LBC3437/LBC3438_instal.manual 05-09-2003 10:18 Page 1
Horn Loudspeaker
Installation Manual
EN LBC 3437/00
LBC 3438/00
LBC3437/LBC3438_instal.manual 05-09-2003 10:18 Page 2
LBC 3437/00, LBC 3438/00 | Installation Manual |
EN | 2 |
1.0Installation
1.1General
When installing and operating explosionprotected electrical equipment, requirements for selection, installation and operation (e.g. IEC 60079-14) must be observed.
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 only the correct certified
glands are used and that the assembly is shrouded and correctly earthed. A sealing washer must be fitted to maintain the IP rating. Ensure that all nuts, bolts and fixings are secure.
1.2 Mounting the Unit
The unit mounts via a ‘u’ shaped strap. This strap is supplied loose and is attached to the speaker with the 2 off M6 x 20mm screws and washers provided. The fixing centres of the strap are indicated on the attached drawing
(see Figure 2). When fixed in position, the unit’s alignment can be adjusted by loosening the two M6 screws. The speaker can then be adjusted to the required position and the screws tightened. The speaker should be positioned such that dust, debris or water cannot settle in the re-entrant horn.
1.3To Remove End Cover
Remove the 6 off M5 Cover screws.
1.4To Fit Gland
To fit the gland supplied refer to the fitting instructions (see figure 1).
2.0 Operation & Wiring
The speaker is available in 2 standard wattage ratings (15W and 25W). Different sound levels can be obtained by selecting the transformer tappings in the unit (see figure 3).
3.0 Maintenance
During the working life of the unit, it should require little or no maintenance. However, if abnormal or unusual environmental conditions occur due to plant damage or accident etc, then visual inspection is recommended.
If a unit fault should occur, then the unit should be returned to Bosch for repair/replacement.
4.0 Certification
Certification to:- EN50014:1997, EN50018:1994 15W: EExd IICT5 25W: EExd IICT4
ATEX Certification No:
BAS00ATEX2097X
Bosch Security Systems | July 2003
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