Tetra Pak Hoyer Frigus 400 User manual

Tetra Pak
Hoyer
TetraPakHoyerS.p.A.
ViaMonferrato,54
20098SanGiulianoMilanese(Milano)
Italy
Telephone [phone]
Telefax [phone]
We hope that the information will be of help to
you. It is based on concrete data and on the best
of our current knowledge.
Readthecontentsofthemanualcarefully,including
the warnings and recommendations.
No part of this manual may be reproduced or
transmitted to third parties without the prior
written permission of Tetra Pak Hoyer.
F40 03 -B 00
Hoyer Frigus 400

Tetra Pak
Hoyer
F40 03 -B 00
1Machine identification data
2Generalinformation
3Description of the machine and technical data
4Installation
5Set-up
6Operatingprocedures
7Cleaningandmaintenance
8Troubleshooting
9Spare parts list
Enclosures

HOYER FRIGUS 400
1-1
Tetra Pak
Hoyer
Contents
F40 03 AB 00
1 - MACHINE IDENTIFICATION DATA
1.1 Introduction ............................................................................................................... 1-2
1.2 Identificationplate ..................................................................................................... 1-2
1.3 Servicecentres........................................................................................................... 1-3

1-2
Tetra Pak
Hoyer
F40 03 AB 00
MODEL
SERIAL N.:
YEAR OF CONSTRUCTION:
ELECTRICAL SUPPLY:
PNEUMATIC SUPPLY:
REFRIGERANT:
HEATING GAS:
THERMAL CAPACITY:
kW
Kg.
Kcal/h
Via Monferrato, 52 - 20098 San Giuliano Milanese
( MI ) Italia - Tel. [phone] - Fax [phone] Made in Italy
Tetra Pak
Hoyer
V
bar Nlt/min.
ph Hz
Type
1.2 Identification plate
For maintenance and service operations not
describedinthismanualorforanyotherproblemof
atechnicalnature,ourServiceDepartmentisatyour
completedisposalforinformationortoarrangefor
Fig.1.1 -Identificationplate
1.1 Introduction
Thank you for having chosen a Tetra Pak Hoyer
machine.
Werecommendthatyoureadthismanualcarefully
asitcontainsessentialinformationregardingthe
installation,checkingandmaintenanceoperations
requiredtokeepyourmacineinperfectcondition.
Themanualcontainstables,drawingsanddiagrams
whichwillallowyoutofamiliariseyourselfwithall
partsofthemachine.
Pleaseletusknowifanyinformationismissingoris
notsufficientlydetailed.Yourcommentswillbeused
toimprovethismanual.
thenecessarymeasurestobetaken.
WhencontactingourServiceDepartment,please
quotethedatagivenontheidentificationplateaffixed
tothemachineandshowninFig.1.1.

1-3
Tetra Pak
Hoyer
F40 03 AB 00
If you have requirement or problem that requires
ourassistance,pleasecontactone of the following
service centres, which are authorised to perform
maintenanceandprovidetechnicalserviceforTetra
PakHoyermachines.
EUMEA:
Tetra Pak HoyerApS
SoerenNymarksVej13
DK-8270Hoejbjerg
Denmark
Phone: [phone]
Fax: [phone]
Tlx:6 87 70alhoy dk
TetraPakHoyerS.p.A.
Via Monferrato, 54
I-20098 SanGiulianoMilanese
(Milan)
Italy
Phone: + 39 2 98 29 21
Fax: + 39 2 98 80 171
TetraPakHoyerFrance
c/oTetraLavalService SARL
R.C.S.VersaillesB403276 223
P.O. Box 56
F-78340Les Clayes-Sous-Bois
France
Phone: [phone]
Fax: [phone]
NORTH AMERICA:
TetraPakHoyerInc.
7711 95th Street
P.O. Box 0902
PleasantPrairie, WI 53158-0902
USA
Phone: [phone]
Fax: [phone]
SOUTHAMERICA:
Tetra Pak Hoyer Industria e
ComércioLtda.
Rua Napoleao de Barros, 1038
Cep04024-003 Sao Paulo-SP
Brazil
Phone: [phone]
Fax: [phone]
ASIA/PACIFIC:
TetraPak HoyerShanghai
Shanghai Overseas Chinese
Mansion
Room 2105-2107
No. 129,Yan'an Xi Lu
200040Shanghai
P.R.China
Phone: [phone]
Fax: [phone]
Tetra Pak Hoyer Service
3rdFloor,MolaceBuilding
2231PasongTamo Street
Makati,MetroManila
Philippines
Phone: [phone]
Fax: [phone]
SOUTH KOREA:
HoyerLtd.
4fl.DookyongBldg.
66-1/9Hannam-Dong
Yong San-Ku
140-210 Seoul
SouthKorea
Phone: [phone]
Fax: [phone]
THAILAND:
TetraPak Hoyer(Thai)Ltd.
1042Soi Poosin, Sukhumvit Soi
66/1
Bangchak,Prakanong
Thailand
Phone: [phone]
Fax: [phone]
C.I.S.:
TetraPakHoyerA/O
4thRostovskypeureulok
Dom1, stroenie 1
R-11921 Moscow
C.I.S.
Phone: [phone]
Fax: [phone]
1.3 Service centres

