ACCQPrep HP125
Section 6 Maintenance
6-14
Figure 6-17 Reinstalling the fasteners
6.5.3 Seal Conditioning
New seals must be conditioned prior to use. Conditioning is the
process of running the seals wet under controlled conditions to
allow surfaces to seat and break-in for proper function of the
seal.
Note
Buffer solutions and salt solutions should never be used to
condition new seals. Recommended solvents are HPLC-grade
methanol or acetonitrile and water
Suggested Conditioning
Parameters
Using a suitable column, run the pump with a 50:50 solution of
Methanol/Water for 30 minutes at a flow rate that results in a
pressure of ~1000 psi. Then run the pump for another 15
minutes at a flow rate that results in 3000 psi.
6.5.4 Check Valve
Replacement
The following instructions are for the removal and replacement
of the pump check valves for the
ACCQ
Prep
HP125 system.
1. Turn the power O
FF
.
2. Access the pump compartment by grabbing the edges of
front panel and pulling forward on both sides (Figure
6-18).
Figure 6-18 Front panel of the ACCQPrep
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