Ericsson MOBITEX BRU3 Safety Instructions
Safety Instructions
Contents
1 Introduction .................................................................................................3
2 Safety Instructions.......................................................................................4
2.1 Definition of Expressions.................................................................5
3 IT Power System .........................................................................................6
4 Precautions .................................................................................................. 7
4.1 High Voltage....................................................................................7
4.2 Grounding ........................................................................................7
4.3 RF Exposure Assessment by Calculation ........................................7
5 Poisonous Substances..................................................................................9
5.1 Nickel Cadmium (NiCd)............................. ...... ............................ ...9
5.1.1 Locating and Removing the Battery Pack ............................9
5.2 Beryllium Oxide (BeO)..................................................................11
5.2.1 Existence of Beryllium Oxide in BRU3 .............................11
5.2.2 Grade of Toxicity ................................................................12
5.2.3 Symptoms of Poisoning......................................................1 2
5.2.4 First Aid..............................................................................12
5.2.5 Handling Components Containing Beryllium Oxide..........12
5.2.6 End of Life Treatment.........................................................13
5.2.7 Labels..................................................................................13
5.2.8 Locating and Removing the Beryllium Oxide Component 14
5.3 Electro Static Discharge (ESD)......................................................2 1
6 Rules and Requirements - Europe.............................................................22
6.1 General Safety Statements .............................................................22
6.2 Statements for Connection to Telephone Networks in the UK......23
7 Rules and Requirements - USA/Canada....................................................24
7.1 FCC - Rules and Requirements......................................................24
7.2 BRU3 Classification.......................................................................24
7.3 BRU3 Interference.........................................................................24
7.4 BRU3 Changes or Modifications...................................................25
BRU3 MANUAL, Doc.no: b3saf_en Uen Rev PH1, 2003-10-20
BRU3 MANUAL
7.5 Government Requirements and Equipment Return........................25
7.5.1 USA.....................................................................................25
7.5.2 Canada.................................................................................27
8 Electrical Safety .........................................................................................29
8.1 Safety Instructions ..........................................................................29
The contents of this document are subject to revision without notice due to continued progress in methodology,
design and manufacturing.
Ericsson shall have no liability for any errors or damages of any kind resulting from the use of this document.
BRU3 MANUAL, Doc.no: b3saf_en Uen Rev PH1, 2003-10-20
SAFETY INSTRUCTIONS 3 (30)
1 Introduction
This section contains Safety Instructions for handling the MOBITEX Base
Radio Unit 3 (BRU3) during installa tion and maintenance work.
Please read the Safety Instructions before starting any kind of installation or
maintenance work.
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2 Safety Instructions
Note! Reduce the risk of accidents by studying all the instructions
carefully before starting work. If questions arise regarding the
safety instructions, contact your supervisor or the local Ericsson
company.
Read and follow all warning notices and instructions found on the product or
included in the BRU3 manual. Ericsson takes no responsibility if the labels have
disappeared from a BRU3 due to accident or age.
Where local regulations exist, these are to be followed. The safety information
in this manual is a supplement to local regulation s.
It is the responsibility of the local project manager to make certain that local
regulations are known and followed.
The relevant manual (including this safety information) and specific
instructions supplied by Ericsson must be followed in any work performed on
the Ericsson prod ucts or sys tems. Suf fi cient kno wledge of En glish or of any of
the other languages in which the manuals or instructions are printed is
necessary.
The safety information in the relevant manuals presupposes that any person
performing work on Ericsson pr oducts or s ystems has the necessary education,
training and competence required in order to perform that work correctly. For
certain work, additional training or special training may be required. For more
precise information on the amount and content of the general and/or special
training required for work on Ericsson products or systems, please contact the
supervisor or the local Ericsson company.
The BRU3 is intended to be used with a three-wire mains connection plug - a
plug which has a grounding pin. This is a safety feature. Grounding of the
BRU3 is vital to ensure safe operation. Do not defeat the purpose of the
groundi ng type pl ug by modifying the plug or using an adapter.
The slots and openings in the bottom of the BRU3 are provided for ventilation.
To ensure reliable operation of the product and to protect it from overheating,
these slots and openings must not be blocked or covered.
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SAFETY INSTRUCTIONS 5 (30)
Make sure that the FE Power Supply cable is not squeezed by anything and d o
not place the cable in such a way that there is a risk of people treading on it.
