Cold Jet i3 MICROCLEAN 2 User manual

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Operator Manual
Original Instructions [English]

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Copyright © 2023 Cold Jet, LLC
All rights reserved. Printed in the USA.
Due to continued product development this information may change without notice. The information and
intellectual property contained herein is confidential between Cold Jet and the customer and remains the
exclusive property of Cold Jet. If you find any problems in the documentation, please report them to us in
writing. Cold Jet does not warrant that this document is error-free.
No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or
by any means, electronic, mechanical, photocopying, recording or otherwise without the prior written
permission of Cold Jet.
This manual reflects the product configuration as was current at the time of its writing. An item’s display in
this manual does not guarantee the item’s availability at any time in the future. Images shown are for
representation purposes only. Products may vary from the images displayed. Cold Jet is not liable for
typographical errors or changes to specifications presented.
Contents
System Identification____________________________________________________________________________________4
Introduction _____________________________________________________________________________________________5
Safety ____________________________________________________________________________________________________6
General Safety Guidelines ____________________________________________________________________________6
CO2Safety _____________________________________________________________________________________________6
Electrostatic Discharge _______________________________________________________________________________7
Electrical Grounding __________________________________________________________________________________7
Safety Labels __________________________________________________________________________________________7
Cautions and Warnings _______________________________________________________________________________8
Lockout Tagout______________________________________________________________________________________ 10
Emergency Stop _____________________________________________________________________________________ 11
Reset Screen_________________________________________________________________________________________ 12
System Description____________________________________________________________________________________ 12
Machine Data _______________________________________________________________________________________ 13
Machine Components_______________________________________________________________________________ 14
Nozzles ______________________________________________________________________________________________ 15
Control Panel and HMI Screens_____________________________________________________________________ 16
Operation______________________________________________________________________________________________ 18
Unpacking the Machine_____________________________________________________________________________ 18
Transport, Storage, and Disposal___________________________________________________________________ 18
Machine Setup ______________________________________________________________________________________ 20
The Compressed Air Supply_________________________________________________________________________ 22

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Starting the Machine________________________________________________________________________________ 25
Blasting Dry Ice______________________________________________________________________________________ 28
Shutting Down the Machine ________________________________________________________________________ 29
Additional Features ___________________________________________________________________________________ 30
Advanced Settings_____________________________________________________________________________________ 35
Cold Jet CONNECT® ___________________________________________________________________________________ 37
Maintenance___________________________________________________________________________________________ 39
Troubleshooting _______________________________________________________________________________________ 40
Warranty Policy________________________________________________________________________________________ 41
Schematic______________________________________________________________________________________________ 44
Contact Information___________________________________________________________________________________ 46

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System Identification
Locate the data plate for this machine and record the information provided in the spaces below. To view
documentation for your machine, scan the QR code:
ASSEMBLY No.
SERIAL No.
ELECTRICAL No.
AC VOLTS
PHASE
FREQUENCY
AMPS
MAX OPERATING PRESSURE
MOTOR kW
Mo./Yr.
SCCR [Short Circuit Current Rating]
QR code
i3, Microclean 2

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Supplier Responsible for the
Equipment:
Cold Jet, LLC
455 Wards Corner Road
Loveland, Ohio 45140 USA
Phone: [phone]
Website: www.coldjet.com
Introduction
About This Manual
•This manual should be kept with the machine and be readily accessible to machine operators and
maintenance personnel.
•This manual contains information on the safety, transportation, operation, and maintenance of
this machine.
•The graphics used in this manual may show machine details that may be different than the actual
machine. Components of the machine may have been removed for illustrative purposes or the
continuing improvement of the machine’s design may cause changes that are not included in this
publication.
•The owner of this machine is responsible for verifying the operator of this machine is properly
trained and understands the contents of this manual.
About The Machine
•This machine is designed for precision applications and can safely clean delicate surfaces and
complex cavities.
•The lightweight and compact design leads to easy transportability.
•Easily view and control blasting parameters and settings from the 7” LCD screen with digital
controls.
•Remote monitoring and diagnostic capabilities are available with Cold Jet CONNECT®.
•Optimized design leads to a consistent and pulse-free blast stream.
Environmental Impact
Dry ice is a clean and non-toxic medium approved by the EPA, USDA, and FDA. The dry ice used in this
machine is made from reclaimed CO2 generated from other industrial processes.

