51
5 Maintenance
Carry out the indication accuracy test as follows:
z
Insert connecting hose (E) into connection (A) and attach it to
the
EX-TEC PM 4
.
z
Screw the test gas canister onto connection (B). Pressure
gauge (C) indicates the pressure inside the test gas canister.
z
Switch on the
EX-TEC PM 4
.
z
Wait until the
EX-TEC PM 4
has finished warming up.
z
Press release button (D) to release the test gas. Keep the but
-
ton depressed.
z
Continue to keep release button (D) depressed until the value
displayed on the
EX-TEC PM 4
has stabilized. Then release
the button.
The value displayed on the
EX-TEC PM 4
must correspond
to the specified concentration of the test gas or fall with-
in the permissible tolerances (see appendix: Gas types).
If the display values fall outside the specified tolerances, the
EX-TEC PM 4
must be readjusted (see Section 5.3).
Enter the test results in the test protocol (see appendix).
