Справочник Пользователя для ADC Telecommunications Inc. DVLRCS800
ADCP-75-124 • Issue B • April 2002 • Section 5: Maintenance
Page 5-14
©
©
2002, ADC Telecommunications, Inc.
5.1
Scheduled Maintenance
interval.
Refer to the section specified in the table for the required maintenance or test
procedure.
5.2
Remote Unit Cabinet Filter Cleaning Procedure
The
RU cabinet filter cleans the RU intake air before it enters the cabinet. The filter should be
cleaned
approximately once per year and more often in extremely dirty environments. If the
cabinet
temperature gradually rises over a long period of time and there are no fan failures, it is
possible
that the filter is dirty and requires cleaning. Use the following procedure to clean the
RU
cabinet filter:
1. Open
.
2. Loosen
the hex nuts that secure the left and right filter brackets to the cabinet door.
3. Pull
the filter upward and away from the cabinet door. Be careful not to damage the gasket
that
provides the air seal.
Table 5-9. Scheduled Maintenance
INTERVAL
ITEM
REQUIREMENT
1
month
Battery*
Check
float voltage.
Check
system ambient temperature.
Check
system float current.
6
months
Battery*
Perform
1 month scheduled maintenance tasks.
Check
individual battery terminal temperature.
Check
individual battery float voltages.
12
months
Battery
*
RU
cabinet filter**
Perform
1 and 6 month scheduled maintenance tasks
Complete
detailed physical inspection.
Re-torque
terminal connections.
Perform
general system maintenance.
Perform
cabinet maintenance.
Remove
and clean the RU cabinet filter. Refer to
for
the required procedure.
24
months
Battery*
Perform
1, 6, and 24 month scheduled maintenance tasks.
Test
battery system for rated capacity.
60
months
HU
Fans
STM
Fan
LPA
Fans
Remove
and replace the cooling fans in the HU, STM, and
LPA.
Refer to specified section for the required procedures:
HU
,
,
and LPA see
*
Refer to the PRC-SERIES OPERATING AND FIELD SERVICE MANUAL (provided with the
back-up
battery system) for the specified battery maintenance procedures.
**Though
it is not recommended that the RU be installed in a salt-air environment, if done so, clean the
cabinet
filter on a monthly basis instead of on a 12 month basis. In addition, the RU should be
inspected
for corrosion due to salt, particularly near the fans and around the connectors. The MTBF of
the
RU may be impacted if the RU is exposed to salt-air.