Stirling CPF370L20 User manual

CPF370L20
Stirling Mobile Refrigerator
Operating Manual
1 Stirling road, north economic development zone, rizhao city, shandong province, China www.chinastirling.com

Operating Manual: CPF370L20 www.chinastirling.com
CPF370L20
Stirling Mobile Refrigerator
Read this operation manual carefully before using the product. Improper
handling may result in an accident. Be sure to save this manual.
Table of Contents
1. Product Intro.................................................................................................................... 1
1.1. Description.................................................................................................................. 1
1.2. Manual Contents......................................................................................................... 1
2. Precautions for Safe Operation.......................................................................................2
2.1. Warnings..................................................................................................................... 3
2.2. Cautions.......................................................................................................................3
3. Features of the CPF370L20............................................................................................. 5
3.1. FPSC and Refrigeration.............................................................................................. 5
3.2. Power and Temperature Control................................................................................. 5
3.3. Power Adapter and Cord............................................................................................. 5
3.4. Thermal Insulation...................................................................................................... 5
3.5. Graphical User Interface............................................................................................. 6
3.6. Tracking and Monitoring............................................................................................ 6
4. Unpacking and Setup....................................................................................................... 9
4.1. Unpacking................................................................................................................... 9
4.2. Setup............................................................................................................................9
5. Operation........................................................................................................................ 11
5.1. Responsible Operation.............................................................................................. 11
5.2. UI operation guidelines............................................................................................. 12
5.3. Error / Alarms and Troubleshooting......................................................................... 17
6. Maintenance & Service.................................................................................................. 19
6.1. Cleaning Stirling Mobile Refrigerator...................................................................... 19
6.2. Control Box Cleaning................................................................................................19
6.3. Managing Refrigerator Contents............................................................................... 19
7. Troubleshooting..............................................................................................................20
8. Specifications.................................................................................................................. 21
8.1. Stirling Mobile Refrigerator Specifications.............................................................. 21
8.2. Stirling Mobile Refrigerator Dimensions..................................................................22
8.3. Stirling Mobile Refrigerator Performance Curve......................................................23
9. Warranty.........................................................................................................................24

Operating Manual: CPF370L20 www.chinastirling.com
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1. Product Intro
1.1. Description
The CPF370L20 Stirling Mobile Refrigerator with free-piston Stirling engine
technology and roto-moulding technology differs from conventional
compressor-based refrigeration. It provides high temperature efficiency,
deep-temperature cooling in a lightweight package allowing true portable
operation.
The China Stirling CPF370L20 Stirling Mobile Refrigerator uses air flow
technique for refrigeration, highly advanced free piston Stirling technology,
wide temperature range, precise temperature control of ±0.1 °C, light weight,
easy to use, specially designed power control system and built-in backup battery.
Providing low temperature storage and portable carrying for different products
with a stable, AI controlled, deeply-frozen environment. This product is Using a
user friendly UI (User Interface) which is easy to understand and use.
It is classified for use as stationary equipment in a Pollution Degree 2. The unit
is designed to operate under the following environmental conditions:
Indoor and outdoor use
Altitude up to 2000 Meter
Maximum relative humidity 80% for temperatures up to 35°C
1.2. Manual Contents
This manual consist of:
Safety Precautions
Features
Setup
Product Usage
Maintenance
Troubleshooting
Specifications
Warranty
This operating manual describes all aspects of receiving, installing, using and
storage of the China Stirling CPF370L20 Stirling Mobile Refrigerator.
The Refrigerator is controlled with a User Interface (UI) screen. This operating
manual describes use of the UI in Section 5.

