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Portable Generator
MDKBH Series
Onan MDKBH Series User Manual
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2
Table of Contents
Default Chapter
4
Table of Contents
4
Section Page
5
Safety Precautions
7
1 Introduction
10
About this Manual
10
Model Identification
10
Emissions Label
11
2 Control Panels
12
Local Control Panel
12
Remote Control Panels
12
Digital Display
13
3 Operation
20
Fuel
20
Engine Oil
20
Engine Coolant
21
Batteries
21
Fire Extinguisher Port
21
Pre-Start Checks
22
Priming the Fuel System
22
Starting the Genset
22
Stopping the Genset
22
Emergency Stop
22
Loading the Genset
23
Load Operation
23
Connecting to Shore Power
23
Resetting Line Circuit Breakers
24
Cold Temperature Operation
24
Care of New or Re-Built Engine
24
Exercising the Genset
24
Storing the Genset
24
4 Periodic Maintenance
26
Periodic Maintenance Schedule
26
General Inspection
27
Maintaining the Battery and Battery Connections
27
Checking Engine Oil Level
28
Changing Engine Oil and Filter
29
Draining/Replacing the Fuel Filter
30
Maintaining the Engine Cooling System
31
5 Enclosure, Drip Pan and Mounting System
38
Enclosure Panels
38
Drip Pan and Mounting System
39
6 Engine and Accessories
42
Major Engine Service
42
Intake Resonator Assembly
43
Exhaust Manifold
44
Fuel System
45
Glow Plugs
46
Governor Actuator
48
Starter
52
7 Generator Drive
54
Overview
54
Inspecting Drive and Bearings
55
Service
55
8 Generator
56
Overview
56
Servicing the Generator
58
Servicing Brushes and Slip Rings
59
Testing Field Flash
59
Testing Generator Windings
60
9 Genset Control
62
Overview
62
Genset Controller
62
Optional Remote Digital Display
66
Local/Remote Control Switch (S4)
66
Emergency Stop Switch (CB1)
66
Hour Meter (M11)
66
Engine Oil Pressure Sender (E1)
67
Engine Coolant Temperature Sender (E2)
67
Battery Charging Regulator (A1)
67
High Exhaust Temperature Switch (S5)
68
Raw Water Flow Switch (S6)
68
Glow Plug Relay (K3)
68
Starter Relay (K4)
68
Governor Actuator (A12)
68
Ground Isolation Relay (K9)
68
Network Interface Module (NIM)
69
10 Reconfiguring Voltage and Frequency
70
As Manufactured" Block on Nameplate
70
Reconnection Label
70
Changing Frequency
70
Reconnecting Generator
70
Adjusting Voltage Using Control Switch
71
Adjusting Voltage Using Optional Digital Display
71
11 Troubleshooting
72
Troubleshooting with Digital Display
72
Troubleshooting with Status Lamp
72
12 Specifications
86
Wiring Diagram
88
Generator Connection Diagram
89
Control Wiring Harness
90
4
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Onan MDKBH Series Specifications
General
Model
MDKBH Series
Category
Portable Generator
Fuel Type
Diesel
Frequency
60 Hz
Voltage
120/240V
Phase
Single
Starting System
Electric
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