Suction cup not working


Suction cup stopped working. Pump is working properly as if I connect the suction cup directly to the pump the suction works. It must be something with the valves. Does anybody now what is the purpose of the 3 valves in the pump box? Is there a way to solve this? Is there a way to purchase these valves? (I have the robot less than a year, It looks that it fail too early).



I am also interested to know where I can buy a replacement suction cup. I don’t think the one I have looks that robust and I cant afford an early fail.