Motor failures typically occur later in life due to wear and tear, however some warranty claims are beginning to make this an early life failure if users inappropriately load or use the machine.
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 and gold being the maximum.
Resetting thermal-override; specified to at least 1,300 wash cycles
Repairable motor; load sensor; specified to at least 1,800 cycles
Brushless motor; specified to at least 2,300 wash cycles
Brushless motor to be used.
Motor to be specified to last at least 2,300 wash cycles
Ask for clear evidence of requirements listed, e.g.: technical specifications, drawings, photographs; test data (ideally from an independent test house), quality control data.
* Motor to be tested on 10 randomly selected production machines without failure or reduced performance in 100% of cases. To be tested for the full number of test cycles specified, on a 40 degree cotton wash cycle, with a mixed clothing load of 50% of the maximum and to encompass the highest spin speed. Details of the actual test method is to be declared.
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).
Thermal Override Auto Reset Switch
This should already be present under safety requirements for appliances and hence should not add cost.
Numerous types of AC and DC motors are available, with various components. The motor is the single most expensive electro-mechanical item on a washing machine and higher quality, with better brushes and windings for example, will add a few pounds to the overall cost.
A simulated test as described, although accelerated, will require a significant number of man hours, hence adding cost per unit.
The latest electronically controlled motors as used on some washing machines, while very reliable and long-lasting, will add considerable cost.