Federal Signal Corporation 2001-130, Installation And Operating Instructions Manual

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11
B. Collector Ring Brush Replacement.
1. Remove the cover from the top of
the collector housing.
PLUG COVER
WIRES
291302C
Figure 4-3. Collector Ring Housing
2. Note the wiring location before
removing the wires. (See Figure 4-3 ).
3. Remove the four bolts on the side of
the collector housing assembly (see Figure
4-4 ) and remove the brush assembly. Note:
Press down on brush assembly while
removing the four bolts. Brush assembly is
under spring tension while in position.
BRUSH
ASSEMBLY
TERMINAL
BLOCK
BOLTS(4)
291303D
PLUG
Figure 4-4. Installation/Removal Brush Assy.
4. Remove lead wire from brush
holder. Remove the worn brush from the
brush holder in the brush holder plate. (See
Figure 4-5 ).
BRUSH
HOLDER
BRUSH
291304C
Figure 4-5. Brush Holder Assy.
5. Insert the replacement brush into
the brush holder. Connect the lead wires to
the brush holder.
C. Collector Ring Removal .
1. Remove the brush assembly as
described above.
2. Disconnect the three wires from the
terminal block (TB5) inside the rotator
housing and begin feeding wires up into the
siren shaft (see
Figure 4-2 ).
3. Federal suggests that the rotator
drive band be loosened, as described in
paragraph 4-4.B., to rotate the siren during
removal of the collector ringbolts.
CAUTION
To prevent damage to the cover
assembly, use a piece of wire to secure
the cover in an open position before
removing the housing’s back panel.
4. Remove the back panel to expose
the small plug on the collector housing
assembly.
5. Remove the small plug.
6. Manually rotate the siren and
remove each of the four bolts that hold in the
collector rings (see
Figure 4-7 ). Access to
these bolts can be gained through the plug
opening.