The spare cell should be carefully stored in an area that is not subject to large variations in
ambient temperature (75 Deg. F nominal), and in such a way as to obviate any possibility of
damage. Under no circumstances, disturb the integrity of the cell package until the cell is to be
actually used.
No tools are required to replace the cell in the instrument. Simply unscrew (ccw) the plug at the
bottom of the analyzer and the cell will drop out of the manifold cavity.
Remove the new cell from its package, and carefully remove the shorting device. Place the cell
on the end of the manifold plug -- so that the sensing surface of the cell is in contact with the
plug and the electrical contact plate end of the cell is facing upwards. Insert the cell and plug in
the manifold cavity, and screw the plug back into place. Apply as much pressure as you can
with your fingers, but use no tools.
After the cell has been installed, purge the instrument with an oxygen free gas (or the sample),
and then proceed as directed in Section 3.1 and 3.2.1.
4.4 Cell Warranty. The Class B-2CXL cell employed in the Model 311XL is
warranted for six (6) months of service.
With regard to spare cells, service time starts when the cell is removed from its shipping
package. The customer should stock only one spare cell per instrument at a time. Do not
attempt to stock- pile spare cells.
The Model 311XL should not be used in applications where CO
2
is a major component in the
sample. Concentrations of 1,000 ppm or less will not effect the cell performance. The following
page is a graph showing the effects of CO
2
on cell life.
If a cell was working satisfactorily, but ceases to function before the warranty period expires, the
customer will receive credit, toward the purchase of a new cell.
Customer’s having warranty claims must return the cell in question to the factory for evaluation,
after obtained an RMA number. If it is determined that failure is due to faulty workmanship or
material, the cell will be replaced at no cost to the customer.
-9-
WARNING: Evidence of damage due to tampering or mishandling will render the cell
warranty null and void.