Generac Power Systems 48kW, Owner'S Manual

SECTION PAGE
INTRODUCTION ........................................................... 1-1

  Read this Manual Thoroughly .......................................................1-1
  Operation and Maintenance ..........................................................1-1
  How to Obtain Service .................................................................1-1

SAFETY RULES ............................................................ 1-2
GENERAL INFORMATION ............................................ 2-1

Identification Record ........................................................................2-1
 Data 

Label 

...................................................................................2-1

EQUIPMENT DESCRIPTION ........................................ 3-1

Equipment Description .....................................................................3-1
Engine Oil Recommendations ...........................................................3-1
Coolant Recommendations ..............................................................3-1

ENGINE PROTECTIVE DEVICES ................................. 4-1

Engine Protective Devices ................................................................4-1
  High Coolant Temperature Sender ................................................4-1
  Low Coolant Level Sensor ............................................................4-1
  Low Oil Pressure Switch ..............................................................4-1
 Overcrank 

Shutdown 

....................................................................4-1

 Overspeed 

Shutdown 

...................................................................4-1

  RPM Sensor Loss Shutdown........................................................4-1
 DC 

Fuses 

.....................................................................................4-1

FUEL SYSTEM .............................................................. 5-1

 Fuel 

Requirements 

.......................................................................5-1

  Natural Gas Fuel System ..............................................................5-1
  Propane Vapor Withdrawal Fuel System ........................................5-1
  LP Liquid Fuel System ..................................................................5-1

SPECIFICATIONS ......................................................... 6-1

  Stationary Emergency Generator ..................................................6-1
 Engine 

.........................................................................................6-1

 Cooling 

System............................................................................6-1

 Fuel 

System 

.................................................................................6-1

 Electrical 

System 

.........................................................................6-1

  Weather and Maintenance Kits .....................................................6-2
Reconfiguring the Fuel System .........................................................6-2
 Fuel 

System 

.................................................................................6-2

 Control 

Panel 

...............................................................................6-2

GENERAL INFORMATION ............................................ 7-1

Alternator AC Lead Connections .......................................................7-1
  Four-lead, Single-phase Stator ......................................................7-1
Alternator Power Winding Connections .............................................7-1
  3-phase Alternators ("Y" Configuration) ........................................7-1
  3-phase Alternators ("Delta" Configuration)...................................7-2

CONTROL PANEL ......................................................... 8-1

Control Panel Interface .....................................................................8-1
  Using the Auto/Off/Manual Switch ................................................8-1
Activate the Generator ......................................................................8-1
Display Interface Menus ...................................................................8-1
 Activation 

Chart 

...........................................................................8-2

Setting the Exercise Timer ................................................................8-3
  Low Speed Exercise .....................................................................8-3
User Adjustable Settings ..................................................................8-3
Fuel Conversion ...............................................................................8-3
Operation .........................................................................................8-3
  Automatic Transfer Operation .......................................................8-3
  Sequence of Automatic Operation ................................................8-4
  Crank Cycles and Overcrank Shutdown ........................................8-4
Auto Start ........................................................................................8-4
Manual Start ....................................................................................8-4

Alarm and Warning Messages ..........................................................8-4
  Low Oil Pressure Shutdown Alarm ...............................................8-4
  High Coolant Temperature Shutdown Alarm ..................................8-4
  Overcrank Shutdown Alarm ..........................................................8-4
  Overspeed Shutdown Alarm .........................................................8-4
  RPM Sensor Failure Shutdown Alarm ...........................................8-4
  Under-frequency Shutdown Alarm ................................................8-5
  Low Battery Alarm .......................................................................8-5
  Low Battery Warning....................................................................8-5
  Low Coolant Level Alarm .............................................................8-5
  Missing Cam Pulse Alarm ............................................................8-5
  Missing Crank Pulse Alarm ..........................................................8-5
  Low Fuel Pressure Warning ..........................................................8-5
  Governor Sensor Fault Alarm ........................................................8-5
  Wiring Error Alarm .......................................................................8-5
 Undervoltage 

Alarm 

.....................................................................8-5

 Overvoltage 

Alarm 

.......................................................................8-6

  Internal Failure Shutdown Alarm ...................................................8-6
 Canbus 

Alarm 

..............................................................................8-6

 Ignition 

Alarm 

..............................................................................8-6

 Maintenance 

Warning 

...................................................................8-6

 Alarm 

Cancel 

...............................................................................8-6

Common Alarm Relay ......................................................................8-6
Maintenance Alerts ..........................................................................8-6
Menu System ...................................................................................8-7

OPERATION .................................................................. 9-1

Stationary Emergency Generator Control and Operation ....................9-1
Operating Unit with Manual Transfer Switch ......................................9-1
  Engine Start-up and Transfer ........................................................9-1
  Retransfer and Shutdown .............................................................9-1
Operating Unit with Automatic Transfer Switch .................................9-1

MAINTENANCE........................................................... 10-1

General Maintenance ......................................................................10-1
  Check Engine Oil ........................................................................10-1
  Changing Engine Oil ...................................................................10-1
 Cooling 

Intake/Outlet 

..................................................................10-1

  Inspect Cooling System .............................................................10-1
 Engine 

Coolant 

...........................................................................10-2

 Coolant 

Change 

.........................................................................10-2

  Overload Protection for Engine DC Electrical System ..................10-2
 Exercise 

System 

........................................................................10-2

  Perform Visual Inspection ..........................................................10-2
  Inspect Exhaust System .............................................................10-2
  Check Fan Belt ...........................................................................10-2
  Inspect Engine Governor ............................................................10-2
  Changing the Engine Air Filter .....................................................10-2
 Spark 

Plugs 

...............................................................................10-3

 Battery 

Maintenance 

..................................................................10-3

 Battery 

Replacement 

..................................................................10-3

 Battery 

Fluid 

...............................................................................10-3

  Cleaning the Stationary Emergency Generator ............................10-3

SERVICE SCHEDULE ................................................. 11-1
TROUBLESHOOTING ................................................. 12-1

Troubleshooting Guide ....................................................................12-1

EMISSIONS WARRANTY ............................................ 13-1
NOTES
EXPLODED VIEWS & PARTS LISTS
WIRING DIAGRAMS & SCHEMATICS

Content048  Rev

. A  05/10

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