Switch off times will increase if scale builds up in or around the steam pipe or if a gap develops between the lid / spout and body which releases steam.
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.
Test new design
Switching off requires the water to boil so that steam is forced down the steam pipe to the bimetallic strip. Heat causes the strip to “trip” the electric contacts to cut off power. Anything that hinders steam flow will delay switch off time.
Kettle testing as described for lids can also be used to ensure that kettle switch off times do not become too long in use.
The test used is fill / boil / empty with lid opening and closing and this is carried out for the required number of cycles. Descale as necessary during 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).
New design testing
Testing will identify fatal flaws. Independent kettle design assessment and durability testing can be obtained free of charge from some manufacturers of kettle controls if sales volume are sufficiently high.