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2. Precautions for Safe Operation
Before use, please read the following safety precautions carefully to prevent you
and people around you from injury and your property from being damaged.
Potential hazards associated with use of the CPF370L20 Stirling Mobile
Refrigerator may impact the safety of persons in the workplace in which the
Refrigerator is placed. The Refrigerator itself may also be damaged and/or its
warranty voided by improper operation or usage. All personnel that operate,
transport or place the Refrigerator into storage should read this entire manual to
understand those hazards. Consider storing this manual for ready reference
within close proximity of the freezer.
Before reading the instruction of how to use, please understand the meaning of
following marks and indications.
User Advisory:
Use proper precautions when operating in mobile usage. China Stirling cannot
be held responsible for damages or loss of stored product attributed to
unintended use. In no case will China Stirling be held liable for loss of stored
product resulting from electrical, mechanical or structural failure. As with any
ultra-low temperature freezer, appropriate back-up and redundancy
considerations are the responsibility of the user.
To assure the correct use of the product, basic safety measures should always be
followed including the warnings and cautions listed on the product and in this
operating manual.
Hazard Symbols
WARNING: This symbol indicates a potentially hazardous
situations which if not avoided could result in serious injury or
death.
CAUTION: This symbol indicates a potentially hazardous
situation which if not avoided could result in minor to moderate
injury or damage.
This symbol is used to indicate important prohibited handling of
the machine and alert the user to possible risks of personal injury
and equipment damage.

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2.1. Warnings
WARNING!
Failure to observe WARNING signs could result in a hazard to
personnel possibly resulting in serious injury or Death
Do not put CPF370L20 in rain or pouring water on the unit or
operate where water may drip or fall on the unit electrical box.
Operation under extreme environmental conditions, e.g., in very high
humidity environments (RH 80% or more) also may lead to
condensation or water intrusion.
Do not block the air vent inside the Refrigerator, blocking air vent
may cause temperature rise inside the Refrigerator and damage the
stored items.
Do not put CPF370L20 near to fire, may catch fire which will cause
the internal gas to expand or even explode.
Do not put store flammable gaseous or liquids.
(Danger of explosion from gasoline, thinner, spray, etc.)
Do not let the children use the unit alone. Keep infant away from unit.
(Risk of burn and electric shocks)
Do not touch inside the Refrigerator cooling part with wet hands
while operating on low temperatures. (Risk of frostbite)
Do not touch any electrical parts such as the power supply plug or any
switches with a wet hand. That may cause electric shock lead to death
or injury.
If there is an unexpected sound, smell, smoke when the power is
turned on, unplug the power and contact the manufacturer or supplier.
Continued abnormal operation may cause electric shock or fire.
Do not disassemble, modify or repair the Refrigerator. There are no
user serviceable parts inside the CPF370L20 unit. Contact China
Stirling for authorized repair procedures as required.
Do not use if power cable, DC plug or power plug are damaged or
loose. (May cause electric shock, short circuit or combustion)
Do not cut, modify, damage, forcefully bend or knot the power
cable. Also placing heavy objects or forcing the cable to put in small
space can damage the cable resulting in electric shock.

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2.2. Cautions
CAUTIONS!
Failure to observe CAUTIONS signs could result in a hazard to
personnel injury AND damage to the equipment
Operating the unit in extreme environment conditions (35℃ 、RH
80%) using Air conditioner is recommended to extend the life span of
the unit.
Do not fill up the Refrigerator to the top, leave clearance on top for
airflow and on door side for closing the door properly.
(Temperature may rise causing damage to stored products)
Be especially careful that materials at low temperatures are not
spilled onto skin or clothing.
(Risk of frostbite and injury)
Do not use Refrigerator in the truck without any adequate
ventilation. (Temperature may rise causing damage to product)
Do not place weight or any object on the unit.
(Refrigerator UI on the top can be damaged)
When removing the power plug be sure to hold plug not cable.
(There is Danger of causing electric shock or short circuit )
Avoid strong physical shock or dropping of objects on the unit.
(This may cause damage to electronic components inside)
Remove the plug before turning off engine of the vehicle.
(Power does not turn off after switching off the engine in some
vehicles, Refrigerator can draw power from truck battery)
Do not put ice or liquid water directly in the Refrigerator, always
use suitable containers. Also do not store dry ice. (May cause
malfunction or burst)
Do not use glass containers when the contents might freeze and
expand
Do not block the air vents of Stirling Mobile Refrigerator (May
cause malfunction).
Do not use hard and/or sharp objects, such as knives, screw drivers,
etc. to remove any frost or ice from Refrigerator. Use standard
defrosting, defrosting the Refrigerator is described later in this
operating manual.
Warning: Unauthorized modification to the unit, controls or free-piston Stirling engine is
prohibited and will void all warranty provisions.

