Keofitt CIP RECIRCULATOR User manual

DON’T GAMBLE WITH YOUR SAMPLE
CIP RECIRCULATOR
USER MANUAL

KEOFITT CIP RECIRCULATOR USER MANUAL V.2 PAGE 2
DOCUMENT VERSION LOG
The table below lists previous versions of this User Manual and states the major changes between ver-
sions.
This version list is introduced in September 2017.
Version # Version date Major changes from previous versions
1 September 2017 Complete revision and new layout.
2 April 2019 Replaces preliminary version 1 with more text, improved instruc-
tions and more pictures.

KEOFITT CIP RECIRCULATOR USER MANUAL V.2 PAGE 3
INTRODUCTION:
MANUFACTURER: KeottA/S
Kullinggade 31 B+E
5700 Svendborg, Denmark
TYPE: CIP Recirculator
YEAR OF INTRODUCTION: 2017
YEAR OF REVISED DESIGN: 2019
LAST UPDATED: 2019
The English version of this Manual is the governing version and it is the only authorized version. Consequently, KEOFITT
cannot be held liable for other versions including translations of this Manual

KEOFITT CIP RECIRCULATOR USER MANUAL V.2 PAGE 4
CONTENTS
1. PRESENTATION..........................................................................................................5
1.1 Alcohol as cleaning agent ....................................................................................................................... 5
1.2 Other cleaning agents............................................................................................................................. 5
2. CIP RECIRCULATOR DESCRIPTION ................................................................................6
3. INITIAL CLEANING ......................................................................................................7
4. CHOOSING AND PREPARING A CLEANING SOLUTION........................................................8
5. PRE-SAMPLING CLEANING...........................................................................................9
5.1 Connecting the Recirculator................................................................................................................... 9
5.2 Flushing ................................................................................................................................................... 9
5.3 CIP Recirculation................................................................................................................................... 10
6. SAMPLING .............................................................................................................. 11
7. POST-SAMPLING CLEANING ....................................................................................... 12
8. ADDITIONAL BARRIER............................................................................................... 13
9. RE-USE OF CLEANING SOLUTION ................................................................................ 14
10. ALTERNATIVE CLEANING AGENTS .............................................................................. 15

KEOFITT CIP RECIRCULATOR USER MANUAL V.2 PAGE 5
1. PRESENTATION
ThismanualprovidesinformationonhowtousetheKeottCIPRecirculatorforcleaninganddisinfect-
ingaKeottsamplingvalvehavinghosepiececonnectionsfortheinletandoutletports.IfyourKeott
sampling valve has Mini Tri-clamp or threaded ports, use an adaptor, #900096 or #700062 respectively.
The principle behind the Recirculator is based on the operator circulating a cleaning agent from the bot-
tle through the valve chamber and back to the bottle by means of a hand operated bulb pump.
1.1 ALCOHOL AS CLEANING AGENT
By default, this manual is based on alcohol (70%) as cleaning agent, since it is widely used in breweries.
For this application alcohol has the advantage that it will act both as a cleaning agent and as a disinfect-
ant.
1.2 OTHER CLEANING AGENTS
You may also use the Recirculator with traditional CIP liquids like sodium hydroxide or nitric acid, as well
as rinse water. Procedures are explained in more detail in the chapter 10.

KEOFITT CIP RECIRCULATOR USER MANUAL V.2 PAGE 6
2. CIP RECIRCULATOR DESCRIPTION
The Recirculator consists of the following components:
# DESIGNATION DESCRIPTION AND USE
1 Bottle 1Lbottletobelledwithdetergent
2 Screw cap Fitted with internal and external hose unions and an air vent.
3 Bulb pump Hand operated pump placed in-line with supply hose.
4 Supply hose Conducts cleaning agent into the sampling valve.
5 Safety check valve Securesauni-directionalowfromthebottlethroughthesupply
hose to the valve to be cleaned. Requires a given over-pressure to
open at all.
6 Inlet connector FitshosepiececonnectorsonKeottvalves.Tobeconnectedtothe
sampling valve’s inlet port (upper port).
7 Outlet connector FitshosepiececonnectorsonKeottvalves.Tobeconnectedtothe
sampling valve’s outlet port (lower port).
8 Check valve Preventsthecontentinthebottletoowoutincasethebottleis
turned upside down.
9 Return hose Conducts cleaning agent from the sampling valve back to the bottle.

