Setting up the plunger wash 2-33
Sparge gas inlet connection
Setting up the plunger wash
The fluid handling unit incorporates a plunger wash flow path, which carries
wash solvent from its reservoir to a cavity behind the high pressure pump
seals. The wash solvent is pumped along this pathway whenever the
controller operates. Having rinsed the cavity, the wash solvent flows back to
the reservoir or to waste. This lubricates the plunger, reducing its wear and
flushing away any mobile phase forced past its seal from the high pressure
side of the pump head.
Caution:
• You must set up the plunger wash when you initially install the fluid
handling unit. Otherwise, the wash seals will fail, ultimately
reducing the life of the high pressure seals in the pump heads.
• If the fluid handling unit has run without the plunger wash system
installed, replace the wash seals before setting up the plunger wash,
or leakage might result.
0.5A
FUSE
CAUTION
DO NOT REMOVE CABLE
WHILE UNIT IS POWERED
CONNECT TO 4000
CONTROLLER ONLY
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Sparge
inlet connection
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