Dräger X-am 2500 Notice D'utilisation page 31

1. Switching off the instrument: Press and hold OK key and [+] key
simultaneously.
2. Loosen the screw on the power pack and remove the power pack.
Battery holder (order no. 83 22 237): Replace alkaline batteries or

NiMHy rechargeable batteries. Ensure correct polarity.
NiMH power pack T4 (Type HBT 0000) / T4 HC (Type HBT 0100):

replace complete 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! To reduce the risk of ignition of a flammable
or explosive atmosphere, strictly adhere to the following
warning statements:
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 packs T4 (type HBT 0000) or T4 HC
(type HBT 0100) with the appropriate Dräger charger.
Ambient temperature during charging: 0 to +40 °C.
Insert the switched off instrument into the charger module.

Display LED on the charger module:
Charge
Malfunction
Full
Dräger X-am 2500
To protect the battery charge only in the temperature range of 5 to 35 °C.
Outside this temperature range, 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.
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).
WARNING
!
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.
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.
Operation
29