Hoe we elke ijsmaker testen voordat we deze verpakken

Een stapsgewijze blik op koelmiddelhantering, Koelverificatie, Lekdetectie, corrective action and electrical safety testing

For an ice maker, Betrouwbare prestaties worden vastgesteld lang voordat het karton wordt afgesloten. The refrigeration circuit must be correctly charged and closed, the machine must produce ice under controlled conditions, every potential leakage point must be checked, and the electrical system must pass its required safety tests.

At Yumyth Cooling Appliances Co., Ltd., every ice maker completes 100% in-line testing before it is released for packaging. This process gives our OEM and ODM customers clearer production traceability and helps prevent avoidable refrigeration, performance and electrical issues from reaching the market.

1. Refrigerant Charging Under Controlled Production Conditions

The refrigeration system is charged with the specified amount of refrigerant at a dedicated workstation. Correct charging is essential: too little refrigerant can reduce cooling efficiency and slow ice production, while an incorrect charge can place unnecessary stress on the system. Operators follow the approved model specification and process requirements for each production batch.

2. Closing and Securing the Refrigeration Circuit

After charging is complete, the process connector is cut and the joint is sealed by brazing. This is a critical workmanship step because the closed joint must remain secure during transportation, installation and long-term operation. The connection is visually checked before the unit proceeds to the next stage.

3. 100 Percent Ice Making and Cooling Performance Verification

Every completed unit is connected and operated on the production line. We do not rely only on component inspection or sample testing. The actual machine must run and demonstrate its refrigeration and ice-making performance before it can move forward.

During this stage, the production team checks operating response, cooling behavior and ice production. Testing the finished machine as a complete system helps identify assembly or refrigeration issues that cannot always be detected by inspecting individual components alone.

4. Multi-Point Refrigerant Leak Detection

A refrigeration system may initially cool even when a very small leak is present. That is why operating performance and leak detection are treated as separate quality-control steps. After the circuit is closed, technicians inspect the relevant tubing, joints and refrigeration connections for signs of refrigerant leakage.

The checks shown below cover multiple positions inside the machine. Using more than one inspection point reduces the risk of overlooking a weak joint or connection. A unit that does not meet the requirement is isolated from normal production flow.

5. Recording Nonconformities for Traceability

When an abnormal result is identified, it is recorded rather than informally passed down the line. The production inspection record documents the detected issue and supports follow-up by quality and engineering personnel. These records also help the team review recurring defects by model, batch or process stage and take corrective action where needed.

6 On-Site Diagnosis and Corrective Repair

Units with an abnormal test result are held for diagnosis. An engineer checks the machine at the production site, identifies the cause and completes the necessary correction. The unit is not released simply because a repair has been made; it must return to the applicable inspection stage and pass the required test again.

7 Electrical Performance and Safety Testing

Refrigeration performance is only part of final product quality. Every unit also undergoes electrical testing before packaging. The test confirms that the machine operates within the defined electrical requirements and provides an objective pass or fail result for the production team.

A high-potential, or Hi-Pot, test is also used to verify electrical insulation strength and help identify insulation breakdown or unsafe leakage paths. The applicable settings and acceptance criteria are controlled according to the product and market requirements.

Only Tested Units Move to Packaging

Packaging is the final release point, not a substitute for inspection. An ice maker can enter the packaging stage only after the required in-line checks have been completed and the unit has passed refrigeration performance, leak detection and electrical safety testing. Units requiring correction are repaired, rechecked and released only after they meet the applicable requirements.

Voor importeurs, distributors and private-label appliance brands, this process provides more than a finished product. It supports consistent batch quality, clearer issue tracking and a more reliable basis for long-term OEM and ODM cooperation.

OEM and ODM Ice Maker Quality Support

Yumyth Cooling Appliances Co., Ltd. supports OEM and ODM projects for nugget ice makers, cube ice makers, slush machines and ice cream machines. Testing requirements, Inspectiegegevens, packaging standards and market-specific electrical requirements can be aligned during project development. Contact our team to discuss your product specification, target market and quality-control requirements.