General Technologies Corp GTC505 User manual

User’s Handbook

ENGINE IGNITION ANALYZER

Table of Contents

1. Safety Rules Page 1

2. Technical Specications Page 2

2.1 Generalspecications     Page2

2.2 Electricalspecications    Page2

3. General description Page 3

3.1 Instrumentdescription     Page3

3.2Displaydescription     Page3

4. Buttons, icons and menus operation Page 4

4.1POWER/CLEARbuttonandmenu   Page4

4.2CYCLEbuttonandmenu    Page4

4.3 MODEbuttonandmenu    Page5

4.4VIEWbuttonandmenu    Page5

4.5HOLDbuttonandmenu    Page6

4.6Tachometerreadings     Page6

4.7Batterylevelindicator     Page6

5. Measurement modes Page 7

5.1EngineRPM      Page7

5.2Sparkburn(ring)time    Page7

5.3 Sparkplugvoltage     Page7

5.4Dwellangle      Page7

5.5Ramptime      Page7

6. Display views Page 8

6.1Chartview      Page8

6.2Comparisonview     Page8

6.3 Digitalview      Page9

6.4WaveformView     Page10

7. Measurement procedures Page 11

7.1Flexibleprobeandpick-upsetup   Page11

7.2Measuringcoilonplugandcoilnearplugignitionsystems Page11

7.3Measuringignitionsystemswithsparkplugwires  Page12

8. Recharging the instrument Page 13

9. Maintenance Page 14

10. Warranty Page 14

1. SAFETY RULES

•

Thisinstrumentisdesignedforindooruseattemperaturesbetween32°and104°F(0°Cand

40°C)andaltitudesupto6500ft(2,000meters).

•

 Toensurethattheinstrumentisusedsafely,followallsafetyandoperatinginstructionsinthis

operationmanual.Iftheinstrumentisnotusedasdescribedinthisoperationmanual,thesafety

featuresofthisinstrumentmaybeimpaired.

•

 Donotusetheinstrumentiftheinstrument,thepick-upsortheexibleprobelooksdamaged,

orifyoususpectthattheinstrumentisnotoperatingproperly.

•

 Whenusingtheinstrument,keepawayfrommovingparts(fan,drivebelts,etc)andhotobjects

(exhaustpipes,mufer,catalyticconverter,etc),toavoidpersonalinjuriesanddamagetothe

instrument,thepick-upsandtheexibleprobe.

•

 Donotconnectanythingotherthatthepick-upssuppliedwiththeinstrumentorapplymore

thanACorDCpowertothepick-uportheexibleprobeconnectors.

•

 Atalltimes,toavoidelectricalshock,useCAUTIONwhenworkingwithelectricalcircuitsabove

60VDCor25VACrms.Suchvoltagesposeashockhazard.

•

 DonotoperatethisinstrumentwhileconnectedtotheACpoweradaptororanyotherdevice.

•

 Toavoidelectricalshockordamagetotheinstrument,donotexceedthespeciedinputlimits.

Exceeding the limits listed above when using this apparatus, or not observing the

precautions listed above can expose you to physical injury and permanently damage

your instrument and/or parts and components of the vehicle under test.

Page2

2. TECHNICAL SPECIFICATIONS

2.1 General specications

Display: 3.5”TFTLCD,320x240pixelsresolution.

Framerate: Upto30timespersecond.

Ignitionsystemcomp.: Coilonplug,coilnearplug,DIS,wastespark,conventional,

andmagneto.

Enginecycle: 2or4strokes.

Power(internal): 3.2volt/1500mAh,rechargeableLiFePO4battery.

Autopoweroff: Automaticallypowersoffafter3min.ofinactivity.

Batterylife: Approximately6hoursofcontinuousoperation.

USBconnector(input): MicroUSB(5Volt/0.5AmperesDC).

Probelength: 13.5”(34cm)includingpick-up.

Dimensions: 6.3”x3.9”x1.3”(160x99x34mm)withoutprobe.

Weight: Approximately14oz.or406gwithoutprobe.

Includedaccessories: Sparkplugwirepick-up,coilonplugpick-up,BNCexibleprobe,

protectiverubberholster,paddedhardcarryingcase,microUSB

cable,ACpoweradaptoranduser’shandbook.

2.2 Electrical Specications

•

Thespecicationsbelowaretypicalat23°C,andwillvaryslightlyfromdevicetodevice,

and with temperature.The input voltage should not exceed the indicated maximum

values,topreventpersonalinjuryordamagetotheinstrument.

