Carrier 69UG15 User Manual
Diesel Generator Set
r
OPERATION AND SERVICE
for
69UG15
Generator Set Units
PID UG1450 and Higher
T--343 Rev --
OPERATION AND SERVICE MANUAL
DIESEL DRIVEN GENERATOR SET
MODEL
69UG15
TABLE OF CONTENTS
PARAGRAPH NUMBER Page
SAFETY SUMMARY Safety--i....................................................................
GENERAL SAFETY NOTICES Safety--i............................................................
FIRST AID Safety--i.............................................................................
OPERATING PRECAUTIONS Safety--i............................................................
MAINTENANCE PRECAUTIONS Safety--i..........................................................
UNIT LABEL IDENTIFI CATION Safety--i...........................................................
SPECIFIC WARNING AND CAUTION STATEMENTS Safety--i........................................
DESCRIPTION 1--1...............................................................................
1.1 INTRODUCTION 1--1.....................................................................
1.2 CONFIGURATION IDENTIFICATION 1-- 1...................................................
1.3 ENGINE 1--5.............................................................................
1.3.1 Electronic Governor Module 1--5........................................................
1.3.2 Engine Air System 1--5................................................................
1.3.3 Lube Oil Filter Arrangement 1--5........................................................
1.3.4 Fuel System 1--5......................................................................
1.4 ENGINE SCREW THREADS 1--5...........................................................
1.5 ALTERNATING CURRENT GENERATOR 1--5...............................................
1.5.1 Principle of Operation 1--5..............................................................
1.5.2 Alternating Current Generator Diagram 1--5...............................................
1.6 BATTERY CHARGER 1--6.................................................................
1.7 OPERATING CONTROLS AND INSTRUMENTS 1-- 6.........................................
1.7.1 Introduction 1--6......................................................................
1.7.2 Control Panel and Related Components 1--6..............................................
1.8 SAFETY DEVI CES 1--7...................................................................
1.9 UNIT SPECIFICATIONS 1--11...............................................................
1.10 ENGINE DATA 1--11.......................................................................
OPERATION 2--1.................................................................................
2.1 GENERATOR SET INSTALLATION 2--1.....................................................
2.2 GENERATOR SET REMOVAL 2--2.........................................................
2.3 STARTING AND STOPPING INSTRUCTIONS 2--3...........................................
2.3.1 Pre-Start Inspection 2--3...............................................................
2.3.2 Starting Instructions 2--3...............................................................
2.3.3 Post-Start Inspection 2--3..............................................................
2.3.4 Stopping Instructions 2--3..............................................................
2.4 CONTROL CIRCUIT OPERATION 2--4......................................................
2.4.1 Sequence of Operation 2--4............................................................
TROUBLESHOOTING 3--1.........................................................................
3.1 DIESEL ENGINE 3--1.....................................................................
3.1.1 Engine Will Not Start 3--1..............................................................
3.1.2 Engine Starts Then Stops 3--1..........................................................
3.1.3 Engine Will Not Shut Off 3--2...........................................................
3.1.4 Starter Motor Malfunction 3--2..........................................................
3.1.5 Malfunction In The Engine Starting Circuit 3--2............................................
3.1.6 Miscellaneous Engine Troubleshooting 3--3...............................................
i
T--343
TABLE OF CONTENTS -- Continued
PARAGRAPH NUMBER Page
3.2 BATTERY CHARGER (SOLID STATE) 3--3..................................................
3.3 ALTERNATING CURRENT GENERATOR 3--4...............................................
3.4 AUTO RE-START OPTION 3--5............................................................
SERVICE AND PREVENTIVE MAINTENANCE 4--1...................................................
