Soren CS 800 User manual

Soren srl
Via Pacinotti 29
20094 Corsico, MI / Italia
tel [phone] r.a. fax [phone]
Email: [email protected]
REA/CCIAA: 856472/MI
Cap. soc. € 832.000 i.v.
C.f./Iva 01720330156
INSTRUCTION MANUAL
FOR
FREEZER
Model : CS 800 (R404A)
Serial Number : F0176-00
§ORDER : 0007
•CUSTOMER : ALFRED & CO. LTD
GREAT BRITAIN
•FACTORY : Same
•CUSTOMER ORDER : J5344 of 05-Jan-00
•SOREN ORDER CONFIRMATION : L0005 of 10-Jan-00
•DELIVERY : March 2000
•When requesting information about your machine always state: model of
the machine, serial n°, order n°.
•Keep this manual in a safe place for future reference..

INSTRUCTION AND SERVICE PARTS MANUAL -FREEZER CS 800, s/n F0176-00 -ALFRED & CO
1
INDEX
INTRODUCTION A1
DECLARATION OF CONFORMITY CE
1. STANDARD WARRANTY B1
2. IDENTIFICATION OF THE MACHINE C1
3. SAFETY
3.1 General safety information D1
3.2 Safety first D1
3.3 Operating zone D2
3.4 Installation D2
3.5 Safety inspection D2
3.6 General operating safety D2
3.7 Service and maintenance safety D3
3.8 Electrical Hazard D4
3.9 Mechanical Hazard D5
3.10 Thermic hazard D6
3.11 Compressed air hazard D6
3.12 Cleaning hazard D7
3.13 Halocarbon hazard D8
3.14 Ammonia hazard -N.A. D9
3.15 Safety labels D10
4. FORESEEN AND NOT FORESEEN USES OF THE MACHINE E1
5DESCRIPTION OF THE MACHINE AND SPECIFICATIONS
5.1 Purpose of the machine F1
5.2 Principle of operation F2
5.3 Machine analysis by HACCP 43/93/CEE method F2
5.4 Specifications F2
6. MACHINE NOISE EMISSION G1
7. IMPORTANT CAUTIONS
7.1 Protect chrome cylinder H1
7.2 Avoid freeze-up H1
7.3 Beware of sanitizing solutions H1
7.4 Prevent pump damage H2
7.5 Prevent dasher damage H2
8. INSTALLATION AND ASSEMBLY
8.1. Receiving and inspection I1
8.2. Installation place I1
8.3. Uncrating, installation and levelling I1
8.4. Assembly/disassembly scraper blades I2
9. OPERATION
9.1. Unit preparation L1
9.2. Pre-start-up procedures L1
9.3. Production L2
9.4. Overrun table metric L12
9.5. Operation problem solving L13
10. CLEANING AND SANITIZING
10.1. First cleaning M1

INSTRUCTION AND SERVICE PARTS MANUAL -FREEZER CS 800, s/n F0176-00 -ALFRED & CO
2
10.2. Recommendation about cleaning M2
10.3. Circulation cleaning -C.I.P M2
11. MANTENANCE
11.1. Pump maintenance N1
11.2. Rotary pump problems N4
11.3. Scraper blade maintenance N6
11.4. Compressed air system N10
Gear Unit: maintenance and lubrification (Annexed)
12. RECOMMENDED SPARE PARTS LIST
ANNEXES
1. CS FREEZER RUNNING TEST REPORT
2. OVERRUN,VISCOSITY & CYLINDER PRESSURE XS SERIES CONTROLLER
Instruction manual
Process controller programming
3. MIX FLOW RATE, ICE CREAM TEMPERATURE 6 MIX TEMPERATURE JM SERIES INDICATOR
Instruction manual
Process Indicator programming
4. REFRIGERATION SYSTEM
Refrigeration plant
Compressor refrigerant and oil charge
Technical Danfoss documentation
Refrigerating compressor Bitzer : Instruction manual
5. HITACHI INVERTER TYPE SJ100 : Instruction manual
6. DRAWINGS
7. PACKING LIST
8. WIRING DIAGRAM

