Installation Procedure; Start- Up Instructions; Installation Scheme - ITRON RB 4700 Serie Inbetriebnahmeanleitung

Installation Procedure

(A)  R emoveprotectivecoversfrominletandoutlet
ofregulatorBothregulatorandtubingmustbe
cleaninordertoavoiddamage
(B)   I nstalltheregulatorontothepipe,makingsure
thatarrowonthebodyfitswiththedirectionof
flow
(C)  C onnectcontrollinesofregulatorandshut-off
valvetoaturbulence-freezoneontothedown-
streampipeAmanometershouldalsobecon-
nected downstream the regulator It may be
necessarytoinstalllargerdiameterpipeonthe
downstreamsidetolimittheflowvelocity
(D)  C heckallconnectionsbetweenregulator,safety
shut-offvalveandpipefortightnessIfsoapso-
lutionsareusedforchecking,dryregulatorthor-
oughly
(E)  F orsettingthedownstreampressureturnclock-
wiseoranticlockwisedirectionthescrewonthe
topofthepilot
Caution:in addition, the regulator must be installed
according to good engineering practice. The installa-
tion must also comply with national and/or interna-
tional standards.

Start- up Instructions

Caution:before start-up, the installation must be
checked for leaks.
Tostart-uptheregulatorproperly,proceedasfollows
accordingtotheinstallationschemeshown
below:
(1)  c heckthattheupstreamanddownstreamvalves
andthebleedcockareclosed;
(2)  i ftheapparatusisfittedwiththeshut-offvalve,
theshut-offvalvemustbeclosed;Afterverifying
theabovementionedpoints,proceedasfolows:

Installation Scheme

(A)  o pentheupstreamstopvalve(1)slowlyand
justenoughtoensureaverysmallflowofgas;
checktheupstreampressuregauge(2);
(B)  r esettheshut-offvalve(seesection„Resetting
oftheshut-offvalve");
(C)  c heckthatthedownstreampressureisrising
slowlyonthedownstreammanometer(7or
10):thedownstreampressureshouldstopat
the set pressure value or on a value a little
higher;
(D)  w hentheupstreampressureisalsostabilised,
slowlyopentheupstreamstopvalve(1)toa
fullopenposition;
(E)  t henslowlyopenthedownstream1 1valve(8
or1 1)or;
AtthispointtheregulatorisinoperationLike-
wisetheprocesscanbefollowedfortheinstal-
lation of a monitor regulator in line with the
regulator(seeinstallationscheme),keepingin
mind that the manometer (7) installed be-
tweentheregulatorshastoindicatethesame,
orlittlehigher,pressurevalueastheupstream
manometer
Maintenance
Maintenanceisextremelydependantonthequal-
ityofthegasused(humidity,impurities,gasoline)
andtheefficiencyofthefilterusedupstreamofthe
regulator:itisrecommendedtoinstallupstreamof
the regulator a filter, which traps solid and liquid
particlespresentinthefluidthatwouldotherwise
impairtheproperfunctioningoftheapparatusDe-
pendingonthegasmoisturecontent,contamina-
tionandchemicalcomposition,occasionalclean-
ingmayberequired
Caution:before any service operation, be sure that
upstream stop valve is closed and the gas installa-
tion is de-pressurised.
Item
Description
1 UpstreamStopvalve
2 Manometer
3 PilotRegulatorMonitor
(Shut-offValve:PilotRegulator)
4 MonitorRegulator
(Shut-offValve:Regulator)
5
Shut-offDevice
7 Manometer
8 PilotRegulator(Shut-offValve:
DownstreamStopvalve)
9
Regulator
10 Manometer
1 1 DownstreamStopvalve

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