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3. Equipment for Troubleshooting
A good quality multi-scale volt-ohmmeter is the only instrument required for troubleshooting. At least
two “jumper” leads with “alligator” clips and test prods will be required. The 12-V, engine electrical
system may be used as a 12-V DC power source.
If a test box, part number 388318A -2, is available tests may be made more quickly and accurately,
however, the test receptacle connector may be used by inserting the test points of a volt-ohmmeter into
proper terminals of the connector. Refer to Fig. 8.
4. Safety
Electric shock and moving parts can kill! Exercise extreme care to avoid contact
with high voltage parts or leads and moving parts when trouble shooting or
operating the equipment. Remove jewelry such as rings and watch.
5. Parts Replacement
To lessen end item “down” time and to get a faulty machine back “on-the-line” as quickly as possible,
the “black-box” concept of parts replacement is reflected in the troubleshooting chart. For example, if a
component in the protective relay tray is defective, the quickest way to remedy the situation is to
replace the complete tray assembly and send the old tray for repair.
Assemblies which lend themselves to this concept are:
•
Generator control tray
•
Protective relay tray
•
Voltage regulator
•
Overload module
•
Protective monitor module
•
Electric governor control “box”
•
Governor actuator
•
Over-undervoltage module
•
Over-underfrequency module
The above items are in addition to normally replaced items such as fuel pump, injectors, relays, etc.
6. Test Values
Although test values are provided, where applicable, throughout the troubleshooting chart additional
information and values are given here.
•
Generator output at maximum voltage regulator rheostat setting 134 V or higher
•
Generator output at minimum voltage regulator rheostat setting 108 V or lower
•
Overload relay trips at any value above 125% load in 5 minutes or less.
•
Overload relay trips at 130 to 134 V AC, resets at 125 V AC.
•
Undervoltage relay trips at 93 to 102 V AC, resets at 110 V AC.
•
Undervoltage time delay circuit functions in 4 to 12 seconds.
•
Overfrequency relay trips at 415 to 425 Hz, resets at 410 Hz.
•
Underfrequency relay trips at 375 to 385 Hz, resets at 385 Hz.
•
Overload relay trips at 125% rated load in 5 minutes.
WARNING
OM-499
3-1
May 31/94 Revised
Page 2
Содержание 6824-1
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Страница 6: ...This page intentionally left blank OM 499 Safety Warnings May 31 94 Revised Page 4...
Страница 8: ...This page intentionally left blank OM 499 Introduction May 31 94 Revised Page 2...
Страница 14: ...This page intentionally left blank OM 499 Table of Contents May 31 94 Revised Page 6...
Страница 39: ...No 2 Output Control Figure 14 No 2 Power Module Panel Figure 15 OM 499 May 31 94 Revised 1 1 Page 25...
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Страница 66: ...Engine Control Panel in Tilt out Position Figure 8 OM 499 2 1 May 31 94 Revised Page 12...
Страница 90: ...No 2 Output on Dual Output Units Figure 13 OM 499 2 3 May 31 94 Revised Page 20...
Страница 97: ...Test Receptacle Connector Terminals Identification Figure 4 OM 499 May 31 94 Revised 3 1 Page 7...
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Страница 122: ...Generator Set Figure 1 OM 499 4 3 May 31 94 Revised Page 2...
Страница 124: ...Canopy Assembly Figure 2 OM 499 4 3 May 31 94 Revised Page 4...
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Страница 128: ...Canopy Assembly Figure 3 OM 499 4 3 May 31 94 Revised Page 8...
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Страница 132: ...Generator Set Without Canopy Figure 4 OM 499 4 3 May 31 94 Revised Page 12...
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Страница 136: ...Radiator and Cooling System Group Figure 5 OM 499 4 3 May 31 94 Revised Page 16...
Страница 138: ...Air Cleaner Assembly Figure 6 OM 499 4 3 May 31 94 Revised Page 18...
Страница 140: ...Electric Governor Assembly Woodward Governor Kit Part No 488701 Figure 7 OM 499 4 3 May 31 94 Revised Page 20...
Страница 142: ...Fuel Lines Assembly Figure 8 OM 499 4 3 May 31 94 Revised Page 22...
Страница 144: ...Oil Line Assembly Figure 9 OM 499 4 3 May 31 94 Revised Page 24...
Страница 146: ...Fuel Oil Lines Figure 10 OM 499 4 3 May 31 94 Revised Page 26...
Страница 148: ...Fuel Oil Lines Figure 11 OM 499 4 3 May 31 94 Revised Page 28...
Страница 150: ...Stator Terminal Panel Assembly Figure 12 OM 499 4 3 May 31 94 Revised Page 30...
Страница 152: ...Power Module Panel Assembly Figure 13 OM 499 4 3 May 31 94 Revised Page 32...
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Страница 156: ...Control Box Assembly Figure 14 OM 499 4 3 May 31 94 Revised Page 36...
Страница 158: ...Generator Controls Tray Assembly Figure 15 OM 499 4 3 May 31 94 Revised Page 38...
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Страница 162: ...Protective Relays Tray Assembly Figure 16 OM 499 4 3 May 31 94 Revised Page 42...
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Страница 166: ...Control Box and Internal Components Group Figure 17 OM 499 4 3 May 31 94 Revised Page 46...
Страница 168: ...Engine Control Panel Assembly Figure 18 OM 499 4 3 May 31 94 Revised Page 48...
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Страница 172: ...Output Terminal Board Assembly Figure 19 OM 499 4 3 May 31 94 Revised Page 52...
Страница 174: ...Generator Group Figure 20 OM 499 4 3 May 31 94 Revised Page 54...
Страница 176: ...Mounting Frame and Lifting Yoke Assembly Figure 21 OM 499 4 3 May 31 94 Revised Page 56...
Страница 178: ...Auxiliary Frame and Components Group Figure 22 OM 499 4 3 May 31 94 Revised Page 58...
Страница 180: ...Electric Governor Assembly OM 499 4 3 May 31 94 Revised Page 60...
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