4.1 INTRODUCTION 4--1.....................................................................
4.2 PREVENTATIVE MAINTENANCE SCHEDULE 4--1...........................................
4.3 BATTERY SERVICE 4--1..................................................................
4.4 ENGINE SERVICE AND COMPONENTS 4--1................................................
4.4.1 Bleeding the Fuel System 4--1..........................................................
4.4.2 Servicing Fuel Pump Internal Filter 4--1..................................................
4.4.3 Fuel Filter 4--1........................................................................
4.4.4 In--Line Fuel Filter 4--1.................................................................
4.4.5 Cooling System 4--1...................................................................
4.4.6 Servicing the Low Coolant Sensor 4--4...................................................
4.4.7 Servicing Low Oil Pressure Switch 4--4...................................................
4.4.8 Servicing Heater Switch 4--4............................................................
4.4.9 Servicing Poly V-belt 4--4..............................................................
4.4.10 Lube Oil Filter 4--5....................................................................
4.4.11 Engine Speed 4-- 5....................................................................
4.4.12 Replacing the Engine Speed Sensor 4--5.................................................
4.4.13 Engine Air Cleaner 4--5................................................................
4.4.14 Engine Crankcase Breather 4--6........................................................
4.4.15 Servicing Intake Heater 4--6............................................................
4.5 SERVICING THE ALTERNA TING CURRENT GENERATOR 4--6...............................
4.5.1 Preventative Maintenance and Operating Precautions 4--6..................................
4.5.2 Generator Repair/Test Procedures 4--7...................................................
4.5.3 Bearing Replacement 4--8..............................................................
4.5.4 Generator Removal and Installation 4--8..................................................
4.6 GENERAL GENERATOR SET MAINTENANCE 4--9..........................................
4.6.1 Maintenance Of Painted Surfaces 4--9...................................................
4.6.2 Check and Replace Isolators/Shockmounts 4--10...........................................
4.7 UNIDRIVE TORQUE REQUIREMENTS 4--11.................................................
SCHEMATICS 5--1................................................................................
5.1 INTRODUCTION 5--1.....................................................................
T--343
ii
LIST OF ILLUSTRATIONS
FIGURE NUMBER Page
Figure 1-1 Generator Set 1--3......................................................................
Figure 1-2 Generator Set -- Top View 1--4............................................................
Figure 1-3 Fuel System Diagram 1--5...............................................................
Figure 1-4 Lube Oil 1--5...........................................................................
Figure 1-5 A--C Generator Circuit Diagram 1--6.......................................................
Figure 1-6 Standard Control Panel and Box 1--7......................................................
Figure 1-7 Customer Specific Control Panel and Box 1--8..............................................
Figure 1-8 Auto Restart Control Box and Panel 1--8...................................................
Figure 2-1 Typical Generator Set Mounting - Standard Mount 2--1......................................
Figure 2-2 Typical Generator Set Mounting - Quick Mount 2--2.........................................
Figure 4-1 Mechanical Fuel Pump 4--1..............................................................
Figure 4-2 Low Coolant Sensor 4--4.................................................................
Figure 4-3 Air Filter (Dry Element Type) 4--5.........................................................
Figure 4-4 Air Filter (Oil Bath Type) 4--6.............................................................
Figure 4-5 Engine Crankcase Breather 4--6..........................................................
Figure 4-6 Rectifier Removal 4--8...................................................................
Figure 4-7 A-C Generator Rectifier Assembly 4--8....................................................
Figure 4-8 Truss and Isolator 4--9...................................................................
Figure 4-9 Engine Shockmounts 4--10................................................................
Figure 4-10 Generator Shockmounts 4--10............................................................
Figure 4-11 Unidrive Torque Requirements 4--11.......................................................
Figure 5-1 Schematic Diagram - Legend 5--1.........................................................
Figure 5-2 Schematic Diagram 5--2.................................................................
Figure 5-3 Schematic Diagram 460 Volt Alternating Current Generator 5--3...............................
Figure 5-4 Schematic Diagram 230 Volt Alternating Current Generator 5--4..............................
Figure 5-5 Schematic Diagram - Legend 5--5.........................................................
Figure 5-6 Schematic Diagram 5--6.................................................................
Figure 5-7 Schematic Diagram 460 Volt Alternating Current Generator 5--7...............................
LIST OF TABLES
TABLE NUMBER Page
Table 1-1 Model Chart 1--2.........................................................................
Table 1-2 Auto Restart Preset Values 1--9............................................................
Table 1-3 Auto Restart Sequencing 1--9..............................................................
Table 1-4 Safety Devices 1--11.......................................................................
