4 Operation
14
4 Operation
4.1 Connecting
Always use refrigerant hoses that are specifically intended for
evacuations.
1 - Remove sealing caps.
- Connect the testo 552 to the circuit.
4.2 Switching instrument on and off
1
- Press .
The instrument switches on or off.
The instrument displays oooooo
when ambient pressure is applied to
the connections. The display
indicates the applied pressure value
once the applied pressure is within
the measuring range. (0 to 20,000
microns).
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