2. GOODMORNING PM, WHAT CAN I DO IF THE PUMP DELIVERS LESS WATER THAN DESIRED? Dear Client, this problem can be caused by different factors. Please find as follows a list divided in three macro categories, where for each type of problem we will give you a different resolution. Obviously these are only some of the most typical problems that can occur. Clearly, we have always to analyse your specific case. Get in contact with us for further info, PM S.r.l. staff will be pleased to assist you. STAY TUNED… The next problem that we are going to deal with will concern the case in which pump delivers less pressure than desired.