Leroy-Somer LSA R 49.1 Instruction Manual

This manual is to be given to
the end user
LSA R 49.1
Air/air heat exchanger - AREP - 4 pole
ALTERNATORS - Ex II 3 G
1
132
474
Installation and maintenance
4081 en - 09.2006 / a

2
INSTALLATION AND MAINTENANCE
LSA R 49.1 Air/air heat exchanger
ALTERNATORS - Ex II 3 G
4081 en - 09.2006 / a
LEROY-SOMER
This manual concerns the alternator which
you have just purchased.
The latest addition to a whole new generation
of alternators, this range benefits from the
experience of the leading manufacturer
worldwide, using advanced technology and
incorporating strict quality control.
SAFETY MEASURES
Before using your machine for the first time, it is important to
read the whole of this installation and maintenance manual.
All necessary operations and interventions on this machine
must be performed by a qualified technician.
Our technical support service will be pleased to provide any
additional information you may require.
The various operations described in this manual are
accompanied by recommendations or symbols to alert the
user to potential risks of accidents. It is vital that you
understand and take notice of the following warning symbols.
Warning symbol for an operation capable of damaging or
destroying the machine or surrounding equipment.
Warning symbol for general danger to personnel.
Warning symbol for electrical danger to personnel.
Note: LEROY-SOMER reserves the right to modify the
characteristics of its products at any time in order to
incorporate the latest technological developments. The
information contained in this document may therefore be
changed without notice.
We wish to draw your attention to the contents
of this maintenance manual. By following
certain important points during installation,
use and servicing of your alternator, you can
look forward to many years of trouble-free
operation.
WARNING SYMBOLS
A set of self-adhesive stickers depicting the various warning
symbols is included with this maintenance manual. They
should be positioned as shown in the drawing below once the
machine has been fully installed.
Copyright 2005 : MOTEURS LEROY-SOMER
This document is the property of :
MOTEURS LEROY-SOMER
It may not be reproduced in any form without prior
authorization.
All brands and models have been registered and patents
applied for.
WARNING
WARNING

3
INSTALLATION AND MAINTENANCE
LSA R 49.1 Air/air heat exchanger
ALTERNATORS - Ex II 3 G
4081 en - 09.2006 / a
LEROY-SOMER
1 - RECEIPT
1.1 - Standards and safety measures ....................4
1.2 - Inspection ......................................................4
1.3 - Identification...................................................4
1.4 - Storage ..........................................................4
2 - TECHNICAL CHARACTERISTICS
2.1 - Electrical characteristics ................................5
2.2 - Mechanical characteristics.............................5
2.3 - Options .......... ...............................................5
2.4 - Excitation system...........................................5
3 - INSTALLATION
3.1 - Assembly .......................................................6
3.2 - Inspection prior to first use.............................6
3.3 - Terminal connection diagrams.......................7
3.4 - Internal coupling ............................................9
3.5 - Commissioning ............................................10
3.6 - Settings........................................................10
4 - SERVICING - MAINTENANCE
4.1 - Safety measures......................................... 11
4.2 - Regular maintenance.................................. 11
4.3 - Fault detection ............................................ 12
4.4 - Mechanical defects ..................................... 13
4.5 - Electrical faults............................................ 13
4.6 - Dismantling, reassembly............................. 15
4.7 - Table of characteristics............................... 16
5 - SPARE PARTS
5.1 - First maintenance parts .............................. 17
5.2 - Technical support service ........................... 17
5.3 - Exploded view............................................. 18
5.4 - Parts list ...................................................... 19