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Safety
General Safety Guidelines
•This machine is designed to comply with international design standards and the European
Machinery Directives.
•Using the machine does not pose a risk to the operator when the instructions in this manual are
followed. However, certain precautions must be taken during its use. To understand all the
necessary precautions, the machine operator must read the entire manual before operating or
performing maintenance on the machine.
•Operation should only be performed by trained personnel. Below are some basic safety
guidelines:
oFollow local governing codes to ensure a minimum standard of safety.
oWear protective gloves, eye protection, hearing protection, and protective clothing.
oOperate the machine in a well-ventilated work area.
oFollow the prescribed inspection schedule.
oStart up and shut down the machine according to the instructions in this manual.
oDo not operate a machine that is damaged or in disrepair.
oDo not store objects on top of machine.
CO2Safety
WARNING - Ensure adequate ventilation when operating this equipment to
prevent the build-up of carbon dioxide gas. If used indoors or in other
confined spaces, a CO2detector should be used to monitor excessive, unsafe
levels of CO2gas and provide a suitable warning. The legal exposure limit by
OSHA is a 0.5% average over an 8-hour workday.
•This machine uses dry ice (CO2in solid form). The temperature of dry ice is -109°F (-78.9°C).
•Avoid coming into direct contact with dry ice as it may cause severe tissue damage. Study the
material safety data sheet (MSDS) of dry ice (CO2) supplied with the delivery of dry ice and follow
all the recommendations and guidelines listed therein.
•Operate the blaster in a well-ventilated work area with continuous CO2-level monitoring.
•The effects of CO2are entirely independent of the effects of oxygen deficiency.

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•CO2concentrations at 3-5% causes headaches, fast breathing, and discomfort while higher
concentrations may cause unconsciousness, suffocation, or respiratory arrest. The legal
exposure limit set by OSHA is a 0.5% average over an 8-hour workday and the acute (15 minute)
exposure limit is 3.0%.
•Always use a CO2monitoring/alarm system when working with machinery that emits CO2in a
confined room/space.
Electrostatic Discharge
WARNING - Dry ice blasting may create electrostatic discharges which may
harm personnel. Ensure that the surfaces being cleaned are properly
grounded with the supplied grounding cable. This machine is fitted with
effective electrostatic dischargers to prevent injury or damage. It is
recommended to avoid operating the machine near explosive or flammable
material. Also, use a non-metallic scoop when handling dry ice to eliminate
any electrostatic discharge.
Electrical Grounding
WARNING - To prevent electrical shock, the machine must be properly
grounded using outlets and power cords that have a ground lug. The
machine must be plugged into a properly grounded outlet. If there is no
ground connection, DO NOT USE.
Safety Labels
The symbols used on the machine were developed by the International Organization for
Standardization (ISO) and are defined below. These symbols may include yellow warning triangles, blue
mandatory action circles or red prohibited action circles. Replace any safety labels or warning signs if
they become damaged, missing, or illegible. Contact Cold Jet’s customer service department to obtain
replacement labels.

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Symbol
Definition
Never point the applicator at persons
Attention
Cold Temperature Warning
Danger of Electrostatic Discharge
Wear ear and eye protection / protective face shield
Wear protective clothing
Wear dust mask
Read operator manual
Cautions and Warnings
Please review the following cautions and warnings before operating or performing maintenance on the
machine.
CAUTION
Read the entire operator manual before using the machine. Only qualified personnel
should operate the machine.
WARNING
Ensure adequate ventilation when operating this equipment to prevent the build-up of
carbon dioxide gas. If used indoors or other confined space, a CO2detector should be
used to monitor for excessive unsafe levels of CO2gas and provide a suitable warning.
The legal exposure limit by OSHA is a 0.5% average over an 8-hour workday and the
acute (15 minute) exposure limit is 3.0%.

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WARNING
Ensure that expended dry ice pellet/particle emissions are not in the vicinity of air ducts
that could allow CO2to enter another space.
WARNING
Due to the nature of dry ice and atmospheric conditions, use caution when operating,
storing, and cleaning the machine as condensate can build up and leave moisture on
the ground near the machine and blast hose. It is recommended to wear appropriate
non-slip work shoes and it is necessary to wipe up and dry any condensate from the
work area that could cause a slip hazard.
WARNING
This machine has been designed for use with dry ice blocks and 3mm dry ice pellets
recommended by Cold Jet. The use of other cleaning agents or chemicals may adversely
affect the safety of the machine.
WARNING
High pressure blast streams can be dangerous if subject to misuse. The blast stream
must never be directed at persons, live electrical equipment, or the machine itself.
WARNING
Do not use the machine within range of persons unless they wear the required
personal protective equipment (PPE).
WARNING
This machine should not be operated by or left unattended around children or
untrained personnel.
WARNING
High pressure hoses, fittings, and couplings are important for the safety of the machine.
Use only hoses, fittings, and couplings supplied by Cold Jet.
WARNING
To ensure machine safety, use only original and replacement parts from Cold Jet.
WARNING
The applicator and blast hose contain electrical connections. Do not immerse in water.
WARNING
Only use Cold Jet applicators, nozzles, and hoses.
WARNING
Do not use the machine if an electrical supply cord or important parts of the machine
are damaged or missing, e.g., safety devices, side panels, guards, high pressure hoses,
applicator, hardware, nuts, bolts, screws.
WARNING
Inadequate extension cords can be dangerous. If an extension cord is used, it must be
suitable for the environment in which it is used. If used outdoors the connection must

