CRS 202910 User manual

CRS Advanced Filter
System
202900
202910
Operation Guide

2 CRS Advanced Filter System
Document Number 995101
Version 2
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Recycling
For recycling contact your local CRS Sales
Office
Safety Notices
WARNING
WARNINGS
WARNING notices must be read carefully
and understood. Improper use of this
product can cause harm or death to
personnel and damage to property!

CRS Advanced Filter System 3
Operation Manual
This operation manual applies to the following products:
• CRS Advanced Filter System,
part number 202900
• CRS Advanced Filter System, replacement cartridge
part number 202910

4 CRS Advanced Filter System
Filter Setup
Please read through this entire manual to familiarize yourself with the operation of the Advanced Gas
Filter System before beginning setup. Use the same degree of care as you would with any precision
instrument.
Remove the AFS Cartridge, Manifold and Mounting Brackets from the package.
Inspect the filter system. If there is any visible damage contact your supplier immediately.

CRS Advanced Filter System 5
Warnings
Remember to wear safety glasses.
Leak test all fittings when using hazardous or flammable gases.
Do not use above 14 bar (200psi).
Do not open filter cartridge, even after use!
Points on Manifold block are sharp.
Special precautions might be required when using hydrogen. Consult local
regulations and your company’s safety procedures.
The Advanced Filter System is intended to remove 50ppm or less of
oxygen, water, or hydrocarbons (C4 and above) from helium and other inert
gases, nitrogen or hydrogen at flow rates of 1L/minute or less.
Do not use to remove more than 50ppm of oxygen! Rapid heating of the
oxygen adsorbent will occur – and very high temperatures can result.
Limits: Temperature 15ºC to 35ºC
Pressure 0.75 to 14 bar
Gas Supply < 50ppm O2, H2O and Hydrocarbons
Flow Rate < 1L/min

6 CRS Advanced Filter System
Connecting the Manifold
NOTE: Do NOT remove the black plastic covers from the check valves until manifold installation
is complete!
1. The manifold block must be connected to the gas lines. The compression fittings on the block fit
1/8” stainless tubing. If you need to connect the filter to lines of another diameter, adapters will
need to be installed first.
2. Select the bracket, bench-mount (L-shaped) or wall-mount (flat), which you intend to use. Use the
bracket first to mark the holes on the bench or wall where the manifold will be mounted.
The bench-mount bracket can also be attached without screws by using the supplied double sided
tape.
3. Drill the holes to mount the bracket, either to fit the anchors provided or to fit the screws without
anchors, depending on the requirements. In the case of the Bench Mount I configuration (see
pictures below) the bracket should be screwed into position at this point.
4. Insert the long hex-head screw into the back of the manifold if it is not already in position. Fasten
one of the brackets to the manifold, trapping the long screw.
5. Fasten the bracket to the bench or wall in the correct position.
6. Thread the nuts, back ferrules and front ferrules onto the tubing. Insert the tubing into the
manifold fittings, making sure that it reaches the bottom of the fitting.
7. Tighten the compression fittings. Compression fittings normally require about ¾ turn past the
finger-tight position for a good seal. Do not overtighten or the fittings may be damaged.
8. Remove the protective plastic cups from the manifold check valves. Be careful, the ends of the
check valves are sharp!
Bench Mount I
A gap of at least 25mm is
required behind the bracket
Inlet
Outlet

CRS Advanced Filter System 7
Optional Bench Mount I / II without Screws
Make sure to clean the area on benchthoroughly, before placing the bracketin place.
Note: Tapemounting is notintended forwall use
Wall Mount Bench Mount I
Bench Mount II
A gap of at least 25mm is
required behind the bracket
>25mm
Bench Mount I
with no screws
Bench Mount II
with no screws
A gap of at least 25mm is
required behind the bracket
>25mm

8 CRS Advanced Filter System
Mounting the Filter Cartridge
The cartridge is protected in shipping by two port plugs with O-ring seals. In addition, two
aluminum cups limit the exposure of adsorbent during assembly, until they are pierced as the
cartridge is mounted. Exposure to air of several minutes during filter installation or change will
not damage the adsorbent.
1. Remove the two port plugs. Save these plugs in case the cartridge is to be returned in an
exchange after the cartridge has been consumed.
2. Rest the alignment slot of the cartridge on the bottom support rod of the manifold, and
slide it forward until the two ports of the manifold slide into the sockets of the cartridge.
Be careful to point the check valve needles into the port holes so that they do not scratch
the back of the filter.
3. Push the cartridge forward, engage the clamping screw and tighten thoroughly.
4. Leak check the fittings.
If you are using hydrogen or hazardous gas, additional special procedures may be called
for. Consult your company’s safety procedures.
5. The filter cartridge is shipped full of helium, but the gas lines should still be purged with
a gas flow for at least several hours after the initial installation. Moisture levels
downstream of the instrument may continue to improve for several days.

CRS Advanced Filter System 9
Operation and Maintenance
The Advanced Filter System has two visual indicators, one for oxygen and one for moisture. When the
green indicator changes to gray, indicating oxygen contamination, or the blue indicator changes to light
brown, indicating water contamination, the filter cartridge should be changed.
To exchange the spent cartridge, first turn off the gas supply upstream of the filter. Shut down any
instruments downstream of the filter. The check valves in the manifold will interrupt the gas supply when
the cartridge is removed and protect the gas lines from the atmosphere.
Unscrew the clamping screw. This pushes the cartridge off the manifold spools. Only after the screw is
completely disengaged is it possible to remove the filter from the manifold.
Mount the replacement cartridge as instructed in the section “Setup”.

10 CRS Advanced Filter System
Troubleshooting
Condition Possible Cause Recommendation
Leak O-rings between cartridge
and manifold are not leak
tight.
Remove and check the manifold O-
rings for dirt or scratches. Inspect
the sealing surfaces on the cartridge
and manifold for scratches. Replace
if necessary.
Indicator changes
quickly.
Leak in gas line. Leak-check the overall system.
Contaminated Gas Verify that the source meets
specifications as listed under
“Limits” on page 5.
If the gas source is supplying other
filters as well, check the condition
of these filters. Otherwise check
specification and procedures for
verifying gas quality.