INSTRUCTION AND SERVICE PARTS MANUAL -FREEZER CS 800, s/n F0176-00 -ALFRED & CO
A1
INTRODUCTION
The purpose of this manual is to provide instructions for tha safe installation,
operation and maintenance of your SOREN equipment.
SOREN is committed to provide quality equipment and customer satisfaction.
Specialized personnel has to read and understand the entire manual before
removing from the create and installing the equipment.
Should you have any questions concerning any information contained in this
manual, contact SOREN s.r.l.
SOREN reserves the right to improve, change or modify the construction of its
equipment or any parts thereof without incurring any obligation to provide like
changes to equipment previously sold.
Keep this manual in a safe place for future reference.
The note “not applicable” written on some paragraph of this
manual means that the features described on same are not
present on this machine/plant

Soren srl
via Pacinotti 29
20094 CORSICO, Mi/Italia
Tel. [phone] r.a.
Fax [phone]
Email: [email protected] Messrs
Alfred & Co Ltd
Wembley, G.B
We SOREN s.r.l.
Via Pacinotti n. 29
20094 CORSICO (MI)
TEL 02 - 45.177.1
FAX 02 - 45.177.340
declare, under our full responsability, that the product:
Machine : FREEZER FOR CONTINUOUS ICE CREAM PRODUCTION
Model : CS 800
Serial n° : F0176-00
Has been manufactured in accordance with the stipulations of the COUNCIL DIRECTIVE of the 14th June
1989 on the mutual alignment of legislation in Member States relating to machinery (89/392/EEC) and
the amendments of the 20th June 1991 (91/368/EEC) and the 30th Agust 1993 (93/68/EEC) with special
reference to Appendix 1 of the Directive on essential safety and health requirements related to the
design and manufacture of machinery.
We also declare that the machinery has been manufactured in accordance with the 73/23/EEC,
89/109/EEC and with harmonized standards EN 292-1 and EN 292-2, EN 60/204/1, EN 294 and EN 349
Corsico, 15 March 2000
DECLARATION OF CONFORMITY
Reg. imp. 152729/Milano
Cap. soc. L. 1.600.000.000 i.v.
C.f./Iva 01720330156

INSTRUCTION AND SERVICE PARTS MANUAL -FREEZER CS 800, s/n F0176-00 -ALFRED & CO
B1
1. STANDARD WARRANTY
♦Obligations of Seller (SOREN): during the warranty period, Seller shall
repair or, at Seller's option, replace parts determined by Seller to be defective
in material or workmanship. The warranty period is one (1) year from the date
of delivery to Buyer F.O.B. point of manufacture. The foregoing shall be the
sole obligation of Seller under this warranty with respect to the supply of this
machine and/or other equipment.
♦Warranty Exclusion: Repair or replacement of parts required because of
misuse, improper care or storage, negligence, alteration, accident, or lack of
specified maintenance are excluded from Seller's warranty obligations.
•Normal wear parts are also excluded from this warranty.
♦Limitation of liability and remedies: The liability of Seller for breach of any
warranty obligation hereunder is limited to:
•the repair or replacement of the equipment on which the liability is
based; or at Seller's option
•the refund to Buyer of the amount paid by Buyer to Seller for said
equipment.
♦Seller shall not be liable for incidental or consequential damages of any
kind whatsoever. The remedies set forth herein are exclusive.
♦Infringement: Seller will not be liable for the infringement of any patent by the
Buyer's use of any equipment or materials delivered.

INSTRUCTION AND SERVICE PARTS MANUAL -FREEZER CS 800, s/n F0176-00 -ALFRED & CO
C1
2. IDENTIFICATION OF THE MACHINE
SOREN freezers are machines for continuous ice cream production starting from
ice cream mix at 4°C by refrigeration and adjustable air injection. They are
designed and manufactured according to the up-dated technological know
ledges and are classified as follows:
♦Model, meaning:
-freezer type (e.g. CS)
-hourly maximum ice cream production (100% overrun) in litres (e.g. 100;
200, 400, 800, 1100)
♦Year
♦Serial n°
♦Refrigerant type
On the name plate (see illustration below) the following particulars are marked:
♦Name and address of the manufacturer
♦CE mark
♦Model
♦Serial number
♦Year of construction
S O R E N s.r.l.
Via Pacinotti, 29
20094 CORSICO (MI) Italy
Tel [phone] –Fax [phone]
Model
Serial n° Year