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be kept dry and off the ground. It is recommended that this is accomplished by means
of a cord reel which keeps the socket at least 2.4 inches (60 mm) above the ground.
Ensure that the extension cord is properly sized for the machine electrical
requirements.
WARNING
Always switch off the main disconnecting switch, or unplug the blaster power cord,
bleed any pressure, and disconnect the air supply when leaving the machine
unattended or shutting down. Reel the power cord up to the machine and place a
locking device over the plug of the unit when Lockout Tagout is necessary.
WARNING
Ensure all machine covers are in place before operating the machine.
WARNING
Dry ice blasting may create electrostatic discharges which may harm personnel. Ensure
that the surfaces being cleaned are properly grounded with the supplied grounding
cable.
Lockout Tagout
•Throughout this manual, Lockout Tagout will be referred to in instances when power must be
removed from the machine.
•There are universally accepted basics to this procedure. The minimum steps are listed below but
may not be limited to these steps; each individual entity owning and/or operating a machine
may have their own additional procedures.
Procedure
NOTE: There are two energy sources that supply the machine –an electrical supply and a compressed
air supply. Both energy sources must be removed.
1. Shut Down: Use the machine’s power button to turn off power.
2. Isolation:
a. Unplug the power cord from the supply source.
b. Leave the power cord within visual distance of the machine.
c. Turn off the compressed air supplying the machine.
d. Turn the air bleed knob on the right side of the machine to the open position.
e. Disconnect the compressed air supply.

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3. Check for Stored Energy: At the applicator, press the “Air-Only” once, pull the trigger. No activity
should be present at the machine.
4. Isolation Verification: Does the machine have electric power or compressed air present? The
power button should not be lit; it should be off. The HMI display should have no images present.
At the applicator, press the “Air-Only” once, pull the trigger. No activity should be present at the
machine.
5. Verify the reason for using the Lockout Tagout procedure has been solved. Once you
verify that the problem is solved, follow the instructions in the Starting the Machine section of
this manual.
Emergency Stop
CAUTION - Do not use the Emergency Stop button to shut down the
machine for anything other than an emergency.
•The Emergency Stop button is used if the machine must be shut down immediately.
•If any event occurs that could cause harm to personnel or equipment, then use the Emergency
Stop to shut down the machine.
•The Emergency Stop button is a push button. Once pushed, the button becomes locked in the
down position. The button must be rotated clockwise to reset. Once rotated, the button will pop
outward to its ready state. The display on the machine will show the Reset Screen. See Reset
Screen section for instructions on how to use the machine again.
•NOTE: When the machine is in idle, such as between cleaning cycles, the machine has full power
to all functions and motors.
•NOTE: When the Emergency Stop has been activated, there is only power going to the control
board and safety relay. Nothing on the machine will operate until the Emergency Stop has been
reset.

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Reset Screen
•The reset screen appears if the Emergency Stop Button has been depressed (activated) or if the lid
to the trough has been opened.
•If an emergency has occurred in which the Emergency Stop button has been depressed (activated)
oCorrect any issues that initially caused the emergency.
oWhen the issue(s) have been corrected, reset the Emergency Stop button.
oPress the rotary encoder dial on the reset screen as shown above. This will cause the
machine to go through a calibration sequence that lasts about (15) seconds. It will then
return to its last mode of operation prior to shut down.
•If the trough has been opened, close it. Then, press the rotary encoder dial on the reset screen as
shown above. This will cause the machine to go through a calibration sequence that lasts about (15)
seconds. It will then return to its last mode of operation prior to shut down.
System Description
The standard machine package includes:
•1/2 in (12.7 mm) Precision Applicator with on/off, air-only, light control.
•1/2 in (12.7 mm) Blast Hose
•1/2 in (12.7 mm) Air Supply Hose
•Choice of 2 Nozzles
•Mobility Cart - Your choice of standard storage cart (2A0620) OR thermo-cart (2A0592) with a
built-in cooler for dry ice storage