MeasurementMode MeasurementRange Accuracy/Resolution

Tachometer

400to19999RPM

2and4cyclesandDIS

Accuracy:0.5%±1LSD

Sparkplugvoltage(kV) 0to50kV Resolution:±0.01kV

Sparkburn(ring)time 0to12ms Resolution±0.05ms

Dwellangle

0to>270°(4stroke/600RPM+)

0to>180°(2stroke/750RPM+)

Resolution:±0.1º

Ramptime(Ignitioncoil

primarycurrentramptime)

0to35ms Accuracy:±0.05ms

Page3

3. GENERAL DESCRIPTION

3.1 Instrument Description

3.2 Display description

Fig.1-Instrumentdescription

Fig.2-LCDDisplay

01607 RPM

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Enginecycle

setting

Mode

setting

Display

setting

Tachometer

reading

Battery

level

Statusindicators

Measurement

displayarea

MicroUSBconnector

LCDdisplay

POWER/CLEARbutton

CYCLESbutton

MODEbutton

BNCconnector

Protectivehoster

HOLDbutton

VIEWbutton

Page4

4. BUTTONS, ICONS AND MENUS OPERATION

4.1 ‘POWER/CLEAR’ button

•WhentheinstrumentisOFF,toturnitONpressandholdthe‘POWER/CLEAR’

buttonuntiltheunitturnson(inapproximately1second).

•WhentheinstrumentisON,toturnitOFFpressandholdthe“POWER/CLEAR’

buttonuntilthedisplayturnsOFF(inapproximately3seconds).

•When the instrument is ON, press the ‘POWER/CLEAR’ button to clear all

measurementdata,andstartanewmeasurement.Thisoperationcanbealso

beperformedtore-scalethemeasurementsandoptimizeviewinginthedisplay.

•The ‘AutoPowerOff’feature will automaticallyturntheinstrument offafter 3

minutesofnobuttonbeingpressedor15secondsafterthelastsparksignalwas

detected.Turningtheunitoffmanuallywhennotinusewillprolongbatterylife.

4.2 ‘CYCLE’ button and menu

• The‘CYCLE’buttonallowsselectionofthenumberofstrokescorrespondingto

theengineundermeasurement.Uponpressingthisbutton,apulldownmenu

willopenwiththecurrentsettinghighlighted,Tochangethesettingpressthe

‘CYCLE’buttonrepeatedlyuntilthecorrectsettingishighlighted,thenwaituntil

thepulldownmenucloses.Thenewsettingwillbedisplayedasthecycleicon

atthetopofthescreen.

01607 RPM

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-4 -2 0 2

4 Stroke

2 Stroke

Waste Spark

Fig.3-Enginecycleselectionmenu

2strokeenginecycle

4strokeenginecycle

DISorwastesparkignitionsystem

Page5

4.3 ‘MODE’ button and menu

 The ‘MODE’button allows the selection of the type of measurement to be

showninthedisplay.Uponpressingthisbuttonapulldownmenuwillopenwith

thecurrentsettinghighlighted,Tochangethesettingpressthe‘MODE’button

repeatedlyuntilthedesiredsettingishighlighted,thenwaituntilthepulldown

menucloses.Thenewcurrentsettingwillbedisplayedasthemodeiconatthe

topofthescreen.

01607 RPM

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-4 -2 0 2

Burn Time

Dwell

Tachometer

Voltage

Fig.4-Measurementselectionmenu

Measuring/displayingsparkburn(ring)time.

Measuring/displayingdwellangleorramptime(automaticallyselected

dependingontheconnectedsensor).

Measuring/displayingRPM(tachometer).

Measuring/displayingsparkplugvoltages.

4.4 ‘VIEW’ button and menu

 The’VIEW’buttonisusedtoselecthowthechosenmeasurementwillbe

showninthedisplay.Uponpressingthisbuttonapulldownmenuwillopen

withthecurrentsettinghighlighted.Tochangethesettingpressthe‘VIEW’

buttonrepeatedlyuntilthedesiredsettingishighlighted,thenwaituntil

thepulldownmenucloses.Thenewsettingwillbedisplayedasthedisplay

iconatthetopofthescreen.

Page6

01607 RPM

-10

-4 -2 0 2

Chart

Comparison

Digital

Waveform

Fig.5-Displaymodeselectionmenu

Chart(i.e.trendline)view.

Comparisonview.

Digitalandanaloggaugereadouts.

Waveform(i.e.oscilloscope)view.

