Fermont MEP-831A Manual de usuario

UNITED STATES MARINE CORPS

MARINE CORPS ENGINEER SCHOOL

UTILITIES INSTRUCTION COMPANY

PSC 20069

CAMP LEJEUNE, NORTH CAROLINA 28542-0069

MEP-831 GENERATOR CHARACTERISTICS, CAPABILITIES,

COMPONENTS, OPERATIONS AND PMCS CLASS

1. MEP-831A CHARACTERISTICS AND CAPABILITIES.

a. The MEP 831A is a 3kW (3000 watt) generator producing

60Hz of electric power. The MEP 831A is skid mounted with fork

lift provisions.

b. The MEP 831A weighs 304lbs dry, and 334lbs with a full

fuel tank. The MEP 831A is 34.8” long, 27.8” wide, and 26.5”

tall. The MEP 831A has six lifting handles and four tie down

rings. The MEP 831A can be manually lifted, or moved by

forklift.

c. The MEP 831 has a hinged enclosure that allows quick

access for preventive and scheduled maintenance. The cooling

system for the MEP 831A is a thermostatically cooled by two

fans.

d. The MEP 831A has a single-cylinder, air cooled, direct

injection, four stroke Yanmar diesel engine. The engine operates

between 3000 to 3600 RPM (6.7 HP at operating speed). The

maximum RPM rating is 3800 RPM. The diesel engine for a MEP 831A

has an oil capacity of 1.2 quarts (1.1 liters), and is consumed

at 0.04 ounce (1.18 ml) per hour at a rated load.

e. The MEP 831A is equipped with a four gallon fuel tank,

allowing eight hours of continuous operation at a full load. The

MEP 831A is designed to consume .5 gallons per hour at a rated

load. When the MEP 831A is connected to an auxiliary fuel

system, it will be continually replenished. The MEP 831A is

designed to use either diesel fuel type 1 (DF1) or 2 (DF2), and

turbine fuel JP-8.

f. The MEP 831A has 24VDC cranking system. The MEP 831A has

a Permanent Magnet Alternator (PMA) with a frequency converter.

g. The output voltages are a 2-plug 120VAC convenience

receptacle with Ground Fault Circuit Interrupter (GFCI), single

phase, 2 wire, 120VAC, or single phase, 3 wire, 120/240VAC. The

current output for the MEP 831A is 31 amps max for 120VAC, and

16 amps max for 120/240VAC.

PHYSICAL DESCRIPTION

Generator Set:

Manufacturer

Fermont

Model

MEP-831A

Fuel Tank Capacity (gal)

Fuel Type

Diesel/JP-8

Engine

Manufacturer

Yanmar

Model

L70AE-D/DE

Type

4 cycle, air cooled

Number of Cylinders

Speed (RPM)

3000 to 3600

Dimensions

Length (in)

Width (in)

Height (in)

Weight

Dry (lbs)

304

Wet (lbs)

334

Power Requirements

A/C Generator

Manufacturer

Dewey Electronics

Type

Rotating field, synchronous

Phase

Current Ratings (amps)

60Hz

120 volts, 2 wire

31a

120/240 volts 3 wire

16a

2. COMPONENTS OF THE TACTICAL QUIET GENERATOR (TQG).

a. Major Components.

(1) Enclosure Assembly. The enclosure assembly (1,

Figure 1-2), supports the control box assembly, cooling air

system, and exhaust assembly components. It protects the

engine, generator, and other internal components from damage.

It incorporates a fire retardant acoustical insulation to reduce

noise levels, and acts as a shield to reduce electromagnetic

pulse effects on generator set components.

(2) Enclosure Cooling and Ventilation System. Air

intake openings and engine intake ducts at the rear of the

enclosure assembly allow for the engine cooling using external

air. Two thermostatically controlled fans (5, Figure 1-2)

mounted in the enclosure assembly activate during high

temperature conditions to drive hot exhaust air through openings

in the enclosure.

(3) Skid Base. The welded skid base (17, Figure 1-2)

provides the main structural support for the generator set. The

engine/generator assembly is mounted to the skid base with

vibration isolators which isolate engine generated vibration

from the rest of the generator set. The generator set’s plastic

fuel tank is contained within the skid base, as is the 24VDC

battery.

