Service; Removing The Optical Bench - Teledyne IR7000 Operating Instructions Manual

NDIR Gas Analyzer
•
6.2

Service

The IR7000 is highly integrated and has very few user-serviceable
areas. This section covers:
•
•
•
•
6.2.1 Removing the Optical Bench (Non-Explosion Proof)
Removal of the optical bench is for cleaning the sample cell or
replacing the IR source. For any other operation or repair, the analyzer
must be sent to the factory with the optical bench intact.
NOTE:
To remove the optical bench:
1. Turn off the sample gas flow
WARNING: Depending on the sample system used, sample gas may be still
flowing in the sample lines. Make sure that the sample gas is turned
off before beginning this procedure.
2. Flush the instrument lines with nitrogen for 15 minutes.
3. Turn off the instrument and disconnect the power cord. It is
4. Loosen the screws securing the front panel and pull open the
WARNING: Hazardous voltage exists inside. Make sure that the instrument is
OFF and the AC power cord has been removed from the AC power
source.
Recalibrate the instrument (see Chapter 5). Check the gas flow
through the analyzer. With a new filter, the flow will increase.
Readjust the flow to 1.5–2.0 SCFH.
Removal of the optical bench and components for cleaning
Replacing the IR source
Replacing the battery (portable model only)
Replacing the fuse
Instruments with dual optical benches have 2 non-interchangeable
sample cells. To avoid confusion service only one optical bench at a
time.
recommended that you install a lock-out device so that the
instrument cannot be powered back up until the lock-out device
is removed.
drawer containing the optical bench and electronics.
Teledyne Analytical Instruments., - Rev. 3
Maintenance 6
55