INSTRUCTION AND SERVICE PARTS MANUAL -FREEZER CS 800, s/n F0176-00 -ALFRED & CO
D1
3. SAFETY
3.1. GENERAL SAFETY INFORMATION
The following information provides specific information on hazardous
conditions which are inherent in the Continuous Ice Cream Freezer.
The SOREN Continuous Ice Cream Freezer is a mechanical freezing machine
which by the very nature of its design creates certain unavoidable hazards.
Safe operation requires the application of sound and prudent operating,
maintenance and servicing procedures under the direction of properly trained
supervisors.
Our objective in providing instructions and warnings is to identify each area of
potential hazards and its level of severity and to guide each worker for safe
operation, service and maintenance procedures.
SOREN equipment is designed to provide minimum operator access to
hazardous areas while providing adequate access for service by trained
personnel. Hazardous areas are provided with guards. Various types of
fasteners may be used for the guards depending on how frequently routine
access is required. Regardless of the type of fastener used, the mere
existence of a guard should alert the worker to the presence of a hazard.
Never operate or test run the equipment with a guard removed, unless under
the supervision of properly trained and authorized personnel. Then use
extreme caution to avoid the hazard.
DEFINITIONS:
DANGER !
An immediate hazard with a possibility of severe personal injury or death
if instructions, including recommented precautions, are not followed.
WARNING !
Hazard or unsafe practices which could result in severe personal injury or
death if instructions, including recommented precautions, are not
followed.
CAUTION !
Possible hazard or unsafe practices which could resultyn minor injury or
damage to product or property if instructions including recommented
precautions, are not followed.
3.2. SAFETY FIRST
SOREN equipment is designed and manufactured with due consideration and
care for generally accepted safety standards. However, like any mechanical

INSTRUCTION AND SERVICE PARTS MANUAL -FREEZER CS 800, s/n F0176-00 -ALFRED & CO
D2
device, the proper and safe performance of this equipment depends upon
using sound and prudent operating, maintenance and servicing procedures
under properly trained supervision.
For your protection, and the protection of others, learn and always follow the
safety rules outlined in this booklet.
3.3. OPERATING ZONE
An operating zone should be established around all machines. A brightly
painted guard rail or warning stripe should define the zone. Only the operator
or other authorized personnel should be within the operating zone when
machine control circuits are energized or the machine is running. No tools or
other equipment should be kept within the operating zone.
3.4. INSTALLATION
WARNING !
Power sources, such as electric and air, should be installed by trained
and authorized personnel only.
3.5. SAFETY INSPECTION
Before starting a machine:
•Be absolutely positive all guards and safety devices are installed and
operative.
•Be sure all personnel are clear of the machine.
•Remove (from the operating zone) any materials, tools or other foreign
objects that could cause injury to personnel or damage the machine.
•Make certain the machine is in operating condition.
•Make certain all indicating lights, horns, pressure gauges or other safety
devices or indicators are in working order.
After shutdown:
•Make certain all air and electrical power is turned off.
3.6. GENERAL OPERATING SAFETY
•Do not operate this machine until you read and understand the operating
instructions and become thoroughly familiar with the machine and its
controls.
•Never operate a machine while a safety device or guard is removed or
disconnected.

INSTRUCTION AND SERVICE PARTS MANUAL -FREEZER CS 800, s/n F0176-00 -ALFRED & CO
D3
•Do not start the machine untill all other personnel in the area have been
warned and have moved outside the operating zone.
•Remove any tools or other foreign objects from the operating zone before
starting.
•Absolutely do not have loose clothing, neckties, necklaces or unrestrained
long hair near an operating machine.
•Do not wear gloves, rings, watches, bracelets or other jewelry near an
operating machine.
•Keep the operating zone free of obstacles that could cause a person to trip
or fall towards an operating machine.
•Never sit or stand on anything that might cause you to fall against the
machine.
•Know the EMERGENCY STOP procedure for the machine.
•Air and electrical power must be off when the machine is not in use.
•Never manually operate limit switches with power on.
•Keep alert and observe indicator lights and warnings that are displayed on
the machine.
•Never leave the machine unattended while in operation.
•Do not operate faulty or damaged equipment. Make certain proper service
and maintenance procedures have been performed.
•Avoid placing fingers, hands, or any part of your body into the machine or
near moving parts when control circuits are energized.
3.7. SERVICE AND MAINTENANCE SAFETY
•Do not service a machine until you are thoroughly qualified and familiar with
the tasks to be performed.
•Never operate any controls while other persons are performing maintenance
on the machine.
•Do not bypass a safety device.
•Always use the proper tool for the job.
•Never open covers that house electrical components when power is on.
•Only perform maintenance on a machine in motion when properly trained
and required to do so. When directed to make adjustments on machines in
motion, extreme care must be taken.
•All air pressure must be relieved before performing maintenance or
loosening connection on any pressurized system.
•Air and electrical power are to be turned off unless they are absolutely
required for the specific servicing being performed.