HOYER FRIGUS 400
2-1
Tetra Pak
Hoyer
Contents
F40 03 BB 00
2 - GENERAL INFORMATION
2.1 Declarationofconformity ........................................................................................... 2-2
2.2 Preliminarypoints ....................................................................................................... 2-2
2.3 Generalsafetyrules .................................................................................................... 2-2
2.4 Specialwarnings ........................................................................................................ 2-3
2.5 Residualrisks ............................................................................................................. 2-3
2.6 Ambientoperatinglimits ............................................................................................. 2-3

2-2
Tetra Pak
Hoyer
F40 03 BB 00
2.1 Declaration of conformity
Thismachinehasbeenmanufacturedinaccordance
withinternationalstandardsandhygieneandsanitary
legislationapplicabletofoodmachinery.
InparticularTetraPakHoyercertifies,throughthe
Declaration of Conformity supplied with the
machine,thattheHOYERFRIGUS400machine
isdesigned and manufactured in accordancewith
theprovisionsofDirective89/392/CE(Machinery
Directive)andwiththeabove-mentionedstandards.
•Theillustrations and drawingsof the machine
areintendedforgeneralreferenceonlyand are
notnecessarilyaccurateineverydetail;
•Themachinedimensionsandspecificationsgiven
in this manual are not binding and may be
changedwithoutpriornotice;
•Thedrawingsandallotherdocumentsprovided
as a part this machine remain the property of
TetraPak Hoyer and mustnot bepassed onto
thirdparties without thewrittenpermission of
Tetra Pak Hoyer.
•The manual includes instructions for all
accessoriesmountedonthestandardmachine.
•Themachineiscoveredbywarrantyaslaid
downin thepurchasecontract.Anyrepair
work not authorised by Tetra Pak Hoyer
carriedoutduringthewarrantyperiodwill
automaticallyinvalidatethewarranty.
2.2 Preliminary observations
2.3 General safety rules
•THESE SAFETY RULES HAVE BEEN
DRAWN UP IN YOUR INTEREST. Strict
observance will reduce the risk of accident to
yourselfottoothers.
•DO NOT attempt to move, install or operate
themachinebeforereadingandassimilatingthe
contents of this manual.Ask your superior in
caseof doubt;
•makesurethatall guards and safetycoversare
inplaceBEFOREstarting themachine;
•NEVERleavetools,mechanicalparts or other
foreignmaterialson orinsidethemachine;
•intheeventofamalfunction,presstheemergency
stopbutton.
•NEVER PUTYOUR HANDS INSIDE THE
MACHINE WHEN ITIS IN OPERATION;
•exercise caution even when the main switch
locatedon the tunnelis in the“OFF” position,
asthesupplyconductorswillstillbelive;
•shut off the compressed air supply before
disconnectinganypneumaticcomponent;
•makesurethatall guards and safetycoversare
correctly in place BEFORE restarting the
productioncyclesubsequenttomaintenance or
repairoperations;
•proceedwithcautionatalltimes.Rememberthat
youareresponsibleforyourown safetyandfor
thatofyourcolleagues;
•make sure that applicable regulations are
observedwhenmovingorliftingthemachine.
Ι

