TRILECTRON 90T400SLN User manual

Property of American Airlines

Operator

iE90T400sLN

lIIGROUND POWER

UNIT

CHAPTER

SECTION

OPERATION

1. CONTROLS

ANDINDICATORS

Priortooperating

the

GPU,

personnel

must

become

thoroughly

familiar

withtheoperating

controls,indicatorsand

procedures

described

inthissection.

Refer

tofigure1forillustrated

controllocationand

functionaldescription.

2. OPERATINGPROCEDURES

A. Pre-Operationallnspection:

CAUTION

A PRIOR.TO.USEINSPECTION

MUSTBE

PERFORMEDBEFORE

EACH

OPER,ATION

TOENSURESAFE

AND

RELIABLE

OPERATION

OFTHE

GPU.FAILURETO

PERFORM

THE

PROCEDURES

LISTEDBELOWMAY

RESULTIN

SEVEREDAMAGE

TOTHEEQUIP-

MENT. (1) Enclosure:

Inspect

for

obvious

defects,i.e.,security

ofcommon

hardware.

(2) Towbar:Excessivemovement.

(3) Brakes:Checkbrakesfor

proper

operation.

(4) Tires:Inspecttreadwear,andcheck

tireinflation

(60

psig).

(5) Enginehoses

andclamps:

Inspectforleaks

andsecurity.

(6) RadiatorCoolant:Openforwardcanopy.

Observelevelofcoolantinoverflow

container.

Coolant

shouldbe

nearthe

full

line.

Serviceasrequired

(Refer

Section2-2,Servicing).

(7) Oil

level:Openleftfront

accessdoor.

Checkthatoil

levelisatthefullmark

thedipstick,

(Refer

tosection2-2,

Servicing).

(8) Fuel

level:SetIGNITION

switchto

position,

observereadingonfuel

gauge.

Service

withfuelasnecessary.

(9) EngineAssembly:

Visually

inspectfuellinesand

fittings

for

evidence

offuel

leakage.lnspectvalve

cover,oil

pan,

andcylinder

blockfor

evidenceofoil

leakage.

(10)FanBelt:Visuallyinspect

forwearandcracking.

Check

beltfor

proper

tension.

(11)AirFilter

(Minder):

Check

FilterMinder@Indicatorlocatedtotheleft

oftheright

front

accessdoor,under

theairfilterassembly.

Replace

airfilterif

areading

25orhigher

noted

(engine

running).Recheckwhenunitisrunningunder

load.

(12)

EtherStart

(Optional):

Check

etherstartsupplycylinder

installationfor

operationalreadiness.

January

15,1999

Original 1-2

Page1

Property of American Airlines

iE90T400sLN

IJIGROUND POWERUNIT

s-t ///1 \\ ///r \\ \wz i

Fi ir., ll t

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Iil'

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Hi iHil

Hlgiiriiiii

Figure1.Engine/Generator

Control

Panel

(Typical)

-SingleAC

UnitShown

January15,

1999

Original

1-2

Page2

Property of American Airlines

it90T400SLN

lIIGROUND POWER

UNIT

2. OPERATINGPROCEDURES(Continued)

B. EngineStartProcedures:

Thefollowingsteps

mustbe

performed

inthe

sequence

which

they

are

presented

(See

Figure1):

WARNING

DONOT

CONNECTLIVEPOWER

CABLETOAIRCRAFT.

SEVERE

ELECTRICAL

ARCING

MAYCAUSE

SERIOUS

INJURY,DEATHAND

DAMAGE

THE

EQUIPMENT.

January

15,1999

Original 1-2

Page

Figure

1. Control

Panel

Gomponent

tdentification

Item Description

,| CONTROL

PANEL

ASSEMBLY:

Mounted

atfront

ofelectronic

boxassembly

2ACVOLTMETER:

Shows

generator

(L-N)

output

voltage

(0-150

volts).

3FAULTINDICATORS

-GENERATOR:

Fault

indicatorswillilluminate

red

whenafault

hasoccuned.

Each

faultremoves

voltagefom the

aircraft.Overvolts

&Overload

stops

allvoltaoe

oeneration.

4AMMETER:Indicates

generator

(L-N)

output

cunent.

5FUEL

LEVELGAUGE:Indicates

amountoffuel

remaining

infuel

tank.

6OILPRESSURE

GAUGE:lndicatesengine

oil

pressure.

7FAULTINDICATORS

-ENGINE

(Red):

lndicates

tooperatorthe

protective

system

that

caused

theengine

shutdown,i.e.,

Low

oil

pressure

(10

psi

min.);

EngineOverspeed

(2550

RPM);

Engine

Over

Temperature

(225"F).

8IGNITION

ONINDICATOR

(Yellow):

Lights

whenthe

ENGINECONTROL

PO\/ERswitchisturnedon.

IWATER

TEMPERATUREGAUGE:

Indicatesengine

watertemperature

(225"F

max.).

10 BATTERYVOLTMETER:

lndicatesbatteryvoltage

condition.

Donot

startunitifvoltage

islessthan:10V

12V

units

and20Von24Vunits.

11 HOURMETER:

Indicatestotalenginerun

time.

