During Operation - Dräger Pac 7000 Instrucciones De Uso

– The "Extended bump test" checks whether the gas
concentration has exceeded alarm threshold 1 (for oxygen,
a check confirms whether the concentration has fallen below
alarm threshold 1) and whether the gas concentration has
reached the set bump test concentration.
The bump test can be performed as follows:
– Manual bump test
– Bump test with X-dock maintenance station (see instructions
for use for the Dräger X-dock)
– Bump test with the Bump-Test Station (see quick guide to the
Bump-Test Station)
Prerequisites for the manual bump test:
– The gas detector is switched on.
– Appropriate test gas cylinder available, e.g. test gas cylinder
(order no. 68 11 130) with the following mixed gas ratios: 50
ppm CO, 15 ppm H2S, 2.5 Vol% CH4, 18 Vol% O2
To perform a manual bump test:
– Prepare a Dräger calibration 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.
– Connect the Dräger Pac 7000 and the test gas cylinder to the
calibration adapter.
– To enter the bump test mode, press the [+] 3 times within
3 seconds. The instrument beeps twice, quickly. The notice
icon [!] begins to flash.
Notice
The Dräger Bump-Test Station and the Dräger X-dock
maintenance station can be used to configure the device for
the automatic keyless start-up of the bump test. In this case
the manual start of the bump test is deactivated.
– To activate the bump test press [OK].
– Open the regulator valve to let test gas flow over the sensor.
– If gas concentration actuates the alarm thresholds A1 or A2
the corresponding alarm will occur.
– If the bump test could not be completed successfully, the
instrument switches to alarm mode to indicate a fault.
– The error icon [X] flashes; error code 240 is shown in the
display until the error is is acknowledged. "– – –" is shown
instead of the measured value and the [X] icon is displayed.
In this case the bump test can be repeated or the instrument
can be calibrated.
– If the bump test has been carried out successfully, the display
shows " OK ".
– The result of the bump test (passed or failed) will be stored
in the data logger (see chapter 6.1).
4.4

During operation

– If the allowable measurement range is exceeded or a
negative drift occurs, the following will appear in the display:
" " (too high concentration) or "
– After the measuring range of the EC measuring channels has
been exceeded temporarily (up to one hour), checking the
measuring channels is not necessary.
– Alarms are indicated as described in chapter 7.
– Continuous function of the instrument is indicated by the life
signal, which is a beep every 60 seconds, if configured (see
chapter 12.2).
– For measurements according to EN 45544 (CO, H
EN 50104 (O
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– To illuminate the display press [+].
4.5 Show peak concentration, TWA and STEL
– During measuring mode press [OK]. The peak concentration
and the peak concentration icon will be shown.
After 10 seconds the display will return to the measuring
screen, or if [OK] is pressed again the TWA concentration
and the TWA icon will be shown. After 10 seconds the
display will return to the measuring screen, or if [OK] is
pressed again the STEL concentration and the STEL icon
will be shown. After 10 seconds the display will return to the
measuring screen, or if [OK] is pressed again the number of
STEL periods and the STEL icon will be shown. After 10
seconds the display will return to the measuring screen.
4.6 Turning the instrument off
– Simultaneously hold both keys for approximately 2 seconds
until "3" appears in the display. Continue to hold both keys
until the countdown is finished. The alarm and LED will be
activated momentarily.
5 Calibration
– Dräger Pac 7000 is equipped with a calibration function. The
instrument will automatically return to the measuring screen
if no key is pressed in the calibration menu for 1 minute
(except in the span calibration menu which will wait for
10 minutes).
– The calibration is performed by qualified personnel after an
unsuccessful bump test or after specified calibration intervals
(see EU standard EN 50073).
– Recommended calibration interval for the O
sensors: 6 months. Calibration intervals for other gases: see
instructions for use for the respective DrägerSensors.
5.1 Enter the password
– Press the [+] key and keep it pressed for 3 seconds to call the
calibration menu. A double signal sound is audible.
– Press [+] again. If a password has been set, three zeros
"000" will appear on the display with the first zero flashing.
The password is entered one digit at a time. Change the
value of the flashing digit by pressing [+] and press [OK] to
accept the value. The next digit will now be flashing. Repeat
this process to select the next two values. After the last
acceptance using the [OK] button the password is complete.
Note: the default password is "001".
– If a correct password has been entered or no password has
been set, the display shows the icon for fresh air calibration
flashing.
– Press [OK] to enter the fresh air calibration function or press
[+] to switch over to the span calibration function. After this
the display shows the icon for span calibration flashing.
" (negative drift).
– Press [OK] to enter the span calibration function or press [+]
again to switch over to the measurement mode.
5.2 Fresh air calibration
– To enter the fresh air calibration function press [OK] after
entering the menu while the fresh air calibration icon flashes.
The fresh air calibration icon stops flashing and the indicated
value flashes.
– To finish the fresh air calibration press [OK], the fresh air
S) or
2
) the Life Signal must be switched on.
, H S and CO
2 2
calibration icon is removed from the display and the
instrument returns to the measuring mode.
– If the fresh air calibration failed a long single beep occurs.
"– – –" is shown instead of the measured value, and the [X]
icon and the fresh air calibration icon are lit. In this case the
fresh air calibration can be repeated or the instrument can be
calibrated.
5.3 Calibration
5.3.1 Automatically Calibration
– The Dräger Bump Test Station can be used to configure the
instrument to automatically start a calibration after an
unsuccessful bump test.
5.3.2 PC-based Calibration
– To perform calibration, connect the Pac 7000 to a PC using
the communication module or the E-Cal System. Calibration
can be done with the installed CC-Vision Basic PC software.
A calibration "due date" can be set using the operation timer
(in days).
5.3.3 Calibration without PC
– The device is also equipped with an onboard calibration
function. Prepare the calibration cylinder, connect the
cylinder to the calibration adapter, and connect the
calibration adapter to the instrument.
– Call up the menu to access the sensitivity calibration function.
The icon for the fresh air calibration will flash. Use the [+] key
to call up the sensitivity calibration function. The icon for the
sensitivity calibration will flash. Use the [OK] key to call up the
configured calibration concentration.
– It is possible to use this adjusted calibration concentration or
to change it to be in line with the concentration of the gas
cylinder.
– To change the adjusted calibration concentration press [+].
The first digit flashes. Change the value of the flashing digit
by pressing [+] and press [OK] to accept the value. The next
digit will now be flashing. Repeat this process to select the
next three values. After the last acceptance using the [OK]
button the calibration concentration is complete.
– Open the regulator valve to let calibration gas flow over the
sensor (flow: 0.5 l/min).
– Wait until the displayed measured value is stable (after at
least 120 seconds).
– Press [OK] to start the calibration. The concentration
flashes. When the indicated value shows a stable
concentration press [OK].
– If the calibration is successful a short double beep occurs
and the instrument returns to the measuring mode.
– If the calibration failed a long single beep occurs.
"– – –" is shown instead of the measured value, and the [X]
icon and the span calibration icon are lit. In this case the
calibration can be repeated.
Notice
To check the response times, supply t90 test gas to the
Pac 7000 via the calibration adapter. Check the results
against the specifications in the table starting on page 7 until
a value of 90 % of the maximum value is displayed.
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