2-3
Tetra Pak
Hoyer
F40 03 BB 00
• All personnel operating the machine must be
familiarwiththegeneralsafety rules and must
observethemstrictly.Failuretofollowtheserules
may result in personal injury ordamage to
machinecomponents;
• maintenanceworkmustbeperformedwiththe
machineturnedoff.Themainswitchmustbein
the“OFF” position, the air valve closed and a
“workinprogress”signaffixedtothemachine;
• theusermustmakesurethatalltheinstructions
giveninthemanualarescrupulouslyobserved;
• userswillbesolely responsibleforriskscaused
bytamperingwiththesafetysystem;
• Thesafetyofmachinesusedinconjunctionwith
thismachine,ifnotsupplieddirectlybytetraPak
Hoyer,istheresponsibilityofthecustomer.
• Thepressure, speed, temperature and voltage
limitsandallinstructionsgivenareindispensable
forcorrect operation of the machine and must
alwaysbecompliedwithbythecustomer.
• Ambient conditions must be taken into
considerationduringinstallation.
• National legislation governing this type of
machinebeobserved.
Themachineissuitableforoperationinthefollowing
ambientconditions:
• Temperaturae : from 4°C to 40°C
• Humidity : from20%to95%.
FNOTE:
Tetra Pak Hoyer will accept no responsibility for
damageorinjurycausedbyfailuretocomplywith
theabovewarnings.
2.4 Special warnings
2.6 Ambient operating limits
The Frigus 400 maker is used for combining ice-
creammixturewith sanitary air infixedquantities
and, subsequently,forformingtheice-creamwith
the addition of cold generated by a refrigeration
cycle.
Themixtureofice-creamandsanitaryairisblended
inside a manifold by means of the pressure of a
rotatingpump and the injectionof compressed air
whichisthen pushed tothecylindrical evaporator
of a refrigerating system for the treatment of ice-
cream.
Severalissuesarise when adaptingthe pre-printer
tosuittheneedsof man:moreprecisely,centralizing
the controls on a single instrument panel for the
functionsofadjustmentand control.
Allthetransmissionparts,thekinematicmotionsand
the refrigerating system are protected by fixed
boards.
Asignalofdangerisplacedontheflapoftheelectric
boxtoindicatelive equipment.
Foradditionalsafety,theremainingriskisrecalled
inparagraph3.5Instructionsonbananddanger
signals.
2.5 Residual Risks

HOYER FRIGUS 400
2-1
Tetra Pak
Hoyer
Contents
F40 03 CB 00
3 - DESCRIPTION OF THE MACHINE AND TECHNICAL DATA
3.1 Descriptionofthemachine.......................................................................................... 3-2
3.1.1 Filterset ........................................................................................................... 3-3
3.1.2 Mixpump ......................................................................................................... 3-3
3.1.3 Freezingcylinder ............................................................................................... 3-3
3.1.4 Refrigeratingplant ............................................................................................. 3-3
3.1.5 Electricalsystem ............................................................................................... 3-4
3.1.6 Controlpanel.................................................................................................... 3-5
3.2 Technicaldata ............................................................................................................ 3-6
3.3 Improperuse ............................................................................................................. 3-7
3.4 Demolitionanddisposal.............................................................................................. 3-7
3.5 Warnings,prohibitionanddangersigns........................................................................ 3-7

