I recently received my Chinese RedSail 100W CO2 laser, with RuiDa RDC6445G controller. It’s hooked up to a CW5000 chiller.
The day I unpacked it I tested it with the POWER and PULSE buttons and it needed 11% power to make a mark on wood. As I was doing my first material tests a couple of days later I noticed it needed a minimum of 14% power to make a mark. Now a week later I notice the minimum power required is 24%.
I’ve always used it with the chiller connected and running. I’ve never exceeded 24mA to the tube (which is around 65%).
Can someone suggest to me what might be going wrong? Am I doing something I shouldn’t be, or do I need to chase this up with the seller in China?