4.5 ‘HOLD” button

· Whenchart,digitalorwaveformdisplaymodeisselected,pressingthe‘HOLD’

buttonwillpausethemeasurement,holdthecurrentdisplay,andtheword

“HOLD”willbeshowninthemeasurementareaofthedisplaytoindicatethis

status.Pressthe‘HOLD’buttonagaintoresumenormaloperation.

· Wheninthecomparisondisplaymode,thisbuttonisusedtoinitiateandstopa

measurement.Fordetailssee‘6.2Comparisonview’.

4.6 Tachometer reading

DigitalreadoutoftheengineRPM.

4.7 Battery level indicator

Thebatterylevelindicatorprovidesanapproximateindicationofthestateofchargeof

theinternalbattery,asfollows:

Full

Empty

NOTE: Theinstrumentwillturnautomaticallyoffifthebatteryvoltagefallsbelowthe

absoluteminimum.

Page7

5. MEASURING MODES

There are four different ignition system parameters that can be selected for

measurement,dependingontheengine’signitionsystem:

•EngineRPM.

•Sparkburn(ring)time.

•Sparkplugvoltage.

•Dwellangles(forignitionsystemsequippedwithhighvoltagesparkplugwires).

• Primaryignitioncoilcurrentramptime(forcoilonplugandcoilnearplugignitionsystems).

5.1 Engine RPM

MeasuresengineRPM(revolutionsperminute)in2and4strokeengines,andmaybe

usedincombinationwithothermeasurementstoevaluateignitionsystem

performanceatdifferentenginespeeds.

5.2 Spark burn (ring) time

The spark burn time, also called “ring time”, is the measurement of the period from

themomentasparkisinitiateduptothepointwhenitisextinguished,andisthemost

indicativemeasurementofperformanceoftheignitionsystem.Abnormallylongorshort

burntimesmayindicatesomeproblemintheignitionmodule,sparkplug,fuelmixture,

cylindercompression,etc.

5.3 Spark plug voltage

Sparkplugvoltagevaluesareusefulforcomparingtheperformanceoftheignitionsystem

betweencylinders.Thismaybeusedtodiagnosecommonproblemslikemisres,broken

sparkplugwires,etc.Sparkplugpeakvoltagesmayvarywidely,arelessconsistentand

notalwaysindicativeofaproperlyworkingignitionsystem.Ontheotherhand,observation

ofthesparkplugvoltagewaveformortrendmayproveusefulindiagnosingignitionand

mechanicalproblems.

5.4 Dwell angle (for ignition systems using spark plug wires only)

Dwellangleisameasurementoftheangleofrotationofthecrankshaft,betweenthemoment

inwhichtheprimaryoftheignitioncoilisenergized(e.g.pointcontactsclosed)andthe

sparkisgenerated(e.g.pointcontactsopened).Itsmainuseisindeterminingifthereis

enoughangle(ortime)toenergizetheprimaryoftheignition,andnotsomuchastocause

theignitioncoiltooverheatandfail.Dwellanglesarespeciedforaparticularengineand

RPM,andusuallyadjustedinthemechanicaldistributor/pointassembly.

5.5 Current ramp time (for coil on plug and coil near plug only)

Ramp time is measured from when the primary coil current rst begins to increase to

whenitstopsincreasing.Thecurrentmaystopincreasingbecausethecoilhasreached

itssaturationpoint,oritisinterruptedtogenerateaspark.

Ramp timemeasurements are useful fordiagnosing problems in theprimary circuit of

theignitionmodule.Abnormallylongramptimesmayindicateexcessiveprimarycircuit

resistance,lowinputvoltage,thatthewrongmoduleisinstalled,etc.Shorterthannormal

ramptimesmayindicateashortedprimarycoil,thatthewrongmoduleisinstalled,etc.

Page8

6. DISPLAY VIEWS

Therearefourviewsthatcanbeselectedtodisplaymeasurements:

•Chart

•Comparison

•Digital

•Waveform

6.1 Chart view

Thisviewdisplaystheselectedmeasurement’svaluecorrespondingtoeachofthelast276

sparks,withtheleftmostmeasurementbeingtheoldest,andtherightmostthenewest.The

measurementscaleandunitsarelocatedontheverticalaxis,atthefarleftofthedisplay.

RPM

01607

RPM

Fig6-Chartmodedisplay

• ‘POWER/CLEAR’ button:

PressingthePower/Clearbuttonclearsallvaluesinthechart,andre-scalesthechart

ifnecessary.