INSTRUCTION AND SERVICE PARTS MANUAL -FREEZER CS 800, s/n F0176-00 -ALFRED & CO
D4
Do not enter a confined space without first checking for toxic fumes and
providing standby personnel on the site.
3.8. ELECTRICAL HAZARD
DANGER !
The Continous Ice Cream Freezer is normally powered by electric
motor(s) and has many other electronic controls and devices. This
creates a hazard of electrical shock which could cause severe injury or
even loss of life.
To minimize the risk from this inherent hazard:
•All electrical/electronic maintenance should be performed by trained and
authorized electricians only.
•Always assume that power is on and treat all conditions as live. This
practice assures a cautious approach which may prevent an accident or
injury.
•To remove the load from circuit or equipment, open disconnector or
breaker and lock in open position.
•Make certain that the circuit is open by using the proper test equipment.
•Capacitors must be given time to discharge, otherwise it should be done
manually with care.
•There may be circumstances where “trouble-shooting” on live equipment
may be required. Under such conditions, special precaution must be
taken as follows:
-Make certain your tools and body are clear of the ground
-Extra safety measures should be taken in damp areas
-Be alert and avoid any outside distractions.
•Before applying power to any equipment, make certain that all personnel
are clear of the machine.
•Control panel doors should be open only when checking out the electrical
equipment or wiring. After closing the panel door, make certain that (on
those panels where applicable) the disconnect handle mechanism is
operating properly.
•All covers on junction panels should be closed before leaving any job.
•All electrical apparatus must be properly grounded and overload
protected.
•All electrical connections should be protected by confining them within a
sealed junction box.

INSTRUCTION AND SERVICE PARTS MANUAL -FREEZER CS 800, s/n F0176-00 -ALFRED & CO
D5
3.9. MECHANICAL HAZARD
DANGER !
The Continuous Ice Cream Freezer has mechanical components which
operate the dasher(s) and pumps (belts, pulleys, couplings). These
components are guarded and/or enclosed.
However, it is necessary to remove the guards/enclosures to perform
routine maintenance, cleaning or services procedures. These
components may be powered by electric motors which may start
unexpectedly during these procedures, severe injury or even loss of life
could result.
Dasher and Coupling
•In order to assure maximum sanitary operating conditions or for certain
maintenance and servicing procedures it is necessary to disassemble and
assemble the dasher.
DANGER !
Should the dasher start rotating unexpectedly during servicing and
maintenance procedures severe injury or loss of life could result.
ALWAYS turn off the electrical power supply and LOCK OUT using a
locking device for which only the person doing the work has the key
before performing service or maintenance.
Rotating Coupling: NEVER remove the coupling guard(s) or service the
coupling assembly without locking out the drive power source such that only
the person involved has the key.
Reaching in or around the coupling while the freezer is running could cause
severe injury or loss of life.
Dasher: The dasher assembly is heavy. This creates a hazard of severe injury
for anyone handling it incorrectly. Provide enough workers or mechanical
lifting assistance to enable removing, installing and servicing the dasher
safely.
To minimize the risk from these inherent hazards:
•Only trained and authorized mechanics should perform maintenance or
service work on the freezer
•INSTALL an emergency shut-off switch within easy reach of the operator.
•ALWAYS turn off the electrical power supply and LOCK OUT using a
locking device for which only the person doing the work has the key,
BEFORE performing any of the following:
-Removing the guards from the motor coupling or from the front
bearing.

INSTRUCTION AND SERVICE PARTS MANUAL -FREEZER CS 800, s/n F0176-00 -ALFRED & CO
D6
-Performing any maintenance or service on the motor(s).
-Removing the front door.
-Disassembling the pump cover or rotors
-Assembling or disassembling the dasher
SCRAPER BLADES
The scraper blades assembled on the dasher must be sharp to work correctly.
This creates a hazard of severe cuts for anyone handling the dasher
assembly or scraper blades incorrectly. Wear protective clothing for the hands
and arms when handling the dasher assembly or the scraper blades. Avoid
contacting the cutting edge of the scraper blades.
DANGER !
All dasher have removable scraper blades. These blades can be very
sharp and cause severe injury if not handled properly.
To minimize the risk of cuts from these blades when removing and
installing the dasher:
•When removing the dasher by hand, always use heavy protective gloves
(such as welders gloves) that reach to the elbows.
•Always work with at least one other trained person when removing or
installing the dasher.
•Remove each blade from the dasher as soon as possible to remove the
danger from others in the immediate area.
•Always store the blades together in a labeled container when not in use.
3.10. THERMIC HAZARDS
DANGER !
During cleaning and sanitizing front door and pumps surfaces can reach
high temperatures (above 65°C) and cause severe burns if touched. To
avoid the risk, during these operations, personnel must keep away from
these parts of the machine (no manual intervention is necessary during
cleaning and sanitizing).
3.11. COMPRESSED AIR HAZARD
The CS Freezer uses compressed air for the following functions:
•Added to the product to produce “overrun”
•Operate the bypass covers on the product pump

