AFS L-SINGLE User manual

INSTRUCTIONS FOR USE
Preparation
1. Start by removing the cellophane wrapping from the filter cartridge.
2. Carefully inspect the bottom of the filter housing where the paper is looking for any tears or imperfections that
could result in a rupture. Any questionable defects should be addressed with AFS for a replacement prior to use,
or use a secondary backup filter (as outlined below)

3. (Optional): For best results poke a small hole in the filter lid and place in a vacuum oven at 100˚F for 30-60
minutes prior to use. This helps eliminate any humidity/moisture that may have accumulated in the media.
4. Peel foil lid away from cartridge and discard.
5. Place filter cartridge into filter housing.

6. Using a seal/bearing punch (available at most automotive stores/harbor freight) firmly press the filter media to
ensure a tight packing in case pack was disrupted during the shipping process.
*** Important! Do not skip this step. Failure to pack will cause channeling which could result in poor filter
performance and possible filter paper rupture. ****
Installation
7.
a. For internal systems provided by the OEM attach the filter housing to the flange using the 2.5” tri-
clamp. The filter cartridge itself acts as the gasket. Tighten bolts to 10ft/lbs.
Place entire assembly back into column and follow reassembly procedures per manufacturers’
instructions.
b. For external systems running inline, assemble the base of the filter housing by installing the 2.5” -> 1.5”
reducer using a gasket and clamp. The base of the filter housing is the side closest to the screen plate.
Tighten bolts to 4ft/lbs.

Install another 2.5”->1.5” cap reducer onto the top of the filter housing using the filter itself as the
gasket. Tighten bolts to 10ft/lbs.
Place inline assembly within the flow path of your extraction system using standard 1.5” tri-clamp
connections. For best results/control place the assembly directly below a ball valve.

*Please note, inline housings are not equipped with pressure relief valves or other safety related
components. Please ensure your system has adequate protection for where housing is located. Do not
place between two ball valves or closed cylinders without adequate protection.
Operation
8. Operate the extraction system as normal with the fill/soak process (see manufacturer’s recommended operating
procedures).
9. When it comes time for the solution to pass through the filter housing it will require Nitrogen or Argon assist (do
not use compressed air). Set the pressure on the nitrogen regulator to no more than 60psi.
10. Connect the nitrogen line to the top of the materials column and fill the head space with nitrogen.

11. Activate the recovery pump as with a normal operation. The combination of the nitrogen pressure above the
filter and the vacuum pressure below the filter will cause the solution to flow through the media. Depending on
media type and solution viscosity flow may vary. It is recommended to suspend the addition of heat to the
collection vessel until ample solution has passed through the filter allowing a liquid solution to pool in the
collection vessel. This will help prevent burning of extract materials if evaporation/recovery is happening at a
rate faster than the flow through the filter.
12. Once the solution is finished passing through the filter (as observed by sight glasses when available), you may
vent off the nitrogen from the system to keep it from circulating through the system and being recovered into
the recovery tank.
Disposal
13. Once the run is complete, remove the filter cartridge from the housing assembly and discard.
*Some contents of filters may cause irritation if handled. Wear appropriate protective gloves and eye wear when
handling. Do not remove contents of filters as some contents may be harmful to respiratory system. In case of
accidental spillage, use appropriate respiratory masks. Do not eat contents. Not intended for internal use.
*Prop 65: May contain chemicals known to the state of California to cause cancer, birth defects, or other reproductive
harm.

(Optional) Secondary Backup Filtration
For added safety against a rupture condition a secondary filter may be used. Secondary filters will slow the flow/recovery
rate, however they provide a secondary layer of protection in case the initial filter paper layer of the AFS filter should fail.
AFS filters have been tested to 120psi head pressure without failure; however other varying conditions could contribute to
membrane failure. Inexperienced with AFS/CRC it is recommended to use secondary filtration layer.
OEM or inline housings can accomplish a secondary filter backup by placing a secondary 2.37”(69mm) quantitative filter
paper into the OEM housing. Then place Dash# 035 O-ring (9452K123) into the OEM housing on top of the filter paper.
Make sure the o-ring is seated fully into the base or it will roll to the side when the AFS filter is inserted. Next slide the AFS
filter into the OEM housing. As you tighten the tri-clamp seal into your extraction unit it will force the AFS filter to seat
securely into the housing sealing against the o-ring.
Opt 2.
Inline housings have a secondary tri-clamp on the bottom of the housing where a secondary sintered stainless filter may be
used as a backup filter in case the primary filter paper were to rupture. Using a secondary process will slow the
flow/recovery process, however add extra security in case of rupture.
*Notice*
There are many factors that can affect the tensile strength of the filter paper in the base of the housings, and mistreatment of the filters can
result in rupture of the filter membrane causing media to become infused into the extracted products. These include incorrectly packing before
use causing channeling, physical damage to filter membrane, excessive head pressure, and aqueous (water) reagents [too much water moisture
will weaken the membrane; use dried or heavily frozen materials to ensure no water contamination]. Due to so many varying factors, and lawful
limitation on purchasing of extract, AFS will not be responsible for product loss due to media contamination. It is the extractor’s responsibility to
ensure adequate due diligence and product knowledge when using AFS filters. If you are uncertain use a secondary/backup filter.