As we know that regular
maintenance of diesel generator can not only prolong the service life of the
genset, but also improve the performance of the unit.
Intake
system
I. The intake system is
mainly composed of an intake duct and an air filter.
II. The air filter
configured in the medium-high diesel generator set is a dry paper air filter.
The filter has a resistance indicator to indicate the blockage of the filter
element. The resistance indicator should be checked before each start up and
running of the unit. The air filter should be replaced immediately when all
colour signs are visible from the window. The replaced air filter should be
disposed of and cannot be reused. When replacing the air filter, special care
should be taken to prevent dust from entering the intake system.
Exhaust system
The industrial
heavy-duty muffler equipped with medium-high diesel generator set is an
absorption muffler. The working principle of the muffler is to absorb noise by
installing a sound-absorbing bushing inside the muffler, which has a wide
frequency range of noise reduction. The exhaust back pressure values of the
muffler and the exhaust pipe are added together to obtain the exhaust back
pressure value of the whole system.
Generator
maintenance
Pre-operation check
I. Grounding: The
generator is not grounded when it leaves the factory, and must be grounded properly
according to the site regulations. Improper grounding and incorrect protection
can result in damage to the generating set and even personal injury.
II. Reconnection: Most
alternators can be rewired to adapt different output voltages. Before changing
the voltage, check that other components are suitable for new voltages, such as
power switches, current transformers, cables and ammeters, voltmeters, etc.
III. Insulation
inspection
After installing the
generator, first check the resistance of the coil. At this point, the automatic
regulator should be disconnected, the rotating diode can be temporarily
short-connected with wire, or disconnected first, and all control lines must be
disconnected. Disconnect the wire between the midpoint and the ground and
measure the impedance from the terminal to the ground with a 500V megger or
similar instrument. The insulation resistance from machine to the ground should
exceed 2MΩ. If the insulation resistance is less than 2MΩ, the coil must be
dried.
Repair
and maintenance tips
I. It is recommended
that the user check and clean the main generator and all accessories regularly.
II. According to the
generator data, the insulation performance of the coil is tested before the
first use. If the generator is backed up, the insulation of the winding coil is
detected every 3~6 months depending on the humidity of the storage place. In
high humidity areas, it is recommended that the user install a heater in the
generator to keep it dry when the machine is not in use, which will help reduce
the generator's failure rate and ensure its normal service life.
III. The inside and
outside of the alternator should be cleaned regularly, and the frequency of
cleaning depends on the environment where the machine is located. When cleaning
is required, follow these steps: Disconnect all power, wipe off all dust, dirt,
oil, water and any liquid on the outside, and clean the ventilation net, as
these things will enter the coil, causing the coil to overheat or break the
insulation. Dust and dirt should be sucked up with a vacuum cleaner. Do not use
blowing air or high-pressure water spray to clean.
IV. Incorrect
installation, operation, maintenance or replacement of parts can result in
serious injury or equipment damage. Service personnel must be qualified to work
in electrical and mechanical services. Electric shock can cause serious
personal injury and even death. When conducting electrical wiring, the user
should avoid the wrong operation of direct connection between the ground and
the neutral line of the generator.
Comments
Post a Comment