2-2
Tetra Pak
Hoyer
F40 03 CB 00
Fig.3.1
Fig.3.2
4
2
3
5
1
3.1 Description of the machine
TheFRIGUS6000mixessanitisedairintoicecream
mixtoobtainthedesiredoverrun,coolsmixwithair
incorporated in it to create the viscous product
knownasicecream,andsuppliessufficientpressure
toconveytheicecreamtoitsdestinationthrougha
pipe.
In order to carry out these functions the machine
incorporatesthefollowingcomponents:
- asetoffilterswhichsanitiseaircomingfromthe
compressedairsupply;
- apump whichreceives mixfrom ageingvats,
addssanitised air, andsendsthe product tothe
freezingcylinder;
- freezingcylinderwithadasherandblades,inside
whichairisuniformlyblendedintothemixand
the product is cooled until it takes on a thick
consistency;
- arefrigeratingplantconnectedtotheoutsidewall
ofthefreezingcylindertocoolit down;
- anelectrical system for command andcontrol
ofallmachinefunctions.
Thecompressed air supply(the machine does not
includeanaircompressor)travelsthroughapressure
reducer (1) and a mesh filter (2) which separates
outanylargeparticles;itthengoesthroughamicro-
filter for removal of oil vapours (3) and an active
carbonfilter(4) which eliminatesodours. Finally,
thecleanairgoesthroughasterilisableTeflonmem-
branefilter(5)withmicroscopicporesspecifically
intendedto stop thepassage of bacteria.
The sanitised air thus obtained is let into the mix
betweenthefirstandsecondstageofthemixpump,
under a pressure which may be controlled by the
operator with a command on the control panel;
pressure may be adjusted to increase ice cream
volume.
3.1.1 Filterset
All these items of equipment are assembled on a
strong,compactstainlesssteelframe.

2-3
Tetra Pak
Hoyer
F40 03 CB 00
Fig.3.3
Fig.3.4
2
1
3
2
1
3
4
This is a two stage pump constructed with two
pistonsofdifferentsizes.Thefirststage(1)receives
andmetersthequantityofmixsetbytheoperatorin
accordancewiththehourlyproductionrequired;the
secondstage(2)receives mixdispensedbythefirst
withsanitisedairletinbetweenthe two stages and
sendsitallto thefreezingcylinder.
Asthe differencein volume between the first and
thesecond stage (determinedby pistonsize) does
notchangedependingoncylinderpressureandpump
speed, the quantity of air let in per unit of mix is
constantanddependsonairpressure.Byadjusting
thepressureofsanitisedair,theoperatortherefore
controls the increase in volume, which remains
constantthroughouttheproductioncycle.
Thepumpisdrivenbyanelectricmotorcommanded
byaninverter(for speedchanges)andincorporates
apneumaticallydrivenbypass(3) forCIPwashing.
It works properly at relatively high pressures, so
3.1.2 Mixpump
thatno extraction pump is needed coming off the
machine.
Thisis the mostimportant part ofthe machine: an
uprightpipewithachromecoatingonitsinsidewalls,
surroundedbya jacket in whichcoolantgas flows
tocool downthe cylinder.Adasher (1) with three
bladesrotatesinsideit,scrapingthechrome-plated
insidesurfacetoensurethat frozen ice creamdoes
not build up on the walls. The top (2) and bottom
(3) ends of the cylinder are closed by two covers,
whichincorporate the mix feed pipe (bottom) (3)
andtheice cream exitvalve(top) (4).
Mixblendedwithsanitaryaircomingfromthepump
flowsintothebottom partofthecylinder(3);onits
way to the top it is whisked by the dasher (1) and
cooledbycontactwiththewallsofthecylinder,kept
coldbytherefrigeratingplant.Theicecreamforms
andthenflowsoutoftheicecreamoutletvalve(4)
,whichiscontrolled pneumatically to regulatethe
pressureoficecreaminthecylinder.
In order to make sure the machine operates
correctly, it is important to be very careful not to
damagethe cylinder, always making sure that the
3.1.3 Freezingcylinder
scraperbladesareinperfectconditionandhavebeen
assembledcorrectly.

2-4
Tetra Pak
Hoyer
F40 03 CB 00
Composedofthefreezingcylinder (evaporator), a
Copeland Scroll Compliant rotary compressor, a
high efficiency condenser, an economiser, a
thermostatvalveandanumberofminoraccessories.
Allthesecomponentsaredesignedspecificallyfor
operationatlowtemperatures usingR22orR404A
coolantgases.
Cooling is carried out by steam compression: the
compressorpumpsgasintothecondenser,whereit
iscooledandliquefied,andtheliquidgasthenpasses
throughthethermostatvalveandisvaporisedinthe
freezercylinder(transformingintogaseousstateonce
more) before returning to the compressor and
startingthe cycle again.Vaporisationofgasin the
freezingcylinderremovesheatfromtheicecream
mix,whichcoolsdown;theheatisthendisposedof
3.1.4 Refrigeratingplant
Theelectricalsystemconsistsof the operatorpanel
andtheelectricalpanelwhichcoversalloftherear
ofthemachine.Theoperatorpanelmaybeused to
activateordeactivateallmachinefunctions,adjust
functionsandindicateanomalies.Theelectricalbox
attherearcontains the main switchandall control
andpower devices.
3.1.5 Electricalsystem
inthecondenser,whereitistransferred tothewater
inthetower(orwell),heatingit.
Apressureswitchvalveassembledonthecondenser
watercircuitkeepscondensationpressureconstant,
independentlyofwatertemperature.
The system mounted on the Frigus 600 is a
particularly efficient one which makes use of a
dependable, low maintenance Scroll Copeland
compressorwhichacts as atwo-stagecompressor
withaneconomisertoobtainconsiderablecooling
capacityandimproveddependability.

