IBM 1611-16E, Installation Manual

Page: 55 / 84

4. Tighten the retaining screw on the fan module. Torque the screw to
approximately 0.5 Nm (4 inch-pounds).
Removing the 1U air duct option
To remove the 1U air duct option from a 19" rack, complete the following steps.
1. Loosen the two M4 thumbscrews securing the air duct unit to the air duct
brackets.
M4
thumbscrews
2. Slide the air duct unit out of the rack.
To return the component to customer service for replacement, see Appendix A,
“Getting help and technical assistance,” on page 55, to help you gather all the
required information that is necessary to return a component. After you remove the
component, securely pack the component for shipping.
For instructions to replace the air duct, see “Installing the 1U air duct option in a
rack” on page 25.
Removing and replacing the main RackSwitch chassis unit
When replacing a RackSwitch chassis unit, all internal component must also be
removed from the chassis and replaced in the new chassis. The RackSwitch
operates with one or two active power supplies, up to four fan modules, and an
optional air duct unit.
Chapter 3. Removing and replacing the RackSwitch and components
39