Cell Warranty - Teledyne 311 Instruction Manual

To offset the possibility of not having a replacement cell available when it is needed, TAI
recommends that a spare cell be purchased shortly after the instrument is placed in service, and
each time the cell is replaced thereafter.
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
incurring damage. Under no circumstances, disturb the integrity of the cell package until the cell
is to be actually used. If the cell package is punctured and air permitted to enter, the cell will
immediately start to react to the presence of oxygen.
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 clip. Do not touch the
silver colored sensing surface of the cell -- as it is covered with a delicate Teflon membrane that
can be ruptured in handling.
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 inert gas (or the sample), and then
proceed as directed in Section 3.2.1.
4.4 Cell Warranty. The Class B-2C cell employed in the Model 311 is warranted for
80,000 percent-hours or six (6) months of service (whichever occurs first).
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 311 should not be used in applications where CO is a major component in the
2
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 on cell life.
2
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.
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