Dräger X-am 8000 Mode D'emploi page 54

en Maintenance
5.4.1 Carrying out bump tests with the
wizard
WARNING
Health hazard from test gas
Breathing in of test gas can be harmful to health or lead
to death.
► Do not inhale the test gas.
► Observe risks connected with the test gas, hazards
notes and safety advice (see for example safety
data sheets, instructions on the testing media).
WARNING
Incorrect alarm behaviour!
A closed gas path causes incorrect measured values.
This may cause alarms to be triggered incorrectly.
► Never close the outlet of the calibration adapter.
Dräger recommends a test gas concentration of
<60 %LEL for CatEx and IR sensors and a measuring
range of 0 % to 100 %LEL.
For bump tests with the wizard and the X-dock, the
results are saved in the device memory.
Requirements:
– A bump test can only be carried out if at least one
sensor has been configured for the bump test with
the Dräger CC-Vision PC software.
– The gas detector is switched on and warm-up phase
1 is complete.
– The thread port for the pump adapter and calibration
adapter must be clean.
– A suitable test gas cylinder is available, e.g. a test
gas cylinder (order number 68 11 130) with the
following mixed gas ratios: 50 ppm CO, 15 ppm
H S, 2,5 vol. % CH4, 18 vol. % O
2
Other test gas cylinder can be added upon request.
To perform a bump test:
1. Mount the calibration adapter to the gas detector.
2. Connect the hose to the test gas cylinder and the
3. If needed, connect a second hose (max. length:
4. Open the bump test (depending on the
2
5. Open the valve on the test gas cylinder, the volume
6. Select
7. The bump test is complete when all measuring
8. Close the valves on the test gas cylinder.
Make sure that both guide pins are in the correct
grooves.
inlet on the calibration adapter.
2 m) to the outlet on the calibration adapter to direct
the test gas to an exhaust or outside. Make sure that
these is sufficient ventilation in room or vehicles.
configuration).
a. Select > Maintenance > Bump test (if
configured using the Dräger CC-Vision PC
software).
b. > Log in
Enter and confirm the password.
Select Maintenance > Bump test.
flow must be 0.5 /min and the gas concentration
must be higher (lower with oxygen) than the alarm
threshold concentration that is to be tested.
to start the bump test.
 All measuring channels which are included in the
bump test flash, and all others are greyed out.
When a measuring channel successfully passes
the test, appears.
channels included in the test successfully passed or
failed the test.
!
®
X-am 8000