CI-900 Instruction Manual 8/10/2015
1554 NE 3
rd
Ave, Camas, WA 98607, USA Phone: (360) 833-8835
sales@
cid-inc
.com
www.cid-inc.com
65
Cleaning and Maintenance
The CI-900 housing can be wiped down with a damp cloth if the unit becomes dirty or dusty. Please
make sure to always keep the IN and OUT ports on the front panel clear from any obstructions.
The water in the electrochemical cell of the unit needs to be replenished periodically using distilled
water. The exact hours of use before this will depend on the humidity and temperature of the
environment the CI-900 is typically used in. Warm or low humidity/dry environments will required
more frequent refills. Please contact
for more information or to schedule
instrument servicing.
Maintaining the Electrochemical Sensor
The liquid reservoir must contain a sufficient amount of electrolyte at all times. The electrocatalytic
sensor operates utilizing water and therefore requires replenishment of the electrolyte solution (1
ml/day while operating using continuous mode). Depending on the mode of operation and the
environment in which it is used, the sensor cell may need to be replenished with distilled water
every 2-3 weeks if Chamber In is not set to ON and filled with distilled water. The electrolyte level
should be monitored on regular basis and prior to operation for an extended period of time. The
analyzer will arrive filled with the proper electrolyte. The refill or replenishment of the sensor is
almost fully automated and uses PolarCept.
Only replenish with distilled water.
Refilling is needed on a regular basis if the unit is being run
with dry gas and Chamber In is not on and filled with water. If Chamber In is run continuously with
distilled water, the level of water in the sensor should not change very much and the levels need
only be checked every 6 months.
Check the sensor every 2-3 weeks if run continuously in very dry environments (<20% RH). It is
recommended to refill the sensor before the liquid level drops 20 ml. How often the reservoir needs
to be refilled will depend on the conditions the instrument is used in (temperature, relative
humidity).
Note:
A dry gas being fed into the CI-900 at 25
0
C will cause an expected water loss of 0.1 ml/hr; at 30
0
C a
dry gas will cause a loss of 0.3 ml/hr. Expected water loss can be up to 3 ml/day when feeding dry gas
through the CI-900.
Summary of Contents for CI-900
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