6-25
WARNING
Many troubleshooting procedures present hazards that can result in severe personal inju-
ry or death. Only qualified service personnel with knowledge of fuels, electricity, and machinery haz-
ards should perform service procedures. Review safety precautions on page iii.
TABLE 6-11. BEGIN SPEC B CONTROL TROUBLESHOOTING – BATTERY CHARGE MODE
Trouble Possible Cause Corrective Action Section/
Page
Low Battery 1. Weak or discharged battery due to:
Voltage a. No battery charging. 1a. Spec B 60-Hz models require a battery
b. Low electrolyte level in battery. charger. These models do not have a
c. Long periods of non-use. battery charge winding.
d. Improperly wired battery. 1b. Replenish electrolyte and recharge
e. Load connected to battery while battery.
genset is turned off. 1c. Connect a separate battery charger to
f. Too much DC load on genset bring battery up to full charge.
starting battery. 1d. Reconnect and check battery connec-
tion.
1e. Disconnect load and recharge
battery.
1f. Remove other DC loads from genset
starting battery.
2. 50 Hertz only: Genset 2a. Check all wiring connections between
charging circuit not functioning due to: the generator B1-B2 windings and the
a. Open wire connection in charging Battery B+ connection, including all
circuit (see Figure 6-13). connections to battery charger (VR2).
b. Battery Charger (ZR2) defective. 2b. Refer to battery charger (VR2) test. 7-9
c. Generator B1-B2 defective. 2c. Refer to generator test section. 9-8
NOTE: The battery charging circuit is not available on the Spec B (or later) 60 Hz models. Spec B 50 Hz
models have a maximum 10-amp, 12-VDC output designed to maintain and charge the genset starting bat-
tery.
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