GE MOA 280i, Руководство по эксплуатации и обслуживанию

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GE Analytical Instruments ©2006
13-14
DLM 14291 Rev. A
•
With the outlet stopcock on the purge vessel closed, loosen the 1/4” nut on
the Swagelok union connected to the outlet of the purge vessel.
•
Once loose, slowly pull the union off the purge vessel while observing the
level of NaOH in the bubbler. As the union is removed, air will be drawn
into the bubbler, bringing the pressure in the bubbler back to atmospheric
pressure.
•
When the union is removed and the bubbler is at atmospheric pressure,
disconnect the IFD line from the NOA frit restrictor.
•
Remove the screw cap on the purge vessel.
•
Use a squeeze bottle filled with deionized water to rinse the purge vessel
several times with water.
•
Open the outlet stopcock and use a squeeze bottle to rinse the sides of the
condenser with water.
•
If the condenser cannot be totally cleaned by rinsing, loosen the clamp so
that the purge vessel can be tilted. Fill the purge vessel with water then
replace the screw cap a few turns so that it is not tightly sealed, and will
allow air to escape. Tilt the purge vessel to fill of the condenser with water
then return to the upright position. Repeat until all of the contamination
has been removed.
•
To clean the frit, turn off the gas inlet stopcock and unscrew and remove
the needle valve on the purge vessel. Use a wash bottle or pipette to fill the
glass tube between the needle valve connection and the frit with water.
•
Replace the needle valve, and open the gas inlet stopcock to allow the gas
to force the water through the frit. Once the water has been passed through
the frit, turn off the gas inlet stopcock, remove the needle valve, and add
more water to the tube. Replace the needle valve, and turn on the gas to
force the water through the frit. Repeat this procedure 3 or 4 times to
completely clean the frit and tubing.