Ametek 241CE II Operator's Manual page 136

6-22 | Model 241CE II Hydrocarbon Dewpoint Analyzer
13. Replace parts in the Filterblock sections:

The Membrane Filters, o-rings, Sintered Disks, and Flow Restric-
tors can be re-used at the 6-month cleaning interval, unless they are
NOTE
damaged (are creased, have holes, or are transparent) or contaminated
(with liquids, oils, or waxes); in this case, replace with new parts.
Always replace the Membrane Filters annually.
!
Be extremely careful not to damage the new Membrane Filters.
CAUTION
The High-Flow Membrane Filter is bonded to its o-ring at the fac-
tory – do not attempt to separate them.
With the membrane side of the Back Filterblock section facing up,
install (1) cleaned (or new, P/N 300-6257) Sintered Disk into its recess.
Install (1) new #006 o-ring (P/N 300-6244) in the o-ring groove. Care-
fully install (1) cleaned (or new, P/N 300-8594, comes with separate
#216 o-ring) Type-5 Membrane Filter by centring the Membrane over
the Sintered Disk and the o-ring groove. Place the o-ring over the
Membrane and gently press the o-ring into the groove in one location.
Continue with the section across from the first location and gently
press the o-ring into the groove. Continue alternating locations/press-
ing until the o-ring is completely seated in its groove and the Mem-
brane is tightly stretched.
With the membrane side of the Center Filterblock section facing up,
install (1) cleaned (or new, P/N 300-6257) Sintered Disk into its recess.
Install (1) new #006 o-ring (P/N 300-6244) in the o-ring groove. Care-
fully install (1) cleaned (or new, P/N 300-5862, comes with attached
#216 o-ring) High-Flow Membrane Filter by centring the Membrane/
o-ring over the Sintered Disk and the o-ring groove (o-ring side up).
Gently press the o-ring into the groove using the same method as the
Type-5 Membrane Filter, until the o-ring is completely seated in its
groove and the Membrane is tightly stretched.
14. In each Filterblock section, ensure that the o-rings are still in place and
stack the three sections together while aligning the screw holes. Install
the (6) M6 x 50 screws and tightening them in a cross-pattern. The
torque specification to fasten M6 screws is 4.0 Nm, ±0.7 Nm (36 in.-lb,
±9 in.-lb).