28
Maintenance
Carrying Out the Function Test
with Gas (Bump Test)
Manual implementation without the
documentation of result in the device
memory
● Prepare a test gas cylinder, the volume
flow must be 0.5 L/min and the gas
concentration must be higher than the
alarm setpoint concentration to be tested.
Example test gas cylinder 68 11 130 =
mixed gas with 50 ppm CO, 15 ppm H
2
S,
2.5 vol. % CH
4
, 18 vol. % O
2
● Connect the test gas cylinder with the
calibration cradle (83 18 752).
● Vent the test gas into a fume cupboard or
into the open air (with a hose connected
to the second connector of the calibration
cradle).
● Switch on the device and insert it into the
calibration cradle – press downwards
until it engages.
● Open the test gas cylinder valve to let test
gas flow over the sensors.
● Wait until the device displays the test gas
concentration with a tolerance of ±20 %.
If the alarm setpoints are exceeded, the
device displays the gas concentration in
alternation with » A1 « or » A2 «
depending on the test gas concentration.
● Close the test gas cylinder valve and
remove the device from the calibration
cradle.
— If the concentration has now fallen under
the A1 alarm setpoint:
● Acknowledge the alarm.
● If the device does not display the test gas
concentration within a tolerance of
±20 %:
● Calibrating the device, refer to page 34.
ATTENTION:
Test gas must not be inhaled. Risk to
health!
Observe the hazard warnings of the
relevant Safety Data Sheets.
00523854_01_en.eps
0.5 L/min
0
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