VS1 Operations and Maintenance Manual Routine maintenance
Issue 3.1 2013-10-01 Page 3-1
Section 3: Routine maintenance
This section provides instructions for performing routine maintenance on the VS1 transmitter. This
section includes the following topics:
• Scheduled maintenance
– Cleaning fan filters
– Checking hardware - see page 3-2
– Battery replacement - see page 3-2
• Replacing a damaged air filter - see page 3-2
• Performing on-air checks - see page 3-4
• Replacing the exciter/control PWB battery - see page 3-7
• Inspecting lightning protection systems - see page 3-8
Scheduled maintenance
Scheduled maintenance consists of performing a visual inspection of the VS1 at scheduled intervals.
The recommended minimum time between scheduled maintenance visits is three months. Local
operating and environmental conditions may dictate more frequent visits, while in remote sites, less
frequent visits may be acceptable. Experience and system reliability will determine the most practical
schedule for a specific installation.
Cleaning fan filters
Remove the air filter (see Figure 3.1 on page 3-3) by removing the front panel grill section that is
secured with four M4 hex screws. Use the HY93 hex tool provided in the ancillary kit to loosen the
screws just enough to allow removal of the front panel grill. Remove the PVC retaining plate and then
the filter media from the grill section, rinse it with water, then re-install the air filter. If an air filter
becomes damaged, replace it as soon as possible. See “Replacing a damaged air filter” on page 3-2.
Note:
A site located in a dirty area using open-air cooling requires more extensive cleaning than a site
located in a clean area using closed-air cooling.
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