12 START

S\MTCH:Startsengine.Pushbutton,

momentarycontact

switch.

13 FAULT

LAMP

TEST

(Pushbutton):\Mren

pressed

while

unitisin

theRUNmode,itlightsallfaultslamps.

When

pressed

whiletheiqnitionswitchisintheON

position.

itwill

liohtonlvtheenqinefaultlamps.

14 IGNITIONSWTCH

(ON/OFD:

position

suppliesstartino

andcontrollinovoltaqes

enoinecircuits.

15 PANEL

LIGHTSSWTCH:

Tums

panel

liohts

Onforniohttimeooeration.

16 RUN/IDLESWTCH:Two

position

switch.Controlsengine

speed.

IDLE

position

forstarting.

RUN

position

for

oeneratorooeration.

17 AMMETERSWTCH

(Rotary):

Measurescunent

phases

'1.2

or3.

18 FREQUENCYMETER:Shows

qenerator

outputfrequencv

(360-440H2).

19 AC

LOAD

CABLEON

(Push-button):

Supplies

powerto

output

Cable1

(single

and

dualAC

outputunits).

Used

inconjunctionwithINTERLOCI(BY-PASSswitch.\Mren

ONispushed

withINTERLOCK

setting,

GPU

provides

momentary28Y DCtoaircraftconnector

pins

E&F.

LOAD

CABLE

ON:SuppliesAC

powerto

outputCable

2.Onlyonunits

withdualACoutput

(See

figure

4,Sect.1-1)

20 ACLOADCABLEOFF

(Pushbutton):

Removesoutput

powerfrom

cablel

(single

anddualAC

outputunits).

LOAD

CABLE

OFF(Push-button)

Removesoutput

power

fromcable

OnlyonunitswithdualAC

out-

put.(See

figure

Sect.1-l)

21 VOLTMETERS\MTCH:Selectseither

LinetoLineorLinetoNeutralvoltage

measurements

toshowonthe

voltmeter.

Property of American Airlines

ffigOTAOOSLN

IIIGROUND POWER

UNlr

Figure

2.Control

Panel,Shown

inthe

Open

Position.

Figure

28.

Control

Panel,

Top

Center.

NOTE: Gauge

lights

automatically

comeON

when

lgnition

switch

isON.

TurnPanel

Lights

using

the

PanelLight

switch.

1-2

Page

4January

15,1999

Original

-^^

rtd) \

w$-c

Figure2A.Control Panel,Top Left.

Property of American Airlines

iHe0T400sLN

.EI GROUND

POWER

UNIT

ffi:;* #,

'rtt'

Figure2C.Control

Panel,

Right

Side.

WARNING

PROLONGED

EXPOSURE

TOHAZARDOUS

NOISE

LEVELS

MAY

RESULTIN

PERMANENTHEARINGLOSS.

EARPROTECTION

DEVICES

MUST

BEWORN

WHENWORKING

INCLOSE

PROXIMITYTOTHIS

EQUIPMENT.

(1) Set

ENGINEIGNITION

SWTCH

(14)

ON.IGNITION

indicator

(8),

and

canopy

mounted

yellow

flashing

beaconwillbe

illuminated.

(2) SetIDLE/RUNswitch

(16)

toIDLE.

CAUTION

BATTERYMUSTBE

FULLY

CHARGED

SUPPLYVOLTAGE

FORENGINE

STARTINGAND

CONTROL.

(3) ObservetheVOLTMETER

gauge

(10)

onthe

Engine

ControlPanel,charge

batteryifalowvoltageisindicated.

CAUTION

DONOTHOLD

START

BUTTON

DEPRESSEDFORLONG

PERIODS

TIME,AS

THISDEPLETESTHE

BATTERYANDCOULDDAMAGE

THE

STARTER.

(4) Press

START

pushbutton

(12)

for1-2seconds

tostartengine.

Engine

will

comeuptoidlespeed. CAUTION

IFLOWORNO

OIL

PRESSUREISINDICATED

AFTER10.15

SECONDSOF

OPERATION,

IMMEDIATELY

STOP

ENGINEBY

SETTINGENGINEIGNITION

swrTcH (13)

OFF.

FATLURETOCOMPLYCAN

RESULTrN

SEVERE

ENGINEDAMAGE.

(5) OIL

PRESSURE

gauge

(6)

shouldread

psi

minimum

pressure

atidle

speed,

psi

minimumatrunspeed.

January

15,1999

Original 1-2

Page5

Property of American Airlines

=.HgOT4OOSLN

lJf cRouNDPowER

uNtr

(6) WATER

TEMPERATURE

gauge

(9)

indicates170

to195'F

whenengine

has

warmed.

(7) VOLTMETER

gauge

(5):

Voltageshould

beatleast

12VDC

(12V

units)or

VDC

(24

VDC

units)

.CAUTION

NOT

ALLOWTHE

ENGINE

TOIDLEFORLONGPERIODS

OFTIME.FAILURE

COMPLY

COULD

RESULTINENGINE

DAMAGE.

(8) Let

theengineidlefor

2-3

minutestowarmengine.

1-2

Page

6January

15,1999

Original

Property of American Airlines

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