Humboldt HM-4187H De-Airing Tank - Manual (Page 3)

Introduction:
The Humboldt HM-4187H De-Airing Tank is designed to remove
dissolved gasses from ordinary tap water. The De-Airing tank requires
a source for vacuum and tap water. The apparatus consists of a closed
cylinder with hose attachments for use. The HM-4187H can be used
in conjunction with any of the distribution panels, as well as the Flex
panels.
Installation:
Using 1/4 inch O/D tubing, attach a vacuum line to the connector at
the top of the tank by pushing the line into the connector until it is
fully seated. Using the same size tubing, connect a line from the “Tap
Water Out” connector at the back of the distribution panel to one of
the connectors at the back of the tank base. Connect another line from
the “De-Aired Water In” line at the back of the distribution panel to the
other tubing connector at the back of the tank base.
Operation:
After all of the connections are made, fill the tank to approximately
¾ full with tap water. Turn on the vacuum by rotating the knob on the
front of the distribution panel or Flex panel. On the distribution panel
or the Flex panel, there are two valves for use with the de-airing tank.
One valve controls the filling and draining of tap water into and out of
the tank and the other controls the vacuum or pressure to the tank. The
draining and pressurizing operation is for the purpose of cleaning the
tank and not for test purposes. During a test, the de-aerated water from
the tank would be controlled by another valve on the distribution panel
where the water connection to the base of the triaxial cell is located.
Do not fill the tank with tap water while de-aerated water is being used
as this would allow tap water to mix with the de-aerated water in the
sample. Also, do not fill the tank while using the vacuum as accidental
overfilling of the tank would allow water to be drawn into the vacuum
lines and possibly into the vacuum pump.
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