Install Manual

Control Panel Start-Up/Testing
38 Installation Guidelines for 60 Hz Air-Cooled Generators
Check Manual Transfer Switch
Operation
Refer to the Manual Transfer Operation section of the
owner’s manual for procedures.
Electrical Checks
Proceed as follows to complete electrical checks:
1. Verify the generator is OFF.
2. Set the generator main line circuit breaker
(generator disconnect) to OFF (OPEN).
3. Switch OFF all circuit breakers/electrical loads to
be supplied by the generator.
4. Switch on the utility power supply to the transfer
switch using the means provided (such as a utility
main line circuit breaker).
5. Use a calibrated AC voltmeter to check utility
power source voltage across transfer switch
terminals N1 and N2. Nominal line-to-line voltage
should be 240 volts AC. If voltage is not correct,
verify AC output and wiring from utility source to N1
and N2 lugs at transfer switch.
6. Check utility power source voltage across
terminals N1 and the transfer switch neutral lug;
then across terminal N2 and neutral. Nominal line-
to-neutral voltage should be 120 volts AC (if wired
with a neutral). If voltage is not correct, verify AC
output and wiring from utility source to N1 and N2
lugs at transfer switch.
7. Switch OFF the utility power supply to the transfer
switch when the utility supply voltage is verified to
meet the specification provided in Step 6.
8. Press the MANUAL mode button on the generator
panel. The engine will crank and start. Record
cranking gas pressure: ______________.
9. Let the engine warm up for approximately five
minutes to allow internal temperatures to stabilize.
Then set the generator MLCB (generator
disconnect) to ON (CLOSED). Record running gas
pressure: ______________.
10. Connect a calibrated accurate AC voltmeter and a
frequency meter across transfer switch terminal
lugs E1 and E2. Voltage should be 238–242V at a
frequency of 59.5–60.5 Hz. If voltage is not correct,
verify the generator main line circuit breaker
(generator disconnect) is closed and verify AC
output and frequency (Hertz or Hz) at the generator
main line circuit breaker (generator disconnect).
Also verify wiring from generator to E1 and E2 lugs
at transfer switch.
11. Connect the AC voltmeter test leads across
terminal lugs E1 and neutral, then across E2 and
neutral (if wired with a neutral). In both cases,
voltage reading should be 119–121 volts AC. If
voltage is not correct, verify the generator main line
circuit breaker (generator disconnect) is closed and
verify AC output between the E1 and E2 of the
generator main line circuit breaker (generator
disconnect) and neutral at the generator.
12. Verify wiring from generator to E1, E2, and neutral
lugs at transfer switch.
13. Set the generator main line circuit breaker
(generator disconnect) to OFF (OPEN).
14. Press the generator OFF mode button. The engine
will shut down.
NOTE: It is important to not proceed until certain the
generator AC voltage and frequency are correct and
within the stated limits.
Generator Tests Under Load
Proceed as follows to test the generator set with
electrical loads applied:
1. Verify generator is off. Set the generator main line
circuit breaker (generator disconnect) to OFF
(OPEN).
2. Turn off all breakers/electrical loads to be powered
by the generator.
3. Turn off the utility power supply to the transfer
switch, using the means provided (such as a main
line utility breaker).
4. Manually set the transfer switch to STANDBY, with
load terminals connected to the generator’s E1/E2
terminals. The transfer switch operating lever
should be down.
5. Push the generator MANUAL button. The engine
will crank and start immediately.
6. Verify gas pressure while cranking. Record
cranking gas pressure:________
7. Allow the engine to stabilize and warm up for a few
minutes.
(000129)
DANGER
Electrocution. High voltage is present at
transfer switch and terminals. Contact with live
terminals will result in death or serious injury.
(000129)
DANGER
Electrocution. High voltage is present at
transfer switch and terminals. Contact with live
terminals will result in death or serious injury.
(000132)
DANGER
Electrocution. Do not manually transfer under load.
Disconnect transfer switch from all power sources
prior to manual transfer. Failure to do so will result
in death or serious injury, and equipment damage.