Yes, you're right. The POV 152 in our compressor is alway open when it's wait for automatic start and last time we got a problem the compress gas from the high storage passing NRV 152 to the compressor and it's can't fast start up because the high pressure in closing loop it's must be open POV 102 before start up every time. But this time we can solve it's by we add NRV 141 after delivery from the coalescent filter and it's perfectly for us. And another problem the compressor don't change stage from I to II stage but it seems to be not according to reality because they install the PT 150 after NRV 150 but for now we change position before the NRV 150 and perfectly in it's self.