32
Maintenance
For the automatic bump test:
After the set bump test concentration is
reached:
— The display containing the current gas
concentration changes with the display
»OK«.
— The bump test that was carried out is do-
cumented with the result and date in the
device memory.
● Close the test gas cylinder valve and re-
move the device from the calibration cr-
adle.
— If the concentration values have now fal-
len under the A1 alarm setpoints, the de-
vice returns to the measuring mode.
— If during the function test no alarm occurs
within 1 minute, the alarm mode is activa-
ted to indicate failure.
— The fault message » « appears and
» « is displayed instead of the
measured value on the faulty measuring
channel.
● In this case, repeat the function test with
gas or calibrate the device, page 35.
The function test with gas can also be carried
out automatically.
The "Bump Test Station" is required for this
function, refer to page 33.
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