User's Manual Part 3

Maintenance and Servicing - 151 -
Affinity® LBD-200C-N1 Transmitter
Product Manual
23.4 Schedules Maintenance
Use this maintenance schedule as a guide for the Affinity® transmitter. Maintenance procedures
may be performed more often if environmental conditions are not typical. Variables such as dirt,
heat and power-line variations, which may degrade the transmitter operation, should be
monitored and accounted for during any maintenance schedule. Keep the transmitter and the
surrounding area clean. The transmitter can fail if operated in an overheated and/or dirty
environment. Parts with accumulated dirt will not be as efficient and may prematurely fail. Dirty
fan assemblies reduce the amount of cooling airflow to the transmitter causing components to
overheat. It is important to note that all scheduled maintenance activity should be flexible
enough to accommodate any operational variance.
23.4.1 Monthly Maintenance
Perform the following checks on a monthly basis:
Operating Temperatures
During transmitter operation, and using a temperature probe, test the transmission line
components, waveguide, and other exposed components for abnormal temperature fluctuations.
Unusual hot spots on these components typically indicate a problem.
Visual Inspection
Visually examine the entire transmitter system. Look for loose connections, damaged
components, (discolored, charred, melted, broken leads) and dirty areas. Tighten all loose
connections; replace all damaged components, and clean dirty areas. Investigate and record
the cause for any of these issues.
Cooling System
Verify that all system cooling air displacement fans and air-conditioning units are in working
order. Ensure all fans are clean and unobstructed.
Cleaning
It is important to keep the Affinity® transmitter and related support equipment clean. For
example, a dirty air filter reduces cooling airflow and can cause a thermal runaway problem
inside the transmitter cabinets. Dirt makes a low-resistance path across insulators and wiring.
WARNING
Perform these procedures and checks only when
the voltage is removed from the transmitter.
Use a vacuum cleaner, small brushes, or clean lint-free cloths with denatured alcohol or mild-
detergent cleaning solutions.
Do not use compressed air. Compressed air blows dirt around