The specification below provides the recommended improvements needed to improve product durability. They are ranked from bronze to gold based on the effectiveness of the change in improving durability, with bronze being the minimum.
Diode standard test; capacitor endurance test
Improved reliability of components can reduce early returns and improve brand reputation which, in turn, can lower business costs and increase long-term sales.
To calculate overall cost savings for your business, use the WRAP cost/benefit analysis tool (currently in draft form and available on request).
Negligible additional cost for a better quality component.
Good quality requires production experience, expertise and good quality control. Randomly selected products should be tested to confirm reliability.
Quality relies on good production expertise and quality.
These are precision components so must be made with precise dimensions. Good production quality control is also essential.
The reliability of high voltage magnetrons, diodes, capacitors and transformers can be assessed by testing against standards:
Diodes: Passing standard test EIAJ ED-4701/100 will ensure reliability.
Capacitors should meet all of the safety requirements of EN 61270-1 but the endurance test in section 5.13 is important for durability.
Transformers do not have a standard durability test but the above method can be used as an indication of reliability.
Thermistors should be tested according to the EN 60335-2-25 standard.
In addition: The fan motor should be run for 15 days uninterrupted. 72 hours later, it should be able to withstand an electrical strength test (as per IEC 60335 Part 2-24 Annex AA Household and similar electrical appliances).