Water being the main source for this appliance there are many filters both inside and outside of the dishwasher to filter dirt and food particles. In this post I'm going to cover one important filter that is present outside the dishwasher.
If you find your dishwasher is not working or taking long time to complete then you may want to check this filter. Regular check once in 2 weeks and whenever your over-head tank is cleaned would avoid problem.
So far I've come across two type of filters and I'm posting pictures related to both of them here.
The filter I'm talking is present in the extreme end of the water inlet hose. The basic use of it is to filter out any sand/dust/rust particles coming from the over head tank.
If you find your dishwasher is not working or taking long time to complete then you may want to check this filter. Regular check once in 2 weeks and whenever your over-head tank is cleaned would avoid problem.