3-5
2.6.2 Self-Flush
Solution
Self-flush heads require 250-500 mL of flushing solution. See
section 1.1.4 for self-flush solution recommendations. A pH indicator
that will indicate the concentration of salts in the solution is
recommended as a reminder to change the solution. This flush solution
should be replaced with a fresh solution weekly to avoid frequent
pump maintenance.
2.6.3 Inlet Tubing and Filters
The table below shows the inlet tubing and filter used in the Binary
Solvent Delivery Module. All inlet lines are supplied in a 30" (76 cm)
length and are made of a fluoropolymer material.
2.6.4 Priming the Pump and the Flushing Lines
Connect a syringe to the outlet tubing. Run the pump at a flowrate
of 3 to 5 ml/min. Prime the pump by pulling mobile phase and any air
bubbles through the system and into the syringe (a minimum of 20
ml).
To prime the flush lines for a self-flush head, simply place the inlet
line in the flush solution and connect a syringe to the outlet line and
apply suction until the line is filled with flush solution. Place the
outlet line in the flush solution. Secure both flush lines in the flush
solution container so they stay immersed during pump operation.
2.6.6 Long Term Pressure Calibration Accuracy
This note applies if your pump is equipped with an electronic
pressure transducer. The transducer has been zeroed and calibrated at
the factory. Over the life of the pump, some drift may occur. For
example, it is typical for the zero to drift < 10 p.s.i. after about 1 year
of operation (i.e., with no back pressure on the pump a reading of 1-9
p.s.i. may be displayed). A similar drift may also occur at higher
pressures, and are typically less than 1% (e.g. <50 p.s.i. at 6,000 p.s.i.
back pressure).
If pressure calibration and/or drift is a concern, consult the factory.
The pump can be shipped back to SSI for recalibration. Alternatively,
written calibration and zero-reset procedures are available. Consult the
factory to receive these instructions.
Summary of Contents for BINARY SOLVENT DELIVERY MODULE
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