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TM293 MEDC DB3BM UL Technical Manual
SOUNDER/HORN – DB3BM UL TM293.A August 2022 www.eaton.com
5.0 MAINTENANCE
During the working life of the unit, it should require
little maintenance however; if abnormal or unusual
environmental conditions occur due to plant damage or
accident etc., then visual inspection is recommended.
WARNING! – The front driver cover of the unit, situated
underneath the thermoplastic main flare, which encloses
the loudspeaker driver shall not be opened as it is not for
field installation or maintenance use.
See below diagram for details of the flameproof joints
found in the unit. WARNING! – The flameproof joints
details below are not intended to be repaired.
Corrosion inhibiting grease, such as petrolatum or soap-
thickened mineral oils, may be applied to flameproof joint
surfaces before assembly. The grease, if applied, shall be
of a type that does not harden because of ageing, does
not contain an evaporating solvent, and does not cause
corrosion of the joint surfaces. Verification of suitability
shall be in accordance with the grease manufacturer’s
specifications.
Aluminium Alloy cover joints must be cleaned before
replacing cover
If the unit requires cleaning, the only clean exterior with
a damp cloth to avoid electro-static charge build up.
If a unit fault should occur, then the unit can be repaired
by MEDC
If you acquired a significant quantity of units, then it is
recommended that spares are also made available. It
should be noted that if damaged the external thermoplastic
horn may be replaced as a complete part or the snap in end
cap may be replaced separately. Please discuss your spares
requirements with the Technical Sales Engineers at Eaton
MEDC.
Snap in end cap
can be replaced
as a spare part,
see below
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