Automatic Transfer Operation; Automatic Sequence Of Operation; Cranking; Cold Smart Start - Generac Power Systems 15 kW EcoGen Owner's Manual

Automatic Transfer Operation

To select automatic operation:
1. Make sure the transfer switch main contacts are
set to the normal power source position (loads
connected to the normal power source).
2. Be sure that normal power source voltage is
available to transfer switch terminal lugs N1 and
N2.
3. Press the AUTO button on the control panel
interface.
4. Set the main circuit breaker (Generator
Disconnect) to the ON (Closed) position.
With these steps complete, the generator will start
automatically when normal power source voltage drops
below a preset level. After the unit starts, loads are
transferred to the standby power source.

Automatic Sequence of Operation

Normal Source Power Failure
With the generator set to AUTO, when normal source
power fails (below 65% of nominal) a five second (dealer
programmable) line interrupt delay time is started. If
normal source power is still gone when the timer expires,
the engine will crank and start. Once started, a five
second engine warm-up timer will be initiated. When the
warm-up time expires, the controller will transfer the load
to the generator. If the normal source power is restored
(above 80% nominal) at any time from the initiation of the
engine start until the generator is ready to accept load
(five second warm-up time has not elapsed), the
controller will complete the start cycle and run the
generator through its normal cool down cycle. However,
the load will remain on the normal power source.

Cranking

The system will control the cyclic cranking as follows:
• 16 second crank, seven (7) second rest, 16 second
crank, seven (7) second rest, followed by three (3)
additional cycles of seven (7) second cranks followed
by seven (7) second rests.

Cold Smart Start

The Cold Smart Start feature can be enabled in the EDIT
menu. With Cold Smart Start enabled, the generator will
monitor ambient temperature and the warm-up delay will
be adjusted based on prevailing conditions.
On a startup in AUTO mode, if the ambient temperature
is below a fixed temperature (based on model) the
generator will warm up for 30 seconds. This allows the
engine to warm before a load is applied. If the ambient
Owner's Manual for 60 Hz EcoGen™ Generator
temperature is at or above the fixed temperature, the
generator will startup with the normal warm-up delay of
five seconds.
When the generator engine is started, a check for proper
output voltage build up will be performed.
If some condition impedes normal voltage creation, such
as frost crystals or dust/dirt prevent a good electrical
connection, the start sequence will be interrupted so that
a cleaning cycle of the internal electrical connections can
be attempted.
The cleaning cycle is an extended "Warming Up" period
which lasts for several minutes while the normal
generator voltage output is determined to be low. During
this cycle, the generator controller will display the
"Warming Up" on the display screen.
If the cleaning cycle fails to clear the obstruction, the
generator controller display will show the "Under Voltage"
message.
After several minutes, the alarm message can be
cleared, and a restart of the generator attempted.
If the problem persists, make no further attempts to start.
Contact an Independent Authorized Service Dealer.

Load Transfer

The transfer of load when the generator is running is
dependent upon the operating mode:
Shutting Generator Down While
Under Load
IMPORTANT NOTE: To turn the generator off during
normal power source outages to perform maintenance,
or conserve fuel, follow these steps:
To turn the generator OFF (while running in
AUTO and online):
1. Turn the main normal source power disconnect
OFF.
2. Turn the main line circuit breaker (MLCB) on the
generator to OFF (OPEN).
3. Turn the generator OFF.
To turn the generator back ON:
1. Put the generator back into AUTO and allow to
start and warm-up for a few minutes.
2. Set the MLCB on the generator to ON.
The system will now be operating in automatic mode.
The main normal source power disconnect can be turned
ON (CLOSED). To shut the unit OFF, this complete
process must be repeated.
Operation
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