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3. Features of the CPF370L20
The China Stirling CPF370L20 Stirling Mobile Refrigerator is designed to
provide a wide range of temperature from high to low temperature for storage and
transportation for the products need any temperature from high to low
temperature such as fruits, drinks, drugs and meat products, intended for domestic
or commercial purposes .
3.1. FPSC and Refrigeration
The China Stirling CPF370L20 Stirling Mobile Refrigerator use two Cryo S 100
Free Piston Stirling cooler as the refrigeration core. The Cryo S series Stirling
engine uses approximately 3 grams of helium gas as a working fluid. Using no
coolants for refrigeration purpose, air flow technique is used for refrigeration in
freezer. Working in full temperature zone, low power consumption, low noise,
complete 360 degree omnidirectional defense shake. Stirling Mobile
Refrigerator have built-in heating system used for defrosting and also for
keeping the hot temperature of cabinet when ever needed.
3.2. Power and Temperature Control
Stirling Mobile Refrigerator is equipped with built-in battery providing the
backup power to Refrigerator for half hour to give stable temperature all the
time. Gpro control board with AI algorithm programming control the FPSC
power to maintain the temperature of freezer, temperature sensors (PT100)
measures the internal Refrigerator temperature and machine cold head
temperature and provides input to the controller. The UI provides the display
and control for setting the desired temperature for freezer.
3.3. Power Adapter and Cord
A simple line cord change can allow for multiple power and receptacle types.
Make sure to use the cord and plug appropriate for your location. Power Adapter
operation range is:
Voltage input 100VAC-240VAC (Standard three-pin plug)
Frequency 50Hz or 60Hz
Output DC 30V / 7A (max:)
3.4. Thermal Insulation
For the protection of transported and stored products from the outside
temperature, Refrigerator is designed with hard plastic with thermal insulation
for the better results using roto-mouldiong technology, China Stirling

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CPF370L20 Stirling Mobile Refrigerator have high performance pressurized
polyurethane foam insulation.
3.5. Graphical User Interface
The User Interface (UI) is implemented on a touch screen control on the upper
part of the unit. The UI allows the user to:
Display all temperature and power status
Display Refrigerator and WIFI status
Display Refrigerator identification information
Set the temperature and Power
Set Refrigerator control and communications parameters
3.6. Tracking and Monitoring
Equipped with the new Stage mOS 3.0 and LOTA FPSC control hardware,
built-in Glonass, GPS global positioning and timing system, 4G LTE / Wi-Fi /
Bluetooth / Zigbee all-weather stable connection, remote start and stop,
configuration monitoring, real-time temperature curve , 6DOF motion processor
collects and analyzes all equipment motion data, opening a new chapter for your
precise products transport and storage service.
The China Stirling CPF370L20 Stirling Mobile Refrigerator has the following
features:
2
1
4

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1．UI Screen
UI and control described more in section 5.
2．Door gasket
Double Rubber gasket for tight fitting and seal from moisture make it secure.
3．Door Locks
Three door lock in a line.
8

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4．Wheels with locks
Hard plastic wheels with stop locks.
5．Handles
Making it easy to move.
6．Switch and Socket
Power switch for machine and DC B-type socket.
7．Exhaust vent
Flowing hot air outside the FPSC.
8．Air vent
Fresh air intake vent for cooling of FPSC.

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4. Unpacking and Setup
NOTE: Prior to setting up the CPF370L20, inspect the unpacked unit and any
included items for shipping damage. Compare all contents to the packing list for
completeness.
4.1. Unpacking
Remove the Stirling Mobile Refrigerator and all accessories from the box.
Carefully inspect the Refrigerator and all accessories for any shipping damage.
Check the packing list to verify that the shipment is complete.
Included Items:
Packing List
Operating Manual (this document)
Qualification Certificate
Mobile Refrigerator unit
AC Adapter
Power Cord
Cigarette lighter cable (Optional)
Unpack Refrigerator unit and included components, ensure all packaging material
has been removed around the air inlet and outlet holes.
4.2. Setup
A. Using AC Power source:
After unpacking the Mobile Refrigerator , it can be c onnect to a power source.
The Stirling Mobile Refrigerator can be used with either the AC Power source
through AC-DC adaptor comes with the Stirling Mobile Refrigerator for lab and
storage area, home and office use or the 24V-30V DC Power supply for mobile
use in vehicles, it is recommended that the initial pull-down to Set-point be
completed via AC power.
Power Adapter

