Waters ACQUITY Isocratic Solvent Manager Overview And Maintenance Manual page 85

To replace the leak sensor:
To avoid damaging electrical components or circuitry of a
Caution:
system module, do not disconnect an electrical assembly from the
module while the module remains connected to the ac supply source.
Follow this procedure to completely interrupt power to the module:
1. Set the module's power switch to Off.
2. Disconnect the module's electrical supply cord from the ac source.
Afterward, wait 10 seconds thereafter before you disconnect an
assembly.
1. Power-off the ISM.
2. Open the ISM's door, gently pulling its right-hand edge toward you.
3. Press down on the tab, to detach the leak sensor connector from the
front of the instrument.
Tab
Leak sensor connector
September 26, 2013, 715004208 Rev. A
Replacing the optional leak sensor
85