ViaSat Series 8345, Installation Manual

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Chapter 4 - Maintenance
4.2.2 Monthly Maintenance
NOTE
If it has been some time since electrical power was applied to
the actuator motors, go to the antenna and remove all
electrical power, manually release the motor brake and rotate
motor shaft. Once it is determined that the brake will release
and the shaft will turn freely, then apply electrical power to
the motors.
Apply electrical power, as necessary, to azimuth actuator,
elevation actuator, and polarization drive assembly. Run each
axis for two or three minutes in the normal operating sector.
Inspect drain holes in actuator motors; holes should be open
for condensation drainage. Observe brake operation if
applicable.
4.2.3 Bi-Monthly Maintenance
Perform the following procedures at least once every two months.
WARNING
Remove electrical power from antenna system prior to
performing bi-monthly maintenance.
1. Remove LSR covers, inspect mechanical operation, and check for condensation
accumulation. If moisture exists, open all drain holes. Apply a spray-type
lubricant (WD-40 or equivalent) to all moving parts. Secure covers.
2. Remove hub cover. Inspect polarization drive assembly, apply a spray-type
lubricant (WD-40 or equivalent) to chain and drive sprocket. Inspect the feed
chain for correct tension and lubricate if necessary with the spray-type lubricant.
Ensure that feed rollers are all functional, inspect flexible transmit waveguide
jumpers, if applicable, for fatigue, check limit switch operation. Inspect feed
window for damage, replace window as required. Secure cover.
3. Inspect all cotter pins and other devices used as pin retainers. Replace if
damages or corroded; tighten if loose.
4. Inspect mount, reflector, and feed, for loose or missing fasteners and replace as
required.
42S199F 4-2