all.

What the NL-ROP-6 RO boost pump flow-pressure and dry-run bench measures

• Six stations in parallel, flow-pressure curves swept automatically to quantify the decay from impeller erosion and air ingress at the pump head (sharing the flow and pressure metering module of our pump test bench)
• Inlet pressure, membrane inlet pressure and outlet flow captured together, showing whether “slow water” sits in the pump or in the membrane
• Dry-run and low-water protection verification: the inlet is run dry and the trip time and cut-off pressure are logged, screening out late or missing protection
• Tens of thousands of intermittent start-stop cycles, tracking cut-in/cut-out hysteresis, starting current peak and rising noise
• Pump head pressure-hold and suction testing to judge air ingress and internal leakage, with vacuum recorded alongside every pump performance test
• Current, power, noise and vibration capture, with barcode and batch binding and raw data exported per unit

Applicable standards

GB 4706.1 (household appliances – general safety), GB/T 30307 (household and similar drinking water treatment units), GB 34914 (reverse-osmosis purifiers – minimum allowable values of water efficiency), GB/T 3216 (rotodynamic pumps – hydraulic performance acceptance tests) and IEC 60335-2-41 (pumps for liquids); criteria can follow the customer’s standard and the unit’s recovery and salt-rejection requirements.

Stations and throughput

Six stations running 24/7 turn the days an operator would spend holding a measuring cup, timing the flow and then stripping the pump into a single sweep, with flow decay and protection trips rechecked round by round — so incoming pumps and end-of-line machines can both be sampled batch by batch, stopping slow output, pump noise and burnout before shipment.

Manufacturer

Guangdong Endurance Electronic Equipment Co., Ltd. — a non-standard testing equipment manufacturer of RO boost pump flow-pressure and dry-run benches, pump test bench and pump performance test systems, level sensor life test machines, dishwasher test equipment and washing machine test equipment.

Keywords: pump test bench, pump performance test, level sensor life test, dishwasher test equipment, washing machine test equipment.