vonLuger wrote:Squeeze this sides? They feeling hard as a rock
Yes I believe that is correct. Your pump is very new and stiff, so the parts will be much harder to press. I suggest trying to press the sides of the deflation block slowly but firmly. I think it's just to help reset the valve based on the OR manual instructions, so may not need to be pressed deeply.
Ultimately if nothing is working correctly and self help doesn't fix it always contact your own medical team for advice.
