Trouble Shooting Chart (Sheet 19of 20)
Figure 5
TROUBLE, SYMPTOM
TEST, CHECK, AND/OR
AND CONDITION
PROBABLE CAUSE
REMEDY
GENERATOR
1. No (or low) voltage
A. Shorted diode in
A. Check diodes in accordance
output
exciter rectifier
with Sect. 2-3, para. 6. If
(CR2).
diodes are good, proceed to
step B.
B. Open or shorted exci-
B. Use ohmmeter to check for
ter rotor winding
open or shorted condition.
(G2)
If exciter rotor windings
are good, proceed to step C.
C. Open or shorted exci-
C. Check field resistance.
ter field windings
for normal values.
(L2)
D. Open or shorted gen-
D. Check resistance with ohm-
erator rotor windings
meter to determine if open
(L1)
or short circuited.
2. Generator operates
A. Open or short cir-
A. Check stator winding resis-
single phase
cuited winding in
tances. (See 2-3, Fig. 12)
generator stator (G1)
for normal values.
3. Generator
A. Loose connection
A. Check all output connec-
overheats
causing high resis-
tions. Look for discoloration
tance.
caused by heat. Tighten
or replace as required.
B. Improper or blocked
B. Check for foreign material
ventilation.
(rags, etc.) blocking air
flow. Provide adequate
ventilation.
C. Generator stator
C. Check stator windings.
windings short cir-
cuited
5. Unbalanced output
A. Loose connection in
A. Check all output connections.
output circuit.
Discolored connectors
indicate a loose connection.
Tighten or replace as
required.
B. Open or short cir-
B. Check stator windings in
OM-2028
June 20/89 Revised
3-1
Page 27
Содержание 6910
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Страница 14: ...This page intentionally left blank OM 2028 Introduction June 20 89 Revised Page 2 ...
Страница 40: ...This page intentionally left blank OM 2028 1 1 May 1 91 Revised Page 26 ...
Страница 66: ...Engine Control Panel in Tilt out Position Figure 6 OM 2028 2 1 August 31 90 Revised Page 12 ...
Страница 72: ...This page intentionally left blank OM 2028 2 2 June 20 89 Revised Page 6 ...
Страница 100: ...Test Receptacle Connector Termi nals Identification Figure 4 OM 2028 3 1 June 20 89 Revised Page 8 ...
Страница 128: ...Generator Set Figure 1 OM 2028 4 3 May 1 91 Revised Page 2 ...
Страница 130: ...Canopy Assembly Figure 2 OM 2028 4 3 May 1 91 Revised Page 4 ...
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Страница 134: ...Generator Set Without Canopy Figure 3 OM 2028 4 3 May 1 91 Revised Page 8 ...
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Страница 138: ...Radiator and Cooling System Group Figure 4 OM 2028 4 3 May 1 91 Revised Page 12 ...
Страница 140: ...Air Cleaner Assembly For units manufactured before and during August 1990 Figure 5 OM 2028 4 3 May 1 91 Revised Page 14 ...
Страница 142: ...Electric Governor Kit Figure 6 OM 2028 4 3 May 1 91 Revised Page 16 ...
Страница 144: ...Fuel Lines Assembly Figure 7 OM 2028 4 3 May 1 91 Revised Page 18 ...
Страница 146: ...Oil Line Assembly Figure 8 OM 2028 4 3 May 1 91 Revised Page 20 ...
Страница 148: ...Stator Terminal Panel Assembly Figure 9 OM 2028 4 3 May 1 91 Revised Page 22 ...
Страница 150: ...Power Module Panel Assembly Figure 10 OM 2028 4 3 May 1 91 Revised Page 24 ...
Страница 152: ...Control Box Assembly Figure 11 OM 2028 4 3 May 1 91 Revised Page 26 ...
Страница 154: ...Generator Controls Tray Assembly Figure 12 OM 2028 4 3 May 1 91 Revised Page 28 ...
Страница 156: ...Protective Relays Tray Assembly Figure 13 OM 2028 4 3 May 1 91 Revised Page 30 ...
Страница 158: ...Control Box and Internal Components Group Figure 14 OM 2028 4 3 May 1 91 Revised Page 32 ...
Страница 160: ...Engine Control Panel Assembly Figure 15 OM 2028 4 3 May 1 91 Revised Page 34 ...
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Страница 164: ...Output Terminal Board Assembly Figure 16 OM 2028 4 3 May 1 91 Revised Page 38 ...
Страница 166: ...Generator Assembly Figure 17 OM 2028 4 3 May 1 91 Revised Page 40 ...
Страница 168: ...Mounting Frame Assembly and Lifting Yoke Figure 18 OM 2028 4 3 May 1 91 Revised Page 42 ...
Страница 170: ...Water Heater Figure 19 OM 2028 4 3 May 1 91 Revised Page 44 ...
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