* Check that you are using the correct machine cycle, not the shortest cycle.
* For tea and coffee cups – ensure that any caked on stains/sediment has been loosened by a glass brush or similar.
* There could be insufficient water fill or wash pump pressure. Check mains pressure.
* This may be due to improper loading of dishes. Check that your large dishware or cutlery doesn’t block water spray arms. Follow proper loading techniques.
* You may not be using the correct amount of detergent. Ensure it is commercial grade and that you are using the correct dose.
* The spray arm may be jammed, please check to ensure free spinning. Wash spray arms need to be checked to ensure food or debris is not blocking jets, if blocked, remove, clean & replace. On replacement check that they spin freely.