KEOFITT CIP RECIRCULATOR USER MANUAL V.2 PAGE 7
3. INITIAL CLEANING
PriortotherstuseoftheRecirculatoritisadvisedtocleanthebottle,thescrewcapandtheassociated
hoses and connectors with alcohol or another appropriate detergent and disinfectant.
NB! Perform these operations in a clean, controlled environment. The required hygienic level
must be determined individually depending the actual application.
Oncewashed/disinfectedkeeptheRecirculatorinasuitableprotectivepackaginguntilnextuse.

KEOFITT CIP RECIRCULATOR USER MANUAL V.2 PAGE 8
4. CHOOSING AND PREPARING A CLEANING SOLUTION
Prepare a solution suitable for cleaning the actual product.
By default, the descriptions to follow are based on alcohol as a cleaning agent, as it is widely used in
breweries.
NB! The liquid in the Recirculator is coloured green for better visualization; real alcohol is colour-
less.
1. Prepare a 70% alcohol solution.
2. Take a clean Recirculator bottle and un-
screw the cap.
3. Fill the bottle ¾ with the alcohol solution
andretthescrewcap.
Make sure the long suction tube is
inserted well below liquid level
4. Provide a small container to place the
capsintoandllitwiththealcoholsolu-
tion
Alcohol is a good detergent for water soluble and alcohol soluble substances and at the same time the
alcohol acts as a disinfectant.
Alwaysusea70%alcoholsolutionconsistingof70%ethanolorisopropanoland30%puriedwater.This
mixture ratio is optimal as the 70% solution is strong enough to quickly denature the cell proteins, with
the water content helping to transport the solution into the bacteria cells.
Prepare the solution on a daily basis. Preparation should be done in a clean, controlled environment.

KEOFITT CIP RECIRCULATOR USER MANUAL V.2 PAGE 9
5. PRE-SAMPLING CLEANING
Ifthevalvechamberhasbeenlledwithalcoholsincethelastsampling,thereisusuallynoneedforany
further cleaning before taking the sample.
NB! When removing the plug from the lower port make sure alcohol drips out from the port indi-
cating the presence of alcohol in the valve chamber.
If this is the case, you may go straight to chapter 6 SAMPLING.
If in doubt about the cleanliness of the sampling valve perform the following cleaning:
5.1 CONNECTING THE RECIRCULATOR
5. Remove both plugs on the valve (it drains
any alcohol from previous sampling, if
valvechamberwaslledwithalcohol
then)
6. Place the plugs in the small container with
alcohol, if they are to be reused; other-
wise discard them
7. Connect Recirculator’s supply hose to the
valve’s top port
Thementionedcaps/plugscouldbeeitherthestandardrubbercapsusuallysuspendedonachainfrom
thevalveorseparaterubbercapsorsteelplugs(seewww.keott.dkforfurtherinformation).
5.2 FLUSHING
8. Squeeze the bulb pump completely 3-4
times to rinse the valve chamber.
Thealcoholisushedtodrain,orany
other waste collection method
Ifthesamplingvalvewasnotcleanedproperlyaertheprevioussampling,productresiduesmaystill
bepresentinthevalvechamber.Ifthisisthecase,youmustcleanandushthevalvechamberbefore
starting the recirculation. In this way, the contamination of the bottle content will be minimized and not
reintroduced back into the bottle.
Itmightbenecessarytopumpmoretimes,iftheproductisstickyordiiculttoushout.Ifyouushthe
alcoholtotheoor,youmayneedtoprovidesomecollectionmethodtobeplacedbelowthevalveto
collect the alcohol.

KEOFITT CIP RECIRCULATOR USER MANUAL V.2 PAGE 10
5.3 CIP RECIRCULATION
9. Connect Recirculator’s return hose to the
lower port
10. Squeeze bulb pump with some force and
as completely as possible to press alcohol
through the valve chamber 5-10 times
When the Recirculator’s two hoses are connected to the valve the CIP recirculation may start.
NB! It is important to squeeze the rubber bulb pump rather hard in order to obtain an adequate
liquidvelocity,whichwillmechanicallyimprovethecleaningeect.Theadequatenumberof
pumping actions is individual from application to application and must be determined by the
user.

