Dräger X-am 5000 Notice D'utilisation page 10

To maintain the lifetime of the batteries, charging is temperature
controlled and only performed in a temperature range of 5 to
o
35 C. When this temperature range is left, the charging is
automatically interrupted and automatically continued after the
temperature range has been reached again. The charging time
is typically 4 hours. A new NiMH power pack reaches its full
capacity after three complete load/unload cycles. Never store
the device for extended periods (maximum 2 months) without
being connected to a power source, as this drains the internal
buffer battery.
Carrying out a manual the function test
with gas (Bump Test)
NOTICE
Refer to the Technical Handbook for a description of the auto-
matic function test using the bump test station.
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.
Connect the test gas cylinder to the calibration cradle
(order no. 83 18 752).
CAUTION
Test gas must not be inhaled. Risk to health!
Observe the hazard warnings of the relevant safety data
sheets.
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
sufficient tolerance:
1)
Ex: ±20 %
1)
O : ±0.6 vol. %
2
1)
TOX: ±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 displays are outside of the above-mentioned ranges:
Have the device calibrated by the service personnel.
Calibration
Calibration may not be possible due to device and channel
errors.
____________
1) Upon application of the Dräger mixed gas (order no. 68 11 130) the displays
should be within this range.
10
Carrying out the fresh air calibration
Calibrate the device to fresh air, free of measured gases or
other interfering gases. During the fresh air calibration, the zero
point of all the sensors (with the exception of the DrägerSensor
XXS O and XXS CO ) is set to 0. For the DrägerSensor
2 2
XXS O the display is set to 20.9 vol. % and for the
2
DrägerSensor XXS CO to 0.03 vol. %.
2
Switch on the device.
Press the [ + ] key 3 times, the symbol for fresh air
calibration » « appears.
Press the [OK] key to start the fresh air calibration function.
– The measured values flash.
When the measured values are stable:
Press the [OK] key to perform the calibration.
– The display containing the current gas concentration chang-
es with the display » OK «.
Press the [OK] key to exit the calibration function or wait for
approx. 5 seconds.
If a fault has occurred during the fresh air calibration:
– The fault message » « appears and »
for the respective sensor instead of the measured value.
In this case, repeat the fresh air calibration. If necessary, have
the sensor replaced by qualified personnel.
Calibrating the sensitivity for an individual
measuring channel
– The span calibration can be carried out specifically for indi-
vidual sensors.
– During the span calibration, the sensitivity of the selected
sensor is set to the value of the used test gas.
– Use a standard test gas.
Allowed test gas concentration:
Ex: 40 to 100 %LEL
O 10 to 25 vol. %
2
CO: 20 to 999 ppm
H S: 5 to 99 ppm
2
Test gas concentration of other gases: see Instructions for
Use for the respective DrägerSensors.
Connect the test gas cylinder with the calibration cradle.
Vent the test gas leaving the adapter into a fume cupboard or
into the open air (with a hose connected to the second con-
nector of the calibration cradle).
Test gas must not be inhaled. Risk to health!
Observe the hazard warnings of the relevant safety data
sheets.
Switch on the device and insert it into the calibration cradle.
Press the [ + ] key and keep it depressed for 5 seconds to
call the calibration menu, enter the password (password on
delivery = 001).
Use the [ + ] key to select the single gas calibration function.
The symbol for span calibration »
Press the [OK] key to start the channel selection.
– The display flashes the gas of the first measuring channel,
e.g. » Ex - %LEL «.
Press the [OK] key to start the calibration function of this
measuring channel, or use the [ + ] key to select another
measuring channel (O
– The calibration gas concentration is displayed.
Press the [OK] key to confirm the calibration gas concentra-
tion or use the [ + ] key to change the calibration gas concen-
tration and complete the process by pressing the [OK] key.
« is displayed
– The measurement value flashes.
Open the test gas cylinder valve to let gas flow over the sen-
sor with a volume flow of 0.5 L/min.
– The displayed, flashing measurement value changes to the
value according to the supplied test gas.
When the measurement value displayed is stable (after at
least 120 seconds):
Press the [OK] key to perform the calibration.
– The display containing the current gas concentration chang-
es with the display » OK «.
Press the [OK] key or wait about 5 seconds in order to com-
plete the calibration/adjustment of this measuring channel.
– The next measuring channel may appear for calibration.
– After the calibration of the last measuring channel, the device
changes to the measuring mode.
Close the test gas cylinder valve and remove the device from
the calibration cradle.
If a fault occurred during the span calibration:
– The fault message »
played for the respective sensor instead of the measured val-
ue.
In this case, repeat the calibration.
If necessary, replace the sensor.
CAUTION
« flashes.
- vol. %, H S - ppm or CO - ppm, etc.).
2 2
« appears and » « is dis-