Comtech EF Data CDM-425 Installation And Operation Manual page 676

Step Task
4
Use the screwdriver and pliers, as needed, to install the fan
(CEFD P/N PL-0000449) and fan guard (CEFD P/N
FN/FGDC12V01) securely into the chassis with the provided
mounting hardware (4X CEFD P/N HW/4-40X3/4PH 4-40 x 3/4
pan head screws and 4X CEFD P/N HW/440HXNUTLOC 4-40
locking hex nuts) at the designated location.
IMPORTANT NOTE: Refer to the arrow icons imprinted on the
fan housing when installing the fan, to ensure that:
The air flow is directed into the chassis during operation
•
and
The fan power cable is routed towards the power
•
connector on the modem's framing board.
Appendix J J–12
CDM-425 Advanced Satellite Modem
Revision 0
MN-CDM-425