Waters ACQUITY UPLC Operator's, Overview And Maintenance Manual page 40

4. Remove the active preheater assembly from the retainer in the column
compartment.
5. Using a needle-nose pliers, gently compress the top and bottom of the
active preheater retainer, and pull it out of the column compartment.
Gently compress
retainer here
6. Remove the clear, protective backing from the thermal gasket, and with
the thermal gasket oriented vertically, center it between the two
threaded holes.
36
Active preheater
assembly
Threaded holes
Location of thermal gasket