ACCQPrep HP125
Section 6 Maintenance
6-6
Figure 6-4
Manual Control Settings - Quick Cleaning
5. Select T
HROUGH
HPLC C
OLUMN
for the F
LOW
P
ATH
option.
6. Select N
EXT
for the Pump into Tube # option. By pumping
into a collection tube, the diverter valve is also cleaned of
any residue during this operation.
7. Click the P
UMP
S
OLVENT
B button to pump 100% Solvent B
through the bypass tube and into the collection tubes.
Note
Pumping solvent B at a moderate flow rate (25 to 45 mL/min)
overtime will usually solubilize obstructions. Generally, the rec-
ommended solvent is the highest polarity solvent you have
recently used (solvent B).
8. Monitor the Raw Lamp Energy gauge. As the system
pumps solvent, the raw lamp energy should gradually
improve. Pump solvent for two to five minutes or until the
indicator reaches the far-right of the green range.
If after five minutes the indicator is still in the red range, repeat
the cleaning steps using an alternative solvent. Or, complete the
steps in the Monthly Flow Cell Cleaning procedure (section
6.4.3).
Note
If the numerical values of the Raw Lamp Energy (Figure 6-3)
do not change, or if the first number remains at zero, contact
Teledyne ISCO’s Technical Service department.
6.4.3 Monthly Flow Cell
Cleaning
Perform this procedure as part of your scheduled preventive
maintenance, or when Q
UICK
C
LEANING
A
S
R
EQUIRED
(section
6.4.2) does not improve the lamp energy.
1. Remove the column and insert a union between the tubing.
2. From the menu, select T
OOLS
>M
ANUAL
C
ONTROL
. This
opens the M
ANUAL
C
ONTROL
window.
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