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2.3
CHECK TRANSFER SWITCH
OPERATION
Refer to the "Manual Transfer Operation" section, of the owner's
manual for procedures.
Do not attempt manual transfer switch operation
until all power voltage supplies to the transfer
switch have been positively turned off. Failure
to turn off all power voltage supplies will result
in extremely hazardous and possibly fatal elec-
trical shock.
2.4
ELECTRICAL CHECKS
Complete electrical checks as follows (voltages and frequencies
will be approximate):
1.
Set the generator's main circuit breaker to its OFF (or OPEN)
position.
2.
Set the generator's AUTO/OFF/MANUAL switch to the OFF
position.
3.
Turn OFF all breakers on the load center of the transfer box (T1
and T2).
4.
Turn on the utility power supply to the transfer switch using
the means provided (such as a utility main line circuit break-
er).
The transfer switch is now electrically "hot."
Contact with "hot" parts will result in extremely
hazardous and possibly fatal
electrical shock. Proceed with caution.
5.
Use an accurate 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.
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.
7.
When certain that utility supply voltage is compatible with
transfer switch and load circuit ratings, turn OFF the utility
power supply to the transfer switch.
8.
On the generator panel, set the Auto/Off/ Manual switch to
MANUAL. The engine should crank and start.
9.
Let the engine warm up for about five minutes to allow inter-
nal temperatures to stabilize. Then, set the generator's main
circuit breaker to its ON (or closed) position.
Proceed with caution! Generator power voltage
is now supplied to the transfer switch. Contact
with live transfer switch parts will result in dan-
gerous and possibly fatal electrical shock.
Post Installation Start-up and Adjustments
10. Connect an accurate AC voltmeter and a frequency meter
across transfer switch terminal lugs E1 and E2. Voltage
should be 240-244 at a frequency of 59.5-60.5 Hertz.
11. Connect the AC voltmeter test leads across terminal lugs E1
and neutral; then across E2 and neutral. In both cases, voltage
reading should be 120-122 volts AC.
12. Set the generator's main circuit breaker to its OFF (or OPEN)
position.
13. Set the generator's AUTO/OFF/MANUAL switch to OFF. The
engine should shut down.
It is important not to proceed until certain that generator AC
voltage and frequency are correct and within the stated limits.
2.5
GENERATOR TESTS UNDER
LOAD
To test the generator set with electrical loads applied, proceed as
follows:
1.
Set generator's main circuit breaker to its OFF (or OPEN) posi-
tion.
2.
Turn OFF all breakers on the load center of the transfer box (T1
and T2).
3.
Set the generator's AUTO/OFF/MANUAL switch to OFF.
4.
Turn OFF the utility power supply to the transfer switch,
using the means provided (such as a utility main line circuit
breaker).
Do not attempt manual transfer switch operation
until all power voltage supplies to the transfer
switch have been positively turned off. Failure
to turn off all power voltage supplies will result
in extremely hazardous and possibly fatal elec-
trical shock.
5.
Manually set the transfer switch to the STANDBY position, i.e.,
load terminals connected to the generator's E1/E2 terminals.
The transfer switch operating lever should be down.
6.
Set the generator's AUTO/OFF/MANUAL switch to MANUAL.
The engine should crank and start immediately.
7.
Let the engine stabilize and warm up for a few minutes.
8.
Set the generator's main circuit breaker to its ON (or CLOSED)
position. Loads are now powered by the standby generator.
9.
Turn ON the load center of the transfer switch (T1 and T2).
10. Connect an accurate AC voltmeter and a frequency meter
across terminal lugs E1 and E2.
• Voltage should be greater than 240 volts and frequency
should be 60 Hz.
11. Let the generator run at full rated load for 20-30 minutes.
Listen for unusual noises, vibration or other indications of
abnormal operation. Check for oil leaks, evidence of overheat-
ing, etc.
NOTE:
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