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Kohler
Portable Generator
20RCAL
Kohler 20RCAL User Manual
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Mo
d
els:
1
4
R
C
A
1
4
R
C
A
L
1
8
R
C
A
L
2
0
R
C
A
2
0
R
C
A
L
Controlle
r
:
RDC2
Resi
denti
al/Com
me
rci
al
Gene
rato
r
Sets
TP
-70
92
11/22
b
Opera
tion
2
Table of Contents
Table of Contents
3
Safety Precautions and Instructions
7
Introduction
13
Service Assistance
16
Descriptions and Service Views
17
Introduction
17
Engine
17
Alternator
17
Generator Set Enclosure
17
Transfer Switch
17
Controller
18
Oncue® Plus Generator Management System
20
Accessories
20
Cold Weather Package Kit
20
Battery Heater Kit
20
Breather Tube Heater and Oil Heater Kit
21
Fuel Regulator Heater (18 and 20Kw Models Only)
22
Oil Pressure Sensor Boot Kit
23
Carburetor Heater
23
Emergency Stop Kit
24
Load Management
24
Powersync Automatic Paralleling Module (APM)
24
Programmable Interface Module (PIM)
25
Service Views
26
Generator Set Operation
27
Prestart Checklist
27
Exercising the Generator Set
27
Local Starting and Stopping
28
Automatic Operation
28
Remote Starting and Stopping
28
Remote Emergency Stop Switch
28
Engine Start Crank Cycle
30
Engine Cooldown
30
Automatic Operation with Model RXT Transfer Switch
30
Automatic Operation with Other Transfer Switches
30
Exercise
31
Setting the Exerciser
31
Unloaded Cycle Exercise with Complete System Diagnostics
32
Unloaded Full-Speed Exercise
33
Loaded Full-Speed Exercise (with RXT Only)
33
Shutdown During Exercise (Advanced Diagnostic)
33
Power Failure During Exercise Cycle
33
Faults
34
Warnings
34
Shutdowns
34
Shutdown During Exercise (Advanced Diagnostic)
34
ATS Communication Errors
34
Resetting the Controller after a Fault Shutdown
34
Faults Related to Paralleling
37
RDC2 Controller Operation
39
RDC2 Generator Set/Transfer Switch Controller
39
Control and Indicators
39
Controller Keypad
40
LED Indicators
41
LCD Display
41
Controller Power
42
Battery Charging
42
Changing Settings
43
Setting the Exerciser
45
Setting the Exerciser at Controller Power-Up
45
Changing the Exercise Settings
45
RDC2 Controller Menus
47
Main Menu
47
Overview Menu
48
Engine Metering Menu
49
Generator Metering Menu
50
Generator Set Information Menu
51
Genset Run Time Menu
51
Genset System Menu
52
ATS Status Menu
54
ATS Configuration Menu
55
Date and Time Menu
56
Networking Information Menus
56
Networking Status Submenu
57
Networking Configuration Submenu (Oncue® Password)
58
RBUS Information
60
Remote Devices Submenu
61
Programmable Interface Module (PIM) Status Menu
62
Load Control Menus
63
Event Log
64
Scheduled Maintenance
65
Service Schedule, 14 Kw Models
66
Service Schedule, 18 and 20 Kw Models
67
Lubrication System
68
Low Oil Pressure Shutdown
68
Oil Check
69
Engine Oil Recommendation
69
Oil Change Procedure
69
Resetting the Maintenance Timer
71
Oil Cooler (18/20RCA/RCAL Only)
71
Spark Plugs
72
Air Cleaner Service
73
Air Cleaner, 14 Kw Models
73
Air Cleaner, 18/20 Kw Models
74
Cooling System
75
Exhaust System
75
Battery
76
Cleaning the Battery
77
Checking Electrolyte Level
77
Checking Specific Gravity
77
Storage Procedure
79
Lubricating System
79
Fuel System
79
Cylinder Lubrication
79
Exterior Preparation
79
Battery
79
Troubleshooting
81
Introduction
81
Fault Messages
81
Circuit Protection
81
Controller Internal Circuit Protection
81
Line Circuit Breaker
81
USB Port and Auxiliary Winding Mini-Breaker
81
Stop Switches
82
Thermostat
82
Troubleshooting
84
Appendix A. Abbreviations
85
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Kohler 20RCAL Specifications
General
Model
20RCAL
Engine Displacement
999cc
Frequency
60 Hz
Voltage
120/240V
Engine Type
4-Stroke
Run Time at 50% Load
10 hours
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