Büchi Labortechnik AG
Cleaning and servicing | 7
Operation Manual Pure Chromatography Instruments
77/102
Navigation path
➔
Tools
➔
Manual Control
➔
Column Flushing...
Precondition:
R
A bypass is installed. See Chapter 6.4.4 "Installing and removing a column",
page 58
u
Navigate to the
Column Flushing
dialog according to the navigation path.
Sonicate the check valve
Materials needed:
Open-end wrench, ½”, 9/16" x 5/16"
Torque wrench
u
Switch the On/Off master switch to Off.
u
Disconnect the mobile phase tubing from the inlet (bottom) of the pump head
using the 9/16” open-end wrench.
u
Disconnect the mobile phase outlet tubing from the top of the pump head using
the 5/16” open end wrench.
u
Remove both check valve housings from the pump head using the ½” open-end
wrench.
ð
The check valve capsule is accessible.
u
Sonicating the check valve for 10 min in the appropriate solvent.
u
Install the check valve.
u
Install the check valve housings back into the pump head.
u
Tighten the check valve housing to 75 inch pounds with the ½” torque wrench.
7.6
Cleaning the instrument
Navigation path
➔
Tools
➔
Manual Control
➔
Column Flushing...
Precondition:
R
A purging solvent is assigned to the instrument. See Chapter 5.7 "Assigning
solvent to solvent lines", page 26
u
Install a bypass. See Chapter 6.4.4 "Installing and removing a column", page 58
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