NFS2-3030/E Installation Manual — P/N 52544:N1 07/18/2014
25
Attaching the CPU & Chassis
Installation
The NFS2-3030 mounts in the upper half-chassis. (Refer to Figure 3.6 and Figure 3.7.) If first
mounting an optional LCM-320/LEM-320 pair behind the FACP, refer to Section 3.8.2, “Audio
Applications with Chassis CA-2”. Mount the NFS2-3030 to its half-chassis without removing the
half-chassis from the back plate. Refer to “Memory-Backup Battery” on page 25 for removal of
insulator.
Figure 3.7 Mounting the NFS2-3030 onto the CA-2 Half-chassis
Refer to the DVC Manual for installation of the DVC, microphone and handset into the CA-2.
3.5.3 Mounting Chassis in Backbox
CHS-M3
Align chassis-mounting slots with chassis-mounting studs (see Figure 3.1 and Figure 3.5 for
locations). Secure with nut & lock-washer provided with chassis.
CA-2
Install all equipment into the CA-2 and attach to the CA-2 backplate before the chassis assembly is
attached to the backbox. Align four backplate-mounting slots with backbox’s chassis-mounting
studs. Secure with nut and lock-washer provided with chassis. For details, see the instructions in
the CA-2 Installation Document.
3.5.4 Memory-Backup Battery
The lithium battery on the CPU provides
backup of the CPU’s on-board memory
during power loss. The CPU ships with an
insulator to prevent the battery from
discharging. To preserve the battery, the
insulating tube should be left in place as
long as possible before applying AC
power.
If the insulator is not removed before
applying AC power, the control panel will
show a trouble situation.
This battery’s shelf-life should exceed 10 years, but if for some reason it fails, the control panel will
show a trouble when powered up. To replace the lithium battery:
1.
Make a full backup of all system settings to prevent loss of all programming data.
2.
Disconnect all power sources.
Fasten with four
screws as indicated.
NFS2-3030
Upper half-chassis
Slide the tabs at the bottom of the control
panel into the inner slot at the bottom of the
chassis. (See the
DVC Manual
for details)
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Install the 3
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Lift clip gently while
removing battery
Dotted line indicates
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