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1 About this manual
Filter replacement must take place as follows:
1. Decommission the device as specified in sec-
tion 6.5 and switch off the measuring element.
Observe a possible PGC timeout on the down-
stream corrector.
24
2. Loosen the knurled screw connection and un-
screw the filter. Since residual pressure may
still be present in the filter, hold the filter firmly
with your other hand.
3. Replace O-ring seals on the filter base accord-
ing to the manual accompanying the filter.
4. Slide the knurled screw connection over the
new filter.
5. Remove the metal plug on the new filter.
6. Insert a new filter and turn it until it is seated in
its guide.
7. Re-tighten the knurled screw connection.
8. Unscrew the compression fitting connection
on the outlet of the filter base to install the filter
by jetting.
9. Re-connect the carrier gas supply. Carrier gas
then streams under high pressure at the loos-
ened screw connection.
10. Flush the filter(s) for at least 10 minutes in this
manner.
11. Close the screw connection again under flow.
12. The screw connection and area of the knurled
screw connection must be checked for leaks
with a tracing device.
13. Wait at least 6 hours until the measuring ele-
ment has been flushed.
An inadequate flushing time can result in irreparable damage to the measuring element!
Manual PGC 9300 EN07 June, 18th 2018
Caution
Filter cap with
color codes
Filter granulate
Color indicator
for moisture
Knurled screw
connection
Figure 2: Molecular
sieve filter
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