Ametek Western Research IPS-4, User Manual

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5-16 | IPS-4 Dual Bench (UV / IR) Analyzer
7. Replacing parts/reassembling the Measuring Cell:
a. Insert a new o-ring in the o-ring groove on the flat surface of the
Reflector Block.
With the Cell held vertically so that the Reflector Block end of the
Cell is up, install a new o-ring by using your thumbs to push it
into the o-ring groove until it is completely seated in the groove.
While holding the edge of the Window, carefully place it in the
Cell.
Orient the Reflector Block correctly, and place it on the Cell.
Ensure the Cell Window does not slide out of position when the
Reflector Block is placed against the Cell.
It is critical to reassemble the Reflector Block in the exact orientation
as it was assembled at the factory.
Secure the Reflector Block to the Cell using three M4 x 20 mm
screws. Tighten the screws evenly.
b. With the Cell held vertically so that the Reflector Block end is
down, install a new o-ring by using your thumbs to push it into
the o-ring groove until it is completely seated in the groove.
While holding the edge of the Window, carefully place it in the
Cell, on top of the o-ring. Install a second, new o-ring on top of the
Window.
If an Optical Bench/Cell Insulator is used, properly align it and
secure it to the Cell using the three M4 x 12 mm screws.
c. Systems with a Cell RTD:
Replace the RTD Clamp on the Cell but do not tighten it until the
Cell is in place in the Oven/Sample System Enclosure.
8. Properly orient the Cell in the Oven/Sample System Enclosure and
secure it to the Window Housing Assembly using the three M4 x 40
mm screws. Tighten the screws evenly.
9. Reconnect the Sample Line and Vent Line tubes to the Cell.
Reconnect all other sample system parts/tubing (use Teflon tape on fit-
tings that originally were taped).
Systems with a Cell RTD:
Replace the RTD in its clamp and hand-tighten it. Do not overtighten.
!
CAUTION