First Commissioning; Identifying Alarms - Dräger X-am 5000 Notice D'utilisation

Standard device configuration:
Dräger X-am 5000
2)
Bump test mode Off
2)
Fresh air calibr. On
2)
Life sign On
2)
Switch off Blocked for A2
2)
LEL factor 4.4
(CH ) (4.4 vol. % corresponds to 100 % LEL)
4
2)
Averaging time 15 minutes for STEL
8 hours for TWA

First Commissioning

Before using the device for the first time, insert the batteries
supplied or a charged NiMH power pack T4 (order no.
83 18 704), refer to chapter "Replacing the Batteries". The
Dräger X-am 5000 is ready for operation.
Operation
Switching on the device
Press and hold the [OK] key for approx. 3 seconds until the
countdown » 3 . 2 . 1 « shown in the display has expired.
– All the display segments, including the visual, audible and vi-
bration alarms, are activated for a short time.
– The software version is displayed.
– The device performs a self test.
– The next sensor to be calibrated/adjusted is displayed, along
with the remaining days to the next calibration/adjustment,
e.g. » Ex %UEG CAL 20 «.
– The time until the bump test interval elapses is displayed in
days, e.g. » bt 123 «.
– All alarm setpoints A1 and A2 as well as »
3)
» « (STEL) for H S and CO are displayed in succes-
2
sion.
– During the running-in period of the sensors, the respective
display of the measured value flashes and the special
symbol » « (for warning) is displayed. No alarms are is-
sued during the running-in period of the sensors. For details
on accelerated warm-up, see the Technical Manual.
Press the [OK] key to cancel the display of the activation
sequence.
____________________________
2) Different settings can be selected to meet customer requirements on delivery.
The current setting can be checked and changed with the software
"Dräger CC-Vision".
3) Only when activated in the device configuration. Delivery status: not activated.
8
Switching off the device
Press and hold the [OK] key and the [ + ] key simultaneously
until the countdown » 3 . 2 . 1 « shown in the display has
elapsed.
– Before the device is switched off, the visual, audible and vi-
bration alarms are activated for a short time.
Before entering the workplace
Check and, if necessary, adjust the calibration before carrying
out safety-relevant measurements. A bump test must be per-
formed according to the national regulations.
Switch on the device. The current measured values are
shown in the display.
– Observe any warning »
The device can be operated normally. If the warning mes-
sage does not disappear automatically during operation,
the device must be serviced after the end of use.
The device is not ready to measure and requires mainte-
nance.
The presence of catalyst poisons in the measured gas (e.g.
volatile silicone, sulphur, heavy metal compounds or halogen-
ated hydrocarbons) can damage the Cat Ex sensor. If the
Cat Ex sensor cannot be calibrated to the target concentra-
tion anymore, the sensor must be replaced.
The display of the Cat Ex sensor may be incorrect in an oxy-
gen-poor atmosphere.
Electrical operating safety (Ex protection) is not guaranteed in
an oxygen-enriched atmosphere.
Check that the gas inlet opening on the device is not cov-
3) ered.
« (TWA) and
During operation
– During operation, the measured values for every measured
gas are displayed.
– If a measuring range is exceeded or a negative drift occurs,
the following displays are shown instead of the measured val-
ue display:
» « (concentration too high) or
» « (negative drift).
– Concentrations of combustible materials that are too high,
For O
Ex channel as »
measurement is below the pre-alarm threshold (only if measur-
ing range ≤100 % LEL, not for >100 % LEL (heat conduction)).
– In the event of an alarm, the corresponding displays, the vis-
After a measuring range has been exceeded, sensitivity to Ex
gases may be increased temporarily. This sensor effect lasts for
CAUTION
a maximum of 4 hours. Recalibration is not allowed during this
time.
After the measuring range of the TOX measuring channels has
been exceeded temporarily (up to one hour), checking the
measuring channels is not necessary.
If using a Cat Ex sensor in Dräger X-am 5000, a fresh-air cali-
« or fault messages » «. bration may be required if the zero point has changed by more
than 3 % LEL after an extreme impact load.

Identifying Alarms

An alarm is displayed visually, audibly and through vibration in a
specific pattern.
WARNING
Concentration pre-alarm A1
The alarm is indicated by an intermittent
alarm message:
Display » A1 « and measured value
alternating: not for O
The pre-alarm A1 is not self-latching and disappears when the
concentration has dropped below the alarm threshold A1.
In the case of A1, a single tone is audible and the alarm LED
flashes.
In the case of A2, a double tone is audible and the alarm LED
flashes twice.
Acknowledging the pre-alarm:
Concentration main alarm A2
The alarm is indicated by an intermittent
alarm message:
Display » A2 « and measured value alternating:
for O
may result in a lack of oxygen.
concentrations below 8 vol. % a fault is indicated for the
2
« instead of the measurement, if the
ual, audible and vibration alarms are activated – see Chapter
"Identifying Alarms".
!
2
Press the [OK] key, only the audible alarm and the vibration
alarm are switched off.
: A1 = lack of oxygen
2
A2 = excess oxygen