PressureReliefProcedure
Pressure Pressure
Pressure
Relief Relief
Relief
Procedure Procedure
Procedure
FollowthePressureReliefProcedure
wheneveryouseethissymbol.
Thisequipmentstayspressurizeduntilpressure
ismanuallyrelieved.Tohelppreventserious
injuryfrompressurizeduid,suchassplashing
uid,followthePressureReliefProcedurewhen
instructed.
1.Closetheabrasiveballvalve(M).
2.Closethecompressorsupplyairvalve,thenturn
thecompressoroff.
3.Engagetheblastcontrolswitch(B)torelieve
pressureinthesystem.
4.Verifythatthesupplypressuregauge(ZC)reads
0psi.Thendisconnecttheairinlethosefromthe
system.
5.Turntheselectorvalve(W)toBLAST.
6.Openthepotdumpvalve(J)untilthepot
pressuregauge(L)reads0psi.
Grounding Grounding
Grounding
(ATEX (ATEX
(ATEX
systems systems
systems
only) only)
only)
Theequipmentmustbegroundedtoreducethe
riskofstaticsparking.Staticsparkingcancause
fumestoigniteorexplode.Groundingprovidesan
escapewirefortheelectriccurrent.
Systems: Systems:
Systems:
Usesuppliedgroundwireandclamp
(237686).
Air Air
Air
and and
and
uid uid
uid
hoses: hoses:
hoses:
UseonlygenuineGraco
conductiveblasthoseswithamaximumof150ft(45
m)combinedblasthoselengthtoensuregrounding
continuity.Checktheelectricalresistanceoftheblast
hoses.Ifthetotalresistancetogroundexceeds29
megaohms,replacetheblasthoseimmediately.
Air Air
Air
compressor: compressor:
compressor:
followmanufacturer’s
recommendations.
10 3A3489E