I have a Prochem Steempro Powermax, with a 100psi pump approx 2 years old. I was quite happy with it until I purchased a new one (getting busy), same spec etc, but the pump pressure was significantly better. The pump on the old machine was has only been repaced in last 6 months, so why the difference.
I have even used the old wand and hose on the new machine to see if there are any blockages, but still pressurised as before, and have used the new wand and hose on the old machine but no improvement.
Any thoughts???
Dan