General purpose cables are provided with the BRU3. The provision of special
cables, which may be required by a regulatory inspection authority for the
installation site, is the responsibility of the customer.
When installed in the final configuration, the BR U3 must comply with the
applicable safety standards and regulatory requirements of the country in which
it is installed. If necessary, consult with the appropriate regulatory agencies and
inspection authorities to ensure complian ce.
2.1 Definition of Expressions
The following definitions of hazard degree are used in this document:
DANGER!
Expresses a hazard that, if neglected, could be either fatal or cause life-long
injuries to a human being, and/or destroy the equipment.
WARNING!
Expresses a hazard that, if neglected, could cause severe injuries to a human
being, a nd/or severe damage to the equipment.
CAUTION!
Expresses a hazard that, if neglected, could cause injuries to a human being, or
damage to equipment.
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3IT Power System
The BRU3 is not intended for use in an “IT power distribution system”. Type
approval testing in accordance with EN60950, UL1950 and C SA 22.2 No. 950
has been performed exclu ding IT-systems.
An IT power system is a pow er distribution sys tem having no direct con nection
to earth, only the exposed conductive parts of the electrical installation are
grounded.
Figure 1 Example of an IT power system.
Note! For more details on IT power distribution systems and test
procedures, please refer to the standard documents.
(Please note that IT Power distribution s ystems are not very widespread and the
abbreviation should not be confused with the well-known abbreviation for
Information Techno lo gy) .
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SAFETY INSTRUCTIONS 7 (30)
4 Precautions
4.1 High Voltage
DANGER!
The BRU3 is powered by 120 or 230V AC. During normal operation, live
terminals or components are not accessible. If the BRU3 front cover is open ed
during operation, for maintenance or commissioning purpos es, live terminals or
components are exposed.
4.2 Grounding
DANGER!
Grounding must be done bef ore the “MAIN SWITCH” on the FE Power Supply
Unit (F PU) is sw itched o n. Before operati on of the BRU3, ensure that the BRU3
is grounded in accordance with the Installation Instructions.
4.3 RF Exposure Assessment by Calculation
BRU3 base stations mounting instructions assume tower or roof mounting of
the connected antenna(s). Relevant distances for RF exposure in practice
exceed the range of the RF near-field range, thus MPE (not SAR) is addressed.
TX maximum output power is 6 W (37.8 dBm) at 100% du ty cycle.
According to formula [1] below, power density at R=1 m distance is
approximately 0. 048 mW / cm
antenna and ideal feed line (lossless).
2
<< 0.6 mW / cm2, assuming unity gain isotrop ic
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The product is mark eted without antenn a and it is to be instal led by professi onal
personnel. The installation manual contains a warning note requiring the
installation responsible to maintain an antenna safet y distan ce f rom general
public to meet RF exposure limits, considering feeder loss and antenna gain in
every case.
Above example shows margin to the commission’s exposure limit(
1
) in excess
of 10 dB. Any installation using higher than 10 dB combined antenna gain and
feeder loss arrangements and /or closer distances than 1 m to general public shall
require the installation responsible to prove RF exposure performance of his
installation meets applicable limits.
1
(
) Regulative reference: CFR 47, chapter 1, part 1, subpart I, item 1.1310,
Radio frequency radiation exposure limits,
table1 Limits for maximum permissible exposure
part (B) Limits for general ppopulation, uncontrolled exposure
Power density f [MHz] /1500 [mW / cm
2
] = 900 / 150 0 = 0.6 [mW / cm2]
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5 Poisonous Substances
5.1 Nickel Cadmium (NiCd)
WARNING!
The BRU3 contains a Nickel Cadmium battery pack.
• Handle the battery pack with care. Do not expose it to fire or crush it; the
battery pack may release toxic substances.
• Do not short-circuit. The battery pack may cause burns.
• There is danger of explosion if the battery pack is incorrectly replaced.
Replace the battery pack with the same type recommended by Ericsson.
• Return used batteries to Ericsson.
In the future the label in Figure 2 will mark the metallic shield covering the
battery pack inside the BRU3.
Ni-Cd Cd
Figure 2 This label is used to mark the battery pack.
5.1.1 Locating and Removing the Battery Pack
Suitable tools:
• A standard screwdriver
CAUTION!
Before any part of the BRU3 is dismantled, all connections to power supply
must be disconnected.
BRU3 MANUAL, Doc.no: b3saf_en Uen Rev PH1, 2003-10-20
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