Ice-Tech PR350H User manual

User’s Manual
Technical file
1
2
User’s manual
PR350H

User’s Manual
1
User’s manual
PR350H

Industrivej 62
DK-6740 Bramming
Denmark
Original
Version: 2.0
IceTech PR350H
User’s manual
Page:
1 of 20
Date: 2017.07.03
Init: JM
CONTENT
GENERAL INFORMATION 2
SYSTEM DESCRIPTION 3
•Functional description 3
•System identification 4
•Supplier responsible for the equipment 4
TECHNICAL DATA 5
TECHNICAL FACTS OF FROZEN CO26
SAFETY REGULATIONS 7
•General Measures 7
•Personnel Qualifications 7
•Security and Risk 7
•Danger of Suffocation 7
•Static Electricity 8
•Danger of Congelation 8
•Pinch Point Hazard 9
•Wear Protective Gloves 9
•How to Lift / Transport the IceMaker 9
SAFETY OPERATION 10
•Emergency stop 10
•Machine safety 10
MACHINE STRUCTURE 11
MACHINE OPERATION START-UP 12
MACHINE CONTROLS 14
LIQUID CO2LEAKAGE 17
STOP PRODUCTION 17
•Maintenance Daily 17
REPAIR AND WARRANTY 17
•Repair 17
•Terms of Warranty 17
INSTRUCTION – UNPACKING AND PREPARATIONS BEFORE INSTALLATION 18

Industrivej 62
DK-6740 Bramming
Denmark
Original
Version: 2.0
IceTech PR350H
User’s manual
Page:
2 of 20
Date: 2017.07.03
Init: JM
GENERAL INFORMATION
The IceMaker PR350H presents a state of the art dry ice pelletizer packed with features for easier operation, swift production
shifts and high capacity.
The IceMaker PR350H produces high quality dry ice pellets from stroke one. This is secured by the closed chamber
technology which also ensures fast production shifts and an extremely short start up time.
The automatic change of extruder plates also eliminates downtime and reduces loss of valuable CO2. The pellet length and
quality are optimized using the new pelletizer, and the complete version of the IceMaker PR350H can produce two sizes of
pellets without changing the extruder plates. The IceMaker PR350H contains lots of technical features compared to existing
products on the market.
The automatic change of extruder plates is an option for the IceMaker PR350H. The hydraulic unit use logic components
for higher performance.
The machine parts are protected by a moisture-free enclosure, which also reduces the noise level to a minimum (below 75
dB(A). The IceMaker PR350H provides a non-stop supply of high-density dry ice pellets. The source of raw material for the
production of pellets is liquid carbon dioxide conserved at low temperature in a storage tank.
The control system of IceTech PR350H, based on Beckhoff Industrial PC and HMI system, offers maximum functionality
and a user-friendly user interface. By selecting the pellet size required, production is started by pressing one button. Just-
In-Time production minimizes labour and waste during production.

