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Limas11: Safety Cell Cleaning,
9-18
continued
Step
Action
Sample Cell Removal:
7
Undo the 2 couplings 1 of the purge gas lines on the rear of the
analyzer module and pull the purge gas hoses into the interior of the
device. Remove the purge gas hose 7 from the fixing device 8.
8
If applicable, remove the purge gas hose from the input of the flow
sensor (option).
9
To open the leadthroughs of the sample gas tubing, undo the screw 4
(socket-head, wrench opening 3 mm) for securing the retaining board
3, remove the 2 plugs 2 from the leadthroughs and push towards the
interior of the device on the sample gas tubing.
10
Undo the 4 screws 5 (socket-head, wrench opening 3 mm) and
remove 2 mounting brackets 6.
11
Lift the sample cell 9 on the side pointing to the measuring detector
and pull out obliquely upwards from the housing towards the
measuring detector.
12
Remove the purge gas hoses from the connections of the sample cell.
Disassembly of the Sample Cell:
13
Hold the sample cell with 2 open-end wrenches (clamp 1 open-end
wrench in the vise, in order to fix the sample cell in position) and
unscrew the two beam guide tubes 10 and 11.
Take care that the cell windows do not fall out and that they are
not damaged!
14
If the cell windows are stuck to the O-ring seals, they must be
removed by flushing the sample cell with compressed air.
Wear safety glasses when working with compressed air!
Point the opening of the sample cell away from the body!
1 Insert a soft paper towel into the aperture of the sample cell to
collect the cell window.
2 Seal the opening of a sample gas tube with a plug and pressurize
the other sample gas tube with compressed air (p
1 bar). The cell window is thereby removed from the seal. Collect
the cell window in the paper towel.
Fluid can escape from the sample cell!
Follow the relevant safety regulations!
3 Seal the opening of the sample cell with a plug and pressurize the
sample cell with compressed air once again. The other cell window
is thereby removed from the seal. Collect the cell window in the
paper towel.
15
Remove the 2 O-ring seals 22.1x1.6 FFKM70 with a pair of tweezers
and dispose of. Also remove and dispose of the 2 O-ring seals 28x2
FKM80.
The O-ring seals may not be used again! Always replace them
with new seals!
Chapter 9: Inspection and Maintenance
≈ 100 kPa =
e
Continued on next page
42/24-10 EN Rev. 9
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