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Machine Data
Machine Dimensions
31 x 19 x 21 in (780 x 480 x 520 mm)
Machine + Cart Dimensions
31 x 25 x 47 in (780 x 620 x 1200 mm)
Machine Weight
133 lb. (60 kg)
Machine + Cart Weight
190 lb. (86 kg)
Blast Medium
Shaved Dry Ice Particles (Blocks / Pellets)
Dry Ice Capacity
Up to 25 lb. (11 kg)
Power Requirement
110/240VAC (50/60 Hz)
Air Supply Pressure Range
50 - 145 psi (3.4 -10 bar)
Air Consumption Range
12-50 cfm (0.3 -1.4 m3/min) at 80 psi (5.5 bar)
Air Flow Path
1/2 in (13 mm)
Blast Pressure Range
20 - 145 psi (1.4 - 10 bar)
Variable Feed Rate
0-1.5 lb./min (0 –0.7 kg/min)
Control/Display
7 in (177.8 mm) LCD screen with rotary encoder dial
Communication
IoT connectivity via a cellular service and Cold Jet CONNECT® capability

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Machine Components
Applicator Components
1
2
3
4
5
7
6
9
11
12
8
10
13
14
15
1. Control Cable Connection
2. Blast Hose Connection
3. Static Ground Reel
4. Rotary Encoder Dial
5. Power Button [ON –Indicator LED = Blue]
6. HMI Screen
7. Dry Ice Trough
8. Trough Dry Ice Level LED Indicator
9. Air Supply Connection
10. Power Cord Connection
11. Air Bleed Valve
12. Emergency Stop
13. Cabinet Drawer
14. Cabinet Access
15. Wheels with locking mechanism
1
2
3
4
5
7
6
1. Applicator Controls
2. Blast Hose Connection
3. Control Cable Connection
4. Illumination Lights
5. Trigger
6. Nozzle Connection
7. Safety Switch
NOTE: The applicator trigger has a
safety switch that must be
depressed first before the
trigger will activate.

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Applicator Controls
Nozzles
•There are many different nozzles available, depending on what is being cleaned and how
accessible it is. Specialty nozzles are also available. Contact Cold Jet's customer service
department to determine the nozzle that may be most effective for your application.
Nozzle
Air Consumption
Blast Swath
Dry Ice Feed Rate
Length
Material
(MC13)
Yellow
12 CFM@80 psi
(0.3 m
3
/min 5.5 bar)
0.13 in
(.3 cm)
0.1-0.4 lbs/min
.05-0.2 kg/min
6 in
(15.2 cm)
Plastic
(MC19)
White
30 CFM@80 psi
(0.8 m
3
/min 5.5 bar)
0.19 in
(.5 cm)
0.2-1.0 lbs/min
0.1-0.5 kg/min
6 in
(15.2 cm)
Plastic
(MC31)
Blue
50 CFM@80 psi
(1.5 m
3
/min 5.5 bar)
0.31 in
(.8 cm)
0.5-1.2 lbs/min
0.2-0.6 kg/min
6 in
(15.2 cm)
Plastic
Fan Nozzles
(MC47)
25 CFM@80 psi
(0.7 m
3
/min 5.5 bar)
Fan
0.47 in
(1.2 cm)
0.2-1 lbs/min
0.1-0.5 kg/min
6 in
(15.2 cm)
Plastic &
Aluminum
(MC28)
25 CFM@80 psi
(0.7 m
3
/min 5.5 bar)
Fan
.28 in
(.7 cm)
.2-1 lbs/min
0.1-0.5 kg/min
6 in
(15.2 cm)
Plastic &
Aluminum
(MC35)
25 CFM@80 psi
(0.7 m
3
/min 5.5 bar)
Fan
0.35 in
(.9 cm)
0.2-1 lbs/min
0.1-0.5 kg/min
6 in
(15.2 cm)
Plastic &
Aluminum
(MC88F)
25 CFM@80 psi
(0.7 m
3
/min 5.5 bar)
Fragmenting Fan
0.88 in
(2.2) cm
0.2-1 lbs/min
0.1-0.5 kg/min
5 in
(12.7 cm)
Plastic &
Aluminum
(MC88)
30 CFM@80 psi
(0.9 m
3
/min 5.5 bar)
Fan
0.88 in
(2.2 cm)
0.5-1.2 lbs/min
0.2-0.6 kg/min
5 in
(12.7 cm)
Plastic &
Aluminum

