Veolia Hydrotech Technical document

Appendix 
HydrotechDrumfilterHPC
Highpressurecleaningsystem 





























R
e
vised:
2
2
/04/2015
E
N

A
ppendix, Hydrotech DrumfilterHPC


LISTOFCONTENTS 

1.  INTRODUCTION ..........................................................................................................................................3
2.  HYDROTECHDRUMFILTERHPC(HIGHPRESSURECLEANINGSYSTEM) ...............................................3
2.1  Overview ....................................................................................................................................................3
2.2  Highpressurepump ..................................................................................................................................4
2.3  Functionaldescription ..............................................................................................................................4
2.4  Startupandoperation .............................................................................................................................5
3.  MAINTENANCESCHEDULE ........................................................................................................................8

2

A
ppendix, Hydrotech DrumfilterHPC



1. INTRODUCTION 
ThisappendixcontainsinstructionsfortheHydrotechDrumfilterHPC(Highpressurecleaning
system.
2. HYDROTECHDRUMFILTERHPC(HIGHPRESSURECLEANINGSYSTEM) 

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

A
ppendix, Hydrotech DrumfilterHPC




2.2 Highpressurepump
TheHPCsystemshallbeconnectedtoahighpressurepumpdimensionedtoprovide8,2l/minat
80bar.Itisrecommendedtouseahighpressurepumpwithpossibilitytoadjustthepressure.The
highpressurepumpisnotincludedintheHPCsystemasstandardbutcanbesuppliedupon
request.


Remark:Pressuresabove80barwillcauseexcessivewearonthefiltermedia.


2.3 Functionaldescription

Function:
TheHPCsystemisdesignedtoreducetheneedforchemicalcleaningofthefilterpanels.Itisa
systemthatoperatesatmaximum80barpressure.Twohighpressurebackwashnozzlescleanthe
filtermediaduringrotationofthefilterdrum.Thebackwashnozzlesareassembledonabackwash
pipemountedonaslideblock.Theslideblockispositionedbythemeansofanelectricalactuator.
Thesystemisequippedwithabackpressurevalveorsolenoidvalve(optional)topreventflowthru
thespraynozzleswhenthesystemisinstandby(applicablewhenapressurizedfeedsystemis
used).AHighpressurepump(optional)canbesupplieduponrequest.

Backwashsequence:
WhentheHPCsystemisactivatedthefilterdrumstartstorotate.Thehighpressurepumpstarts
andpressurisedwaterflowthruthespraynozzlesviathehighpressurehoseandbackpressure
valve.Forsystemsequippedwithsolenoidvalve(optional),thevalveshallopenpriortothestartof
thehighpressurepump.Thespraynozzlescleanonesectionofthefilterpanelsduringrotationof
thefilterdrum.Whenthespraynozzleshavecleanedthecurrentfilterpanelsectiononthefilter
drumforonerevolution,theelectricalactuatormovestoitsouterpositionandbacktoitsinner
positionagain.Theslideblockhasnowmovedtothenextfilterpanelsectiontoclean.Whenthe
spraynozzleshavecleanedthisfilterpanelsectiononthefilterdrumforonerevolution,the
electricalactuatorisactivatedagain.Thenthisprocedureisrepeateduntilthewholedrumhas
beencleaned.Thehighpressurepumpstopsfollowedbythestopofthedrumrotation.For
systemsequippedwithsolenoidvalve(optional)thesolenoidvalvecloseswhenthepressureinthe
HPCsystemhasdropped,followedbythestopofthedrumrotation.

Remark:
Installation(electrical/mechanical)anduseoftheincludedcomponentsmustfollow
manufacturers’recommendationsandmustbeperformedbyauthorizedpersonnel.Local
regulationsmustbefollowed.



4

A
ppendix, Hydrotech DrumfilterHPC




2.4 Startupandoperation

1. Checktheequipmentfortransportdamage

2. Removethetransportlockingdevice



3. Removethespraybarbracketfromtheslideblock.

  

4. Makesurethatthebalanceweightinsidetheslideblockispositionedtowardstheservicerecess
intheprofilebeam.

 

Movingdirection
5

A
ppendix, Hydrotech DrumfilterHPC




5. Pushtheslideblocktotheservicerecessandliftouttheslidblockfromtheprofilebeam.

 

6. Measuretheinnerpositionoftheactuator.

Thebelowexampleshowsthemeasurement30mm.



Remark:Theactuatorhaveamaximumstrokeof100mmanditisimportantthattheactuator
strokeisadjustedsothatitcanneverbestalledintheinner/outerendpositionssincethiswill
causedamagetotheactuator.

7. Makearoughadjustmentontheactuatorstrokesothatitissettoapprox.80mmwithitsinner
position10mmfromtheinnerendstopand10mmfromtheouterendstop.

Thebelowexampleshowsthemeasurements40mm(innerposition)and120mm(outerposition).

 

6

A
ppendix, Hydrotech DrumfilterHPC



8. Makethefineadjustmentontheactuatorstrokesothatitissetto97‐99mmwithoutanystallingin
theinner/outerendpositions.

Thebelowexampleshowsthemeasurements31mm(innerposition)and129mm(outerposition).

 

9. Placetheslideblockintheprofilebeamandredirectthebalanceweightsothatitispositioned
towardsthespraybarbracket.Pushtheslideblockbacktothespraybarbracketandassemblethe
spraybarontheslideblock.

 

10. Pushtheslideblock“backwards”untilitstops.Notethebalanceweightposition.



11. Runtheactuatorsequenceandmakesurethattheslideblockmovesproperlyandthatthestrokeis
97‐99mmwithoutstallingintheinner/outerendpositionsaccordingtoaboveinstructions.Ifthe
strokeislessthan97mmmakeadjustmentstoreachtherecommendedvalues.

Remark:Ifthestrokeislessthan97mmitcancausedamagetotheequipment

12. Connectthehighpressurepumpandrunthefullhighpressurecleaningsequencewithtapwater.
Movingdirection
7

A
ppendix, Hydrotech DrumfilterHPC




3. MAINTENANCESCHEDULE


Check/Action  Maintenanceinterval 
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.
8

A
ppendix, Hydrotech DrumfilterHPC

























































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: [e-mail]
Website: www.hydrotech.se
User
guide
in
or
igina
l