4
INSTALLATION AND MAINTENANCE
LSA R 49.1 Air/air heat exchanger
ALTERNATORS - Ex II 3 G
RECEIPT
4081 en - 09.2006 / a
LEROY-SOMER
1 - RECEIPT
1.1 - Standards and safety measures
The alternators LSAR 49.1 are compatible with :
- the recommendations of the
International Electrotechnical Commission
IEC 34-1, (EN 60034).
- the recommendations of the
International Standards Organisation ISO 8528.
- the European Community directive 89/336/EEC on
Electromagnetic Compatibility (EMC).
- the European Community directives
73/23/EEC and 93/68/EEC (Low Voltage Directive).
- standard Atex EN 60079-0, EN 60079-7, EN 60079-18.
They are destined for use in explosive atmospheres (directive
94/9/CE).
The ATEX labelling on these alternators is : EX II 3G - EX
em II T3 which implies that this material can only be used in
zone 2.
They are CE marked with regard to the LVD (Low Voltage
Directive) in their role as a machine component. A declaration
of incorporation can be supplied on request.
Before using your generator for the first time, read carefully
the contents of this installation and maintenance manual,
supplied with the machine. All operations performed on the
generator should be undertaken by qualified personnel with
specialist training in the commissioning, servicing and
maintenance of electrical and mechanical machinery. This
maintenance manual should be retained for the whole of the
machine’s life and be handed over with the contractual file.
The various operations described in this manual are
accompanied by recommendations or symbols to alert the
user to potential risks of accidents. It is vital that you
understand and take notice of the different warning symbols
used.
1.2 - Inspection
On receipt of your alternator, check that it has not suffered
any damage in transit. If there are obvious signs of knocks,
contact the transporter (you may able to claim on their
insurance) and after a visual check, turn the machine by hand
to detect any malfunction.
1.3 - Identification
The alternator is identified by means of a nameplate glued to
the frame.
Make sure that the nameplate on the machine conforms to
your order.
The machine name is defined according to various criteria
(see below).
Example of description for : LSA R 49.1 L6 C6/4 -
• LSA : name used in the PARTNER range
• R : air/air heat exchanger
• 49.1 : machine type
• L6 : model
• C : Excitation system (C : AREP / J : SHUNT)
• 6/4 : winding number / number of poles.
1.3.1 - Nameplate
So that you can identify your machine quickly and accurately,
we suggest you fill in its specifications on the nameplate
below.
1.4 - Storage
Prior to commissioning, machines should be stored :
- Away from humidity : in conditions of relative humidity of
more than 90%, the machine insulation can drop very rapidly,
to just above zero at around 100%; monitor the state of the
anti-rust protection on unpainted parts.
For storage over an extended period, the machine can be
placed in a sealed enclosure (heatshrunk plastic for example)
with dehydrating sachets inside, away from significant and
frequent variations in temperature to avoid the risk of
condensation during storage.
- If the area is affected by vibration, try to reduce the effect of
these vibrations by placing the generator on a damper
support (rubber disc or similar) and turn the rotor a fraction of
a turn once a fortnight to avoid marking the bearing rings.

5
INSTALLATION AND MAINTENANCE
LSA R 49.1 Air/air heat exchanger
ALTERNATORS - Ex II 3 G
TECHNICAL CHARACTERISTICS
4081 en - 09.2006 / a
LEROY-SOMER
T1 T2 T3
T4 T5 T6
Surge suppressor
5+ 6-
R 448
Aux. windings
Exciter
Field
Armature
MAIN FIELD STATOR
Voltage reference
2 - TECHNICAL
CHARACTERISTICS
2.1 - Electrical characteristics
PARTNER LSA R alternator is a machine without sliprings or
revolving field brushes, wound as «2/3 pitch» ; 6-wire, with
class H insulation and a field excitation system available in
either AREP (see diagram).
AREP
system
with R 448
Interference suppression conforms to standard EN 55011,
group 1, class B.
2.2 - Mechanical characteristics
- Steel frame
- End shields in steel, pipe in cast iron
- Greasable ball bearings
- Mounting arrangement
- IM 1001 (B 34) : two-bearing with SAE flange and standard
cylindrical shaft extension
- Degree of protection : IP 55
2.3 - Options
- Stator temperature sensors.
- PTC or PT100 (1 or 2 per phase).
- Strip heater with constant power.
Warning : the supply is still present when the machine
has stopped.
- Bearing detection probe.
- PTC or PT100 (1 or 2 per phase).
For example :coupling reheating resistors and PT100 2/phase
probes (see diagram page 9).
2.4 - Excitation system
The AREP excitation system is driven by the R448 regulator,
or any other compatible model, mounted on the outside of the
machine (see corresponding regulator instructions and the
electrical diagrams provided with the machine).