Operation
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Installation Guidelines for Air-Cooled Generators
7.7.2— Before Starting
Complete the following:
1.
Verify that the generator is OFF. A red LED illuminates to confirm that system is in OFF mode.
2.
Move the Generator Disconnect Circuit Breaker switch to the OFF (Open) position.
3.
Turn off all circuit breakers/electrical loads that are to be powered by the generator.
4.
Check engine oil level. If necessary, add oil until the level is at or near the FULL mark on the dipstick. DO NOT
OVERFILL.
5.
Check fuel supply. Gaseous fuel lines must be properly purged and leak tested in accordance with applicable
fuel-gas codes before use. Verify that all fuel shut off valves in the fuel supply lines are open.
During initial start up only, the generator may exceed the normal number of start attempts and experience an “over-
crank” alarm. This is due to accumulated air in the fuel system during installation. Reset the control board by pressing
OFF and then ENTER, and restart up to two more times if necessary. If unit fails to start, contact a local dealer for
assistance.
7.8 — Electrical Checks
Complete electrical checks as follows:
1.
Verify that the generator is OFF. A red LED illuminates to confirm that system is in OFF mode.
2.
Switch the recommended disconnect switch (installed at the generator input to the Alternative Power Manage-
ment System) to the OFF (Open) position.
3.
Press MANUAL on the control pad. The engine cranks and starts.
4.
Once the generator is running, IMMEDIATELY move the GENERATOR DISCONNECT Circuit Breaker switch to
the ON (Closed) position. This prevents the speed from ramping down before the load is applied, a condition
which could cause the engine to stall.
5.
Connect an accurate AC voltmeter and a frequency meter across the output terminals of the generator. Voltage
should be 220-242 VAC (depending on load) at a frequency of 59.5-60.5 Hertz. If it’s not, verify that the MLCB is
closed and verify AC output and frequency (Hertz or Hz) at the MLCB.
6.
Connect the AC voltmeter test leads across neutral and each output leg of the generator in turn. In both cases,
voltage reading should be 110-121 VAC. If it’s not, verify that the MLCB is closed and verify AC output between
the E1 and E2 of the MLCB and Neutral at the generator. Also, verify wiring from generator to the electrical loads
that are to be powered by the generator.
7.
Move the Generator Disconnect Circuit Breaker switch to the OFF (Open) position.
8.
Press OFF on the control pad to shut down the engine.
NOTE: It is important not to proceed until certain that generator AC voltage and frequency are correct and
within the stated limits.
The secondary 12V DC fan continues to operate for up to one hour after the generator is shut
down (even if the 7.5 amp ATO fuse is removed). To avoid hand injury, always exercise cau-
tion when working near the AVR fan housing.
7.9 — Generator Tests Under Load
1.
Test the generator with electrical loads applied. Start by placing all of the breakers on the Alternative Power Man-
agement System into the OFF (Open) position.
2.
Switch the recommended disconnect switch installed at the generator input to the Alternative Power Manage-
ment System to OFF (Open) position.
3.
Place the main Circuit Breaker on the generator in the ON (Closed) position.
4.
Press MANUAL on the control pad. The generator should crank and start immediately. Allow the engine to stabi-
lize and warm up for a few minutes.
5.
Check voltage and frequency at the disconnect switch installed between the generator and the Alternative Power
Management System.
