White Knight AT100, Owner'S Manual

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Revision 10 8

CROSS CONTAMINATION: When replacing pumps in existing systems,
care should be taken to avoid cross contamination. PTFE (and for that matter
all plastics as well) are porous. As a high purity pump is run in a chemistry,
that chemistry is retained in the pores of the material. This situation is
increased if the pump is used in a thermal cycling application. This being the
case, care should be taken to keep a record of which pumps (White Knight
and most other high purity pump suppliers serial number each pump) have
been in which chemistries and then should be used only in the same
chemistry to avoid cross contamination.

PUMP MONITORING: Pump monitoring can be performed by several
methods such as Fiber Optic stroke detection (special pump heads required)
or Solid State Pressure Switch monitoring which can be installed on any
White Knight pump. These options are described on our web site in the
options section and are available through our authorized distributors.

LEAK DETECTION: Several types of leak detection are also available from
White Knight including Bubble In
– Bubble Out

and fiber optic air side leak
detection. These products are also described on our web site and are
available through our distributors.

PROGRAMABLE CONTROLING: White Knight has developed the Merlin

pump controller that can be used to program a White Knight pump. Run time
and volume “recipes” can be programmed into the
Merlin

to control any
White Knight pump.
Things to Watch For When Replacing Our Competitor’s
Pumps

AIR UNDERSUPPLY: Some other air driven pumps used in pumping high
purity chemistry are not as sensitive to air under supply as the White Knight
pumps are. Make sur
e that if you are replacing a competitor’s pump with a
White Knight pump that the proper sized air line is used. This information is
contained on a page called “warning” which is sent out with every White
Knight pump, is included in this manual and is also available from our web
site.

INLET/OUTLET CONFIGURATION: Most other air driven pumps used in
high purity applications are very particular in their connections to liquid inlet
and outlet for the pump. Many configurations are available on all White
Knight pumps and in most cases we can attach to liquid lines in a very similar
orientation and connection type as the pump that you have been using. A list
of options is available in the ordering section of this manual, on our web site