Page 43
INSTRUMENT COVER REMOVAL
•
Remove the access cover. See
ACCESS COVER REMOVAL
on page 42.
•
The sensor block is hot (68 °C); do not touch it with bare hands until it has been
allowed to cool down.
•
Remove the instrument cover by unlatching the two latches on the back chassis wall. A
long screwdriver is helpful.
TO INSPECT THE FILTER AND TUBING:
•
Unplug the power cable.
•
Remove the cover See
ACCESS
COVER REMOVAL
on page 42.
NOTE: Not all instruments use a
Hydrophobic Filter but if it is used, it
is visible at right center, above the
Sensor Block.
•
Examine the filter and tubing. If a
deposit or discoloration is observed in
the clear tubing between the filter and
the Sensor Block, the filter and tubing
should be replaced, and the entire
sample flow path cleaned with
isopropyl alcohol.
***IMPORTANT ***
Never use methanol for cleaning any part of the instrument.
Methanol interferes with calibration of the RH sensor, and
is very difficult to remove from the flow system.
