Yamaha EF2000iS - Inverter Generator, Руководство по обслуживанию

Страница: 226 / 312

5-20
ELEC
GENERATOR SYSTEM
TROUBLESHOOTING CHART
WEAK OR NO DC CURRENT
No load engine speed inspection.
9
Operate the engine with no load.
9
Measure after warming up the engine.
3,000 r/min / Economy control switch-ON
4,500 r/min / Economy control switch-OFF
GOOD OUT OF SPECIFICATION
Check the throttle control system.
Refer to “THROTTLE CONTROL SYSTEM” in
CHAPTER 6.
Check the DC circuit breaker.
GOOD DISCONNECTED
Replace the DC protector.
DC coil DC voltage inspection
9
Connect sub coil
2
White leads.
9
Economy control switch-OFF.
9
Start the engine with no load.
9
Measure the voltage. (Tester range: AC 20 V)
GOOD
TOO LOW
DOES NOT GENERATE
W
W
W
W
O
O L
L
2
DC coil AC voltage:
14.5–21.7 V at 20 °C (68 °F)
Replace the rectifier.
DC coil resistance inspection
9
Stop the engine.
9
Measure the resistance between the-White.
(Tester range:
Ω ×
1)
SPECIFICATION OUT OF SPECIFICATION
W
W
W
W
2
DC coil resistance:
0.098
Ω
± 20 % at 20 °C (68 °F)
Replace the stator assembly.
Magnetic force is weak.
Replace the magneto rotor.
7DK40-05 6/12/09 6:01 PM Page 44