Air-Cooled Product
Electrical formulas
Automatic Operating Sequences
Problem 12 No Battery Charge
147
Specifications
Fuel Consumption
Engine
Mounting Dimensions
Right Side View
Door removed
Major Features
Part General Information
Rainproof Enclosure Fitted Rated Ambient Temp 40C
Generator Identification Part
Introduction
Neutral Floating
Grounding The Generator
Installation basics
Transfer Switch / Load Center
Selecting a Location
Typical Installation
Installation basics Part
Natural Gas Fuel Interconnections
Power Source And Load Lines System Control Interconnections
Non-Prepackaged Interconnections Part
Control Wires from Transfer Switch
PRE 08 HSB AIR-COOLED Generators Single & V-TWIN Engines
Non-Prepackaged Interconnections
Fuel Requirements
Reconfiguring The Fuel System
Preparation Before Use Part
General
Preparation before use
Install the battery, door and close the roof
Engine Oil Recommendations
Measuring DC Voltage
Meters
Vom
Measuring AC Voltage
Measuring Current
Testing, cleaning and drying Part
Measuring Resistance
Ohm’s Law
Electrical Units
Volts Amps Ohms
ONE 1 Second
Visual Inspection
Insulation Resistance
Megohmmeter
Stator Insulation Resistance Test 12-20 kW
Repeat between Wire 2 and Stator Lead
Stator Insulation Resistance Test 10 kW
Drying The Generator
Cleaning The Generator
Rotor Insulation Resistance Test 10 kW
Rotor Insulation Resistance Test 12-20 kW
Overspeed Shutdown
Low Battery
High Temperature Switch
Low Oil Pressure Shutdown
Overcrank Shutdown
Engine-generator protective devices Part
Control Panel
Operating Instructions
Manual Transfer To Standby Manual Startup
KW Installation Assistant
Operating instructions Part
To Select Automatic Operation
Seconds then re-crank if additional crank cycles exist
Automatic operating parameters
Exercise
Automatic operating parameters Part
Manual
Auto
Part AC Generators
Engine-Generator Drive System
Rotor Assembly
AC Generator
Description & components
Stator Assembly
Main Line Circuit Breaker
Description & components Part
Brush Holder And Brushes 12-20 kW
Other AC Generator Components
Field Boost 12-20 KW
Rotor Residual Magnetism
Startup
Operational analysis Part
Operation 8/10 kW
Operation 12-20 kW
Troubleshooting flowcharts
Troubleshooting flowcharts Part
Problem 3 Generator Produces Low Voltage at No-Load
Troubleshooting flowcharts
Problem 4 Generator Produces High Voltage at No-Load
Units with
Results
Safety
Test 1 Check Main Circuit Breaker
Test 2 Check AC Output Voltage
Test 4 Fixed Excitation Test Rotor Amp Draw Test
Diagnostic tests Part
Remove jumper lead connected to Wire 4 and Wire 15B
Procedure
Diagnostic tests
Test 5 Wire Continuity 12-20 kW
Example
Reconnect Wire
Test 7 Testing The Stator With a Vom 12-20 kW
Test 6 Check Field Boost 12-20 kW
Test Control Panel Wires for Continuity
Repeat using stator lead Wire
Test 8 Test Brushless Stator
Repeat using Wire
Repeat using stator lead
Test 9 Check Capacitor
Measured
Meter lead to Wire
Repeat using Wires 2
Test 10 Test DPE Winding on Brushless units
If Continuity was measured in Steps 5 and 6 proceed to Step
Remove Wire 4 from the voltage regulator
Test 11 Resistance Check Rotor Circuit 12-20 kW
Test 12 Check Brushes And Slip Rings 12-20 kW
Test 14 Check AC Output Frequency
Test 13 Test Rotor Assembly 12-20 kW
Test 16 Check Stepper Motor Control V-twin Engine Units
Remove air cleaner cover to access stepper motor
Loosen the governor clamp bolt Figure
Pull ARM this Direction to Close Throttle
Test 17 Check And Adjust Voltage Regulator 12-20 kW
Test 21 Field Flash Alternator KW Units
Refer back to flow chart
Test 18 Check Voltage Frequency Under Load
Test 20 Check Engine Condition
Construction of Energizing Cord
Page
Transfer
Item Description
General Enclosure
Transfer Relay
Transfer Mechanism
Utility N1 and N2
Neutral Lug
Manual Transfer Handle
Terminal Block
Fuses F1, F2
Fuse Holder
Fuses F3
