The compnay is insisting product holder for anual mentenence contract and getting money with an assurence that compnay will replace once time filter element and two time carbon of instument contains. after getting money compnay is giving a form duly filled and mentioning a name of service centres with telephone nos. as when requires no response is from the given no. when we contact compnay offic and discusse them the reppy comes the person who filled the contract form has left the service and we can help only against payment. this type of... read full review »