Table 4-1 Preventative Maintenance Actions and Schedule 4--2..........................................
iii
T--343
SAFETY SUMMARY
GENERAL SAFETY NOTICES
The following general safety notices supplement the specific warnings and cautions appearing elsewhere in this
manual. They are recommended precautions that must be understood and applied during operation and maintenance
of the equipment covered herein. The general safety notices are presented in the following three sections labeled:
First Aid, Operating Precautions and Maintenance Precautions. A listing of the specific warnings and cautions
appearing elsewhere in the manual follows the general safety notices.
FIRST AID
An injury, no matter how slight, should never go unattended. Always obtain first aid or medical attention immediately.
OPERATING PRECAUTIONS
Always wear safety glasses and hearing protection.
Keep hands, clothing and tools clear of the radiator fan and rotating belts.
No work should be performed on the unit until all circuit breakers and start-stop switches are turned off and the
negative battery terminal has been disconnected..
Always work in pairs. Never work on the equipment alone.
In case of severe vibration or unusual noise, stop the unit and investigate.
MAINTENANCE PRECAUTIONS
Be sure power is turned off and the negative battery cable is disconnected before working on generator set.
Do not bypass any electrical safety devices, e.g. bridging an overload, or using any sort of jumper wires. Problems with
the system should be diagnosed, and any necessary repairs performed, by qualified service personnel.
In case of electrical fire, open circuit switch and extinguish with CO
Fuel Tanks present explosion, fire and rupture hazards even if liquid fuel has been drained. Do not attempt any repairs,
especially repairs using flame, welder or torch, unless you have been properly trained and the tank has been emptied
of liquid fuel and fuel vapors and the tank is properly ventilated.
(never use water).
2
UNIT HAZARD LABEL IDENTIFICATION
To help identify the hazard labels on the Unit and explain the level of awareness each one carries, explanations with
appropriate consequences are provided below:
DANGER
Indicates an immediate hazard which WILL result in severe personal injury or death.
WARNING
Indicates hazards or unsafe conditions which COULD result in severe personal injury or death.
CAUTION
Indicates potential hazards or unsafe practices which COULD result in minor personal injury, product or property
damage.
Safety--i T-343
SPECIFIC WARNING AND CAUTION STATEMENTS
The statements that follow are applicable to the generator set and appear elsewhere in this manual. These recommended precautions must be understood and applied during operation and maintenance of the equipment covered
herein.
WARNING
Beware of moving poly V-belt, belt driven
components and hot exhaust components.
WARNING
Under no circumstances should ether or
any other unauthorized starting aids be
used in conjunction with the air intakeheater.
WARNING
Beware of moving poly V-Belt and belt driven components.
WARNING
Beware of pinch points.
WARNING
Do not use gasoline to clean air cleaner
parts.
CAUTION
Never pour cold water into a hot engine.
CAUTION
Use only ethylene glycol, anti-freeze (with
inhibitors) in system. Use of glycol by itself
will damage the cooling system.
CAUTION
Never open the radiator cap when the coolant is hot.
CAUTION
Alwayscover the engine inlet tube while the
air cleaner is being serviced.
CAUTION
WARNING
Do not direct water or steam into the generator openings. Do not allow any soap and
water solutions to enter the alternator.
WARNING
High voltage (dielectric) testing must not be
performed to the machine without first observing NEMA rules. The insulation of this
generator winding may be safely checked
by using a megger. A high megger reading
indicates good insulation.
CAUTION
Observeproper polarity when installing the
battery or connecting a battery charger, the
negative battery terminal must be
grounded. Reverse polarity may damage
the charging system. When charging the
batteryin unit, isolatethe battery by disconnecting the negative battery terminal first,
then the positive. Once the battery has been
charged,connect the positive batteryterminal first, then the negative.
Do not underfill or overfill the oil bath cups.
Overfilling of cups causes loss of capacity;
underfilling cups causes lack of filtering efficiency.
CAUTION
When trying to restore residual magnetism,
be sure to wear safety glasses and non-conductive gloves. Use an insulated 12 gauge
(or higher) jumper wire. Cut off all but a few
strands from both ends of the jumper wire
to help prevent fusing.
CAUTION
The rotor should not be pulled out from the
alternator more than 0.75 inches. Damage
to the bearing and windings may result.
