Galvanic Applied Sciences AccuChrome MA2963, Operation Manual

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Revision 4 99 12/15/2018
Figure 9-3: Valco 10-port Valve (some systems have 6-port valves)
e) Remove the valve by loosening the screws that hold down the valve-mounting bracket.
f) Replace the valve and the mounting screws.
g) Re-connect the ten fittings to the correct ports. Re-attach the actuation line. See the
analyzer flow diagram in Section 2.1 for assistance.
h) Return the helium flow to the analyzer. At this point the analyzer should be allowed to
stabilize for 24 hours and is then ready for analysis
The failed valve can then be cleaned or rebuilt and kept on hand as a spare for possible
future valve replacement . Please contact Galvanic Applied Sciences Inc. if a leaky valve is
suspected
before
attempting to replace a valve.
9.6.2 Replacing the Column(s)
The system has either one or two columns as described in Section 2. It may be necessary to
replace the column(s) if they become contaminated with particulate matter or flooded with
liquids. – note - if the columns are changed, it is likely the action list / component table will
require adjustment as each set of columns is slightly different
To replace a column:
a) Turn off the Helium flow
b) Unscrew the nuts that connect the tubing from the column to be removed.
c) Ensure that the tubing from the valve is dry. If necessary, dry the tubing and all tubing in
the system.
d) Install the new column. The nuts should be finger tight plus ¼ turn.
e) Check for gas leaks and slightly tighten the nuts if necessary. Do not over tighten the
nuts.
f) Power up the system and allow the system to equilibrate for 24 hours.
Valve fittings
(numbered 1 - 10)
Valve actuation line
Clamping screw
Mounting holes