Troubleshooting the Anesthetic Gas Module 9 Anesthetic Gas Module
219
Optical Path Disgnostic Checks
Symptom Possible Cause Corrective Action
MeasOpticPath shows
Problem
Defective or
contaminated sample
cell
Remove the sample cell and visually check it
to see if it is contaminated. The inside of the
cell should be smooth and shiny. If not,
replace the sample cell. Wait after the first
Zero Calibration to see whether the problem
disappears.
If problems are cleared after warm-up, but
were present during warm-up, let the AGM
run for at least 90 minutes after Power On to
allow the unit to reach the 90 minutes zero.
This is a special zero calibration where "new"
zero constants for the next warm-up phase
are stored. This prevents that problems are
flagged during the next warm-up phase
Defective IR
measurement assembly
head
Carry out the checks for the IR measurement
assembly head . With the replacement head
connected, check that Optical Path problem
is no longer flagged. If the problem is gone,
use a new head. If not, continue checks as
described below.
Defective power supply
Carry out the checks for the power supply .
Defective main PC
board
If the checks above do not solve the problem,
replace the main PC board.
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