2-5
Tetra Pak
Hoyer
F40 03 CB 00
Fig.3.5
Hoyer Frigus
21
4
3
5
67
1
0
8
11
9
14
12
13
1615
17
18
1Whitepowerindicatorlamp(L1)
2Redthermalswitchindicatorlight(L2)
3Pumpstart/stopswitch(SL1)
4Litrecounter(D1)
5Pumppotentiometer(P1)
6Dashmotorammeter(D2)
7Dasherstart/stopselector (SL2)
8Compressorstart/stopswitch (SL3)
9Overrunair ON/OFF switch(SL4)
10 Hotgascontrolpotentiometer (P2)
11 C.I.P.washingswitch(SL5)
12 Emergencystoppushbutton
13 Overrunpressuregauge(M1)
14 Overrunpressureregulator(P3)
15 Cylinderoutletvalvepressureindicator(M2)
16 Cylinderoutletvalvepressurecontrol(P3)
17 Coolantevaporationpressuregauge
18Gaugefordetection of ice cream pressureincylinder
3.1.6 Controlpanel

2-6
Tetra Pak
Hoyer
F40 03 CB 00
A
B
C
Fig.3.6
3.2 Technical data
Dimensionsandweights:
Dimensions A = 1330
mm B = 755
mm C = 1665 ±25
mm
Netweight: 525
Kg
Grossweight: 725 Kg
Volume(withpackaging): 2.96 m³
(1.6 x 0.95 x 1.95 h metres)
Ratedcapacity:
from100 to 400litres/hour of icecream at –5.5ºC
Standardconditions:
Mixinputtemperature: + 4°C
Overrun:
100%
Neutralmixwith38%solids content
Nominalcapacityinstandardconditions:
200 to 600 l/h ice cream at –5.5ºC
Electricalspecifications:
Dashermotor : 4 kW
Pumpmotor: 0.75 kW
Refrigeratorcompressor: 6 kW
Auxiliaries: 0.85 kW
Totalinstalledpower: 11.6 kW
Compressedair:
Operatingpressure: 6÷10 bar
Consumption(max.): 10 Nl/min
Filteringdegree A0
Connector: 1/2”
female
Refrigeratingplant:
Coolantgas: R404A
Quantity: 2.8 Kg
Condensationwater:
a) dwellwater @ + 5°C 600 l/h
b) mainswater@ +15°C 1100l/h
c) tower water@ +28°C 3300l/h
Waterinletconnector: 1”gasfemale
Wateroutletconnector: 1”gasfemale
Noise:
A-weighted equivalent sound pressure level at 1
metre: Leq(A) = 69.9 dB(A)
Max. C-weighted instantaneous sound pressure
levelatworkingpositions:
Lessthan 130 dB/20uPa
Max.non-weightedsoundpressurelevelatworking
positions: Lessthan 140 dB/20uPa
Electromagneticcompatibility:
Conforms to VDE 0843/IEC801; wiring in
accordancewith EN55011

