14
compromise intrinsic safety. The lithium
battery used in the ToxiPro may only be
removed or replaced in an atmosphere
that is known to be free of combustible
gas.
To replace the battery:
1. Turn the ToxiPro off. If the ToxiPro is in
Always On Mode, see section 2.7.1 for
further instructions.
Note : Failure to turn the ToxiPro off prior
to battery removal may cause loss of data
in the ToxiPro’s datalogger.
2. Remove the two screws from the back of
the ToxiPro. One is located under the
clip. The other is located near the bottom
of the instrument.
3. Remove the front housing. The main
board will stay attached to the rear
instrument housing. The battery is
located directly above the display.
CAUTION
The IRDA module is
located on the main board directly above
the battery and below the LED alarm light.
Take special care not to damage it or bend
the IrDA connection pins during
replacement of the battery. If the pins are
inadvertently bent during battery
replacement, gently return the IRDA
module to a 45-degree angle relative to the
main board
pointing away
from the battery.
4. Remove
the
old lithium battery.
If necessary, use a
small screwdriver
to gently pry the
battery out.
Figure 4.1: Interior view with battery and
sensor removed.
5. Install the new battery. Be sure to align
the polarity of the battery in accordance
with the diagram on the face of the battery
compartment.
Use only Duracell
Ultra #CR2, Energizer #1CR2 (EL1CR2),
Sanyo #CR2 or Panasonic #CR2 in the
ToxiPro.
6. Once the new battery is installed, the
instrument will automatically restart with
the hours digits blinking.
The next five steps describe
programming the time and date.
7. Press and release the MODE button to
advance the setting by one. Hold the
MODE button down to scroll rapidly.
Afternoon and evening hours are
differentiated by a dot below the colon on
the display.
10 a.m
.
10 p.m
.
Once the appropriate hour setting is
shown, wait 5 seconds and the minutes
setting will start to blink.
8. Adjust the minutes
setting with the MODE
button, then wait 5
seconds and the
months setting will be
shown.
9. Adjust the months
setting with the MODE
button, then wait 5
seconds and the days
setting will be shown.
10. Adjust the days setting
with the MODE button,
then wait 5 seconds
and the year setting
will be shown in two
digit format.
11. Enter the last two digits
of the year with the
MODE button, then
wait 5 seconds and the
instrument will continue
to the normal start up
sequence as discussed in section 2.1.
12. Replace the front cover plate.
13. Reinstall the screws that were removed in
step 1.
14. The ToxiPro must be calibrated following
replacement of the battery. Once the
sensor has stabilized, calibrate the
detector. For ToxiPro O2 units, perform
the Fresh Air/Zero Calibration as
described in section 3.3. For ToxiPro
units, perform both the Fresh Air/Zero
calibration (section 3.3) and the Span
calibration (section 3.5).
4.2 Replacing
sensors
Removal or
replacement of the lithium battery or
sensor in potentially combustible
atmospheres may compromise intrinsic
safety. The lithium battery or sensor used
in the ToxiPro may only be removed or
replaced in an atmosphere that is known
to be free of combustible gas.
The sensor in the ToxiPro may require
periodic replacement. To replace the sensor:
