Operational Analysis; Introduction; Utility Source Voltage Available - Generac Power Systems 10 kW LP Repair Manual

sEctioN 4.2

oPEratioNal aNalYsis

This "Operational Analysis" is intended to familiarize the service technician with the operation of the DC control
system on units with air-cooled engine. A thorough understanding of how the system works is essential to sound
and logical troubleshooting. The DC control system illustrations on the following pages represent a 14 kW unit.
See Figure 1, below. The circuit condition with the AUTO-OFF-MANUAL switch set to AUTO and with "Utility"
source power available can be briefly described as follows:
BA
85
0
Page 104

introduction

utility Source VoltaGe aVailaBle

POWER
WINDING
STATOR
6
2
POWER
WINDING
0
4
IM2 18
SP2
IM1
18
SP1
86
HTO
LOP
0
13
13
SCR
16
2
6
0
4
22
11
44
33
22
11
56
SCR
0
13
BATTERY
SC
SM
Part 4
DC CONTROL
2
6
0 VOLTAGE
0
REGULATOR
4
4
22
11
0
4
0
13
12V
0