TESTO 570 Series Instruction Manual page 38

7 Using the product
2 Open connected valve(s) manually
and add refrigerant to the system
until the required value is reached.
Charging manually means the
user will need to control the
charge by opening and closing
valves with a manifold or other
valves.

Added refrigerant is displayed in g/kg
increments on the manifold/app.
38