2-7
Tetra Pak
Hoyer
F40 03 CB 00
3.5 Warnings, prohibition and danger signs
WARNING:
Thedoorsoftheelectricboardcanbeopenedusing
thetoolssuppliedwiththemachine.
The opening of the doors disconnects the
componentsdownstreamfromthemain swutch.
Somecomponentsmaycontinuetobepoweredby
residualcurrentfora specificintervaloftime.
After opening the machine, avoid touching the
internalpartsforatleast5minutes.
Asignindicatingthepresenceofpoweredpartsis
placedon the door.
Nocomponentistoxicorharmful.
Disposeofreductinggearscarefullyastheyarefull
ofoil.
Do not abandon these components or dispose of
themwithregularwaste.
WARNING!Whenfinishedusingmachines
and components, dispose of them in accordance
withthelawsineffectinyourcountry.
Informationofusefordisposalofthemachineandits
components.
Themachine must bedemolished by specialised
personnelwearingappropriatesafetygarmentsand
workingincompliancewithsafetyandenvironmental
legilation.
Constructionmaterials:
-steel,stainlesssteel,aluminium,castiron
-copper,silverinelectricalcomponents
-rUbber,nylon,PVC,resinsandfibres.
Thoughthemachineisequippedwithanumberofsafety
systems,operatorsmustbeverycarefultomakesure
thatnosituationsarisewhichcouldpotentionallyput
themorothersindanger.
Themachineisdesignedandbuiltexclusivelyfortheuse
described in chapter 3.1. Any other use must be
considered improper and unreasonable. The
manufacturer shall not be held responsible for any
damagecausedbyimproper,erroneousorunreasonable
use.
Everyonewhoworksonthemachinemustbeadequately
trainedinthecorrectworkingmethodsandinformedof
thenatureandfunctioningofsafetydevices.
3.3 Improper use
3.4 Demolition and disposal

Tetra Pak
Hoyer
HOYER FRIGUS 400
4-1 F40 03 DB 00
Contents
4.1 Unpacking, delivery checks and transport ............................................................... 4-2
4.2 Installation............................................................................................................... 4-3
4.2.1 Cooling water connection ............................................................................... 4-4
4.2.2 Ice cream intake and outlet connection........................................................... 4-4
4.2.3 Compressed air connection............................................................................ 4-5
4.2.4 Electrical connection ..................................................................................... 4-4
4.3 Installation check .................................................................................................... 4-6
4 - INSTALLATION

Tetra Pak
Hoyer
4-2 F40 03 DB 00
Fig. 4.1 Fig. 4.2
The machine is packed in wooden crates.
Unpacking must be done close to the installation
position. The cases may be easily transported by
a lift truck.
If the crate has been damaged during transport,
notify the insurance company immediately and
do not proceed with removal of packaging until
authorised by the insurance company.
When the crate is positioned in the place of
installation,proceed to removethe machine from
its packaging as follows:
a. Unnail the top cover and remove it. Do the
same with the side panels. Take care with
the wooden spacers between the walls of the
crate.
b. Remove the box containing spare parts and
the other components from the crate.
c. Unnail the wooden blocks that hold the
machine in place during transport and
remove the protective cellophane.
d. Check that the content of the package
corresponds to the shipping documents.
e. Make sure that all covers and panels are
correctly fastened in place and there are no
loose parts.
f. Visually inspect all electrical components to
make sure they are in perfect condition.
g. If any part or component is missing, notify
Tetra Pak Hoyer immediately.
4.1 Unpacking, delivery checks and transport
The machine may be moved using a fork lift
truck, taking care to position the forks so that
the machine’s weight is evenly distributed.

Tetra Pak
Hoyer
4-3
F40 03 DB 00
Fig. 4.3
195
443
50 1070
1005 280
1530
443
580 696
82
30 600 120
24
222021 23
20
21
22
23
25 25
24
750
The machine is fully tested and regulated in the
factory with about one hour of ice cream
production prior to shipment to the customer.
Installation simply involves connecting up the
pipes for the condenser cooling water supply, ice
cream mix intake and outlet, compressed air
supply and electric power supply. There is no
need for internal adjustments to the machine; we
recommend that factory settings not be changed.
Proceed with the installation procedure as
follows:
a. Positionthe machine in its operating position
and check the plate data to make sure that
the machine is compatible with the site’s
electrical power supply.
b. Level the machine with a spirit level by
means of the adjustable feet. The plates
provided may be applied underneath the feet.
c. Connect up the condenser cooling water
pipes. (1) (2).
d. Connect up the ice cream mix intake (3) and
outlet(4_pipestothe production line.
e. Connectup the compressed air pipe(5).
f. Connect the machine to the earth and to the
electricalpowersupply(6).
4.2 Installation

