Install the Lenovo Neptune Liquid to Air Module

Follow instructions in this section to install the L2AM (The Lenovo Neptune Liquid to Air Module).

About this task

Safety information for liquid detection sensor module cable

S011

CAUTION

Sharp edges, corners, or joints nearby.

Attention

• Read Installation Guidelines and Safety inspection checklist to ensure that you work safely.

CAUTION

When removing a new L2AM from the shipping box, lift out the cold plate assembly with the shipping tray attached to prevent thermal grease on the cold plate assembly from damage.

CAUTION

Ensure that the module handle (LACM heat sink bracket) is installed when removing or installing the L2AM. Do not touch the radiator fins. Touching the radiator fins might damage the L2AM.

Prepare the following screwdrivers to ensure you can install and remove the corresponding screws properly.

Torque screwdriver type list	Screw Type
Torx T20 screwdriver	Torx T20 screw
Phillips 2 screwdriver	Phillips 2 screw

Procedure

1. Prepare your server.
   1. Install the liquid detection sensor module holder to the chassis.
      
      
      

      1. Align the liquid detection sensor module holder to the corresponding screw hole on the chassis.

      2. Tighten the Phillips 2 screw and ensure that the holder is secured in place.

   2. Install the radiator tray to the chassis.
      
      
      

      1. Place the tray evenly into the chassis and then move it to the right so that the screw hole on the tray aligns with the hole on the chassis.

      2. Tighten the Phillips 2 screw.

2. Separate the L2AM module from the shipping tray.
   
   
   

   1. Loosen the six Torx T20 screws on the L2AM module shipping tray.

   2. Grasp the middle of the module handle (LACM heat sink bracket) and one of the two T20 screws fastening the radiator to lift the L2AM by the module handle (LACM heat sink bracket) to separate the module from the shipping tray.

3. Make sure you have an alcohol cleaning pad available.
   Attention

   If there is any old thermal grease on the processors, gently clean the top of the processors with an alcohol cleaning pad.
4. Install the L2AM on the processor board.
   
   
   

   1. Align the triangular mark on the cold plate assembly label with the triangular mark on the processor carrier and processor. Install the LACM onto the processor-carrier.

   2. Fully tighten the fourteen Torx T20 nuts in the installation sequence shown on the cold plate assembly and the radiator. Tighten the screws until they stop; then, visually inspect to make sure that there is no gap between the screw shoulder beneath the cold plate assembly and the processor socket. (For reference, the torque required for the fasteners to fully tighten is 1.22-1.47 newton-meters, 10.8–13.0 inch-pounds.)

5. Separate the module handle (LACM heat sink bracket) from the module.
   
   
   

   1. Loosen the six Torx T20 screws on the module handle (LACM heat sink bracket).

   2. Grasp the middle of the module handle (LACM heat sink bracket) to separate it from the module.

6. Install the leak detection module to the holder.
   
   
   

   1. Install the liquid detection sensor module into the two clips on the holder. Ensure that the module is secured in place.

   2. After the module is secured, route the cable through the cable clips to keep tidy for later cable routing arrangements.

   Note

   For liquid detection sensor module working status, see LED on the leak detection sensor module.
7. Connect the pump cable and leak detection cable of the LACM to the connectors on the processor board. See The Lenovo Neptune Liquid to Air Module.