• ‘MODE’ button:

Pressingthe‘MODE’buttononcewillopenthemodemenu,andhighlightthemeasurement

modecurrentlyselected;pressingthe‘MODE’buttonagainwhilethemenuisopenwill

selectthenextavailablemeasurementmode.Allfourmeasurements(sparkburntime,

RPM,sparkplugpeakvoltage,dwellangleandramptime)aresimultaneouslytracked

andstored,andareavailableforviewingatanytime(withoutdelay).

• ‘HOLD’ button:

Pressingthisbuttonwillpausethecurrentmeasurement,andholdthedisplayinitsthe

currentcondition.Pressingthe‘HOLD’buttonagainwillresumenormalmeasurement.

6.2 Comparison view

This modeallows the comparison of setsof values (minimum,average and maximum

measurements)betweenseveralcylinders,undervarioustestingconditions,andinmany

othersituations.Themeasurementsaredisplayedfromlefttoright,withtheleftmostsetof

valuesbeingtheoldest,andtherightmostthenewest.Anewsetofvaluesisaddedevery

timethe‘HOLD’buttonispressedtwice(start/stop)anduptothelast12setsofvalueswill

beshowninthegraphatonce,ifthismaximumisexceeded,theoldestsetwillbedeleted

andanewsetadded.Themeasurementscaleandunitsarelocatedontheverticalaxis,

atthefarleftofthedisplay.

Page9

01607

RPM

Maximum

Average

Minimum

Oldestset

Newestset

Fig.7-Comparisonmodedisplay

• ‘POWER/CLEAR’ button:

 Pressingthe‘POWER/CLEAR’buttonclearsallmeasurements,andre-scalesthechart

ifnecessary.

• ‘MODE’ button:

 Pressingthe‘MODE’buttononcewillopenthemodemenu,andhighlightthemeasurement

modecurrentlyselected;pressingthe‘MODE’buttonagainwhilethemenuisopenwill

selectthenextavailablemeasurementmode.Allfourmeasurements(sparkburntime,

RPM,sparkplugpeakvoltageanddwellangleandramptime)aresimultaneouslytracked

andstored,andareavailableforviewingatanytime(withoutdelay).

• ‘HOLD’ button:

 The‘HOLD’buttonwhenpressedoncepausesmeasurementandholdsthedisplay

initscurrentcondition(whiledisplayinga“HOLD”labelinthecenterofthescreen).

Pressingthe‘HOLD’buttonasecondtimewillremovethepause(andlabel),andadd

anewsetofvaluesattherightofthescreen,whichwillkeepupdatinguntilthe‘HOLD’

buttonis pressedagain.This cyclerepeats everytime thebutton ispressed twice

(start/stop)anduptothelast12setofvalueswillbeshowninthedisplayatonce,if

thismaximumisexceededtheoldestsetwillbedeletedandanewsetadded.

6.3 Digital view

Thisviewprovidesdigitalandanaloggaugereadoutsfortheselectedmeasurement,as

wellasdigitalreadoutsfortheotherthreemeasurements.

Fig.8-Digitalmodedisplay

• ‘POWER/CLEAR’ button:

 Pressingthe‘POWER/CLEAR’buttonclearsallvaluesinthegraph,andre-scalesthe

gaugeifnecessary.

• ‘MODE’ button:

Pressingthe‘MODE’buttononcewillopenthemodemenu,andhighlightthemeasurement

modecurrentlyselected;pressingthe‘MODE’buttonagainwhilethemenuisopenwill

selectthenextavailablemeasurementmode.Allfourmeasurements(sparkburntime,

RPM,sparkplugpeakvoltageanddwellangleandramptime)aresimultaneouslytracked

andstored,andareavailableforviewingatanytime(withoutdelay).

• ‘HOLD’ button:

 Pressing this button will pause measurement, and hold the display in the current

condition.Pressingthe‘HOLD’buttonagainwillresumenormalmeasurements.

6.4 Waveform View

Thismodedisplaysthesignalamplitudeovertime(likeanoscilloscope).Thescaleand

unitsofthemeasurementarelocatedontheverticalaxis,atthefarleftofthedisplay.The

timescaleandunitsareshownbelowthehorizontalaxis,atthebottomofthescreen.

01607 RPM

-10

-4 -2 0 2

Fig.9-Waveformdisplay

• ‘POWER/CLEAR’ button:

 Pressingthe‘POWER/CLEAR’buttonclearsallvaluesinthegraph,andre-scalesthe

graphifnecessary.