Operational Analysis
Is a schematic for a typical W/V-Type transfer switch
Operational analysis
Is a wiring diagram for a typical W/V-Type transfer switch
SW1
Utility Source Voltage Available
Utility Source Voltage Failure
Generator Power Available, Waiting to Transfer
Transfer Action to Standby Position
Transfer To Standby
Generator Powering Load
Utility Restored, Generator Still Providing Output to Load
Utility Restored
Utility Restored, Transfer Relay De-energized
Utility Restored, Transfer Switch De-energized
Utility Restored, Retransfer Back to Utility
Utility Restored, Retransfer Back To Utility
Transfer Switch in Utility
Transfer Switch In Utility
Introduction To Troubleshooting
Troubleshooting flow charts Part
Problem 7 In Automatic Mode, No Transfer to Standby
Problem 9 Blown F1 or F2 Fuse
Troubleshooting flow charts
Check N1 & N2
Problem 14 No Battery Charge Load Shed Transfer Switch
Problem 11 No Battery Charge Pre-Wire Load Center
Problem 12 No Battery Charge Rtsn & Rtse Transfer Switch
Problem 13 No Battery Charge GenReady Load Center
If the generator has been shut down, proceed as follows
Test 26 Check Voltage at Terminal Lugs E1, E2
Manual Transfer Switch Operation
Test 27 Check Manual Transfer Switch Operation
Reconnect the J2 connector to the PCB
Test 28 Check 23 and 15B Wiring
PROCEDURE/ Results
Test 29 Test Transfer Relay Tr
Remove the J2 connector from the circuit board
Set VOM to measure DC voltage
Test 30 Standby Control Circuit
Test 31 Check Wire
SW1
Test 32 Utility Control Circuit
Output
N2A
Test 34 Check Fuses F1 and F2
Test 33 Test Limit Switch SW2 and SW3
Test 36 Check N1 and N2 Voltage
Test 35 Check N1 and N2 Wiring
Replace blown fuses as needed
Test 38 Check Utility Sense Voltage
Test 37 Check Utility Sensing Voltage at the Circuit Board
Test 39 Check Voltage at Terminal Lugs N1, N2
Generator
Transfer Switch
Measure across points M and N VDC should be measured
Test 40 Check Battery Charger
Test 42 Check Wire 0 and Wire15B Pre-wire load center
Measure across points a and C VAC should be measured
Test 45 Check Wire 0/15B Rtsn & Rtse Transfer Switch
Rtsn & Rtse Transfer Switch
Measure across points E and F VAC should be measured
15B
Test 43, 44, and 45 Rtse Transfer Switch Test Points
Disconnect the J2 connector from the printed circuit board
Test 48 Check Wire 0/15B GenReady Load Center
Section
Measure across points C and D VAC should be measured
Load Shed Transfer Switch
Measure across points E and D VAC should be measured
ATS
LSS
LSC
Test 51 Check Wire 0 and Wire 15B Load Shed Transfer Switch
Part DC Control
Circuit Board
Auto-Off-Manual Switch
Description and components Part
Terminal Strip / Interconnection
Amp Fuse
Description and components
KW Printed Circuit Boards and J1 Connector
Harness END Remote Wireless Connection
J2 Connector PCB END J1 Connector Stepper Motor
PCB END Harness END
Harness END Remote Wireless Connection N1/N2 Connector
17 and 20 kW Printed Circuit Board and J1 Connector
Menu System Navigation
Choke Solenoid Connector Pin Number Identification
Components
Description
Stator
Circuit Condition Utility Source Voltage Available
Initial Dropout of Utility Source Voltage
Circuit Condition Initial Dropout of Utility Source Voltage
Utility Voltage Dropout and Engine Cranking
Circuit Condition Engine Cranking
Engine Startup and Running
Circuit Condition Engine Startup and Running
Initial Transfer to the Standby Source
Circuit Condition Initial Transfer to Standby
Utility Voltage Restored / Re-transfer to Utility
Circuit Condition Utility Voltage Restored
Engine Shutdown
Circuit Condition Retransfer to Utility and Engine Shutdown
Controller Switch BAD Replace Controller Assembly
Problem 17 Engine Cranks but Won’t Start
Readjust Replace Choke Solenoid BAD
Problem 19 Shutdown Alarm/Fault Occured
Problem 21 Generator Will Not Exercise
Problem 20 7.5 Amp Fuse F1 Blown