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Power Cord
During setup, identify the power cord and plug configuration available and
then locate the appropriate line cord to attach with power adapter.
Use the B-type DC plug to connect the adaptor to Refrigerator, insert the plug
in to DC socket, press the plug firmly into the connection port. Turn ON the
Refrigerator by using the switch on the machine above the socket.
Once the power switch is turned ON, unit will be powered and display screen
will be ON after a “BEEP”. Follow the instructions from section 5 of this
operating manual to setup the parameters on the UI.
B. Using DC Power source:
Use B-type Plug with cigarette lighter for using DC power source of 24V-30V.
Use same same procedure as AC system.
Cigarette Lighter Cable
NOTE: For direct use of DC power input systems must be over 24V and 10 A ,
consult your automotive specialist if your vehicle lacks 10 A rated 24V outlets.

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5. Operation
5.1. Responsible Operation
Responsibility for Refrigerator operation should be part of the policy and
procedure documentation or guidelines for the Stirling Mobile Refrigerator
usage. Safety requirements are integral to these responsibilities, use this product
only in the way described in the product literature and in this manual. Before
using it, verify that this product is suitable for its intended use. If this equipment
is used in a manner not specified by the manufacturer, the protection provided
by the equipment may be impaired.
Important changes to the Refrigerator settings require sustained button pushes,
this helps prevent accidental changes to the settings during transportation.
Turning the Stirling Mobile Refrigerator ON/OFF requires a Touch on the
Power button. The default display is the cooling temperature of Freezer, other
displays such as Set-point, ambient temperature, etc., are tagged with such
names and described in detail in the UI guideline section.
Operation for the AC and DC system is described in the section 4, operation in
vehicle DC system need extra precautions to avoid any incidents.
Notes on operation in a vehicle:
1. Connect cigarette lighter plug to vehicle after starting the engine.
2. The vehicle engine should be running during the operation of Stirling
Mobile Refrigerator to prevent accidental discharge of the battery.
3. Do not operate the Stirling Mobile Refrigerator in an unattended vehicle.
Disconnecting from power:
1) Turn OFF the Stirling Mobile Refrigerator (Press Power button on UI)
2) The Stirling Mobile Refrigerator will give beep sound while the unit turns
off.
3) Turn OFF the switch and unplug adaptor cable from the Stirling Mobile
Refrigerator after 30 sec of beep if battery is fully charged.
4) Do the same while using the Refrigerator in the transport truck.
5) If you unplug the Stirling Mobile Refrigerator while it is on, you will hear
a sudden noise as the free-piston Stirling engine power is switched from
main power supply to battery and will cause the noise. This noise
(described as a “bonk”) is not indicative of damage.

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5.2. UI operation guidelines
Values for the Stirling Mobile Refrigerator CPF370L20 parameters can be
viewed and modified through the UI (User Interface) touch screen. Important
changes to the Refrigerator settings require sustained button pushes, UI have
screen lock that helps prevent accidental changes to the settings. Temperature
can be set as needed on main screen with a touch.
The UI is programmed with default values for most parameters. Unless
parameters limits are set manually, machine will work on default values.
The applicable model and operation:
Current program of the CPF370L20 Refrigerator is applicable to G-pro driver
board and 4.5 inch IPS resistive touch screen. Program version number cab be
seen on the display screen.
Have a Quick View at Simple operation procedure, programming is done for
friendly interface and equipment running. Keep on reading for details about the
UI and it’s usage.
The interface description:
The program has designed a total of 6 (six) operation interfaces: the boot
interface, the main interface, the Wi-Fi setting interface and the Wi-Fi
configuration interface, user setting interface and factory setting interface. The
switching between the interfaces is realized by touching the appropriate buttons
or specific area of screen. Each interface is describe below with each point.
Read carefully for better understanding and usage to avoid any mishap or
incident.
1. Boot interface display instructions:
After booting, the screen displays China Stirling logo for one second.