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Control Panel and HMI Screens
•This machine uses a rotary encoder dial that allows the operator to navigate, select, and adjust
settings on the control panel screen. You must first press the rotary encoder to activate navigation.
•Navigate between options by turning the rotary encoder dial left or right; this will highlight the
option in blue. Once the desired option is highlighted, simply press the dial to select it; this will
highlight the option in green. With the option selected (green), turn the rotary encoder dial left or
right to adjust the setting, then press again to accept.
•To access other screens (i.e., recipes, machine status, advanced settings, applicator light, screen
lock) using the rotary encoder dial, navigate to the settings screen and press to select. Continue to
navigate through the screens and adjust the settings as needed by turning and pressing the rotary
encoder dial.
•Once the settings are completed and after approximately (30) seconds, the screen on the control
panel will change to a screen saver with incoming air pressure and feed rate.
•There are 2 screen states for the machine.
oA home screen with a blue background.
Nozzle
Air Consumption
Blast Swath
Dry Ice Feed Rate
Length
Material
Angled Nozzles
(MC25A45)
25 CFM
0.7 m
3
/min
0.25 in
(.6 cm)
0.2-1 lbs/min
0.1-0.5 kg/min
6 in
(15.2 cm)
Aluminum
(MC25A90)
25 CFM
0.7 m
3
/min
0.25 in
(.6 cm)
0.2-1 lbs/min
0.1-0.5 kg/min
6 in
(15.2 cm)
Aluminum
Advanced Nozzles
(MC26M)
35 CFM
1.0 m
3
/min
0.26 in
(.7 cm)
0.2-1.2 lbs/min
0.1-0.6 kg/min
5 in
(12.7 cm)
Plastic &
Aluminum
(MC29MH)
50 CFM
1.5 m
3
/min
0.29 in
(.7 cm)
0.5-1.2 lbs/min
0.2-0.6 kg/min
6 in
(15.2 cm)
Plastic &
Aluminum

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oA settings screen with a black background.
•During operation, the HMI screen will have an indicator at the bottom of the screen that will
change colors to convey the level of dry ice in the trough.
Color
Level
HMI Screen
Green
Full
Yellow
Half Full
Red
Low
•During operation, the numbers on the screen will change colors to indicate normal operation or
a failure mode.
oWhite (numbers on blue background) and Blue (numbers on white background) = Normal
oOrange= Warning
oRed = Critical - Needs Attention
Example Screen Showing Red/Needs Attention Numbers

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Operation
Unpacking the Machine
This machine has been assembled and tested as one unit prior to shipment. Follow the steps below to
inspect and unpack the machine from the shipping container.
1. Examine the shipping container for any damage that may have occurred during transport.
2. Remove the machine. Recycle boxes and packaging.
3. Examine the machine for any external damage that may have occurred during transport.
Refer to the packing slip for a list of the components shipped with the machine. Contact Cold Jet if any
damage has occurred to the shipping container or the machine or if any components are missing.
Transport, Storage, and Disposal
The following instructions are for proper transport of the machine. Follow all instructions as illustrated
to avoid damaging the machine. It is recommended that only trained and qualified personnel use and
move the machine. Contact Cold Jet Customer Service for proper disposal instructions at the end of the
machine’s life.
Transport Methods
•Do not strap over the screen as this could damage the screen and/or components for operating the
machine.
•Strap the machine as shown below.
•Strapping the machine for long periods of time is not advised.
•Always remove any straps or rigging equipment prior to operating the machine.

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Ensure that the two cabinet locks on each side of the machine are secure. If the locks are not secure
push on the locks till, they are locked in the position shown below.
Transport Method (Short Distances)
Secure the machine before lifting or moving on a forklift to prevent it from sliding or falling off the skid.
Cabinet Locks

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Do not lift the machine using the lid handlebar or the rear cable holder
as there will be no stability which could cause damage to equipment or
harm to personnel.
To store the machine, go to the Shutting Down the Machine section of this manual.
Machine Setup
Improper installation of the machine or the applicator could cause injury
to the operator.
Follow Lockout Tagout procedures and always shut off the air pressure
while attaching or disconnecting hoses or fittings to the machine.
Prior to disconnecting the air supply hose, ensure the air pressure has
been shut off and pressure bled from the hose. The air hose is normally
pressurized while in idle or in operation.
Do not use one wrench when tightening or replacing fittings. Always use
two wrenches to install and remove hoses and accessories.
When attaching the blast hose, make sure to put a 1in wrench on the
base connection of the rotary union. DO NOT rely on the polymer
housing to keep it from rotating. Any connections that are frozen should
be thawed by running air only through the applicator if machine has
been in operation.
WARNING
WARNING
WARNING
CAUTION
CAUTION