Meech 915EX Manuale utente

Model 915EX

Shockless AC Bar

Operating

Manual

Contents

Introduction 3

Certication      3

Inspection 4

SpecialConditionsforSafeUse    4

Operation      5

Installation      6

TechnicalandConstruction    9

Maintenance      10

FaultFinding      11

RepairsandWarranty     14

CEApproval15

HealthandSafety15

Productsshowninthisdocumentmaybecoveredbyoneormorepatents,patentsappliedfor

and/orregistereddesignsand/ortrademarks.ForfurtherinformationpleaserefertoourHead

O󰀩ceorvisitwww.meech.com.

©MeechStaticEliminatorsLtd.,27.10.17

Introduction

TheMeechModel915EXhasbeendesignedforuseonthemostarduousstatic

eliminationproblems.Thespecialresistivecouplingofitsemitterpinsrendersthem

shockless,whilstgivingpowerfulstaticneutralisationperformance.Thisenablesthe

bartoeliminateveryhighstaticchargesonhighspeedwebsandatlongerrangesthan

haspreviouslybeenpossible.

Certication

ECtypeexaminationcerticateNo:

BASEEFA04ATEX0347X

Meech International Ltd

Witney, Oxon, OX290YN, UK

tel:+44 1993 706700; Fax:+44 1993 776977

e-mail:[email protected]; web:www.meech.com

915Ex

dims 77.5 x 18mm

Cool Gray 1

Gas group IIB, temp Class T6 (T85

T amb -20 to +35

C. IP65

Model:

915Ex

1180

II 2 GD EEx m

Baseefa: 04ATEX0347X

Hyperion 915Ex

operating manual

Inspection

TheModel915EXBarwascarefullypackedatthefactory.Nevertheless,we

recommendcarefulexaminationofthecartonandcontentsforanydamage.Ifdamage

isevident,keepthepackingmaterialandimmediatelynotifythecarrierofapossible

damageclaim.Shippingclaimsmustbemadebytheconsigneetothedelivering

carrier.

SpecialConditionsforSafeUse

1. TheModel915EXmustbeusedinconjunctionwithaMeechType904power

supplyor904CMsystem.

2. Thepowersupplyshallbeprotectedbyafusecapableofwithstandinga

prospectiveshortcircuitcurrentof4000A

3. Theusermustdetermine,inconsultationwithMeech,thesuitabilityofthe

apparatusforusewithanysolventspresentattheapplication.

4. Whenusedindustyenvironments,theequipmentmaynotbeusedinassociation

withdustshavinganelectricalresistanceequaltoorlessthan103 Ohm

5. Whenusedindustenvironments,theequipmentmaybeusedonlywithdusts

 requiringanignitionenergyofgreaterthan0.2m.J.

6. Theusermustdetermine,inconsultationwiththemanufacturer,thesuitabilityof

 theapparatusforusewithparticularsolvents.

Operation

ThetypicalMeechModel915EXinstallationconsistsofoneormorebarsconnected

toaMeechModel904PowerUnit.

ThePowerUnitconvertstheelectricalsupplyintoahighvoltage,lowamperage

output.Thisoutputenergyistransferredtothe915EXbarbytheHTcable.

TheresistivelycoupledelectrodesareenergisedbytheACvoltagefromthePower

Unit.Theelectrodesemitthisenergy(coronadischarge)intheformofafieldof

ionisedair.Thisionisedairsuppliesionsofbothpolarities.

Electrostaticallychargedproductswhichpassthroughthiscoronaareimmediately

neutralisedandbecomestaticfree.

Undertestconditions,theMeechModel915EXhasbeenfoundtogivechargedecay

timesthatareuptoeighttimesfasterthanstandardACshocklesseliminatorbars. 5

Installation

The915EXBarcanbeplacedbetween25mmand150mmfromthesurfacetobe

neutralised.Itisimportanttoensurethatthesurfacetobeneutralisedhasfreeairon

bothsidesandthatearthedmetalobjectsare,wherepossible,atleast20mmaway

fromthebar.Theseprecautionswillmaximisetheunit’sionisationcapability.

Goodresultscanbeachievedatdistancesupto150mmbutasthedistancefromthe

objectincreases,thespeedofchargeneutralisationwilldecrease.

Atypicalinstallationdistanceis50mmfromthetargetsurface.Thisgivesexcellent

performanceathighweborproductspeeds,whilstavoidingpossibledamagefrom

webbreaksorproductmis-feeds.Veryfastwebsmayrequirethebartobeasclose

as25mmtotheweb.

Correctpositioningofthebar(s)isvitaltoefficientoperation.Thefollowingdiagrams

showthecorrectinstallationprocedures:

1.Theoptimaldistancefrommaterialtobeneutralised.

Mountingofthebarisby20mmM4studsmountedinatrackattherearofthebar.

Thesecanbeslidtoanypointalongthebar’slengthtomeetthemachine’savailable

fixingpoints.

Thechassisofthebariselectricallyconnectedtogroundonthepowerunitviathe

flexiblearmouredconduit.However,itisgoodpracticetoprovideasecondary

groundingthroughthefixingpointswherepractical.

TheHTcableandarmouredconduitrequireconnectiontoaMeechmodel904power

unit.Pleaseconsultthe904instructionmanualforfurtherinstruction.

NB:Meechmodel904powerunitisnotATEXratedandhencemustbemounted

outsidethehazardouszone.Forthisreasonastandard5mHTcableisprovidedbut

thiscanbeextendeduponrequest.

1. Freespaceisrequiredonoppositesidesofthetargetmaterial,notarollerorsolid

object.

2. Avoidproximitytoearthedpartsofmachineryasthiswilldistortthecoronaand

reduceitse󰀩ciency.

3. Ifbarsareneededonbothsidesofthematerial,theyshouldbe

staggered.

4. Thebarsmustbeearthedforcorrectoperation.Ifinanydoubtrunanearthwire

fromthebartotheearthstudonthePowerUnit.

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