Dishwasher Tub Seams Weeping or Door Seal Micro-Leaking, Invisible After Drying? NL-DWT-4 Tub & Door Seal Air-Tightness Leak Tester Runs Four Stations (dishwasher test equipment)

The tub seams of a dishwasher, the sealing face of the door gasket and the connectors of the water circuit are the usual sources of weeping and leaks. After a wipe-down these micro-leaks are completely invisible to the eye; the problem turns up only when the assembled machine is run with water, and rework means stripping the whole unit down — a cost that multiplies fast. Turning sealing performance into a measurable number is the only dependable gate.

What the NL-DWT-4 tub and door seal leak tester measures

• Four stations charging, stabilising, holding and judging in parallel, an order of magnitude faster than manual water testing
• Differential-pressure decay measurement covering tub seam and door gasket micro-leaks
• Numerical leak-rate output that can be traced, compared and grouped by batch
• Automatic compensation for charge pressure, hold time and ambient temperature to avoid false judgement
• One-touch recipe switching for different tub volumes, covering door assemblies and connector sealing
• A constant-pressure supply module shared with our dishwasher test equipment lines, so pressure stability can be verified

Applicable standards

GB 4706.1 (household appliances – general safety), IEC 60335-2-5 (dishwashers – safety), IEC 60436 (electric dishwashers for household use – methods for measuring performance) and GB/T 20290; acceptance limits can be set to the customer's internal leak-rate specification.

Stations and throughput

Four stations in parallel, built for 24/7 operation. A single judgement drops from minutes of manual immersion or water testing to tens of seconds, so one bench covers the whole incoming and end-of-line gate on a production line.

Manufacturer

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

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