Dishwasher Drain Pump Quietly Losing Flow? NL-PMP-6 Pump Test Bench Records Q-H Curves on Six Stations

The drain pump is the heart of the dishwasher drain circuit. Incoming inspection often checks a single flow point and whether the pump turns — but the appliance sees high water levels, long drain hoses and low-voltage conditions. Flow decay, stalling or excess noise only shows up at the customer, where a repair costs far more than the pump itself.

What the NL-PMP-6 pump test bench measures

• Multi-point flow – head (Q-H) curve with automatic plotting
• Input power, current and efficiency at rated and low voltage
• Steady-state noise and vibration, with automatic stop on stall
• Pump body airtightness and holding pressure
• Adjustable pipe resistance to reproduce the real drain circuit

Applicable standards

GB/T 3216 (rotodynamic pumps – hydraulic performance acceptance tests), IEC 60436 (household dishwashers – performance), IEC 60335-2-5 (dishwashers – safety), GB/T 20290 series, plus customer-specific Q-H acceptance curves.

Stations and throughput

Six stations run in parallel with automatic loading, data acquisition and one-click report export — 24/7 operation for 100% inspection instead of sampling.

Manufacturer

Guangdong Endurance Electronic Equipment Co., Ltd. — a non-standard testing equipment manufacturer of pump test benches, dishwasher test equipment and level sensor life test machines.

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