Garmin Apollo CNX80, Руководство по установке

Страница: 39 / 168

Installation Procedures
Apollo CNX80 Installation Manual 560-0982-00 Rev D
2-9
2.6 E
QUIPMENT
M
OUNTING
The CNX80 is designed to mount in the avionics stack. The installation kit supplied with the CNX80
includes a mounting tube with a separate connector plate for ease of mounting, connections, and service of
the unit. Allow an additional one-inch clearance to the rear of the mounting frame for connectors and
cables. See Figure 2-3
for dimensions.
The CNX80 does not require external cooling; however, when mounting the CNX80, ensure that the fans at
the rear of the unit are not blocked. As with all electronic equipment, avoid locating the CNX80 near
sources that produce high levels of heat.
2.6.1 M
OUNTING
T
UBE
I
NSTALLATION
Use the dimensions shown in Figure 2-3 to prepare the mounting holes for the Apollo CNX80. You may
also use the CNX80 mounting tube itself as a template for drilling the mounting holes. Care must be taken
when installing the mounting tube to ensure you can properly insert and secure the unit. There must be a
minimum vertical spacing of 0.040 inches between units to prevent interference with the cam locking
mechanisms. Mounting tubes with clearance dimples help maintain the proper clearance. The mounting
tube must be installed with the clearance dimples pointing up.
2.6.1.1 Securing the Mounting Tube
Secure the mounting tube to the instrument panel structure using AN507 6-32 screws with a 100°
countersink head. It is recommended that the installer use eight screws, four on each side. The mating holes
in the instrument panel structure must also be countersunk to accept the screw head so that the screw head
is flush with the inside surface of the mounting tube. Take care that the mounting tube is not distorted when
it is attached to the instrument panel and structural supports. Shims may be necessary to properly install
the mounting tube. If the mounting tube is distorted out of square, the unit may either bind when being
inserted or the cam lock may not engage.
CAUTION
Failure to properly countersink the mounting holes will result in damage to the
CNX80. Mounting screw heads must not protrude into the mounting tube.
The front of the mounting tube should be flush to the instrument panel and allow sufficient clearance for
the back of the bezel of the CNX80 to mount flush to the mounting tube. Sufficient clearance must exist in
the instrument panel opening to allow ease of insertion and removal of the CNX80.
CAUTION
If the back of the CNX80 bezel does not mount flush to the mounting tube (within
0.020"), the connector may not engage fully.
2.6.1.2 Mounting Frame Assembly
The order of assembly of the mounting tube frame with connector plate and connectors is at the installer’s
preference or may be determined by how the installation is fit into the aircraft.
An illustration how to assemble the mounting tube is shown in Figure 2-6.