Bosch LBC 3428/00
Contents
1. MOUNTING STIRRUP EN 3 However if abnormal or unusual environmental conditions occur due to plant damage or accident etc then visual inspection is recommended If a fault should occur it is recommended that the unit be returned to Bosch for repair COVER SCREWS MILLIMETRES Bosch Security Systems July 2003 LBC3428 instal manual 05 09 2003 10 17 di 4 LBC 3428 00 Installation Manual EN 4 WIRING DIAGRAM TRANSFORMER TAPPINGS POWER COMMON PHASE 15 0W RD R i Zs PQ rok RR NR 4 Up D NN Yj Lp ID ZG pt y Ti A VA ML Numbers on Terminal Label are in pairs to facilitate loop in loop out option Terminals are linked via PCB tracking www boschsecuritysystems com 9498 974 31912 Printed in the UK Updated August 2003 Data subject to change without notice2. LBC3428 instal manual 05 09 2003 10 17 di 1 Horn Loudspeaker Security Systems Installation Manual EN LBC 3428 00 LBC3428 instal manual 05 09 2003 10 17 di 2 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 reguirements 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 7mm 0 28 fixing holes in the uv shaped stirrup mounting bracket If required the unit can be initially placed via the 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 Bosch Security Systems July 2003 EN 2 The unit can then be adjusted by rotating to the required position and then tightening the M6 screws The LBC 3
3. 428 00 should be positioned such that debris dust or water cannot settle in the re entrant horn 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 LBC3428 instal manual 05 09 2003 torn Ee LBC 3428 00 Installation Manual 3 OPERATION The unit is powered directly Different sound levels can be obtained by selecting the transformer tappings in the unit 4 MAINTENANCE During the working life of the unit little or no maintenance is required GENERAL ARRANGEMENT CABLE ENTRIES MOUNTING HOLE Zi3 l MOUNTING HOLES GTA 2 OFF POS 2A943 DIMENSIONS IN ALL
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