TESTO 557s - 8.2.2 Evacuation

8 Using the product
19
8.2.2 Evacuation
Via the Evacuation application, foreign gases and moisture can be removed
from the refrigeration circuit.
The testo 552i
is recommended for carrying out the measurement. The
measurement is also possible without the testo 552i, with testo
550s/testo 557s.
However, this is not advisable due to insufficient
accuracy.

The instrument is switched on and the measurement menu is
displayed.

Bluetooth
®
is enabled.

Hoses are connected.
1
Press [Menu/Enter].
2
Press [▲] / [▼] to select Measuring
Mode and press [Menu/Enter] to
confirm.
-
The Measuring Mode menu is
displayed.