Problem 22 No Low Speed Exercise
Test 58 Auto-Off-Manual Switch Twin Only
Test 56 Check Position Of Auto-Off Manual Switch
Test 57 Try a Manual Start
Test 59 Test Auto Operations
Test 61 Check Battery
Test 60 Check 7.5 Amp Fuse
Typical Battery Load Tester
Test Battery Condition
Set a VOM to measure DC voltage
Test 62 Check Wire 56 Voltage
If battery voltage is indicated in refer back to flow chart
Test 63 Test Starter Contactor Relay V-twin Only
Test 64 Test Starter Contactor Single Cylinder Engine
Reconnect Wire 13 to the SCR
Pinion
Test 65 Test Starter Motor
Shorted, open or grounded armature
Checking the Pinion
Tools for Starter Performance Test
Pinion
Port
Test 66 Check Fuel Supply Pressure
Solenoid Removed
12-20 kW Gas Pressure Test point
Test 67 Check Circuit Board Wire Output
Test 68 Check Fuel Solenoid
Disconnect the C3 Connector
Test 69 Check Choke Solenoid
Solenoid De-Energized, Choke Closed KW Units
Approximately 3.7 ohms should be measured
Disconnect C3 Connector Set a VOM to measure resistance
Disconnect the C3 Connector Set a VOM to measure DC voltage
Test 70 Check for Ignition Spark
KW Choke Solenoid
Test 71 Check Spark Plugs
Check Compression
Test 73 Check Shutdown Wire
Remove a spark plug
Repeat Steps 1 through 8 on remaining cylinder
Depending on engine type, do the following
Test 74 Check and Adjust Ignition Magnetos
Magneto
Setting Ignition Magneto Armature Air Gap
Cylinder One Back, Short
With oil level correct, try starting the engine
Test 75 Check Oil Pressure Switch Wire
Navigate to the Digital inputs display screen
Check engine crankcase oil level
Remove the High Oil Temperature Switch
Test 76 Check High Oil Temperature Switch
Test 77 Check and Adjust Valves
Replace switch if it fails the test
Set the AUTO-OFF-MANUAL switch to the Manual position
Test 78 Check Wire 18 Continuity
Ball Stud JAM NUT
Test 80 Check Cranking and Running Circuits
Test 79 Test Exercise Function
Record the current date and time of the unit
8kW
Choke Solenoid
If the solenoid closed, replace the controller
Test 81 Check to see if Low Speed Function is enabled
Disconnect Wire 4 and Wire 0 from the Voltage Regulator VR
Test 82 Check operation Choke Solenoid
Part Operational Tests
Set the generator main line circuit breaker to OFF or open
Manual Transfer Switch Operation
System functional tests Part
Electrical Checks
Generator Tests Under Load
System functional tests
Verify that the AUTO-OFF-MANUAL switch is set to Auto
Setting The Exercise Timer
Checking Automatic Operation
Part Disassembly
Front Engine Access
Major Disassembly Part
Remove control harnesses
Major Disassembly
Section
Section
Major Disassembly
Section
Section
Section
Section
Engine mount nuts with ground wires. See Figure
Torque Requirements Unless Otherwise Specified
Part Electrical Data
Drawing #0G7945
Wiring Diagram, 8 kW Home Standby Part
Wiring Diagram, 8 kW Home Standby
Drawing #0G8511
Schematic, 8 kW Home Standby Part
Part Schematic, 8 kW Home Standby
Drawing #0G7946
Wiring Diagram, 10 kW Home Standby Part
Part Wiring Diagram, 10 kW Home Standby
Drawing #0G8512
Schematic, 10 kW Home Standby Part
Part Schematic, 10 kW Home Standby
Drawing #0G7947
Wiring Diagram, 14 kW Home Standby Part
Part Wiring Diagram, 14 kW Home Standby
Drawing #0G8513
Schematic, 14 kW Home Standby Part
Part Schematic, 14 kW Home Standby
Drawing #0G7948
Wiring Diagram, 17 kW Home Standby Part
Part Wiring Diagram, 17 kW Home Standby
Drawing #0G8514
Schematic, 17 kW Home Standby Part
Part Schematic, 17 kW Home Standby
Drawing #0G8186
Wiring Diagram, 20 kW Home Standby Part
Part Wiring Diagram, 20 kW Home Standby
Drawing #0G8515
Schematic, 20 kW Home Standby Part
Part Schematic, 20 kW Home Standby
Wiring Diagram, Home Standby
Transfer Switch, 9/10/12/16 circuit
Part Wiring Diagram, Home Standby
Drawing #0G7959
Schematic, Home Standby
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