6700 Portable Sampler User Manual - Isco
6700 Portable Sampler User Manual - Isco
6700 Portable Sampler User Manual - Isco
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CAUTION<br />
Desiccant may produce<br />
irritating fumes when heated.<br />
Observe the following<br />
precautions:<br />
Useaventedoveninawell<br />
ventilated room.<br />
Do not remain in the room<br />
while recharging is taking<br />
place.<br />
Use the recommended<br />
temperature.<br />
There have been reports of<br />
irritating fumes coming from<br />
the desiccant during reactivation.<br />
While our attempts to<br />
duplicate the problem have<br />
been unsuccessful, we still<br />
urge you to use caution.<br />
Material Safety Data Sheets<br />
are provided in Appendix B.<br />
Battery Warning<br />
WARNING!<br />
REPLACE INTERNAL<br />
BATTERY BEFORE<br />
17-OCT-97<br />
Note<br />
<strong>Isco</strong> recommends you replace<br />
the battery every five years, as<br />
soon as the battery warning<br />
appears. To insure that the<br />
replacement meets <strong>Isco</strong>’s<br />
specifications, use only <strong>Isco</strong><br />
replacement batteries. (See<br />
Appendix D, Replacement<br />
Parts.)<br />
<strong>6700</strong> SAMPLERS<br />
RECHARGING THE DESICCANT<br />
The <strong>6700</strong> <strong>Sampler</strong>s use a desiccant bag inside the controller case<br />
to prevent moisture damage to its electronic components.<br />
Follow the instructions in Opening the Controller Case on page<br />
77 to open the controller. Remove the bag from the cardboard box<br />
atthefrontofthecase(Figure 19).<br />
How To Recharge The Desiccant<br />
Do not put the cardboard box in the oven. You should recharge<br />
the desiccant when the area marked “30” on the paper humidity<br />
indicator turns pink.<br />
Place a sheet of brown paper on a flat metal sheet. You can use a<br />
brown grocery bag and a typical cookie sheet. Place only the bags<br />
on the sheet. Do not stack the bags on top of each other or allow<br />
them to touch. Place in a vented, circulating forced air, convection<br />
oven in a well ventilated room. Allow two inches of air space<br />
between the top of the bags and the next metal tray above the<br />
bags. Keep the tray a minimum of 16 inches from heating element.<br />
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<br />
should be immediately removed and placed in an air tight container<br />
for cooling. The desiccant will be recharged to approximately<br />
80 to 90% of its previous capacity. After repeated<br />
recharging, the desiccant bag may require replacement.<br />
Some bags will have the temperature and time for recharging the<br />
desiccant printed on the bag. If they differ, use the temperature<br />
and time printed on the bag.<br />
REPLACING THE INTERNAL BATTERY<br />
A lithium battery housed inside the controller maintains power<br />
to the sampler’s memory when the controller is disconnected<br />
from a power source. If it discharges completely, the sampler will<br />
lose all program settings and all data stored in memory when the<br />
external power source is disconnected. The battery requires<br />
replacement every five years. The sampler displays a warning<br />
withinonemonthofitsexpectedlifetoalertyoutothebattery’s<br />
impending expiration. The warning appears each time you turn<br />
the sampler on until you reset the alarm. When you reset the<br />
alarm, the sampler resets the warning to a date 59 months from<br />
the current date.<br />
While replacing the battery, it is likely that the stored readings<br />
will be lost and your program will revert to the default program.<br />
Before proceeding, retrieve the stored data (see Collecting<br />
Reports on page 59) and record your program settings.<br />
To replace the internal battery:<br />
1. Open the controller case (see Opening the Controller Case on<br />
page 77). Separate the case bottom and top by removing the<br />
two distributor connectors (Figure 19).<br />
2. Lift the desiccant box from the case (Figure 19).<br />
79