Aftersales Assistance And Maintenance - Sincro HB 2 Manual Para El Uso Y Mantenimiento

ENGLISH
Do not touch the generator while in op-
eration and straight after the generating
set has stopped, since certain parts may
still be very hot.
WARNING!
The lack of routine check-ups and poor
maintenance can cause severe damage
to persons and/or objects.
The maintenance and fault diagnostic
procedures involve risks that may cause
severe injury or even death. These pro-
cedures should therefore be carried out
WARNING!
solely by qualified electrical and me-
chanical specialists. Before any mainte-
nance and cleaning work make sure that
there are no live parts, that the generator
housing has cooled to ambient tempera-
DANGER!
ture, that the electricity generating set can
not be accidentally started up and that all
procedures are strictly observed.
24 - HB - Maggio 2004 - Rev. 00
If on load voltage fluctuations are experienced adjust potentiometer "ST",
which modulates the reaction time of the regulator to external inputs,
thereby eliminating any instability in the alternator-load system.
6.4.5 Wiring diagrams for different circuits
In the appendix of this manual there are diagrams for any connections
other than the factory star-series connection (standard unless otherwise
specified on order).
6.4.6 Initial start-up
Before starting up the electricity generating set check that all external
connections are in order and that the protections are in place.
The various generator parameters are factory set before testing: so no
further adjustments on the machine should be necessary; in the event
that the covers need to be removed for the adjustments and live electrical
contacts are left bare, it is important that this operation be carried out
solely by qualified specialists in electrical plant maintenance.
During the initial start-up pay particular attention for any unusual noises
that might signal an incorrect alignment between motor and generator.
Warning! Do not touch the generator while in operation and straight
after the generating set has stopped, since certain parts may still
be very hot.
Generators are rotating electrical machines that involve potentially
hazardous live or moving parts, therefore the following is strictly pro-
hibited:
• an improper use
• removal of covers and disconnection of safeties.
Warning! The lack of routine check-ups and poor maintenance can
cause severe damage to persons and/or objects.
Due to these inherent hazards, all work of an electrical or mechanical
nature must be carried out by qualified specialists.

7. AFTERSALES ASSISTANCE AND MAINTENANCE

Warning! The maintenance and fault diagnostic procedures involve
risks that may cause severe injury or even death. These procedures
should therefore be carried out solely by qualified electrical and
mechanical specialists. Before any maintenance and cleaning work
make sure that there are no live parts, that the generator housing
has cooled to ambient temperature, that the electricity generating
set can not be accidentally started up and that all procedures are
strictly observed.
7.1 Control of windings and electrical insulation
The condition of the windings can be checked by measuring their elec-
trical resistance to earth. While running this test disconnect the voltage
regulator. It is usually sufficient to control the main winding.
The readings should give a measurement of at least 2MOhm. If the insu-
lation resistance is below this threshold, the alternator alone should be
oven dried at 60 ÷ 80°C for 3 hours. Before carrying out this operation
remove the voltage regulator. As an alternative to oven drying hot air at
60 ÷ 80°C can be blown through the alternator for at least 1 hour.
7.2 Control of bearings
The bearings are sealed and maintenance free.
During maintenance control the condition of the bearings and check that
no grease has leaked; the lifespan of the bearings depends on the vibra-
tions and axial strains they undergo (vibrations can increase considerably
with a bad alignment) and on the working conditions. So check for any