CAUTION
Continued operation with failed
shockmounts may result in engine or generator damage.
Safety--iiT-343
SECTION 1
DESCRIPTION
1.1 INTRODUCTION
The Carrier Transicold model 69UG15 under--mounted
diesel--driven generator sets provide electrical power
for all--electric refrigeration units.
The generator set (see Figure 1-1 and Figure 1-2)
consists of a diesel engine direct--connected to an
alternating current generator and mounted in a
structural steel frame. The engine is a vertical in--line,
four cylinder diesel manufactured by Kubota, while the
generator is a 15 kW, brushless, single bearing type
manufactured by Lima. The generator provides a
constant 460 or 230 VAC, three--phase, 60 hertz
electrical supply.
Electrical controls are mounted in a control box with
operating controls and gauges mounted on a control
panel, which also serves as the control box cover. The
control panel components are protected by a deflector
assembly or a windowed control box door.
Auxiliary engine equipment consists of the battery, solid
state battery charging system, “spin-- on” lube oil filter,
fuel filter and other necessary components for proper
unit operation. The water pump and the radiator cooling
fan are belt--driven from the engine crankshaft. All
references to engine are as viewed from the fly wheel
end.
The 69UG15 is available as a standard configuration,
with an Auto Restart option or with Auto Restart and Low
Coolant Sensor. The Auto Restart option automatically
restarts the unit in the event of a unit shutdown. Auto
Restart also offers built--in indicators that signal low oil
pressure, high water temperature, overspeed, and
other overcrank conditions.
1.2 CONFIGURATION IDENTIFICATION
Generator set identification information is provided on a
label located below the left mounting pad to the left of the
access service door (front facing). The label provides
the generator set model number, serial number, and
parts identification number (PID). The model number
identifies the overall configuration, while the PID
provides information on specific optional equipment.
Separately bound manuals covering the diesel engine
are also available (see the following chart).
Manual/
Form No.
62--- 11335 V2203--DI Engine Parts List
62--- 11362 V2203--DI Workshop
Equipment
Covered
Type of
Manual
1--1
T-343
Table 1-1 Model Chart
LEGEND
A1 -- Standard Mount -- (See Figure 2-1)
A2 -- Quick Mount -- (See Figure 2-2)
B1 -- Receptacle Box -- with Circuit Breaker
B2 -- Receptacle Box -- with Circuit Breaker
B3 -- Receptacle Box -- Customer Specific
Electrical Wiring
Model
69UG15--050S--05
69UG15--050S--06
69UG15--050S--07 UG1457 5-5, 5-6, 5-7 A1 B4 C2
69UG15--050S--08 UG1458 5-1, 5-2, 5-3, 5-4 A1 B3 C3
69UG15--050Q--06
69UG15--068S--05
69UG15--068Q--05 UG1464 5-1, 5-2, 5-3, 5-4 A2 B1 C1
69UG15--080S--05 UG1465 5-1, 5-2, 5-3, 5-4 A1 B1 C1
69UG15--080Q--05
PID
UG1450 5-1, 5-2, 5-3, 5-4 A1 B1 C1
UG1451 5-1, 5-2, 5-3, 5-4 A1 B1 C1
UG1452 5-1, 5-2, 5-3, 5-4 A1 B1 C1
UG1453 5-1, 5-2, 5-3, 5-4 A1 B1 C1
UG1455 5-1, 5-2, 5-3, 5-4 A1 B2 C1
UG1456 5-1, 5-2, 5-3, 5-4 A1 B2 C1
UG1459 5-1, 5-2, 5-3, 5-4 A2 B2 C1
UG1460 5-1, 5-2, 5-3, 5-4 A2 B2 C1
UG1461 5-1, 5-2, 5-3, 5-4 A1 B1 C1
UG1462 5-1, 5-2, 5-3, 5-4 A1 B1 C1
UG1463 5-1, 5-2, 5-3, 5-4 A1 B1 C1
UG1466 5-1, 5-2, 5-3, 5-4 A2 B1 C1
UG1467 5-1, 5-2, 5-3, 5-4 A2 B1 C1
Schematic and
Diagram Figures
B4 -- Receptacle Box -- Interlock
C1 -- 460 Volt -- Standard
C2 -- 460 Volt -- with Auto--Restart
C3 -- 460 Volt -- Customer Specific
Unit
Mounting
Receptacle
Box
Control Box
1--2T-343
5
15
14
16
214
3
15
230 VOLT
14
1. Mechanical Fuel Pump
2. Injector Pump
3. Engine Speed Sensor
4. Poly V--Belt
5. Radiator
6. Controls (See Figure 1-6 or Figure 1-8)
