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(2) Cleaning the block cell (See Fig. 5-2)
1) Stop feeding the gas for measurement. If toxic gas is contained, purge the measurement cell fully
with zero gas.
2) Turn off the power switch.
3) Remove the pipe connected to the measurement cell.
4) Remove the connector of the detector from the printed board.
In the case of 2-component analyzer, also remove the connector of the detector for the second
component (No.13 of Fig. 5-2) from the printed board. Loosen the two screws fastening the detec-
tor for the second component (No.14 in Fig. 5-2), and remove the detector for the second compo-
nent.
5) Remove the two screws (No.10 in Fig. 5-2) fastening the detector for the first component to the
infrared ray light source unit. The cell can be removed together with the detector.
6) Loosen the two screws fastening the cell (No.6 in Fig. 5-2), and remove the cell. One of the win-
dows of the block cell is sandwitched between the detector and the block cell, but is not fastened.
Remove the cell with the detector facing up, being careful not to drop it.
7) When cleaning the internal surface of the cell and the infrared ray penetration window, remove
large dust using a soft brush first, and then carefully wipe them with soft cloth.
Never use hard cloth.
CAUTION
The window can be broken easily.
Handle it with care, and be careful not to wipe it strongly.
8) If severe contamination is found on the window or within the cell, paste absolute ethanol on soft
cloth, and wipe off the contamination with it.
9) If the window is found to have corroded, attach chrome oxide powder to soft cloth, and wipe the
window with it if the corrosion is not so severe. If corrosion has progressed significantly, replace
the window.
10) Reverse the procedure in 3) to 6) to assemble the cell.
CAUTION
Place the O-ring between the window holder and the cell. Be careful not to place it in a wrong
place.
In the case of 2-component analyzer, mount the detector for the second component lastly, being
careful not to create a gap between the detector and that for the first component.
Insert the output cord connectors of the detector into the printed board, paying attention not to
reverse the positions for the first and the second components. Insert the connector for the first
component to CN11, and that for the second component to CN1.
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INZ-TN2ZSVS-E
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