• ‘MODE’ button:

 Pressing the ‘MODE’ button once will open the mode menu, and highlight the

measurementmodecurrentlyselected;pressingthe‘MODE’buttonagainwhilethe

menuisopenwillselectthenextavailablemeasurementmode.Thewaveformgraph

focusesontheareaofthesparkwaveformwhichismostrelevanttothemodeselected.

• ‘HOLD’ button:

 Pressingthisbuttonwillpausethecurrentmeasurement,andholdthedisplayinthe

currentcondition.Pressingthe‘HOLD’buttonagainwillresumenormalmeasurement.

Page10

7. MEASUREMENT PROCEDURES

CAUTION

To avoid personal injuries and damage to the instrument carefully inspect the

spark plug wires, distributor cap, ignition coil , ignition module, and all other

ignition system parts for damage or leaks, and avoid using this instrument in

case any damage or leaks are found. Never touch the capacitive pick-up or

exible probe during a test.  Wear insulating gloves when working around high

voltage, and hot parts, and keep away from moving parts (fan, drive belts, etc)

and hot objects (exhaust manifold and pipes, mufer, catalytic converter, etc.)

7.1 Flexible probe and pick-up setup

Thisinstrumentissuppliedwithaexibleprobe,andtwotypesofpick-upsensors:

• Flexibleprobe:equippedwithaBNCconnectoratoneendandabarrelconnectorat

theother.

• COPpick-up:formeasuringcoilonplugandcoilnearplugignitionsystems.

• SPWpick-up:forallignitionsystemswhichusehighvoltagewires(sparkplugwires)

toconnecttheignitioncoilordistributortothesparkplug.

COPpick-up SPWpick-up

Flexibleprobe

Fig.10-Pick-upconnectiontoexibleprobe

1- ConnecttheprobetotheinstrumentusingtheirBNCconnectors.

2-InsertandrmlypresstheappropriateCOPorSPWpick-upintothebarrelconnector

oftheprobe.

NOTE: Theinstrumentwillautomaticallydetectandcongurethepick-upconnectedtothe

probe.Usingthewrongpick-upfortheignitionsystemundermeasurementmay

leadtoerroneousreadings,ornoreadingsatall.

7.2 Measuring coil on plug and coil near plug ignition systems

1-Ensuretheinstrumentisturnedoff.

2-InserttheCOPpick-upbarrelconnectorplugintotheexibleprobereceptacle,removing

theSPWpick-upifnecessary.

3- Turn the instrument on and select the appropriate cycle for the engine under

measurement.

4-Selectthedesiredmodeandview.

5- PlacetheCOPpick-uponthetopandcenteroftheignitionmodule(asshowninthe

Fig.11),andobservewhethertheinstrumentisabletodetectanddisplaythedesired

measurement.

Page11

COPpick-up Ignitionmodule

Fig.11-UsingtheCOPpick-uponaignitionmodule

6-Iftheinstrumentisunabletodetecttheignitionsystemsignal,itmaybenecessaryto

repositionthepick-upsothataconsistentsignalisdetectedanddisplayed.

NOTES

• The position of the pick-up and the particular design of the ignition module may

affect the signal’s shape shown when the waveform display is selected. In order to

comparewaveformsbetweenseveralcylinders’ignitionmodules,theplacementofthe

pick-uprelativetotheignitionmoduleshouldbekeptasconsistentaspossibleforall

themeasurements.

•In some engines, the ignition modules are located very close together, and in rare

occasions this could cause the instrument’s pick-up to detect signals from nearby

modules,leadingtoinconsistentmeasurements.Thiscanusuallybesolvedbychanging

theplacementororientationofthepick-upontheignitionmodule.

7.3 Measuring ignition systems with (high voltage) spark plug wires

1-Ensuretheinstrumentisturnedoff.

2-InserttheSPWpick-upbarrelconnectorplugintotheexibleprobereceptacle,rst

removingtheCOPpick-upifnecessary.

3-Turn the instrument on, and select the appropriate cycle for the engine under

measurement.

4-Selectthedesiredmodeandview.

5-Placethesparkplugwireintotheslotofthepick-up,andasfaraspossiblefromother

sparkplugwirestryingtomaintainarightangle(90°)betweenthepick-upandthewire.

SparkplugwireSPWpick-up

Fig.12-UsingtheSPWpick-uponasparkplugwire

6-Iftheinstrumentisunabletodetecttheignitionsystemsignal,itmaybenecessaryto

repositionthepick-upsothataconsistentsignalisdetectedanddisplayed.

