Section 3 - Operation; Using An Engineered "Gts" Transfer Switch; Control Console Components - Generac Power Systems Guardian 004992-2 Owner's Manual

Make sure the generator battery is fully charged, prop-
erly installed and interconnected, and ready for use.
Check to ensure that there are no loose electrical con-
nections. Restrain any loose wires to keep them clear
of any moving generator set components.
3.1 USING AN ENGINEERED "GTS"
TRANSFER SWITCH
When required, the pre-packaged standby generator
can be installed with an engineered "GTS" type auto-
matic transfer switch.
In this application, the GTS is responsible for utility
sensing, weekly exercising, and load transferring.
Position two of the four-position dip switch is used to
turn over this control to the GTS.
Pos2 ON — GTS Application
• The control board will NOT monitor utility.
• The control board will NOT perform a weekly exer-
cise. (The five red LEDs will not flash in this
mode.)
• The control board will NOT activate the transfer
output.
• The control board WILL monitor all engine condi-
tions and shut down on all the faults listed in this
document.
Pos2 OFF — ATS Application (Included switch)
• The control board will perform all of the automat-
ic features listed in this document.
• The two-wire start connections should NOT be
used.
GTS Mode Operation
When in GTS mode, the control board will respond
as follows based on the AUTO/OFF/MANUAL switch
position.
OFF — The generator will not start and run in this
position.
MANUAL — The control board will start and run the
generator whenever the switch is in the manual posi-
tion.
AUTO — The control board will monitor the two-wire
start circuit. When a two-wire start is issued the con-
trol board will immediately start and run the genera-
tor. Whe the two-wire start is removed the control
board will immediately stop the generator.
If the generator is installed in conjunction with an
engineered GTS type transfer switch, refer to the
applicable transfer switch manual for exact oper-
ating parameters and timing sequences.
NOTE:

Section 3 - Operation

40kW Liquid-cooled Generators
3.2 CONTROL CONSOLE
COMPONENTS
The components of a home standby generator control
console (Figure 3.1) are as follows:
Figure 3.1 - Home Standby Generator Panel
LED INDICATORS:
FLASHING GREEN LED = NO UTILITY SENSE
5 FLASHING RED LED'S = EXERCISER NOT SET
(IN AUTO MODE ONLY) SOLID GREEN LED = SYSTEM READY, UTILITY POWER ON
RED LED'S = INDIVIDUAL FAULT
(SEE OWNER'S MANUAL FOR COMPLETE LED DETAILS)
OFF
SET
ON
SET
EXERCISE
EXECISER
TIME
1) PLACE AUTO/OFF/MANUAL SWITCH TO AUTO POSITION.
TIME
SWITCH
4A FUSE
BATTERY
CHARGER
3.2.1 AUTO/OFF/MANUAL SWITCH
Use this three-position switch as follows:
• Set the switch to AUTO for fully automatic opera-
tion. See "Automatic Operation" (Section 3.5).
• Set switch to MANUAL position to crank and start
the generator engine.
• Set switch to OFF position to shut down an oper-
ating engine. With OFF selected, operation will not
be possible.
DANGER
With switch set to AUTO, engine can crank and
!
start suddenly without warning. Such automat-
ic start up normally occurs when utility source
voltage drops below a pre-set level. To prevent
possible injury that might be caused by such
sudden starts, set AUTO/OFF/ MANUAL switch
to OFF before working on or around the unit.
Then, place a "DO NOT OPERATE" tag on con-
trol console.
3.2.2 FAULT INDICATOR LEDS
These LEDs turn ON when one of the following
engine faults occurs and the engine shuts down.
• Low Oil Pressure
• Overcrank
• Low Battery
• Overspeed/RPM Sensor Loss
• High Coolant Temperature/Low Coolant Level
See Section 1.7 for further explanation of engine pro-
tection functions.
OVER CRANK
RED LED
E E
AUTO
OFF
MANUAL
GREEN LED
TO SET EXERCISER TIME
0E7194
AUTO/OFF/MANUAL
SWITCH
15A FUSE
MAIN
POWER
13