EC155 CO
2
and H
2
O Closed-Path Gas Analyzer
37
9.2.1.2 Cleaning the Bypass Tubing and Vortex Chamber
To clean the bypass tubing and vortex chamber follow the steps below.
1.
Pull the bypass tube out of the bypass tube sleeve (see FIGURE
). If the
tube is visibly dirty, remove the section of tubing by loosening the 1/4-in
Swagelok nut on the other end. Shake the tube out, or if needed, flush it
out with a solvent such as water or a water-isopropyl alcohol solution. The
tubing can also be replaced with 63.5 cm (2.1 ft) length of high-density
polyethylene tubing of 1/4-in outer diameter and 1/8-in inner diameter.
2.
Once clean, reattach the tubing to the vortex filter fittings. Be sure not to
over tighten the Swagelok nut.
FIGURE 9-2. Exploded image of vortex intake with bypass tube pulled
from bypass tube sleeve, and bypass tube sleeve pulled back away
from vortex chamber
3.
Slide the bypass tubing sleeve about 3 cm (1.2 in) along the intake towards
the sample cell until there is enough space to pull the base of the vortex
chamber out of the sleeve. Refer again to FIGURE
4.
Pull the vortex chamber slightly backwards towards the sample cell in
order to free it from the intake end piece. Refer to FIGURE
Be careful not to stretch the vortex inlet heater cable by
pulling the vortex chamber too far from the intake.
FIGURE 9-3. Pulling gently backwards on the vortex chamber will
release it from the intake end piece. The vortex inlet heater cable
remains attached.
CAUTION
Vortex Chamber
Bypass Tube Sleeve
Bypass Tube
Vortex Chamber
Intake End Piece
Vortex Inlet
Heater Cable
Содержание EC155
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