7. Engine Oil Filter
8. Engine Shockmount (Typical)
15
460 VOLT
14
9. Lube Oil Dipstick/Fill Cap
10. Starter
1 1. Air Cleaner
12. Generator Shockmount
13. Receptacle Box
14. Receptacle
15. Circuit Breaker
16. Air Filter Indicator (if equipped)
Figure 1-1 Generator Set
9
15
14
6871012 1113
1--3
T-343
11
1
2
3
10
9
4
5
6
7
8
1. Fuel Tank
2. Exhaust Muffler
3. Solid State Battery Charger
4. Low Coolant Sensor (If Equipped)
5. Water Temperature Sensor
6. Water Temperature Switch
Figure 1-2 Generator Set -- Top View (Top Frame Members Removed for Clarity)
7. Engine
8. Coolant Overflow Bottle
9. Alternating Current Generator
10. AC Generator Connection Box Access
11. Battery
1--4T-343
1.3 ENGINE
The engine is a vertical, in--line four cylinder diesel
engine, which is direct--connected to the alternating
current generator. Information on the major engine
systems is provided in the following subparagraphs.
1.3.1 Electronic Governor Module
The electronic governor module is a solid state control
module preprogrammed for 1800 RPM. The electronic
governor module, along with the engine speed sensor,
replaced the manual governor in order to provide a
constant engine speed.
1.3.2 Engine Air System
The air cleaner (Item 11, Figure 1-1) is designed to
prolong engine life and performance by preventing dirt
and grit from entering the engine and causing excessive
wear on all operating parts. In order for the air filter to
operate properly, the operator must regularly maintain
the air cleaner equipment in accordance with the
instructions provided within this document.
1.3.3 Lube Oil Filter Arrangement
The engine lubricating oil filter is mounted in a horizontal
arrangement and shown in Figure 1-4.
1.3.4 Fuel System
The fuel system is fitted with an in--line pre--filter and a
fuel filter, which also acts as a water separator. The filter
is also fitted with a heater. The fuel system is shown in
Figure 1-3.
1.4 ENGINE SCREW THREADS
All threads used on the engine are metric.
8
9
6
5
4
7
2
3
1
1. Fuel Tank
2. Fuel Supply Line
3. Inline Fuel Filter
4. Mechanical
Fuel Pump (Engine)
5. Fuel Filter and Water
Separator
6. Injection Pump
8. Fuel Bleed Valve
7. Injector Nozzles
9. Fuel Return Line
1
2
3
4
1. Oil Filter (Primary)
2. Oil Pressure Sender
3. Oil Pressure Switch
4. Oil Pan
Figure 1-4 Lube Oil
1.5 ALTERNATING CURRENT GENERATOR
1.5.1 Principle of Operation
The Marathon Alternator Company (Lima) brushless
AC generator (see Figure 1-2, item 9) is a
self--regulated, rotating field synchronous unit. The
generator stator and exciter stator are combined in a
common housing. The generator field, exciter rotor, and
rotating rectifier assembly are mounted on a common
shaft. The output of the exciter rotor is applied to the
generator field winding through a rotating, full--wave
bridge, silicon rectifier unit.
All connections between the exciter stator windings and
the generator stator windings are internal within the
stator housing. Only the output power leads are
connected at the terminal box, which is located on top of
the generator.
1.5.2 Alternating Current Generator Diagram
Figure 1-5 shows the internal schematic diagram of the
generator, exciter, and rectifier unit. The generator is a
three--phase unit, and the exciter stator and exciter rotor
also have three--phase windings. A portion of the exciter
stator windings is connected across a tap on the
generator stator winding. This exciter shunt winding
provides the generator field excitation power required
for the generator no--load voltage. Another portion of the
exciter stator windings is connected in series with the
output of the generator and provides a compounding
excitation characteristic.
