20
Service and Maintenance
Models 2-120 and 2-240
Federal Signal www.fedsig.com
Service and Maintenance
Service or maintenance should be performed by qualified personnel familiar
with the siren, associated controls, and power sources being used.
The siren has moving parts and high operating currents that could cause
severe personal injury, electrocution, or death. Before servicing or maintaining,
ensure that remote activation cannot occur and disconnect power to the siren
and its controls.
Testing and Inspecting the Siren
Test the siren for proper operation at least once a month. A daily test at noon, curfew, or
other selected time is preferred. This not only enhances the usefulness of the siren, but
also instills public confidence in the reliability of the warning system.
In order to minimize the possibility of siren failure, inspection and maintenance at regular
intervals is desirable. Therefore, it is recommended to perform the following procedures
at least once a year. However, it may be necessary to increase the frequency of this
procedure if the siren is used frequently or if it is used in an extreme climate.
Inspecting the Motor Brushes
To inspect the motor brushes:
1.
Remove the housing and inspect the motor brushes. Replace the brushes if necessary.
2.
Inspect all electrical and mechanical connections. Make sure that all fasteners are
properly tightened.
3.
Inspect the siren installation to be sure that it is vertically oriented. Take corrective
action if a pole mounted installation is more than 5 degrees from vertical or a roof or
flat surface mount is more than 10 degrees from vertical to prevent lubrication losses
and excessive motor bearing wear.
4.
Examine all painted surfaces. Repaint as necessary.
Corrective Maintenance
Troubleshooting
The Troubleshooting Table (Table 5) is provided to assist repair personnel when
troubleshooting a siren malfunction. This section also includes diagrams that may be
helpful if the siren or control devices need the be repaired.
Moving parts could cause severe cuts or amputation. DO NOT rotate the
commutator by sticking your fingers in the stator ports and pushing on any
part of the rotor.
