Linz E1S10L L, Operation And Maintenance

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The rotor is particularly sturdy to hold out against the runaway speed of the drive motors.
It is equipped with a damping cage which allows satisfactory operation even with single-phase, distorted loads. Bearings
have lifelong lubrication.
Operation in particular settings.
If the alternator is going to be used at more than 1000 m above sea-level, a 4% derating per each 500 m increase will
need to be operated. If ambient temperature exceeds 40°C a 4% derating per each 5°C increase will need to be operated.
INSTALLATION AND START UP
The following start up and control operations should be carried out only by qualified personnel.
⇒
The alternator must be installed in a well ventilated room. Ambient temperature should not exceed standard
recommended values.
⇒
Particular attention must be paid to ensure that air inlets and outlets are never obstructed.
While installing the alternator it is important to avoid direct suction of warm air coming from the alternator’s outlet
and/or from the prime motor.
⇒
Before starting up the alternator it is advisable to check (visually and manually) that all terminals in every terminal
board are properly clamped and that the rotation of the rotor in not blocked in any way.
⇒
If the alternator has not been used for a long time, before starting it up it is recommended to test the windings
insulation resistance to earth, keeping into account that every single part has to be isolated from the others. This
particular checkup must be carried out using a “Megger” instrument at 500 V. c.c.. Normally, windings having
resistance to earth ≥1 MΩ are considered sufficiently insulated.
If windings resistance is lower than 1 Ω , insulation will have to be restored by drying the winding (using, for example,
an oven at 60°-80°C temperature, or by making circulate through the wiring a proper value of current obtained from
an auxiliary source). It is also necessary to verify that the alternator’s metallic parts, and the mass of the entire set
are connected to the earth circuit and that the latter satisfies any applicable legal requirements.
Mistakes or oversights concerning earthing may have fatal effects.
3. ASSEMBLINg INSTRUCTIONS
Assembling should be carried out by qualified personnel after reading the manual.
B3/B14 Construction Form
The construction form B3/B14 requires the use of a flexible coupling between the drive motor and the alternator.
The flexible coupling should not originate any axial or radial forces during operation, and will have to be mounted rigidly on
the alternator shaft end. Please follow the instructions below while assembling:
1) Apply the flexible coupling and the adaptor on the alternator as shown in
Figure 1A .
When positioning the flexible coupling, remember that once coupling is over the rotor has to expand itself axially
towards the coupling located on the non-driving end. To make this possible it is necessary that after assembling the
shaft end is positioned according to the cover pattern, as illustrated in
Figure 1B , and related table.
2) Place the relevant flexible coupling on the revolving part of the diesel engine, as shown in Figure 2A .
3) Mount the coupling’s rubber blocks.
4) Couple the alternator to the drive motor by screwing, with suitable screws, the adaptor to the motor
(see Fig. 2B) .
5) Fix, using appropriate rubber anti-vibration dampers, the motor-alternator unit to the common bed-plate. Special
attention must be paid not to cause any stretching that may affect the natural alignment of the two machines.
6) Make sure that the alternator’s non-driving end bearing has the recommended expansion allowance (min. 2 mm.)
and that it is preloaded by a preload spring.
B3/B9 Construction Form
This construction form allows direct coupling of alternator and drive motor. Please follow the instructions below when
assembling:
1) Clamp the «C» cover on the drive motor, as illustrated in
Figure 3A
.
2) Apply the tie rod (13) for the axial clamping of the rotor, and screw it tight on the engine shaft end as shown in Figure
3B .
3) Secure the alternator to its cover using the 4 bolts as indicated in Figure 4A .
4) Lock axially the rotor by placing the washer (50), and tighten the self-locking nut (51) using a torque spanner (driving
torque 35 Nm for M8 tie rod and 55 Nm for M10 tie rod and 100 Nm for M14 tie rod) ( Figure 4B ).
Before placing the nut make sure that the threaded part of the tie rod slides into the rotor in order to
obtain a tight lock. Before assembling verify that the cone-shaped coupling housing (on both alterna-
tor and engine) are clean and in good working order.
B2 Construction Form
This construction form too allows direct coupling of alternator and drive motor. Please follow the instructions below
when assembling:
1) Check that the rotor is positioned correctly, as illustrated in
Figure 5A .
2) Remove rotor’s locking components on the non-driving end.
3) Place the alternator next to the drive motor, as illustrated in
Figure 5B .
4) Centre and secure the stator to the drive motor’s flange, using suitable screws, as shown in Figure 6A .
5) Centre and secure, using appropriate screws, the coupling to the drive motor’s flywheel working through the air outlet,
as indicated in Figure 6B .
Turn the rotor as shown in Figures 7A and 7B.
FINAL CONTROLS
To the term of all the overwrite couplings it is necessary to control the correct axial positioning; it must
be verified that:
1) Between the end of non-drive end side bearing and the surface of axial clamping exists a space of:
2 mm for the alternators E1S10
3 mm for the alternators E1S11 ed E1S13
2) The brushes are centred on rings of the collector.
4. USAgE
Power cables connections should be carried out by qualified personnel when the machine is completely
still and the power cable is disconnected.
Voltage and output frequency: These alternators are designed to supply only the voltage and frequency specified in the
rating plate.
5. WIRINg DIAgRAMS (Figure 8)
Connections power cables:
The E1S series alternators can work with star/neutral connection and with delta connection. The
terminal board will have therefore to be connected as shown in Figure 9: A = Star with neutral con-
nections; B = Delta connections.
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