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 nished 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 specied tolerances, the
EX-TEC PM 4 must be readjusted (see Section 5.3).
Enter the test results in the test protocol (see appendix).
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