888-2408-002 5-3
WARNING: Disconnect primary power prior to servicing.
Maintenance and Alignment
5.2.3 Cleaning
Proper airflow is essential in keeping the transmitter in top working condition. If
outside air is brought into the building it should be well filtered to keep dirt out of
the building and the transmitter.
5.2.3.1 Module cleaning
The heatsinks on the modules are high efficiency, and therefore do not have large
openings for airflow and will tend to collect dirt over time. The modules should be
cleaned with compressed air on a schedule to be determined on site, depending on
the air system, filtering, humidity etc... (at least once a year). This determination can
be made either by visual inspection or by monitoring the module temperatures in the
Diagnostics Display.
!
WARNING:
THE PA MODULES ARE DESIGNED TO HANDLE VERY HIGH TEMPERATURES
AND MAY BE EXTREMELY HOT. DO NOT TOUCH THE MODULES WITH BARE
HANDS AFTER THE TRANSMITTER HAS BEEN RUNNING, ESPECIALLY IN HIGH
AMBIENT TEMPERATURE ENVIRONMENTS.
To locate the PA Temperature Monitoring press [METERING, C,A, then select the
desired Z-Plane]. Keeping a regular log of the PA temperatures versus Ambient
temperature will give a quick indication of a possible problem or that cleaning is
necessary. To check the ambient temperature reading press [METERING, C,D,B].
5.2.3.2 Cleaning the Air Filter
The indication as to when to clean or replace the air filter is basically the same as
mentioned in the previous paragraphs, mainly with the airflow indicator, but
temperatures and/or a visual inspection would also suffice. To monitor Airflow
press [METERING D,B].
5.2.3.3 Cleaning the Power Supply
The power supply can either be cleaned with a vacuum cleaner or compressed air or
both. For example, the rectifier heatsinks on top of the transformers should be
cleaned with compressed air, then after the dust settles, the rest of the compartment
vacuumed. Be very careful when moving cables to clean. Anytime a cable or wire is
moved, there is the possibility of breakage or open connections. Therefore cables
should always be moved as little as possible.
5.3 Blower Motor Maintenance
Current transmitter models use GE brand motors which have sealed bearings with
no grease fittings, and require no lubrication.
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