TESTO 570 Series - Page 33

7 Using the product
33
5
Connect 2 x testo 115i or 2 x fixed cable probes and third
temperature probe to the compressor outlet.
6
Set refrigerant.
6.1
Press the key [▼] (Rxx) (refrigerant number according to ISO 817).

The refrigerant menu opens and the
current refrigerant is highlighted.
6.2
Setting the refrigerant: Press [▲] or
[▼] to select the refrigerant and
press [Menu/Enter] to confirm.

The newly set refrigerant is displayed in the refrigerant list.
7
Press the [▲] (P=O) key for 2 seconds to carry out zeroing.

Zeroing takes place.
8
Pressurize the measuring instrument.

The measurement starts automatically.

The measurement result is displayed.
9
Press [Menu/Enter] to return to the main menu.