Dräger X-am 2500 Gebrauchsanweisung Seite 24

Operation
For NiMH power pack T4 (type HBT 0000) / T4 HC (type HBT

0100): Replace entire power pack.
3. Insert the power pack into the instrument and tighten the screw,
the instrument switches on automatically.
4.9.2 Charge instrument with NiMH power pack T4 (type HBT
0000)/ T4 HC (type HBT 0100)
WARNING
!
Explosion hazard!
Do not charge underground or in explosion hazard areas!
The chargers are not designed in accordance with the
regulations for fire damp and explosion protection.
Charge NiMH power pack T4 (type HBT 0000) or T4 HC (type
HBT 0100) with the appropriate Dräger charger. Ambient
temperature during the charging process: 0 to +40 °C.
Even if the instrument is not used, Dräger recommends that you store
the instrument in the charger cradle!
Insert the switched off instrument into the charger.

Display LED on the charger:

Charge
Malfunction
Full
To conserve the lifetime of the batteries, a charge is only carried out in a
temperature range of 5 to 35 °C. When this temperature range is left, the
charging process 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 charge/discharge cycles. Never store the instrument for
extended periods without being connected to a power source (maximum
of 2 months) because the internal buffer battery will drain.
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4.9.3 Carry out manual bump test
NOTICE
i i
The automatic bump test with the Bump Test Station is
described in the Technical Handbook.
1. Prepare a test gas cylinder, the volume flow must be 0.5 l/min and
the gas concentration must be higher than the alarm threshold
concentration that is to be tested.
2. Connect the test gas cylinder with the calibration cradle (order
no. 83 18 752).
CAUTION
!
Never inhale the test gas. Health hazard!
Observe the hazard warnings of the relevant safety data sheets.
3. Switch on the instrument and insert it into the calibration cradle –
press downwards until it engages.
4. Open the test gas cylinder valve to let test gas flow over the sensors.
5. Wait until the instrument 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
If the alarm thresholds are exceeded, the instrument displays the
gas concentration in alternation with A1 or A2 depending on the
test gas concentration.
6. Close the test gas cylinder valve and remove the instrument from
the calibration cradle.
If the displays are outside of the above-mentioned ranges:
Have the instrument calibrated by the service personnel.

1) Upon application of the Dräger mixed gas (order no. 68 11 130) the displays should be
within this range.
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Dräger X-am 2500