Tetra Pak
Hoyer
4-4 F40 03 DB 00
Fig. 4.4
4.2.1 Cooling water connection
Connect up the supply of condenser cooling
water, taking care to get the direction of water
flow correct: water must flow in through the
connection at the bottom (2) and out through the
connection at the top (1) . It is recommended that
two on/off taps (3) (4) be installed close to the
machine,aswellasasmalldraintap(5)closetothe
bottomconnection;itisalsoa goodideatoconnect
upthesetwotapswiththemachinethroughtwopipe
unions(three-piece connectors) to makeit easy to
separatethefreezerfromthe installation.
Themachine is fittedwith a pressure valve which
controls the flow of water in inverse proportion
to its temperature to obtain constant cooling
(constant condensation pressure on the coolant
side); this makes it possible to use water supplies
withwidely varyingtemperatures forcooling the
condenser.Thewaterflow varies asa result, from
about 600 litres/hour at 5ºC to 3600 litres/hour
at 28ºC (average values for machine in operation
at maximum production rate).
Pipe diameter depends on pipe length and the
pumps available, and must never be less than
the diameter of the connections, which is 1” gas.
It is essential to wash out the pipes BEFORE
connectingthem to themachine by flushing them
with water to eliminate any particles or dirt. If
the water that flows out of the pipes continues to
bedirty,it will be necessary to install a filter with
a filtering capacity and size appropriate to the
typeandamountof dirt conveyed attheintake (1)
(thebottomconnection).
76
2
3
1
4
5

Tetra Pak
Hoyer
4-5
F40 03 DB 00
4.2.2 Ice cream intake and outlet connection
Connect the mix supply pipe to the mix pump
inletconnection (24) on the front of themachine.
The machine has a CIP washing programme
permittingthorough,safe washing of themachine
without dismantling its parts; it will therefore
be necessary to prepare the required connections
between the CIP washing pump and solutions
and the mix pipe.
Make sure that the mix flows spontaneously to
the machine connection (24) , and does not need
to be suctioned by the freezer pump; this may be
done by simply positioning the aging vats higher
than the freezer (check that the spontaneously
flowing supply is sufficient even when the mix
level in the containers is low), or by installing a
suitable centrifugal pump close to the vats. Take
care to ensure that there is no air getting into the
pipes, which could pollute the product and result
in fluctuation of ice cream overrun.
CAUTION:
Pipes must be dismantled and washed
thoroughly after completing this procedure
to ensure that no hard solid particles are
conveyedtoward the freezermix pump.This
is very important as solid particles such as
metalburrorweldingresiduescouldseverely
damagethefreezer pump and will invalidate
the guarantee.
Connect up the ice cream outlet to the utility.
Use the shortest possible pipe, with as few
curves as possible, and use a pipe which is shiny
inside; the pipe does not need to be insulated.
Make sure that ice cream pressure in the
cylinders does not exceed 12 bar (the absolute
maximumpermitted value); if this should occur,
move the freezer closer to the ice cream utility
and/or use hot gas to produce softer ice cream.
Connect the compressed air supply pipe to the
connection on the rear of the machine; it is
recommended that an easily removable tap and
connection be assembled close to the machine
connection.
The supply pressure measured on the machine
4.2.3 Compressed air connection
must never drop below 6 bar. It is strongly
recommended that the compressed air supply in
the place of installation be fitted with an air
drying system and A0 filters to remove oil
vapours and residual fine particles.
CAUTION:
Electrical connection must be made
exclusivelyby competent technicianswhoare
familiarwithsafetylegislationand authorised
toperform and certifyelectrical installations.
Check the identification plate to make sure that
the machine is compatible with the site’s power
supply. Connect the machine’s power supply to
the site’s distribution panel and protect it with a
4.2.4 Electrical connection
suitable device, complying with all regulations
for correct electrical installation in effect in the
place of installation.
We recommend installing an automatic circuit
breaker on the distribution panel, complying
with local regulations. Great care must be taken
to ensure correct connection with the earth, as
incorrectconnection couldcause severedamage
to the machine’s electronic parts and injury or
death to the operator.
The section of the power supply cable must be
determinedon the basis of its length and the grid