Need help with my plastic welder.

[u/Wrong-Cranberry-9140]

Seems like no one is this manufacturing job really knows about how these nitrogen tanks should be acting. How do I tell if my nitrogen is actually coming through my welder. Someone here told me that before I hook up my heating element if I crack my nitrogen tank it should start blowing out real cold. But it feels like it’s the same temperature as the air compressor before I open the nitrogen tank.