Generac Power Systems 10 kW LP Repair Manual page 107

DC CONTROL
• Utility source voltage is available to transfer switch Terminal Lugs N1/N2. With the transfer switch main contacts
at their "Utility" side, this source voltage is available to Terminal Lugs T1/T2 and to the "Load" circuits.
• Utility voltage is delivered to the Control Board Wires N1/N2, fuses F1/F2, connected wiring, and Control Panel
UTILITY 1 and UTILITY 2 terminals. A voltage of 240 AC is delivered to the circuit board.
• Battery output is delivered to the circuit board via Wire 13 when the Battery is installed.
Figure 1. circuit condition - utility Source Voltage available
CONTROLLER DISPLAY
Ready to Run
GOVERNOR
ACTUATOR
LEGEND
BA - BRUSH ASSEMBLY
CB - CIRCUIT BREAKER, MAIN OUTPUT
CS - CHOKE SOLENOID
FS - FUEL SOLENOID
HTO - HIGH TEMPERATURE SWITCH
IM_ - IGNITION MODULE
Part 4
OPTIONAL
BATTERY WARMER
CONTROLLER
PRINTED CIRCUIT BOARD
85 1
J1
2
86
13 3
4
18
J3
1 2 3 4 5 6 7 8
4
0 14 23 15B
14
14
CS FS
90 0
0
0
LOP - LOW OIL PRESSURE SWITCH
SC - STARTER CONTACTOR
SCR - STARTER CONTROL RELAY
SM - STARTER MOTOR
SP_ - SPARK PLUG
CB
N1
N1 N2
N1 N2
TO
7.5 AMP FUSE
PCB
SELF RESETTING FUSE
J2
9 10 11 12 13 14 15 16 17 18
0 56
820
817
818
819
= 12 VDC ALWAYS PRESENT
= AC VOLTAGE
= GROUND FOR CONTROL PURPOSES
= 12 VDC DURING CRANKING ONLY
= 12 VDC DURING ENGINE RUN CONDITION
= DC FIELD EXCITATION
= 5 VDC TO LED
sEctioN 4.2
oPEratioNal aNalYsis
44
240 VAC
GENERATOR
OUTPUT
11
NEUTRAL
33
22
00
240 VAC
UTILITY
INPUT
LED BOARD
1
820
L1
2
817
L2
3
818
819 4
GROUND
0
15B
+ BATTERY
23
TRANSFER
Page 105