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RB-6 L-801A (Airport) Rotating Beacon (Export)
Cleaning Lenses
Cleaning Head Assembly
Cleaning Slip Rings and
Brushes
Lubricating Parts
2001 Siemens Airfield Solutions, Incorporated
All rights reserved
e) Install the brush bracket assembly.
f)
Use a customer-supplied spring scale attached to the head of the
screws (5) to check the tension of the brush (1) against the shaft
assembly (3). The brushes must have a tension of 14 + 2 oz
against the shaft. The spring scale is a Linear Barrel Scale (0-16
oz in 1/4 oz increments).
g) If too much tension exists, release tension by bending the brush
bracket (7).
h) Place a new bracket on the screw, install the drive pin on the
bracket, and use a 60/40 solder to secure the brass hex nut to the
screw and bracket. Then reinstall the wire, lockwasher, and outer
hex nut on the screw.
Clean lenses periodically with alcohol or glass cleaner and soft cloth.
Wipe dry with a clean soft cloth.
Remove dust and dirt from the head assembly using a soft cloth or sponge
with soap and water.
To clean slip rings and brushes, follow the guidelines below.
•
Clean the slip rings and brushes with a cloth moistened with an
appropriate solvent that will not leave a film or residue.
•
If sparking or pitting occurs, smooth rings with 420 sandpaper. Avoid
sanding, if possible. Sanding produces a raw copper surface that
shortens brush life.
•
Replace brushes showing excessive wear.
NOTE: It is recommended that all three brushes be replaced at the same
time to provide even wear.
WARNING: If the brushes are worn down to the brush
bracket, the bracket may damage the slip rings. Replace the
brushes worn to 1/8 inch (3.175 mm) of the bracket edge.
All moving parts are permanently lubricated and will not require further
attention.
96A0221B
Issued 5/01
Maintenance
Page 4-6
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