Operation
13.Whenthewaterlevelreachesthebungseal,
rotatethehandletoreleasethebungpin(this
willcausethebungtopopupagainsttheseal
andclosethebung).
14.TurntheselectorvalvetoFILL.
NOTE: NOTE:
NOTE:Thewaterpumpshouldbegincycling.If
not,openthepotpressureregulatorenoughto
causethepumptorunat60cpm.
NOTE: NOTE:
NOTE:Theautovent/purgevalvewillallowall
oftheairtrappedinthetopofthepottovent.
Whenairstopsventing,thepotpressuregauge
willstarttoregisterpressure.
15.Waitforpotpressuretoincrease.NOTE: NOTE:
NOTE:It
cantakeuptoseveralminutesforthepotto
pressurize.
ti24824a
NOTE: NOTE:
NOTE:Thebungcannotbepusheddownunless
allofthepressureinthepotisreleasedby
openingthedumpvalve.
16.Setthepotpressure30psi(2.0Bar,0.2MPa)
higherthantheintendedblastpressure.Quickly
openandclosethedumpvalveafterthepump
stalls.Relievepotpressureto40psi(2.7Bar,
0.27MPa)beforeclosingthedumpvalve.
Repeatuntilpotpressureisconsistent.
17.TurntheselectorvalvetoWASH.
18.Settheblastairpressure30psi(2.0Bar,0.2
MPa)lowerthanthepotpressurewhileblasting.
NOTE: NOTE:
NOTE:Inordertoadjusttheblastpressure,the
blastcontrolmustbeengaged.Fortheinitial
setting,leavetheabrasiveballvalveclosed.
NOTE: NOTE:
NOTE:Engageandreleasetheblastcontrol
handleeachtimetheblastregulatorisadjusted.
19.TurntheselectorvalvetoBLAST.
334667B 13