Generac Power Systems RXGW20SHA3, Руководство пользователя

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Operation
Automatic Transfer Switch Owner’s Manual 13
5. Set generator MLCB to ON (CLOSED). Generator
now powers all LOAD circuits. Verify generator
operation under load as follows:
• Turn on electrical loads to the full rated watt-
age/amperage capacity of generator. DO NOT
OVERLOAD.
• With maximum rated load applied, check volt-
age and frequency across transfer switch ter-
minals E1 and E2. Voltage should be greater
than 230 VAC (240 VAC system); frequency
should be greater than 59 Hz.
• Verify fuel pressure remains within acceptable
parameters (see generator installation man-
ual).
• Allow generator to run under rated load for at
least 30 minutes. With unit running, inspect for
unusual noises, vibration, or overheating that
might indicate a problem.
6. Set generator MLCB to OFF (OPEN) when test
under load is complete.
7. Allow generator to run at no-load for several min-
utes. Then, shut down generator by pressing OFF.
8. Set main switch contacts to utility.
NOTE: See Manual Operation . Handle and operating
lever of transfer switch should be in down position.
9. Set utility service disconnect circuit breaker of
transfer switch to ON (CLOSED).
System is now set for fully automatic operation.
Checking Automatic Operation
Proceed as follows to check system for correct automatic
operation:
1. Verify generator is in OFF mode.
2. Set utility service disconnect circuit breaker of the
transfer switch to OFF (OPEN).
3. Verify switch is de-energized.
4. Install front cover of transfer switch.
5. Set transfer switch utility service disconnect circuit
breaker to ON (CLOSED).
6. Set generator MLCB to ON.
7. Select AUTO on generator control panel. System is
now ready for automatic operation.
8. Set transfer switch utility service disconnect circuit
breaker to OFF (OPEN).
With generator ready for automatic operation, engine
should crank and start when utility source power is turned
off after a five second delay (factory default setting). After
starting, transfer switch should connect load circuits to
standby side after a five second delay. Allow system to
operate through entire automatic sequence of operation.
With generator running and loads powered by generator
AC output, set transfer switch utility service disconnect
circuit breaker to ON (CLOSED). The following will occur:
• After approximately 15 seconds, transfer switch will
transfer loads to utility power source.
• Approximately one minute after transfer, generator
should shut down.
With generator in AUTOMATIC mode, system is now set
for fully automatic operation.
Installation Summary
1. Verify installation has been performed correctly as
outlined by the manufacturer and that it meets all
applicable laws and codes.
2. Test and verify correct operation of the system as
outlined in the appropriate installation and owner’s
manuals.
3. Educate end-user on correct operation, mainte-
nance, and service call procedures.
NOTE: The utility power circuit breaker in transfer switch
must be turned OFF to simulate a utility outage. Shutting
off main disconnect in a subpanel connected to transfer
switch will NOT simulate an outage.
Shutting Generator Down While
Under Load
IMPORTANT NOTE: To avoid equipment damage, fol-
low these steps, in order, when shutting the genera-
tor down during utility outages. Shutdowns may be
required during outages to perform routine mainte-
nance or to conserve fuel.
To turn generator OFF (while running in AUTO and
online):
1. Turn main utility disconnect off.
2. Turn generator MLCB (generator disconnect) to
OFF (OPEN).
3. Run generator for approximately one minute to
cool down.
4. Turn generator OFF.
To turn generator back ON:
1. Put generator into AUTO mode. Start generator
and warm-up for a few minutes.
2. Set MLCB (generator disconnect) to ON
(CLOSED).
The system now operates in AUTO mode. The main util-
ity disconnect can be turned ON (CLOSED). To shut unit
off, repeat this complete process.