Veolia Hydrotech Technical document
Appendix
HydrotechDrumfilterHPC
Highpressurecleaningsystem
R
e
vised:
2
2
/04/2015
E
N
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ppendix, Hydrotech DrumfilterHPC
LISTOFCONTENTS
1.
INTRODUCTION
..........................................................................................................................................3
2.
HYDROTECHDRUMFILTERHPC(HIGHPRESSURECLEANINGSYSTEM)
...............................................3
2.1
Overview
....................................................................................................................................................3
2.2
Highpressurepump
..................................................................................................................................4
2.3
Functionaldescription
..............................................................................................................................4
2.4
Startupandoperation
.............................................................................................................................5
3.
MAINTENANCESCHEDULE
........................................................................................................................8
2
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1.
INTRODUCTION
ThisappendixcontainsinstructionsfortheHydrotechDrumfilterHPC(Highpressurecleaning
system.
2.
HYDROTECHDRUMFILTERHPC(HIGHPRESSURECLEANINGSYSTEM)
2.1
Overview
1.
Electrical actuator
2.
Profile beam
3.
Slide block
4.
Backwash pipe
5.
Back pressure valve or solenoid valve (optional)
6.
Connection point for high pressure washer
7. High pressure hose
8. Spray nozzle
1
2
3
4
5
6
7
8
3
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ppendix, Hydrotech DrumfilterHPC
2.2
Highpressurepump
TheHPCsystemshallbeconnectedtoahighpressurepumpdimensionedtoprovide8,2l/minat
80bar.Itisrecommendedtouseahighpressurepumpwithpossibilitytoadjustthepressure.The
highpressurepumpisnotincludedintheHPCsystemasstandardbutcanbesuppliedupon
request.
Remark:Pressuresabove80barwillcauseexcessivewearonthefiltermedia.
2.3
Functionaldescription
Function:
TheHPCsystemisdesignedtoreducetheneedforchemicalcleaningofthefilterpanels.Itisa
systemthatoperatesatmaximum80barpressure.Twohighpressurebackwashnozzlescleanthe
filtermediaduringrotationofthefilterdrum.Thebackwashnozzlesareassembledonabackwash
pipemountedonaslideblock.Theslideblockispositionedbythemeansofanelectricalactuator.
Thesystemisequippedwithabackpressurevalveorsolenoidvalve(optional)topreventflowthru
thespraynozzleswhenthesystemisinstandby(applicablewhenapressurizedfeedsystemis
used).AHighpressurepump(optional)canbesupplieduponrequest.
Backwashsequence:
WhentheHPCsystemisactivatedthefilterdrumstartstorotate.Thehighpressurepumpstarts
andpressurisedwaterflowthruthespraynozzlesviathehighpressurehoseandbackpressure
valve.Forsystemsequippedwithsolenoidvalve(optional),thevalveshallopenpriortothestartof
thehighpressurepump.Thespraynozzlescleanonesectionofthefilterpanelsduringrotationof
thefilterdrum.Whenthespraynozzleshavecleanedthecurrentfilterpanelsectiononthefilter
drumforonerevolution,theelectricalactuatormovestoitsouterpositionandbacktoitsinner
positionagain.Theslideblockhasnowmovedtothenextfilterpanelsectiontoclean.Whenthe
spraynozzleshavecleanedthisfilterpanelsectiononthefilterdrumforonerevolution,the
electricalactuatorisactivatedagain.Thenthisprocedureisrepeateduntilthewholedrumhas
beencleaned.Thehighpressurepumpstopsfollowedbythestopofthedrumrotation.For
systemsequippedwithsolenoidvalve(optional)thesolenoidvalvecloseswhenthepressureinthe
HPCsystemhasdropped,followedbythestopofthedrumrotation.
Remark:
Installation(electrical/mechanical)anduseoftheincludedcomponentsmustfollow
manufacturers’recommendationsandmustbeperformedbyauthorizedpersonnel.Local
regulationsmustbefollowed.
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2.4
Startupandoperation
1.
Checktheequipmentfortransportdamage
2.
Removethetransportlockingdevice
3.
Removethespraybarbracketfromtheslideblock.
4.
Makesurethatthebalanceweightinsidetheslideblockispositionedtowardstheservicerecess
intheprofilebeam.
Movingdirection
5
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5.
Pushtheslideblocktotheservicerecessandliftouttheslidblockfromtheprofilebeam.
6.
Measuretheinnerpositionoftheactuator.
Thebelowexampleshowsthemeasurement30mm.
Remark:Theactuatorhaveamaximumstrokeof100mmanditisimportantthattheactuator
strokeisadjustedsothatitcanneverbestalledintheinner/outerendpositionssincethiswill
causedamagetotheactuator.
7.
Makearoughadjustmentontheactuatorstrokesothatitissettoapprox.80mmwithitsinner
position10mmfromtheinnerendstopand10mmfromtheouterendstop.
Thebelowexampleshowsthemeasurements40mm(innerposition)and120mm(outerposition).
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8.
Makethefineadjustmentontheactuatorstrokesothatitissetto97‐99mmwithoutanystallingin
theinner/outerendpositions.
Thebelowexampleshowsthemeasurements31mm(innerposition)and129mm(outerposition).
9.
Placetheslideblockintheprofilebeamandredirectthebalanceweightsothatitispositioned
towardsthespraybarbracket.Pushtheslideblockbacktothespraybarbracketandassemblethe
spraybarontheslideblock.
10.
Pushtheslideblock“backwards”untilitstops.Notethebalanceweightposition.
11.
Runtheactuatorsequenceandmakesurethattheslideblockmovesproperlyandthatthestrokeis
97‐99mmwithoutstallingintheinner/outerendpositionsaccordingtoaboveinstructions.Ifthe
strokeislessthan97mmmakeadjustmentstoreachtherecommendedvalues.
Remark:Ifthestrokeislessthan97mmitcancausedamagetotheequipment
12.
Connectthehighpressurepumpandrunthefullhighpressurecleaningsequencewithtapwater.
Movingdirection
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3.
MAINTENANCESCHEDULE
Check/Action
Maintenanceinterval
Visually inspect the system for worn out or
damaged parts
T
w
icea monthor another interval based
on experience from the application in
question.
Check for foreign objects interfering with the
drive rail/slide block
T
w
ice a month or another interval
based
on experience from the
application in
question.
Check the nozzles with respect to clogging.
When cleaning is required remove the nozzle tip
from the spray bar and use compressed air or a
plastic brush to clean the nozzle tip. Never use a
wire brush, metal pins or similar as these can
damage the nozzle
T
w
ice a month or another interval
based
on experience from the
application in
question.
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ppendix, Hydrotech DrumfilterHPC
Hydrotech AB, A Veolia Solutions &
Technologies Company
Mejselgatan 6
SE-235 32 Vellinge
Sweden
Copyright
©
All rights reserved
Telephone: +46 (0)40 - 42 95 30
Fax: +46 (0)40 - 42 95 31
E-mail: mailbox@hydrotech.se
Website: www.hydrotech.se
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