CI-340 Operation Manual
CID Bio-Science
1554 NE 3
rd
Ave
Camas, WA 98607, USA
Phone: +1 (360) 833-8835
Fax: +1 (360) 833-1914
sales@cid-inc.com
www.cid-inc.com
64
To begin operation, turn the power on. This should be done 5 to 10 minutes before the system
is to be used, allowing time for the flow to stabilize. It may take about 5 to 10 minutes to purge
the system thoroughly. Set the CO
2
fully on during this time. The fastest way to purge the CO
2
chamber the first time it is used after standing for a long period of time is to turn the CO
2
fully
on, then turn the CO
2
fully off several times. This will cause ambient air that is trapped in the
chamber to be replaced with pure CO
2.
Turn the H
2
O knob to adjust the relative humidity. This must be done before adjusting the CO
2
level, since changes will affect the CO
2
concentration. The desiccant used to control humidity
absorbs CO
2
gas.
Turn the CO
2
knob to adjust the CO
2
level. There is a slight delay before stabilization occurs It
will generally take a minute or so to fully stabilize (assuming the CO
2
chamber has been
previously filled with CO
2,
or 2 to 10 minutes if it has not been filled with CO
2
).
To enable the CI-340 instrument to control the CO
2
/ H
2
O levels remotely, the accessory cable
must be connected to the CI-340 and the yellow color-coded plug must be inserted into the
remote control jack of the CI-301AD. Turn the CO
2
knob fully counterclockwise and the H
2
O
knob fully clockwise.
REPLACING THE CONSUMABLES
The CI-301AD requires periodic replacement of the CO
2
, soda lime, silica gel, water, and filters.
All materials should be available locally through chemical or laboratory supply dealers, or they
may be ordered from CID, Inc.
Soda Lime
The soda lime should last for 8 to 24 hours of operation under most circumstances. Actual
operating time will depend upon ambient CO
2
levels. The soda lime supplied is an indicating
variety: it will turn slightly blue as it becomes exhausted.
The output of the CI-301AD may become unstable and show an increase in the CO
2
level as the
soda lime reaches exhaustion. When this happens, replace the soda lime.
Use the same procedure described under Operating Instructions
–
“Adding Consumable” to
refill the soda lime tube. Replace the filters (see Filters section below). Remember to gently tap
the tube to help settle the material. Keep all containers of fresh soda lime tightly sealed to
prevent absorption of ambient CO
2
.
Silica Gel
The silica gel should last from four to eight hours of operation under most circumstances.
Actual operating time will depend on ambient humidity levels. The silica gel supplied is a
beaded, dust-minimizing material of an indicating variety. The fresh material is dark blue and
Summary of Contents for CI-340
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