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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 a
standard GTS type transfer switch, refer to the
applicable transfer switch manual for exact oper-
ating parameters and timing sequences.
3.2
CONTROL CONSOLE
COMPONENTS
The components of a home standby generator control
console (Figure 3.1) are as follows:
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.
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)
E
OFF
SET
ON
SET
EXERCISE
EXECISER
TIME
1) PLACE AUTO/OFF/MANUAL SWITCH TO AUTO POSITION.
TIME
SWITCH
4A FUSE
BATTERY
CHARGER
Guardian Liquid-cooled 27 kW and 30 kW Generators
NOTE:
OVER CRANK
RED LED
E
AUTO
OFF
MANUAL
GREEN LED
TO SET EXERCISER TIME
0E7194
AUTO/OFF/MANUAL
SWITCH
15A FUSE
MAIN
POWER
Section 3 - Operation
3.2.2 FAULT INDICATOR LED
This LED goes ON when one or more of the following
engine faults occurs and when 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.
3.2.3 15 AMP FUSE
Fuse protects the control console's DC control circuit
against electrical overload. If the fuse has melted
open because of an overload, engine cranking and
startup cannot occur. If the fuse needs to be replaced,
use only an identical 15-amp replacement fuse. (Type
AGC)
3.2.4 4.0 AMP INLINE FUSE
This fuse protects the battery charger against electri-
cal overload. If the fuse needs to be replaced, use only
an identical 4 amp replacement fuse (type AG).
This fuse will not remove the + battery input
power from the PCB when it opens. This means
the exercise timer will not be reset.
3.2.5 SET EXERCISE TIME SWITCH
This switch allows programming the generator to
start and exercise automatically. "See Weekly
Exercise Cycle."
3.2.6 SYSTEM READY LED
The System Ready LED (green) has two main pro-
poses. First, the LED will be ON when the
AUTO/OFF/MANUAL switch is in the AUTO position,
utility is present, and there are no system alarms.
This ON state indicates the system is fully ready for
automatic operation.
The system ready LED will be OFF when the switch
is in the manual or OFF positions.
The system ready LED is also used to indicate the
presence of utility sensing at the PCB when the switch
is either in the AUTO or MANUAL modes. The LED
will flash at the rate of 1/2 second on, 1/2 second off
if the utility sensing level is below the transfer back
threshold.
This secondary function is only available with dip
switch two in the OFF position (standard ATS appli-
cation).
Generac
NOTE:
®
Power Systems, Inc. 13
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