Tait TB9100, Installation And Operation Manual

Page: 83 / 144

TB9100 Installation and Operation Manual Replacing Modules 83
© Tait Electronics Limited May 2006
that the two inner mounting tabs
1)
fit over the inner tabs of the
PMU fan. Ensure that all the power wires are secured under the
retaining hooks
1!
and are not crimped.
c. Refit the fours screws labeled
b
.
5. Carry out the instructions in “Final Reassembly” on page 88 .
Important
You must connect the fans to the correct sockets on the fan
contact board. If the fan connections are reversed, the
wrong fan will be activated when a module needs cooling.
The module may then fold back and shut down. When you
power-up the TB9100, check that the PMU fan runs first,
followed by the PA fan. Each fan will run for about five
seconds.
Important
You must refit the correct duct to the PA fan. There are
several small but important differences between the duct for
a 5W or 50W PA and the duct for a 100W PA. Refer to
Figure 7.3 on page 89 for more details.