Utility Failure And Engine Running - Generac Power Systems CorePower Repair Manual

Home standby generator

Table of Contents

Section 4.3

Operational Analysis

The generator is running, the controller's engine warm up timer is timing out and the generator is producing AC voltage.

12 VDC is delivered to the actuator motor (in the EZ Transfer Operator) via wire 15B. This 12 VDC circuit is completed back to the

controller via wire 23. When the engine warm up time expires the controller will take wire 23 to ground to actuate the actuator in the

transfer switch to the generator position.

When the utility voltage returns to the controller above 75 percent of normal, the controller will energize a 15 second timer. Once the

timer has expired the controller will remove wire 23 from ground, this will actuates the actuator in the transfer switch to the normal

utility position.

Once back in the utility the controller will run the generator for 1 minute for its "cool down" cycle then shut down.

With utility available and the generator in the AUTO position the SYSTEM READY light will be solid.

STATOR

BLK

RED

BLU

LEGEND

BA - BRUSH ASSEMBLY

BC - BATTERY CHARGER

C1 - 4 POS. CONNECTOR

CB - CIRCUIT BREAKER,

MAIN OUTPUT

GND - GROUND

HTO - HIGH TEMPERATURE SWITCH

IM - IGNITON MODULE

LOP - LOW OIL PRESSURE SWITCH

SC - STARTER CONTACTOR

SM - STARTER MOTOR

SP1 - SPARK PLUG

- SPLICE

- SPLICE INTERCONNECT

NOTE: ALL WIRES 18 AWG

300V UL LISTED UNLESS

SHOWN OTHERWISE

AWG SIZE

Page 56