Carry Out Manual Bump Test; Manual Implementation Without The Documentation Of Results In The Device; Memory - Drager X-am 5000 Technical Manual

Maintenance

Carry out manual bump test

Manual implementation without the documentation of results 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 S, 2.5 vol. % CH
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).
CAUTION
Health hazard! Do not inhale the test
gas. Risk to health! Observe the hazard
warnings of the relevant Safety Data
Sheets.
CSA requirement: carry out a bump test before use. It should be carried out in the
measuring range 25-50 % of the full scale value, whereby the displayed measured
value may deviate from the actual measured value by 0-20 %. Accuracy may be
corrected via calibration.

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.

Recommendation: Wait until the device displays the test gas concentration with
sufficient tolerance –
Ex: ±20% of the test gas concentration
1)
O : ±0.6 vol. %
2
TOX: ±20% of the test gas concentration
Wait al least until the alarm setpoint A1 or A2 is exceeded.

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 displays are outside of the above-mentioned ranges:
1) Upon application of the Dräger mixed gas (order no. 68 11 130) the displays should be within this
range.
40
, 18 vol. % O
4 2
WARNING
0
1)
1)
.
0.5 L/min