Figure 1-3 Fuel System Diagram
1--5
T-343
The rotor is, in effect, the secondary of a rotating current
transformer induction frequency converter. The exciter
rotor output voltage is applied to the generator field
windings by a three--phase, full wave rotating silicon
rectifier unit. The response time of the excitation system
is very fast as the exciter stator carries an alternating
current corresponding to the load current that appears
immediately on the exciter primary. An increase in load
current will cause an immediate increase in the exciter
secondary output voltage, which is rectified and applied
to the generator field windings. The inherent
compounding characteristics of the excitation system
provide excellent voltage regulation even under heavy
overload conditions.
FIELD
SHUNT
SERIES
STATOR
GENERATOR
RECTIFIER
ASSEMBLY
STATOR
L
O
A
D
ROTOR
EXCITER
Figure 1-5 A--C Generator Circuit Diagram
CAUTION
Observeproper polarity when installing the
batteryor connecting a battery charger. The
negative battery terminal must be
grounded. Reverse polarity may damage
the charging system. When charging the
battery in unit, isolate the battery by
disconnecting the negative batteryterminal
first, then the positive. Once the battery has
been charged, connect the positive battery
terminal first, then the negative.
1.6 BATTERY CHARGER
The solid state battery charger (see Figure 1-2) is
located to the left of the radiator. The charger is powered
by the generator, and this input is protected by a circuit
breaker located on the control panel. The battery
charger produces a tapered charge (25 amps
maximum) and is designed not to overcharge the
battery.
1.7 OPERATING CONTROLS AND
INSTRUMENTS
1.7.1 Introduction
Components required for monitoring and controlling the
unit are located in the control box, on the control panel
(see Figure 1-6) and on the receptacle box (see
Figure 1-1).
1.7.2 Control Panel and Related Components
a. Gauges and Senders
1. Oil Pressure Gauge (see Figure 1-6, Figure 1-7,
Figure 1-8)
The purpose of this gauge is to observe normal
operating engine oil pressure. Normal oil pressure is 35
to 60 psig (3.3 to 5.2 kg/cm
2
).
2. Oil Pressure Sender (see Figure 1-4)
This device senses engine lube oil pressure and
transmits a signal to the oil pressure gauge. The oil
pressure sender is located on the oil filter housing.
3. Water Temperature Gauge (see Figure 1-6,
Figure 1-7, Figure 1-8)
The function of this gauge is to observe water operating
temperature. The gauge is connected to the water
temperature sender.
4. Water Temperature Sender (see Figure 1-2)
This device senses engine water temperature and
transmits a signal to the water temperature gauge.
5. Low Coolant Sensor (see Figure 1-2)
This device senses the coolant level inside the radiator
and will complete a conductive circuit as long as the
probes remain immersed in coolant. When the coolant
level falls below the probes, a signal will be sent to the
auto restart module, shutting down the engine and all
12--volt circuitry.
6. Auto Restart Module
Auto start/restart is provided to simplify the start--up
process and provide an automatic restart feature that
will automatically attempt to restart the unit in the event
of shutdown. Four LEDs are used to indicate shutdown
from overcrank, overspeed, low oil pressure, and high
water temperature. A fifth LED is used to indicate the
unit is running. Refer to Table 1-2 for system preset
values.
The auto restart function will perform a series of six
attempts to restart the unit and make three attempts
within each series. Once the function has completed all
18 attempts, the unit will automatically lock out future
crank attempts. Refer to T able 1-3 for detailed
information on auto restart sequencing.
1--6T-343
b. Meters
1. Ammeter (A)
The ammeter (see Figure 1-6, Figure 1-7, Figure 1-8) is
an indicator of the charging system and unit electrical
draw. It indicates the rate of discharge or charge of the
battery. During start up, the intake heater draws
approximately 42 amps.
2. Total Time Meter (TT)
The total time meter (see Figure 1-6, Figure 1-7,
Figure 1-8) calculates the total hours and provides an
accurate readout of accumulated engine running time.
