LumaSense Technologies INNOVA 1314i - Manual (Page 129)

Chapter 11
______________________________________________________________________
_____________________________________________________________________________
BE6030-13 1314i Photoacoustic Gas Monitor LumaSense Technologies A/S
Page 129 of 199
Fig.11.7 Refitting the retaining disc
11.1.2 Changing the Filter-paper in the External Air-
filtration Unit
While you do this, we recommend that you wear clean, rubber
gloves.
Tools and equipment required:
Acetone (analytically pure)
Spare fine filter-paper DS 0759
Tweezers with Teflon coating
Cotton buds
Clean rubber gloves
To change the filter-paper:
Switch off the Monitor.
Put a rubber glove on the hand which is to hold the parts of the unit.
Pull the external fine air-filtration unit off the end of the Teflon ®
sampling tube. Hold the stub-end of the external air-filter unit
between your thumb and fingers, and unscrew the coarse air filter
from the end of the unit. Refer to Fig.11.3 .
Remove the used (old) filter-paper and the retaining disc from the
unit using the tweezers. Refer to Fig.11.8.
Fig.11.8 The parts of the external air-filtration unit UD 5023