Hypertherm HD4070 Rev.8 - Manual (Page 109)

2-TORCH INSTALLATION
3B-22 HD4070 Instruction Manual
7
Fill the Power Supply with Coolant
4070.40A
Check that the drain valve is closed. 1
Add coolant to the power supply until
the sight gauge indicates full. 2
Replace the filler cap. 3
Caution
Use Hypertherm coolant (028872) to reduce the risk of damage from
freezing and to prevent long-term corrosion.