I Need A Wagner Paint Crew Service Manual 515010 Wagner Paint Crew Plus Is Not Building Pressure.?

Wagner Paint Crew Plus is not building pressure.? - i need a wagner paint crew service manual 515010

I Wagner Airless Paint Crew Plus. I have the first day and it worked like a charm to the Manual for the 4 bedrooms. The second day of use, I switched on flat roofs. I spent the teacher and then in the second quarter under the pressure. If Machian usually stops when the maximum pressure generated, leaving only the pressure runniing and never returned, even when washed with water only. I called support and they said, clean the ring on the valve. Is this really solve the problem?