Interconnect System Self Test Feature; Before Starting; Check Manual Transfer Switch Operation; Electrical Checks - Generac 20 kW Synergy Guia De Instalacion

Operation
7.9.2— Interconnect System Self Test Feature
Upon power up, the system will go through a self test which checks for the presence of utility voltage on the DC circuits.
This is done to prevent damage if the installer mistakenly connects AC utility power sense wires into the DC terminal
block. If utility voltage is detected, a warning message is displayed to indicate a mis-wire, and the generator is locked
out to prevent damage. Power must be removed to clear the warning.
NOTE: This feature does not operate on transfer wire (23), so exercise caution to avoid mis-wiring the connec-
tion or DAMAGE WILL OCCUR.
Utility voltage must be turned on and present at the N1 and N2 terminals inside the generator for this test to be per-
formed and pass.
NOTE: The generator is to be run with all appropriate access panels in place, including during troubleshoot-
ing.
7.9.3— Before Starting
Complete the following:
Verify that the generator is OFF. A red LED illuminates to confirm that system is in OFF mode.
1.
Move the Generator Disconnect Circuit Breaker switch to the OFF (Open) position.
2.
Turn off all circuit breakers/electrical loads that are to be powered by the generator.
3.
Check engine oil level. If necessary, add oil until the level is at or near the FULL mark on the dipstick. DO NOT
4.
OVERFILL.
Check fuel supply. Gaseous fuel lines must be properly purged and leak tested in accordance with applicable
5.
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.
7.10 — Check Manual Transfer Switch Operation
Refer to the Manual Transfer Operation section for procedures.
DO NOT attempt to activate the transfer switch manually until all power voltage sup-
plies to the switch have been completely turned off. Failure to turn off all power volt-
age supplies may result in extremely hazardous and possibly fatal electrical shock.
7.11 — Electrical Checks
Complete electrical checks as follows:
Verify that the generator is OFF. A red LED illuminates to confirm that system is in OFF mode.
1.
Move the Generator Disconnect Circuit Breaker switch to the OFF (Open) position.
2.
Turn off all circuit breakers/electrical loads that are to be powered by the generator.
3.
Turn on the utility power supply to the transfer switch using the means provided (such as a utility main line circuit
4.
breaker).
*
The transfer switch is now electrically "hot." Contact with "hot" parts will result in extremely
hazardous and possibly fatal electrical shock. Proceed with caution.
Use an accurate AC voltmeter to check utility power source voltage across transfer switch terminals N1 and N2.
5.
Nominal line-to-line voltage should be 240 volts AC. If it's not, verify AC output and wiring from utility source to
N1 and N2 lugs at transfer switch.
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