P
ROC
.# 715001121, R
EV
. A R
EBUILDING
THE
2487 A
UTOPURIFICATION
F
LOW
C
ELL
5
OF
6
2. Using the 1/4-inch flat-blade screwdriver, remove the lens mount screw. The tan-colored
entrance lens washer will remain inside the lens mount screw.
3. Rotate the flow cell so that the entrance lens is facing downward, and give the flow cell
body a light tap to remove the lens.
NOTE:
In some instances, the entrance lens may get stuck in the flow cell body.
Removal of the lens may require using the plastic tweezers or the opposite end of
the lint-free swab.
4. Using the plastic tweezers, remove the clear gasket.
Rebuilding the Flow Cell
Entrance Side
1. Using the plastic tweezers, remove the new clear gaskets from the rebuild kit
,
and
inspect them for dirt.
2. Drop one clear gasket into the groove at the bottom of the entrance lens end of the flow
cell body.
3. Inspect the entrance lens and if necessary, clean it with methanol and the lint-free swab.
4. Using plastic tweezers, drop the entrance lens into the flow cell body with its curved side
facing up. Ensure that the outside diameter of the lens lies inside the counterbore of the
flow cell body.
5. With the tan-colored entrance lens washer of the lens mount screw facing down, lightly
tighten the lens mount screw into the flow cell body. Do not torque.
6. Perform a final check with an eye loop to verify that the optics are clean.
NOTE:
Any contamination will require the cell to be taken apart and recleaned. Because
the gasket has not been under any pressure, it is possible that it can be reused.
7. Torque the lens mount screw to 11 in-lb. This will ensure that the entrance lens does not
crack due to over-tightening, and a leak does not form due to under-tightening.
Exit or Cuvette Side
1. Flip the flow cell body over to the exit (stepped) window side.
2. Using plastic tweezers, remove the second new gasket from the rebuild kit and inspect
for cleanliness.
3. Drop the clear plastic gasket into the groove at the bottom of the exit lens end of the flow
cell body.
NOTE:
Ensure that the gasket is inserted properly.
4. Inspect the exit (stepped) window for cleanliness. If necessary, use methanol and the lint-
free swab to clean it
.
5. Using plastic tweezers, properly position the exit (stepped) window with stem facing
down into the flow cell body.
6. With the black-colored washer of the lens holder facing down into the flow cell body,
secure the exit window in place with the lens holder using the 1/4-inch flat-blade
screwdriver. Do not torque.
7. Perform a final check with an eye loop to verify that the optics are clean.
