LBC3428_instal.manual
LBC 3428/00 Installation Manual
1. INTRODUCTION
These speakers 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. Ensure that appropriate stopping plugs are used to blank off unused gland entry points. Sealing compound should be applied to stopping plug threads to maintain the IP rating of the unit.
The LBC 3428/00 is mounted via 2 x Ø 7mm (Ø 0.28") fixing holes in the ‘u’ shaped stirrup/mounting bracket. If required, the unit can be initially placed via the Ø 13mm (0.51") central hole in the stirrup. The unit can be rotated to the required position and fixed via the two other holes. The fixing holes accept M6 screws or bolts. Bosch recommend the use of stainless steel screws.
The elevation of the unit can be adjusted by loosening the 2 x M6 screws which fasten the stirrup to the horn.
EN 2
The unit can then be adjusted by rotating to the required position and then tightening the M6 screws. The LBC 3428/00 should be positioned such that debris, dust or water cannot settle in the
Cable Termination
CAUTION: Before removing the cover assembly, ensure that the power to the unit is isolated. Unscrew the 2 off screws holding the cover to the unit.
Remove to gain access to the interior of the enclosure. Cable termination should be in accordance with specifications applying to the application.
Bosch recommend that all cables and cores should be fully identified. Ensure that appropriate cable glands are used and that the assembly is shrouded and correctly earthed. All cable glands should be of an equivalent IP rating to that of the speaker.
In order to maintain the IP rating of the unit, the cable glands should be sealed to the unit using a sealing washer
(if possible) and sealing compound. Once termination is complete, carefully push the cover back onto the unit, avoiding damage to the seal. Tighten the 2 off cover screws evenly, to ensure correct sealing.
Bosch Security Systems July 2003
