• After the engine starts and when the generator
AC output voltage and frequency have reached a
pre-set value, transfer switch circuits signal the
transfer switch main contacts to actuate to the
"Standby" power source side. Generator AC output
then powers load circuits.
• When the utility power source voltage is restored
above a pre-set level, transfer switch circuits signal
the switch main contacts to move back to their util-
ity power source side.
• Following re-transfer back to the utility power
source side, transfer switch circuit board action
signals the generator to stop. Engine then shuts
GTS Mode Operation
When in GTS mode, the control board will respond as
follows based on the generator AUTO/OFF/MANUAL
OFF — The generator will not start and run in this
MANUAL — The control board will start and run
the generator whenever the switch is in the manual
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. When 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.
For proper battery charger operation, it will be nec-
essary to supply a fused 240VAC utility fed supply to
terminals N1 and N2 in the control panel.
The components of a home standby generator control
console (Figure 3.1) are as follows:
Section 3 - Operation
Liquid-cooled 25 kW Generators
Figure 3.1 - Generator Control Console
LOW COOL. LEVEL
HI COOL. TEMP.
LOW OIL PRESS.
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)
TO SET EXERCISER TIME
1) PLACE AUTO/OFF/MANUAL SWITCH TO AUTO POSITION.
2) HOLD "SET EXERCISE TIME" SWITCH IN "ON" POSITION FOR THREE SECONDS
AND RELEASE. (SEE OWNER'S MANUAL FOR COMPLETE DETAILS)
THE EXERCISER IS NOW SET. ALL FIVE RED LED'S WILL FLASH FOR 10 SECONDS
THEN THE UNIT WILL START, RUN THROUGH THE EXERCISE CYCLE AND SHUTDOWN.
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 3.6).
• Set switch to MANUAL position to crank and start
the generator engine.
• Set switch to OFF position to shut down an operat-
ing engine. With OFF selected, operation will not
With switch set to AUTO, engine can crank and
start suddenly without warning. Such automatic
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 control
3.2.2 FAULT INDICATOR LEDS
(SEE CHART ON PAGE 14)
These red LEDs turn ON when one or more of the
following engine faults occurs and the engine shuts
• Low Oil Pressure
• Low Battery
• Overspeed/Engine Speed Signal Fault
• High Coolant Temperature/Low Coolant Level
See Section 1.7 for further explanation of engine pro-
RISK OF ELECTRICAL SHOCK. DO NOT REMOVE COVER. NO USER SERVICEABLE
PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
FOR STAND-BY SERVICE CONNECT OUTPUT OF GENERATOR TO SUITABLY RATED
TRANSFER SWITCH IN ACCORDANCE WITH CANADIAN ELECTRICAL CODE, PART I.
TENTION: POUR L'ALIMENTATION DE RESERVE, CONNECTER LA SORTIE DE
ATRICE A UN COMMUTATEUR DE CALIBRE APPROPRIE, CONFORMENENT AU
CANADIEN DE L'ECTRICITE, PREMIERE PARTIE.
CAN AUTOMATICALLY START AT ANYTIME WITHOUT NOTICE.
Y REMOVE FUSE ON CONTROL PANEL AND NEGATIVE BATTE
THIS EMERGENCY POWER SYSTEM IS DESIGNED EXCLUSIVELY FOR
OUTDOOR INSTALLATION ONLY!
USE OF SYNTHETIC OIL IS RECOMMENDED