INSTRUCTION AND SERVICE PARTS MANUAL -FREEZER CS 800, s/n F0176-00 -ALFRED & CO
D7
Compressed air creates certain unavoidable hazards. Compressed air may
retain the power to move objects even after the supply is turned off. Air
operated mechanical devices may operate unexpectedly from a remote
control signal. If the air supply pressure exceeds design limits, plastic line
connections could come apart and move around uncontrolled. These create a
hazard of severe injury to personnel working in the area.
To minimize the risk from these inherent hazards:
•All installation of compressed air must be performed by trained and
authorized pipefitters only.
•All compressed air installation must comply with all applicable codes and
standards.
•Install a hand operated shut-off valve in the supply line to allow isolation
of components before service or maintenance
•DO NOT perform any maintenance or service on the compressed air
system components unless the supply valve to the system has been
closed and locked or tagged.
•Train operating and maintenance personnel to always fully reconnect the
removable air lines used to operate the pump bypass feature.
3.12. CLEANING HAZARD
DANGER !
The use of water around electronic equipment enclosures creates a
hazard of electric shock which could cause severe injury or loss of life.
Turn off the electric power supply and lock out before using any water for
cleaning or rinsing around the electrical enclosures. Be certain the doors
on all electric enclosures are closed and fasteners tightned. Never spray
water directly into any electric controls or enclosures.
DANGER !
To properly clean and sanitize the Continuous Ice Cream Freezer for use
with food products it may be necessary to use chemical solutions. many
of the commonly used chemical used chemical solutions could cause
sever e injury to personnel if contacted. The hazard is especially severe
for eyes, skin or inhalation.
To minimize the risk from these inherent hazard:
•Thoroughly train all personnel working with cleaning or sanitizing
chemicals in their safe handling and disposal following use.
Manual Cleaning Procedure:
•Do not use toxic and/or flammable solvents to clean a machine.

INSTRUCTION AND SERVICE PARTS MANUAL -FREEZER CS 800, s/n F0176-00 -ALFRED & CO
D8
•Turn off air and electrical power prior to cleaning a machine.
•Equip all personnel using cleaning/sanitizing solutions with protective
clothing, including eye protection.
•Keep electrical panel covers closed and power off when washing a
machine.
•Always clean up spills around machine as soon as possible.
•Never attempt to clean a machine while it is operating.
Cleaning In place procedure:
•Make certain that all connections in the cleaning circuit are tight to avoid
contact with hot water or cleaning solutions.
•When the cleaning cycle is controlled from a remote or automated control
center, establish fail-safe procedures to avoid automatic start-up while
servicing equipment in the circuit.
•On equipment which includes manways, make certain covers are closed
and latched prior to starting the cleaning cycle.
3.13. HALOCARBON HAZARD
If the Continuous Ice Cream Freezer uses halocarbon as a refrigerant for
freezing the product, the following precautions are important. Halocarbon
(R22 or R404A) is colorless and clear in appearance with only a slight
ethereal odor. It is heavier than air and thus displaces much needed oxygen
for breathing. Thus it has the potential hazard of producing unconsciousness
and even loss of life.
Do not open any connection into the refrigeration system until all refrigerant is
evacuated and the freezer is isolated by closing the hand valves in the liquid
and suction lines.
DANGER !
A sudden release of refrigerant liquid sprayed on the skin can cause
serious damage to skin tissue. Keep eyes and exposed skin areas away
from any potential refrigerant discharge. If such a refrigerant burn occurs,
flush immediately with cold water, apply ice packs if severe and see a
physician at once.
Refrigerant R22 and R404A are generally considered to be chemically
nontoxic and nonflammable; however, any gas under pressure can be
hazardous because of the energy latent in the pressure alone. Never fill any
refrigerant gas cylinder completely with liquid. Always limit to approximately
80% liquid full. This will allow for normal expansion.
To minimize the risk from this inherent hazard:
•The refrigeration installation must comply with all applicable codes and
standards

