Kohler 20RESC User Manual

Table of Contents, continued
TP-6805 8/15Table of Contents
4.6 Controller Replacement 52................................................
4.7 Controller Setup 56.......................................................
4.8 Voltage Calibration 58.....................................................
4.8.1 Calibration using the RDC2 Controller Keypad and Menus 58..........
4.8.2 Calibration Using SiteTech 60......................................
4.9 Setting the OnCue Password 62............................................
4.9.1 RDC2 Controller 62...............................................
4.9.2 DC2 Controller 62................................................
Section 5 Troubleshooting 63.................................................................
5.1 Introduction 63...........................................................
5.2 Theory of Operation, Electronic Start Sequence 63...........................
5.3 Initial Checks 63..........................................................
5.4 USB Port and Auxiliary Winding Mini-Breaker 64.............................
5.5 Circuit Protection 65......................................................
5.6 Emergency Stop Button 65................................................
5.7 Thermostat 66...........................................................
5.8 OnCue Plus Troubleshooting 67............................................
5.9 Fuel System Troubleshooting 67............................................
5.10 Troubleshooting Engine Hunting, 20 kW Models 68...........................
5.11 Fault Messages 71.......................................................
5.11.1 Main Power Overload Shutdown 71.................................
5.11.2 Faults Related to Paralleling 75....................................
5.12 Status Messages 77......................................................
5.13 Troubleshooting Chart 80..................................................
5.14 Controller Troubleshooting 87..............................................
5.15 Troubleshooting Load Management Problems 88.............................
Section 6 Component Testing and Adjustment 93...............................................
6.1 Theory of Operation 93....................................................
6.2 Alternator Excitation 94....................................................
6.2.1 No to Low Voltage Operation 94....................................
6.2.2 Erratic Voltage Regulation 94......................................
6.2.3 Separate Excitation 94............................................
6.3 Stator 96................................................................
6.4 Main Field (Rotor) 98.....................................................
6.5 Slip Rings 99............................................................
6.6 Brushes 99..............................................................
6.7 Voltage Adjustments 100...................................................
6.7.1 Voltage Regulator Average Voltage Adjustment 100....................
6.7.2 Volts/Hz Slope and Cut-In Frequency 102.............................
6.7.3 Voltage Regulator Gain 102.........................................
6.8 Governor System 103......................................................
6.8.1 Operation 103.....................................................
6.8.2 Initial Checks 103..................................................
6.8.3 Hunting/Surging 104...............................................
6.8.4 Governor System Operation Test 105................................
6.9 Frequency Adjustment 107.................................................
6.9.1 Engine Speed Gain Adjustment for the Governor 107..................
6.9.2 Engine Speed Adjustment for Governor 108...........................
6.9.3 Advanced Speed Control 108.......................................
6.10 Fault Shutdown Tests 110..................................................
6.10.1 Controller Fault Shutdown Functions 110.............................
6.10.2 Fault Shutdown Switches 111.......................................

Kohler 20RESC Specifications

General

Rated Output (Gasoline)	20 kW
Rated Output (LPG)	18 kW
Voltage	120/240 V
Frequency	60 Hz
Fuel Type	Gasoline, LPG, Natural Gas
Starting System	Electric
Warranty	5 years limited
Dimensions	48.5 in L x 29 in H