Thermo Scientific 42iQHL Instruction Manual page 259

Servicing
Optional Manifold Replacement
Figure 7–54. Replacing the Manifold pt 2
4. Disconnect tubing.
5. Using a 9/64 hex drive, unfasten four #8-32 socket cap head screws.
Figure 7–55. Replacing the Manifold pt 3
6. Replace the manifold and assemble in reverse order.
Thermo Scientific 42iQHL Instruction Manual 7-53