KEOFITT CIP RECIRCULATOR USER MANUAL V.2 PAGE 11
6. SAMPLING
11. Disconnect hose from top port
12. Plug top port immediately with a clean
cap
13. Disconnect hose from lower port
14. Flush the valve for 2-3 seconds with
product (depending on usual practice for
thespecicapplication)
15. Take your sample (sampling procedure is
not part of this user guide; see sampling
valve user manual)
Disconnect the Recirculator and perform the sampling according to your SOP.
Thetopportshouldbecappedquicklyonceushed,inordertopreventairbornecontaminantsfrom
entering the valve chamber.
Instead of using rubber caps suspended on a chain from the valve, you may use disinfected re-usable
caps(rubberorsteel),whicharebroughttothesamplingpointinacontainerlledwithalcohol.Thisisa
common practice in some industries.
Itisalsoinsomeindustriescommonpracticetoushwithproductinordertoexpelanyalcoholremain-
ing in the valve chamber.
NB!Ifyoudonotushwiththeproductbeforetakingthesample,youmustallowsometimefor
the alcohol to evaporate.
NB! The actual sampling operation must follow your individual standard operating procedures.

KEOFITT CIP RECIRCULATOR USER MANUAL V.2 PAGE 12
7. POST-SAMPLING CLEANING
Immediatelyaerthesampleistakenthevalvemustbecleaned,beforetheproductdriesupinsidethe
valve,makingitmuchmorediiculttocleanatalaterstage.
16. Aerhavingtakenthesampleremovethe
top cap and place it in alcohol
17. Connect the Recirculator’s supply hose to
the valve’s top port
18. Squeeze the hand pump completely 3-4
timestoushthevalvechamber
This step is similar to Step 8.
Thepurposeistoushthevalvechamberandremoveanyproductresiduesfromthesamplingprocess.
In this way you minimize the amount of product being circulated during the CIP process (steps 9-10).
At the same time, you should clean and disinfect the caps and make them ready to use for plugging the
ports (unless you use “new” re-useable caps, in which case you discard the used caps).
19. Connect return hose to lower port
20. Squeeze hand pump 2-3 times to circulate
the cleaning agent in the sampling valve
ThisisastepsimilartoStep9and10,providingaCIPaerthesampling.
Depending on the level of contamination and the hygiene requirements Steps 19-20 may be skipped.
The product being remove from the valve chamber and ports is suspended or dissolved in the alcohol
during CIP.
Your hygienic requirements and your actual application are determining factors as to whether the alco-
hol may be reused for the next CIP and if so, for how many times.

KEOFITT CIP RECIRCULATOR USER MANUAL V.2 PAGE 13
8. ADDITIONAL BARRIER
21. Disconnect return hose from lower port
22. Retcaponlowerport
Thepurposeofthesteps21-22istokeepthevalvechamberlledwithalcohol,whichwillactasanad-
ditional barrier between the process and the surroundings (the primary barrier being the valve’s mem-
brane).
Finally, the Recirculator must be disconnected.
23. Disconnectthesupplyhoseandliita
little from the top port while at the same
time squeeze the bulb pump slightly to
allowalcoholtoowintothevalve
chamber
24. For obtaining an additional barrier make
sure a surface of alcohol is visible inside
the top port. If not visible you may add
some alcohol from a squeeze bottle with
a spout.
25. Retcapontopport
Thevalvechamberisnowlledwithalcohol.

KEOFITT CIP RECIRCULATOR USER MANUAL V.2 PAGE 14
9. RE-USE OF CLEANING SOLUTION
Ifpre-CIPushingremovesallvisibleresiduestheamountofproductthatgoesintothebottleisvery
small, which may justify re-use of the alcohol for the subsequent cleaning processes. This must be deter-
mined by the user depending on the actual application.

KEOFITT CIP RECIRCULATOR USER MANUAL V.2 PAGE 15
10. ALTERNATIVE CLEANING AGENTS
As an alternative to alcohol you may use traditional CIP agents (alkali, acid and rinse water) and perform
a small local CIP of the sampling valve.
The procedure is very much like what is described above for alcohol, except for the fact that you may
need 2 or 3 bottles:
One bottle for the alkali
One bottle for the acid (only if acid cleaning is also necessary)
Onebottleforrinsewater(lettingrinsewaterowtodrain)
NB! This User Manual does not recommend one or the other cleaning agent or cleaning proce-
dure,astheymaydieralotfromoneindustrytoanother,andevencompanieswithinonegiven
industry.

DON’T GAMBLE WITH YOUR SAMPLE
KEOFITTA/S
Kullinggade 31
DK-5700 Svendborg
Denmark
Phone [phone]
Fax [phone]
info@keott.dk
www.keott.dk
Keottreservestherighttochangetechnicaldatawithoutnotice!
ForcompletesetofupdateddatasheetsandmanualsforKeottproductspleaserefertoourwebpagewww.keott.dk