User's Manual

Table Of Contents
DRAFT 4
TB9400 Installation and Operation Manual Replacing Modules 103
© Tait Electronics Limited September 2011
Refitting 1. If the original fan was fitted with spacers j, refit these spacers to the
replacement fan.
2. Fit the replacement fan into the duct, routing the power wires neatly
around the body of the fan to the slot in the side of the duct, as shown
in Figure 8.1.
3. Refit the four screws securing the fan into the duct. Do not
overtighten these screws or you may distort the fan body.
4. PMU Fan
a. Refit the PMU fan duct assembly onto its mounting bosses. Note
that the two mounting tabs nearest the center fan fit over the
bosses.
b. Refit the two screws labeled
i.
c. Plug the fan into the front panel board
h.
d. Refit the 100 W PA or reciter and PA 2 fan duct as described
below.
5. 100 W PA Fan
a. Refit the PA fan duct assembly onto its mounting bosses. Note
that the two mounting tabs nearest the PMU fan fit over the tabs
of the PMU fan duct.
b. Refit the fours screws labeled
g.
c. Plug the fan into the front panel board
f.
6. Reciter and 50 W PA Fan
a. Refit the fan duct assembly onto its mounting bosses. When
refitting the duct for reciter and PA 2, note that the two mounting
tabs nearest the PMU fan fit over the tabs of the PMU fan duct.
b. Refit the fours screws labeled
d or e.
c. Plug the fan into the front panel board (
b or c ).
7. Carry out the instructions in “Final Reassembly” on page 107.
Important You must connect the fans to the correct sockets on the
front panel board, as shown in Figure 8.1. If the fan con-
nections are changed, the wrong fan will be activated when
a module needs cooling. The module may then fold back
or shut down.