第三部分 故障判定和修理
16
Metallic tapping
sound at explosion
Too much combustion-chamber deposit
Clearing away the
deposit
The fuel marking No. is wrong
Replacing the fuel oil
Overheat of the generator
Check the cause and
eliminate it
Others
Improper adjustment of the valve
clearance
Re-adjust the valve clearance
The connection between the flywheel and the
crankshaft is loosened
Reinstalling it
3-1-7 No DC output voltage
Phenomenon
Causes
Methods of elimination
No DC output voltage
Tripping breakers
Find out the cause of the overload
and reset circuit breakers
Diode fusing
Please send to company repair
station
The circuit connection errors or fall
off
To pick up the
Lines
Rectifier is damaged and DC winding
open circuit
replace the rectifier components
、
stators
3-1-8 Generator stator winding overheating
Over load
Operators must be stipulated in the generator to
adjust load, to avoid overload
Generator air duct was blocked, core box of dust
covered the surface of the coil is not easy to
transfer heat
Regularly check and remove the generator internal
obstruction and coverings, and often keep the air
duct cleaning, maintain normal cooling conditions
Stator winding short circuit or grounding
Check whether the stator winding is short circuit,
with a megger. check whether stator winding
grounding, repair or replacement of winding for
short circuit and grounding
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