Effectiveness of explosion-proof enclosure must be maintained. Use caution to
avoid damaging machined surfaces.
Substitution of components may impair suitability for Class I, Division 2, and
Class I, Zone 2.
A. Periodically check this device to verify that there are no foreign substances
in, or in front of, the speaker, which will reduce its effectiveness.
B. Testing should be periodically performed. Refer to NFPA 720, local Fire Codes
and the authority having jurisdiction for information.
C. In the event a volume adjustment or other reair is required, be sure to refer
to the Safety Message For Maintenance Personnel before proceeding.
VI. SERVICE.
Unauthorized repair/servicing of the unit may result in degradation of perfor-
mance and/or property damage, serious injury, or death to you or others. If a
malfunctioning unit is encountered, do not attempt any field repair/retrofit of
parts.
Federal Signal will service your equipment or provide technical assistance with
any problems that cannot be handled locally.
Any units returned to Federal Signal for service, inspection, or repair must be
accompanied by a Return Material Authorization. This R.M.A. can be obtained from the
local Distributor or Manufacturer's Representative.
At this time a brief explanation of the service requested or the nature of the mal-
function
should be given.
Address all communications and shipments to:
FEDERAL SIGNAL CORPORATION
Electrical Products Division
Service Department
2645 Federal Signal Drive
University Park, IL 60466-3195
EXPLOSION HAZARD
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