Preventive Maintenance Actions; Preventive Actions - GE Reason RT430 Technical Manual

Chapter 4 – Installation
5

Preventive Maintenance Actions

Preventive Actions

RT430/434

The unit will perform a self-test procedure, and the Alarm indicator will remain
lit.

At the end of the self-test, the equipment will perform initialization of the GNSS
receiver. At the end of approximately one minute, the Alarm indicator will go out
and information will be shown in the equipment's display. If Alarm indicator
remains on, the unit will not be operating and it will require attention by the
user.

To turn off the unit, switch off the external switch or circuit breaker. The unit will
record the time, date, satellite orbits parameters, and internal oscillators drift
estimates in non-volatile memory to improve accuracy and reduce the time to
synchronize with satellites in the next energizing process. Also, all indicators
LEDs will turn off.
In case the unit does not behave in a way here described, carefully check all power
and signal connections. See Maintenance chapter for additional suggestion for
problem diagnosis.
In view of the critical nature of the application, GE products should be checked at
regular intervals to confirm they are operating correctly. GE products are designed
for a life in excess of 20 years.
The devices are self-supervising and so require less maintenance than earlier designs
of protection devices. Most problems will result in an alarm, indicating that remedial
action should be taken. However, some periodic tests should be carried out to ensure
that they are functioning correctly and that the external wiring is intact.
It is the responsibility of the customer to define the interval between maintenance
periods. If your organization has a Preventative Maintenance Policy, the
recommended product checks should be included in the regular program.
Maintenance periods depend on many factors, such as:

The operating environment;

The accessibility of the site;

The amount of available manpower;

The importance of the installation in the power system;

The consequences of failure.
For optimum performance of Reason RT430/434, perform the following preventive
maintenance procedures and actions:
Keep temperature and humidity at adequate levels inside the panel. The American
Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE)
recommends operating network equipment within the following ranges of
temperature and relative humidity (see the ASSHRAE TC9.9 "2011 Thermal Guidelines
for Data Processing Environments – Expanded Data Center Classes and Usage
Guidance").

Temperature within 18° C to 27° C (64.4° F to 80.6° F)

Relative humidity less than 60%

Dew point within the range of 5.5° C to 15° C (41.9° F to 59.0° F)
RT430/434
37