(a) The skid base contains four swing-out lift

handles (7), two standard lifting handles (9), four tie-down

rings (8), and two forklift openings (12).

(b) An oil drain plug (10) and fuel drain plug (11)

protrude through openings on the skid base, on the right side of

the generator set.

connections (behind cover (16)) are mounted to the skid base at

the rear of the generator set.

(4) Battery. A 24VDC battery, mounted in the skid base,

provides cranking power for the engine as well as DC power for

the control system. The battery’s location in the skid base

permits easy servicing. Openings in the enclosure assembly vent

escaping battery gases to the atmosphere, preventing gas build-

up inside the enclosure.

(5) Exhaust System. The generator set exhaust system

(20) consists of a muffler and exhaust piping. Engine exhaust

exits the generator set through an opening in the top of the

enclosure assembly. Insulating material on the exhaust system

components protects maintenance personnel against potential burn

hazards and reduces heat rejection into the enclosure assembly.

WARNING

Engine exhaust gas (Carbon Monoxide) is a deadly odorless,

colorless, poisonous gas. Avoid breathing it.

(6) Control Box Assembly. The control box assembly is

mounted to the enclosure assembly at the rear of the generator

set. Instruments, controls, and indicators required to operate

the generator set are located on the control box assembly. The

control box assembly consists of a control panel (18, Figure 1-

2), ground fault circuit interrupter, (13) (60Hz only).

(a) The control panel (18) portion of the box is

hinged to allow access for testing and maintenance.

(b) The Control Panel Contains the Following

Instruments and Switches:

1. HOURS Meter

2. FUEL LEVEL Gauge

3. VOLTAGE Meter

4. LOAD Meter

5. START/RUN/STOP Switch

6. EMERGENCY STOP Switch

7. AUX FUEL Switch

8. PREHEAT Switch

9. VOLTAGE ADJUST Switch

10. BATTLE SHORT Switch

11. Fault Indicator Module

a. The Fault Indicator Module Contains

Lights that Indicate the Following Generator Set Conditions:

(1) ENGINE HIGH TEMP

(2) LOW OIL PRESSURE

(3) NO FUEL

(4) OVERVOLTAGE

(5) OVERLOAD SHORT CIRCUIT

(6) BATTLE SHORT ON.

(7) Output Terminals and Slave Receptacle. The output

terminal board and ground terminal are located on the generator

set skid base, just below the control box assembly. A hinged

cover (16, Figure 1-2) allows access to the three load terminal

and single ground terminal. An insulated wrench, used for

connecting wires to terminals, is secured to the rear of the

hinged cover. A filter mounted to the back of the load

terminals prevents Electro-Magnetic Interference (EMI). The

generator’s 24VDC slave receptacle is mounted to the skid base,

to the right of the output terminals.

(8) Engine/Generator Assembly. The engine/generator

assembly (Figure 1-3) consists of a single-cylinder engine (14),

permanent magnet generator (5), and associated electrical, fuel

and oil components, The engine/generator assembly is mounted to

the skid base (8) with vibration mounts (7) to prevent engine

vibration from affecting the operation of the generator set

components. A fuel drain plug (9) and oil drain plug (10) allow

maintenance to drain engine fluids.

WARNING

Exposed fuel and fuel vapor can ignite or explode, resulting

in possible serious injury or death.

WARNING

Electrocution Hazard

Electrical high voltage cannot be seen but it can kill you,

render you unconscious, or severely burn you. Failure to

observe safety precautions may result in serious injury or

death.

(9) Engine. The generator set is equipped with a single

cylinder; air cooled, direct injection, four stroke cycle,

diesel engine (14, Figure 1-3). The engine is designed to

operate between 3000 and 3600 RPM. The engine has self-contained

oil lubrication and fuel systems. The engine is equipped with

an air filter (2), muffler (3), 24VDC starter motor (4),

manifold heater (15), engine high coolant temperature switch

(12), engine oil low pressure switch (12), and oil fill cap and

gauge (11). A rope pulled recoil system (1) permits manual

start of the engine without the battery. Engine cooling is

provided by a flywheel fan, which forces air over the cylinder

fins and engine components. The fan is completely guarded to

prevent inadvertent contact during operation.

