Teledyne 3350 - Microprocessor based control room monitor for personnel safety - Manual (Page 35)

5-3
Alarm Oxygen Monitor Maintenance 5
Teledyne Analytical Instruments
ing. Read the section Cell Warranty Conditions, below, before replacing the
cell.
In addition, if the front panel Percent Oxygen Meter displays “00.0” when
the unit is plugged in, and the power switch is in the ON position, the sensor
needs to be replaced.
IMPORTANT: After replacing the Micro-Fuel Cell, the analyzer must be
recalibrated. See Calibration in chapter 4.
5.2.2 Ordering and Handling of Spare Sensors
To have a replacement cell available when it is needed, TET/AI recom-
mends that one spare cell be purchased shortly after the instrument is placed in
service, and each time the cell is replaced.
CAUTION: Do not stockpile cells. The warranty period starts on the day of
shipment. For best results, order a new spare cell when the
current spare is installed.
The spare cell should be carefully stored in an area that is not subject to
large variations in ambient temperature (75° F nominal), and in such a way as to
eliminate the possibility of incurring damage.
CAUTION: Do not disturb the integrity of the cell package until the cell is to
actually be used. If the cell package is punctured and air is permit-
ted to enter, cell-life will be compromised.
WARNING: The sensor used in the Model 3350 uses electrolytes which
contain substances that are extremely harmful if touched,
swallowed, or inhaled. Avoid contact with ANY fluid or
powder in or around the unit. What may appear to be plain
water could contain one of these toxic substances. In case
of eye contact, immediately flush eyes with water for at
least 15 minutes. Call physician. (See Appendix, Material
Safety Data Sheet—MSDS).
5.2.3 Removing the Micro-Fuel Cell
To remove a spent or damaged Micro-Fuel Cell:
1. Disconnect the Power Source from the Unit.
2. Remove the spent cell by unscrewing it, counterclockwise, from the
cell holder.
3. Dispose of the cell in a safe manner, and in accordance with local
laws.