Installation Instructions

9
3.3.2 GENERATOR VOLTAGE CHECKS
1. On the generator panel, select the MANUAL mode of opera-
tion. The generator should crank and start.
2. Let the generator stabilize and warm up at no-load for at least
five minutes.
3. Set the generator's main circuit breaker (CB1) to its ON or
CLOSED position.

PROCEED WITH CAUTION. GENERATOR
OUTPUT VOLTAGE IS NOW BEING DELIVERED
TO TRANSFER SWITCH TERMINALS.
CONTACT WITH LIVE TERMINALS RESULTS
IN EXTREMELY DANGEROUS AND POSSIBLY
FATAL ELECTRICAL SHOCK.
4. With an accurate AC voltmeter and frequency meter, check the
no-load, voltage and frequency.
Measure across ATS terminal lugs E1 to E2; E1 to NEUTRAL
and E2 to NEUTRAL.
a. Frequency ..........................................60-62 Hz
b. Terminals E1 to E2 .............................240-246 VAC
c. Terminals E1 to NEUTRAL ..................120-123 VAC
d. Terminals E2 to NEUTRAL ..................120-123 VAC

Failure to do so may result in damage to cer-
tain rotary equipment.
5. When certain that UTILITY supply voltage is correct and
compatible with transfer switch ratings, turn OFF the UTILITY
supply to the transfer switch.
6. Set the generator’s main circuit breaker (CB1) to its OFF or
OPEN position.
7. On the generator panel, select the OFF mode to shut down the
generator.
NOTE:
Do NOT proceed until generator AC output voltage and frequen-
cy are correct and within stated limits. If the no-load voltage is
correct but no-load frequency is incorrect, the engine governed
speed probably requires adjustment. If no-load frequency is
correct but voltage is not, the voltage regulator may require
adjustment.
3.4 GENERATOR TESTS UNDER LOAD
1. Set the generator's main circuit breaker to its OFF or OPEN
position.
2. Manually actuate the transfer switch main contacts to their
emergency (Standby) position. Refer to “Manual Operation”.
3. To start the generator, select the MANUAL mode or operation.
When engine starts, let it stabilize for a few minutes.
4. Turn the generator's main circuit breaker to the ON or CLOSED
position. The generator now powers all LOAD circuits. Check
generator operation under load as follows:
• Turn ON electrical loads to the full rated wattage/amperage
capacity of the generator. DO NOT OVERLOAD.
• With maximum rated load applied, check voltage and fre-
quency across transfer switch terminals E1 and E2. Voltage
should be greater than 230 volts (240VAC system); fre-
quency should be greater than 59 Hz.
• Let the generator run under rated load for at least 30 min-
utes. With unit running, listen for unusual noises, vibration,
overheating, etc., that might indicate a problem.
5. When checkout under load is complete, set main circuit
breaker of the generator to the OFF or OPEN position.
6. Let the generator run at no-load for several minutes. Then,
shut down by selecting the OFF mode.
7. Move the switch's main contacts back to the UTILITY position.
For example, load connected to utility power supply. Refer to
“Manual Operation”. Handle and operating lever of transfer
switch should be in down position.
8. Turn on the utility power supply to transfer switch, using
whatever means provided (such as a utility main line circuit
breaker). The utility power source now powers the loads.
9. Select the generator's OFF mode to shut down the generator.
The system is now set for fully automatic operation.
3.5 CHECKING AUTOMATIC OPERATION
To check the system for proper automatic operation, proceed as
follows:
1. Ensure that the generator is in it’s OFF mode.
2. Install front cover of the transfer switch.
3. Turn ON the utility power supply to the transfer switch,
using the means provided (such as a utility main line circuit
breaker).
NOTE:
Transfer Switch will transfer back to utility position.
4. Set the generator’s main circuit breaker to its ON (or CLOSED)
position.
5. On the generator panel, select the AUTO mode. The system is
now ready for automatic operation.
6. Turn OFF the utility power supply to the transfer switch.
With the generator ready for automatic operation, the engine
should crank and start when the utility source power is turned OFF
after a 10 second delay (factory default setting). After starting, the
transfer switch should connect load circuits to the standby side
after a five (5) second delay. Let the system operate through its
entire automatic sequence of operation.
Operation