Maintenance and Troubleshooting | 6-21
9. Remove the (3) M6 x 20 screws and remove the Filterblock Core.
Inspect the Back Filterblock interior for signs of particulate or waxy
films.
Remove the M6 nut, Seal Washer, o-rings (#010, #115), and the Filter
Cartridge.
10. Clean all metal parts in the assembly – including the Sintered Disks –
with a cleaning solvent (Isopropanol or reagent-grade acetone are
both acceptable solvents). The solvent must not attack aluminum or
stainless steel. If necessary, gently clean the parts with a soft, non-
abrasive cloth and make sure they are free of debris. Allow all parts to
air dry thoroughly before reassembling them.
11. Installing Flow Restrictors:
If reusing the original Flow Restrictors, install (1) new #008 o-ring (P/N
300-6241) on each (3) Flow Restrictor (P/N 100-1219). Install (1) Flow
Restrictor in each (3) Filterblock section, and hand-tighten them.
If using new Flow Restrictors (comes with #008 o-ring), install (1) Flow
Restrictor in each (3) Filterblock section, and hand-tighten them.
Apply Teflon tape to the NPT threads on the 50 cc/min Flow Restrictor
fitting (P/N 300-6245), the 1/8-NPT Plug (P/N 300-5774), and the Male
Connector (Vent to Flare, P/N 300-1239) and replace them in their
respective Filterblock sections.
12. Reassemble/replace parts in the Filterblock Core:
Install a new #115 o-ring (P/N 300-6242) in the Filterblock Core.
Install a new Filter Cartridge (P/N 300-6217). Install a new #010 o-ring
(P/N 300-2375) in the Seal Washer (P/N 300-6151) and secure the Filter
Cartridge on the Filterblock Core with the Seal Washer and M6 nut.
Lightly tighten the nut to avoid crushing the Filter Cartridge.
Replace the Filterblock Core in the Back Filterblock, aligning the screw
holes as you push it into the Back Filterblock section. Replace and
tighten the (3) M6 x 20 screws using a torque screwdriver (4.0 Nm,
±0.7 Nm (36 in.-lb, ±9 in.-lb)).
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