This data can be used to establish the proper periodic
maintenance schedule (refer to Section 4.1).
c. Manual Switches
1. Intake Heater Switch (HS) (see Figure 1-6,
Figure 1-7)
The intake heater switch is of the momentary type.
When held in the PREHEAT position, the switch allows
approximately 42 amps of battery current to flow into the
intake heater, which preheats the air within the intake
manifold and allows the engine to start. After starting the
engine, the intake heater switch should continue to be
held in the ON position for approximately 5 seconds until
the engine has developed enough oil pressure to close
the oil pressure safety switch.
2. Ignition Switch (IGN) (see Figure 1-6, Figure 1-7)
The ignition switch is of the momentary type to be used
in the OFF/ON/STAR T positions. When held in the
START (ignition) position, it energizes the starter motor
solenoid, which in turn allows the starter motor to crank
the engine. The switch is released to the RUN position
once the engine has started.
3. Ignition Switch (IGN)(Auto Restart) (see Figure 1-8)
The ignition switch is of the maintained contact type to
be used in the RUN/OFF positions. When switched to
the RUN position, it energizes the control module, which
in turn controls all functions of the genset.
1.8 SAFETY DEVICES
Safety devices, such as circuit breakers, fuses, and
safety switches, protect system components from
damage.
The AC generator, solid state battery charger, fuel
heater, high water temperature, safety relay, total time
meter and intake air heater are protected by circuit
breakers. If a safety device opens and there is an
interruption of electrical current, the electronic governor
module will be de--energized, which will also
de--energize the fuel solenoid, interrupt the fuel flow to
the engine and stop the engine.
In units with auto restart, the engine, engine control
devices, and engine monitoring devices are protected
by the auto restart module, low coolant sensor (if
equipped), circuit breaker, low oil pressure switch, and
high water temperature switch. These safety devices
monitor system operating conditions and open a set of
electrical contacts when an unsafe condition occurs. If a
safety device opens and there is an interruption of
electrical current, the electronic governor module will be
de--energized, which will also de--energize the fuel
solenoid, interrupt the fuel flow to the engine and stop
the engine.
De--energizing the fuel solenoid shuts off the fuel supply
to the engine; thus stopping the engine. Safety device
specifications are provided in Table 1-4.
CONTROL
PANEL
2
1
1. Total Time Meter
2. Water Temperature Gauge
3. Oil Pressure Gauge
4. Ammeter
5. Intake Air Heater Switch
6. Ignition Switch
7. Battery Charger Circuit Breaker (CB5)
CONTROL
BOX
3
12
13
11
4
5
10
6
9
7
8
8. Ground Studs
9. Circuit Breaker (CB2)
10. Circuit Breaker (CB3)
1 1. Intake Heater Relay
12. Safety Relay
13. Intake Heater Timer
Figure 1-6 Standard Control Panel and Box
1--7
T-343
CONTROL
PANEL
CONTROL
BOX
2
1
1. Total Time Meter
2. Water Temperature Gauge
3. Oil Pressure Gauge
4. Ammeter
5. Intake Air Heater Switch
6. Ignition Switch
7. Battery Charger Fuse
or Circuit Breaker (CB5)
Figure 1-7 Customer Specific Control Panel and Box
3
11
10
4
5
9
12
6
7
8
13
8. Ground Studs
9. Safety Relay
10. Intake Heater Relay
1 1. Intake Heater Timer
12. Circuit Breaker (CB2)
13. Circuit Breaker (CB3)
CONTROL
PANEL
3
2
1
1. Total Time Meter
2. Engine Start Alarm (Buzzer)
3. Water Temperature Gauge
4. Auto Restart Module
5. Oil Pressure Gauge
6. Ammeter
7. Engine Start/Intake Heater
Energized Light
8. Ignition Switch
CONTROL
4
5
BOX
13
6
12
7
11
8
9
10
9. Battery Charger Fuse
or Circuit Breaker (CB5)
10. Ground Studs
1 1. Circuit Breaker (CB2)
12. Starter Relay (SR)
13. Low Coolant Relay (LR)
14. Intake Heater Relay (HR)
15. Safety Relay (S)
16. Circuit Breaker (CB3)
Figure 1-8 Auto Restart Control Box and Panel
14
15
16
1--8T-343
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