Industrivej 62
DK-6740 Bramming
Denmark
Original
Version: 2.0
IceTech PR350H
User’s manual
Page:
3 of 20
Date: 2017.07.03
Init: JM
SYSTEM DESCRIPTION
This user’s manual covers the IceTech PR350H. The main parts are described in the machine structure section. Operating
instruction for add-ons can be found in separate instructions, and is not included in this manual.
Functional description
The main function of IceTech PR350H is to produce dry ice pellets from liquid carbon dioxide. This is performed by a
sequence of operations executed by the Beckhoff IPC. The main steps in a normal production are as following and refer
to PI diagram P296-1-14201-B for IceTech PR350H:
1. Start up
2. Production
3. Standby
4. Shut down
At every start-up the hydraulic cylinder =G01-G1-MO1 for extruder piston is extracted to its maximum position to extrude
the CO2snow in the chamber in case of emergency stop or machine error.
Liquid CO2is fed from an external CO2tank (not part of this description – see supplier information) through an insulated
pipe to the IceTech PR750H. It is recommended to use a gas separator to eliminate gaseous CO2from the liquid CO2.
When the hydraulic cylinder =G01-G1-MO1 for extruder piston is retracted and hydraulic cylinder =G01-Q3-MO1 for
extruder plate changer is in middle position - CO2In valve =W01-Q1 and Injection valve =G01-Q1 will open and purge
gaseous CO2through the chamber, degassing filters and via degassing pipes to CO2out. When temperature =W01-TT1 in
the liquid CO2 is -14°C injection will proceed until the timer is reached. The degassing valve =G01-Q5 on the extruder
chamber will open to reduce chamber pressure before the hydraulic cylinder =G01-G1-MO1 for the extruder piston will
extract until fast forward pressure set point is reached and the hydraulic cylinder will again retract. This will continue until
plug thickness set point is reached. When plug thickness is reached the hydraulic cylinder =G01-Q3-MO1 for the extruder
plate changer will move to the selected extruder plate position and production will commence.
In production mode CO2In valve =W01-Q1 and the Injection valve =G01-Q1 will open until the timer is reached. The
degassing valve =G01-Q5 on the extruder chamber will open to reduce chamber pressure before the hydraulic cylinder
=G01-G1-MO1 for the extruder piston will extract until plug set point is reached and the hydraulic cylinder will again retract.
This cycle will continue until a different step is selected. During production it is possible to set IceTech PR350H in standby.
When maximum standby time is reached, the IceTech PR350H will run a shutdown sequence.
The shutdown sequence ensures that IceTech PR350H is stopped in a proper position to empty the extruder chamber of
dry ice snow and avoid moisture in the extruder chamber. The hydraulic cylinder =G01-Q3-MO1 for the extruder plate
changer will move to the selected position and the hydraulic cylinder =G01-G1-MO1 for the extruder piston will extract to
maximum position and return to shut down set point position. The hydraulic cylinder =G01-Q3-MO1 for the extruder plate
changer is in the middle position and all valves are closed.

Industrivej 62
DK-6740 Bramming
Denmark
Original
Version: 2.0
IceTech PR350H
User’s manual
Page:
4 of 20
Date: 2017.07.03
Init: JM
System identification
System is marked with:
Supplier responsible for the equipment
Cold Jet ApS
Industrivej 62
DK-6740 Bramming
Denmark
Phone: [phone]
Fax: [phone]
Homepage: www.coldjet.com, www.icetechworld.com
Email: [e-mail]

Industrivej 62
DK-6740 Bramming
Denmark
Original
Version: 2.0
IceTech PR350H
User’s manual
Page:
5 of 20
Date: 2017.07.03
Init: JM
TECHNICAL DATA
Rated Output:
kg/h: up to 350
lbs/h: up to 772
of high quality dry ice pellets, depending on the extruder plate applied
Pellet Size:
Diameter:
mm: 3 - 10 or 16
inch: 0.11 - 0.39 or 0.62
Cylindrical - length varying from:
mm: 50 to 100 / inch: 1.96 to 3.93
Inlet Liquid CO2Pressure:
bar: 16 - 22
psi: 232 - 319
Liquid CO2Dryness Fraction:
The water content should not exceed 35 ppm and should not be less than 5 ppm – or equivalent to a dewpoint
temperature of -66°C to -51°C (-86.8°F to -59.8°F).
NOTE:
The liquid CO2supply must be completely free of oil and must have a purity of min. 99.9%.
Liquid CO2Supply Pipe:
Internal dia. 20 mm (0.8 inch), very well insulated with a minimum number of bends and fittings.
NOTE: If over 20 m (65.6 feet) in length, always use an internal dia. of 25 mm (1 inch).
Power Supply:
3 x 400 V AC + PE, 50Hz,
TN-S Earthing system
Imax. 32 A
480V AC Solidly Grounded Wye Source
3 Phase + GND wire, 60Hz
Imax. 32 A
Control Panel SCCR: 25kA rms symmetrical 480VAC Max.
Rated power:
16,6kW / 21,5 Hp
Machine Dimensions:
Length: 1500 / 59
Width: 1000 / 39
Height: 1800 / 71
Height: 1845 / 73.6 (incl. ext. legs)
Weight: 1150kg / 2535 lbs
Noise level: below 75 dB(a).

