Speedaire SDR8CG00 Manuel D'utilisation Et De Pièces page 21

TROUBLESHOOTING GUIDE GENERATOR
Symptom
No output
voltage
Low output voltage with
no load
High output voltage with
no load
Low output voltage under load
Erratic output voltage
Noisy operation
★ These diagnostic and repair procedures should be performed by an authorized service center.
Possible Cause(s)
1. Engine speed is too slow
2. Open, shorted, or incorrect
wiring
3. Faulty capacitor
4. Open or shorted field windings
5. Open diodes
6. Front panel switch set
incorrectly
7. Circuit breaker tripped
1. Engine speed is too slow
2. Open diodes
3. Faulty capacitor
4. Open or shorted fi eld windings
5. Voltage setting on front panel
incorrect
1. Faulty capacitor
2. Engine speed is too fast
3. Voltage setting on front panel
incorrect
1. Open diode
2. Engine speed too slow at full
load
3. Excessive load applied
4. Voltage setting on front panel
incorrect
1. Unbalanced engine
2. Dirty, corroded, or loose wiring
connection
3. Unstable load applied
1. Loose unit or engine bolt (s)
2. Short circuit in unit field or load
3. Faulty bearing
Corrective Action
1. Adjust engine speed ★
2. Referring to the wiring diagram, clean and reconnect all wiring
★
3. Replace capacitor ★
4. Test winding resistance, replace field winding if necessary ★
5. Test diodes, replace if necessary ★
6. Set front panel switch to generator
7. Reset circuit breaker
1. Adjust engine speed ★
2. Test diodes, replace if necessary ★
3. Replace capacitor ★
4. Test winding resistance, replace field winding if necessary ★
5. Adjust setting on front panel
1. Replace capacitor ★
2. Adjust engine speed ★
3. Adjust setting on front panel
1. Test diodes, replace if necessary ★
2. Adjust engine speed ★
3. Reduce the applied load
4. Adjust setting on front panel
1. Refer to engine manual
2. Referring to the wiring diagram, clean and reconnect all wiring
★
3. Remove all loads, then apply each one individually to determine
which one is causing erratic function
1. Tighten all mountings
2. Test winding resistance, replace fi eld winding if necessary ★
Test load devices for shorts. Replace defective load device.
3. Replace bearing
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