8
Using the product
14
2
Take a photo of the QR code with a
mobile device of the testo Smart App
and press
[Menu/Enter]
to confirm.
-
The measurement menu is displayed.
8
Using the product
8.1
Preparing for measurement
8.1.1
Operating the valve positioners
With respect to the refrigerant flow path, the digital manifold behaves just like a
conventional four-way manifold: The passages are opened by opening the
valves. The applied pressure is measured with the valves closed and the valves
opened.
-
Open the valve: Turn valve positioner counterclockwise.
-
Close the valve: Turn valve positioner clockwise.
WARNING
Valve positioner tightened too tightly.
•
Damage to the PTFE seal (1).
•
Mechanical deformation of the valve
piston (2) leading to the PTFE seal (1)
falling out.
•
Damage to the thread of the threaded
spindle (3) and the valve screw (4).
Broken valve knob (5).
Only tighten the valve positioner hand-tight.
Do not use any tools to tighten the valve
positioners.
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