6700 Portable Sampler User Manual - Isco

CAUTION
Desiccant may produce
irritating fumes when heated.
Observe the following
precautions:
Useaventedoveninawell
ventilated room.
Do not remain in the room
while recharging is taking
place.
Use the recommended
temperature.
There have been reports of
irritating fumes coming from
the desiccant during reactivation.
While our attempts to
duplicate the problem have
been unsuccessful, we still
urge you to use caution.
Material Safety Data Sheets
are provided in Appendix B.
Battery Warning
WARNING!
REPLACE INTERNAL
BATTERY BEFORE
17-OCT-97
Note
Isco recommends you replace
the battery every five years, as
soon as the battery warning
appears. To insure that the
replacement meets Isco’s
specifications, use only Isco
replacement batteries. (See
Appendix D, Replacement
Parts.)
6700 SAMPLERS
RECHARGING THE DESICCANT
The 6700 Samplers use a desiccant bag inside the controller case
to prevent moisture damage to its electronic components.
Follow the instructions in Opening the Controller Case on page
77 to open the controller. Remove the bag from the cardboard box
atthefrontofthecase(Figure 19).
How To Recharge The Desiccant
Do not put the cardboard box in the oven. You should recharge
the desiccant when the area marked “30” on the paper humidity
indicator turns pink.
Place a sheet of brown paper on a flat metal sheet. You can use a
brown grocery bag and a typical cookie sheet. Place only the bags
on the sheet. Do not stack the bags on top of each other or allow
them to touch. Place in a vented, circulating forced air, convection
oven in a well ventilated room. Allow two inches of air space
between the top of the bags and the next metal tray above the
bags. Keep the tray a minimum of 16 inches from heating element.
Heat the bags at a temperature of 240 to 250oF(116to 121oC) for 12 to 16 hours. At the end of the time period, the bags
should be immediately removed and placed in an air tight container
for cooling. The desiccant will be recharged to approximately
80 to 90% of its previous capacity. After repeated
recharging, the desiccant bag may require replacement.
Some bags will have the temperature and time for recharging the
desiccant printed on the bag. If they differ, use the temperature
and time printed on the bag.
REPLACING THE INTERNAL BATTERY
A lithium battery housed inside the controller maintains power
to the sampler’s memory when the controller is disconnected
from a power source. If it discharges completely, the sampler will
lose all program settings and all data stored in memory when the
external power source is disconnected. The battery requires
replacement every five years. The sampler displays a warning
withinonemonthofitsexpectedlifetoalertyoutothebattery’s
impending expiration. The warning appears each time you turn
the sampler on until you reset the alarm. When you reset the
alarm, the sampler resets the warning to a date 59 months from
the current date.
While replacing the battery, it is likely that the stored readings
will be lost and your program will revert to the default program.
Before proceeding, retrieve the stored data (see Collecting
Reports on page 59) and record your program settings.
To replace the internal battery:
1. Open the controller case (see Opening the Controller Case on
page 77). Separate the case bottom and top by removing the
two distributor connectors (Figure 19).
2. Lift the desiccant box from the case (Figure 19).
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