INSTRUCTION AND SERVICE PARTS MANUAL -FREEZER CS 800, s/n F0176-00 -ALFRED & CO
D9
•The refrigeration installation must be performed only by pipefitters trained
and authorized for halocarbon refrigeration systems.
•Maintenance and service of the refrigeration system must be performed
only by trained and authorized service personnel.
•Install a hand operated shut-off valve in the line to each service
connection to allow isolation of components during service or
maintenance.
•Throughly train all operating and maintenance personnel in the areas of:
-use and care of personal protective equipment;
-the hazardous effects of halocarbons;
-first aid procedures.
WARNING !
When evacuating or purging any sistem containing R22 or R404A,
always ventilate the area immediately. Concentrations in the presence of
open flames such as gas range or gas water heater pilot lights may break
down and form small amount of harmful phosgene gas.
•Develop and use a plant-wide program for the safe operation and
maintenance of the halocarbon refrigeration system and all associated
equipment.
•Provide personal protective equipment including protective clothing and
respiratory protection.
•Provide adeguate ventilation for the processing area.
•Provide first aid supplies.
3.14. AMMONIA HAZARD -N.A.

INSTRUCTION AND SERVICE PARTS MANUAL -FREEZER CS 800, s/n F0176-00 -ALFRED & CO
D10
SAFETY
3.15. SAFETY LABELS
123

INSTRUCTION AND SERVICE PARTS MANUAL -FREEZER CS 800, s/n F0176-00 -ALFRED & CO
D11
SAFETY
SAFETY LABELS

INSTRUCTION AND SERVICE PARTS MANUAL -FREEZER CS 800, s/n F0176-00 -ALFRED & CO
E1
4. FORESEEN AND NOT FORESEEN USES OF MACHINE
WARNING !
This machine is designed to produce ice cream to be packed in different
ways (cups, cones, bulk, etc.). The SOREN freezer can also be used to cool
liquid food products containing at least 1-2% of fat.
Any other use is improper and so is prohibited by SOREN.
In particular the machine must not be used for production and processing
of:
♦grated-ice drink
♦toxic and not toxic chemical products and chemical products mixes
♦alcool based products and explosive products

INSTRUCTION AND SERVICE PARTS MANUAL -FREEZER CS 800, s/n F0176-00 -ALFRED & CO
F1
5. DESCRIPTION OF THE MACHINE AND SPECIFICATIONS
5.1. PURPOSE OF THE MACHINE
CS “freezers” are machines for contiunuos ice cream production by dosing,
mixing and refrigerating ice cream mix and air.
5.2. PRINCIPLE OF OPERATION
The unit is a combination of various systems working together to:
•Pump the product through the freezing cylinder
•Freeze the product to the correct stiffness.
•Add air at a controlled rate.
•Incorporate air uniformly into the product.
•Pump the frozen product to the next process step.
The principle of operation is best understood if each system is considered
separately.
5.3 MACHINE ANALYSIS BY HACCP 43/93/CEE METHOD
5.3.1 Analysis of alimentary Hazards
Freezers are machines that permit the continual production of ice-cream by
means of a previously pasteurised mix; as it freezes, the mass absorbs air,
injected into the mix on entry into the freezer cylinder.
In a machine processing a previously pasteurised, refrigerated mix that is
cooled to safe temperatures from a microbial point of view, the alimentary
hazards are mainly associated with:
•the possibility of external contamination
•problems associated with the cleanliness of machine parts in contact
with the product
5.3.2. Identification of points at which alimentary hazards may develop
Problems related to external contamination are exclusively associated with
the injection of air or nitrogen into the mix. Cleanliness related problems
are on the other hand linked with the efficiency of washing and sanitisation;
the areas most under risk are the dasher (agitator shaft), the pumps, the
air injection valve and the front inspection port.
5.3.3. Provisions taken with regard to the identified points.
Injection air
•The compressed air used by the client to feed the injection valve
mounted on the freezer must be filtered to ensure an adequate level
of hygiene and must be free of oil.
Cleaning and sanitizing
•The machine is designed and constructed to be closed circuit washed
with claning in place system (CIP wash)