Page12

Page13

NOTES

• Theabsolute sparkplug voltage readingwill dependon theposition of thepick-up,

theparticularcharacteristicsofthewire,etc..Thereforetheplacementofthepick-up

relativetothewireshouldbekeepasconsistentaspossibleforallthemeasurements

inordertocomparevoltagereadingsbetweenseveralcylinders’sparkplugwires.

•Sparkburntime,dwellangleandRPMmeasurementsarenotsensitivetotheexact

positionofthepick-uprelativetothesparkplugwire,butthepick-upmustbepositioned

sotheinstrumentiscapableofdetectingthesignal.

• When several spark plug wires are routed or bunched close together, the

capacitivepick-upmayreceivesignalsfromtwoormorewiressimultaneously,which

couldcauseerroneousmeasurements.Inthesesituationsitisnecessarytoseparate

thewireundermeasurementfromtheothers,inordertoreduceinterferenceandobtain

anaccuratemeasurement.

8. RECHARGING THE INSTRUMENT

1-Ifstilloperating,turntheinstrumentpoweroff.

2-Locateandlifttherubbercap(attachedtotheprotectiveholsterandlocatedbesides

theBNCconnector)torevealthemicroUSBreceptacle.

BNCConnector MicroUSBconnectorcap

Fig.13-Instrument’sconnectors

3-InserttheUSBchargercable’smicroUSBplugintothereceptacleoftheinstrument

matchingtheorientationoftheconnectors.

4-InserttheUSBtypeAconnectorofthecableintotheUSBportofthesuppliedUSB

powerchargeradapter,andplugthepoweradapterintoanACpoweroutlet.

5-Uponstartofchargingthebattery,thedisplaywillshowthecharginginprogressicon

andthescreenwillturnoffafterafewseconds.

CharginginprogressChargingcomplete

Fig.14-Chargingindicators

Page14

6-Iftheinstrumentisturnedon(bypressingthe‘POWER/CLEAR’button)atanytime

whileconnectedtothepoweradapter,theinstrumentwilldisplaythechargingstatus.

7-TheUSBtypeAconnectorcanbealsopluggedintoaUSBportofapersonalcomputer,

poweredUSBhub,oranyotherUSBcompliantpowersource.

5-Therechargetimewilldependonthestateofchargeofthebattery,anditmaytakeup

to6hourstofullyrechargeadepletedbattery.

NOTES

•If the instrument has not been used for a long time, or the state of charge of the

batteryhasfallentoacriticallylowlevel,aperiodofpre-conditioningofthebatteryis

automaticallyaddedtothenormalchargingcycle,whichincreasesthechargingtime

inordertorestorethebatterycapacitytoitsmaximum,Nouserinterventionisneeded,

andthisprocessisautomaticallycarriedoutbytheinstrument.

•Ifthe batteryiscompletely depleted, pressingthe power onbutton will notturn the

instrumenton,anditmustberechargedbeforeitcanbeusedagain.

9. MAINTENANCE

Keeptheinstrumentinitscarryingcasewhennotinuseanddonotsubjectittodampness

orsevereheatorcold.Donotusetheinstrumentintherain,ifitshouldaccidentallyget

wet,dryitoffwithacleanpapertowelbeforestoringitaway.

Protecttheunitfromcontactwithanysolvents.Nevercleanwithasolventorpetroleum

basedmedium such as gasoline, as these chemicals may attackthe plasticparts and

causepermanentdamage.Neveruseanabrasivecleaner.Cleaningshouldbelimitedto

wipingwithacleandamppapertowelandasmallamountofsoapifrequired.Drytheunit

thoroughlyafteranycleaning.

The unit is a sealed instrument, and contains no user serviceable parts. Opening this

instrumentwillvoidthewarranty.

10. WARRANTY

Thisinstrumentcarriesaone(1)yearwarranty(fromthedateofpurchasebytheoriginal

owner)againstdefectsofmaterialorworkmanship.FordetailsseeourStandardWarranty

Informationonourwebpageatwww.gtc.caor,requestaprintedcopy.

Part#GTC505MN1602EN

PrintedinCanada

#121-735072ndStreetTel:(604)952-6699

Delta,BC Fax:(604)952-6690

CanadaV4G1H9 email:[email protected]

“SmarTach”,“VReady”,“GTC505”and“GTC”aretrademarksofGeneralTechnologiesCorp.

Tovisitourwebsite,scantheQRcodebelowwithyoursmartphone.

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