Industrivej 62
DK-6740 Bramming
Denmark
Original
Version: 2.0
IceTech PR350H
User’s manual
Page:
6 of 20
Date: 2017.07.03
Init: JM
TECHNICAL FACTS OF FROZEN CO2
Dry ice is frozen carbon dioxide (CO2). It is much denser and colder than traditional ice. Dry ice is -79°C (-109.3°F).
Traditional ice is 0°C (32°F).
In addition, dry ice does not melt - it sublimates. Sublimation is the process of going directly from solid form into gas form.
Dry ice by-passes the liquid form, hence the “dry” ice.
The first step in producing dry ice is to turn the carbon dioxide gas into a liquid. This is done by compressing the CO2and
removing excess heat. Next, the pressure is reduced over the liquid carbon dioxide by sending it through a snow valve
(expansion valve). As the liquid evaporates it absorbs heat causing some of the CO2to freeze into dry ice snowflakes.
The dry ice snow is then exposed to compaction by a large press to form blocks. Dry ice is much heavier than traditional
ice, weighing 1.7 times as much. CO2is a natural substance produced by the combustion of organic compounds and
is exhaled by humans and other living beings.
Pressure- Temperature phase diagram for CO2
CO2is
:: Non-toxic
:: Transparent
:: Odourless gas under atmospheric pressure and temperature
:: 1½ times heavier than air
:: The atmosphere consists of 0.03% CO2
CO2exists in three forms
:: Gas, e.g. used in the food industry
:: Liquid, kept under pressure
:: Solid, dry ice

Industrivej 62
DK-6740 Bramming
Denmark
Original
Version: 2.0
IceTech PR350H
User’s manual
Page:
7 of 20
Date: 2017.07.03
Init: JM
SAFETY REGULATIONS
General Measures
The IceTech PR350H manual contains instructions on starting up, operating and servicing the machine. The operator must
follow the instructions in the manual. Moreover it is important that the owner makes sure that the operator understands
the contents of this manual and follows its guidelines and safety regulations.
Personnel Qualifications
Employees, who are in charge of mounting, operation, service and maintenance must be adequately qualified to take care
of such job functions.
If the employees do not possess sufficient know-ledge, they must be instructed and trained properly. If necessary, this can
be arranged in cooperation with the manufacturer of the machine.
The owner of the machine shall make sure that the operator, who is to work with the IceTech PR350H, fully understands
the importance of complying with the SAFETY REGULATIONS described on the following pages as well as those placed on
the machine, and the importance of carefully studying the contents of the manual.
Security and Risk
The IceTech PR350H is designed so as to comply with the EC Declaration of Conformity for Machinery. Therefore, using
the machine does not pose a risk to the operator when the instructions in this manual are followed carefully.
It is important that the operator carefully follows the safety signs on the machine and the safety regulations described later
in this manual and that the operator reads and understands the contents of this manual before starting up the machine.
Installation must be carried out according to the instruction ”Unpacking and preparations before installation”.
The machine may only be installed by authorized personnel, that is electricians with knowledge of the Council Directives
73/23/EEC and the 89/336/EEC and the 89/336/EEC (or similar directives in other parts of the world).
Danger of Suffocation
Dry ice pellets are CO2in solid form. At ordinary atmospheric pressure, CO2can only exist in this solid form at temperatures
of -79°C (-110°F) or lower. Therefore, during dry ice production, the CO2will immediately be heated and thus transform
from solid form into gas form.
Please note:
Since the specific gravity of CO2is higher than that of ordinary atmospheric air, the air with its contents of oxygen will be
replaced by CO2if the dry ice production is taking place in small or insufficiently ventilated rooms.

Industrivej 62
DK-6740 Bramming
Denmark
Original
Version: 2.0
IceTech PR350H
User’s manual
Page:
8 of 20
Date: 2017.07.03
Init: JM
Therefore, please note the following:
1. Low CO2concentrations (3-5%) cause headaches and fast breathing.
2. CO2concentrations of (7-10%) cause headaches and nausea and may result in unconsciousness.
3. Higher CO2concentrations result in unconsciousness and at worst it may cause suffocation.
High CO2concentrations may result in unconsciousness due to displacement of oxygen. Therefore, always make sure to
provide sufficient ventilation of the working area, and always avoid producing dry ice in small rooms.
Static Electricity
Dry ice can cause electrostatic discharges. However, the equipment bonded to ground to minimize electrostatic discharge,
and the warning sign is only meant to instruct the operator to avoid placing the equipment in rooms containing explosive
gasses.
Also, it is recommended to use a plastic shovel in the dry ice container.
Danger of Congelation
CO2in solid form has a temperature of -79°C
/-110°F or lower at atmospheric pressure and can therefore cause serious congelation injuries.
IMPORTANT!
The dry ice is extremely cold, therefore, do not touch parts of the machine, which are in direct contact with the dry ice
without wearing appropriate protective clothing and gloves.