MEDC DB12 Sounder - Manual (Page 2)

01/02 © MEDC 2002
1. INTRODUCTION
These sounder units have been designed for use in harsh environmental
conditions.
2. INSTALLATION
General
When installing and operating electrical equipment, requirements for selection,
installation and operation should be referred to.
Additional national and/or local requirements may apply.
Ensure that all nuts, bolts and fixings are secure.
The DB12 Sounder should be positioned using the two available fixing holes in
the base. MEDC recommend that stainless steel nuts and bolts be used, if the
environment is corrosive.
The Sounder will operate in any attitude – from horizontal to vertical. However, it
is important to note that the alignment of the Sounder should ensure that:-
– Dust or debris cannot lodge or settle in the cover apertures.
– Water from hoses, jets or rain cannot settle in the cover apertures.
Cable Termination
CAUTION: Before removing the cover assembly, ensure that the power to the
unit is isolated.
Remove the cover/horn of the Sounder by unscrewing the 3 fixing screws, and
pulling the cover/horn gently away from the base.
Cable termination should be in accordance with specifications applying to the
application. MEDC recommend that all cables and cores should be fully identi-
fied.
Ensure that only the correct cable glands are used and that the assembly is
shrouded and correctly earthed.
All cable glands should be of an equivalent NEMA/IP rating to that of the
sounder.
In order to maintain the NEMA/IP rating of the unit, the cable glands should be
sealed to the unit using a suitable sealing washer.
Once termination is complete, replacing the cover/horn is a reverse process of
the removal, but care should be ataken to ensure that the seal is securely located
in its groove during re-assembly.