(10) Generator. The permanent magnetic generator (5,

Figure 1-3) consist of four three phase isolated AC output

windings. Voltage output is proportional to engine speed

(approximately 190VAC at 3kW, 3450 RPM). The rotating portion

of the generator is mounted directly to the engine, on the

engine crankshaft extension, without a bearing.

(11) Power Inverter/Converter. The power inverter/

converter (19, Figure 1-2) is located in the skid base, between

the control box and generator. It provides the regulated

120VAC/240VAC, 2 wire, or 120/240VAC, 3 wire (single phase only)

output.

(12) Fuel System. The generator set is equipped with a

four-gallon fuel tank (1, Figure 1-4) which provides enough fuel

to operate for eight hours at full load. The tank is mounted

within the skid base. The tank’s filler assembly consists of a

filler neck (2), fuel strainer (3), and vented fill cap (4).

The tank contains a fuel pick-up connection (5), fuel return

connection (6), fuel drain connection (7), fuel-gap sending unit

(8), and fuel level switch. An electric pump (10) feeds fuel

from the tank (1), through a combination fuel filter/ water

separator (11), on to the engine’s fuel injection pump (12). An

auxiliary fuel transfer pump (13) allows the generator to

operate using an auxiliary fuel source.

3. DESCRIPTION AND USE OF OPERATORS CONTROLS AND INDICATORS.

a. Prior to placing the generator set into operation,

personnel must be familiar with the location and function of all

switches, controls and indicators. Controls and indicators

required for generator set operation are described below and

identified on Figure 2-1.

(1) HOURS Meter. Indicates hours of generator set

operation.

(2) FUEL LEVEL Meter. Indicates amount of fuel remaining

in the generator set fuel tank.

(3) VOLTAGE Meter. Indicates generator set output

voltage.

(4) LOAD Meter. Indicates generator load in kilowatts.

(5) DC CIRCUIT BREAKER. Trips to stop generator set

operation in case of electrical surge in DC control system.

Push to reset breaker.

(6) Fault Indication Module. Contains lights that

indicate generator set operation conditions. Includes the

following indicator lights:

(a) ENGINE HIGH TEMP fault (red)

(b) LOW OIL PRESSURE fault (red)

(d) OVERVOLTAGE fault (red)

(e) OVERLOAD SHORT CIRCUIT fault (red)

(f) BATTLE SHORT ON fault (yellow)

(7) Dual purpose FAULT RESET/PUSH TEST switch allows

operator to test indicator lights before operation, and reset

fault isolation module after fault has been remedied.

(8) BATTLE SHORT Switch. Two-position switch that

allows generator set operation under certain fault conditions.

Tabla de contenidos

Manuales populares de Generador portátil de otras marcas

Kohler

Kohler 20EORZ Manual de instrucciones

Powerhorse

Powerhorse 83171 Manual de usuario

HURST

HURST ML-630-SI Manual de usuario

ETQ

ETQ TG4000 Manual de usuario

Briggs & Stratton

Briggs & Stratton 40265 Guía de configuración

ConMed

ConMed 7550 Manual de usuario

Owon

Owon Waveform Generator Manual de usuario

evertz

evertz 7700 Series Manual de usuario

Power Stroke

Power Stroke PS906025 Manual de usuario

Firefly

Firefly Cygnus CYG2400/460/24 Manual de usuario

Draper

Draper PG950S Actualización de firmware

PowerBoss

PowerBoss PowerBoss Manual de usuario

SDMO

SDMO SH 4000 Manual de usuario

EINHELL

EINHELL STE 5500 Manual de usuario

Wanco

Wanco WI3000P Manual de usuario

Full Boar

Full Boar FBT-3300 Manual de usuario

Dwyer Instruments

Dwyer Instruments ASG Manual de usuario

Westinghouse

Westinghouse WH1000i Series Manual de usuario