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2. The main interface displays the operation instructions:
This interface is the default display interface and consists of 13 parts:
1. Display Logo, you can set whether to display it through the factory
interface
2. Power input \ GPS \ Wi-Fi display
3. Display the current mode (off / cooling / heating)
4. Display the set target temperature
5. Change target temperature
6. Temperature curve, showing the current temperature curve
7. Display the current temperature inside the cabinet
8. Display ambient temperature
9. Machine running time
10. Press to lock or unlock the screen
11. Press to enter the user setting interface
12. Press to enter Wi-Fi configuration interface
13. Press the Power Button to ON/OFF the machine

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3. Wi-Fi setting interface displays operation instructions:
This consists of 5 parts：
1) Back button, click to return to the previous interface
2) Official LOTA page QR code
1. Scan QR code
2. Pay attention to the public number
3.Follow the page prompts after scan
3) Wi-Fi configuration
4) OTA upgrade
5) Program version number
4. Wi-Fi configuration operation instructions
This interface consists of 4 parts:

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1. Back button, click to return to the previous interface;
2. Reset the Wi-Fi. Use it when airkiss is stuck or Wi-Fi is abnormal.
Click to restore the Wi-Fi configuration to factory settings. Connect
USR-215 or USR-126 to the hand held terminal and enter
“10.10.100.254” in the browser to configure
3. Turn off Wi-Fi echo (must click after resetting the configuration)
4. Set up airkiss distribution network (must click after resetting the
configuration)
5. User setting interface operation instructions
The interface consists of 11 parts:
1．Back button, click to return to the previous interface;
2．Automatic switch button,
3．Turn on the password button, click to set the password according to
personal needs, ON/OFF
4．RFID management, NFC card management;
5．Screen off time display, click to set the screen display time;
6．Brightness setting display, click to set the display brightness of the
screen;
7．Unpacking times display, showing the current number of times the box
has been opened during work;
8．DC voltage, DC current, AC current, power, machine boost command,
current temperature and set temperature, T3 hot end temperature, T2
ambient temperature, T4 cold end temperature;

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9．Input display
10．Number buttons
11．Continuously click 6 times at bottom left corner of screen to enter
factory setting interface
6. Factory setting interface operation instructions
The interface consists of 12 parts:
1. Back button, click to return to the previous interface;
2. Maximum power: set the maximum power required by the machine,
turn the power limit to "ON" to run the machine at the set power
3. Maximum rate: Machine boost rate setting. Turn on the rate limit to
"ON" to limit the machine boost rate.
4. Master control temperature: The machine contains 5 thermometers.
The temperature of T1 is used as the master control temperature.
5. Reporting interval: the time interval for reporting data to the server
6. Temperature compensation 1: T1 temperature compensation
7. Upper temperature limit: upper target temperature setting
8. Temperature compensation 4: T4 temperature compensation
9. Lower temperature limit: lower target temperature setting
10. Alarm temperature: the hot end temperature reaches this temperature
the alarm be ON and machine will stops.
11. Alarm current: When the machine is running, the AC current reaches
the set point the alarm be ON and machine will stops.
12. Hot-end threshold: limit the operating power of the machine when hot
forging reaches this temperature.

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5.3. Error / Alarms and Troubleshooting
Errors are displayed on the UI screen as E#, as show below;
Code
Screen
alarm
Possible cause
Phenomenon
investigation
Possible
reasons
Trouble
shooting
E0
Voltage
abnormality
DC voltage is
abnormal
Fuse blown
Fuse blown
Replace fuse
Fuse not blown
Power
supply
error
Check or replace
the power supply
E1
DC current
abnormal
DC current
greater than
10A
Other
Component
damage
Contact after-sales
to return to
factory for
maintenance
E2
Abnormal
AC current
AC current
greater than set
value
Check set point
Setting
value is too
small
Modify alarm
current setting
Other
Component
damage
Contact after-sales
to return to the
factory for
maintenance
E3
High
temperature
at hot end
Hot end
temperature is
more than 55℃
High ambient
temperature
ambient
temperature
Use in the
working
temperature range
Air outlet
blocked
Air outlet
blocked
Keep the air outlet
unobstructed
Fan 1 does not
turn
Fan 1 not
wired
Check fan 1
wiring
Fan 1
damaged
Contact after-sales
to return to the
factory for
maintenance
E4
Cold end
high
temperature
Cold end
temperature is
more than 55℃
High ambient
temperature
ambient
temperature
Use in the
working
temperature range
Fan 2 does not
turn in heating
mode
Fan 2 not
wired
Check the fan 2
wiring
Fan 2
damaged
Contact after-sales
to return to the
factory for