MVE Fusion Series User manual

MVE Fusion Series

MVE FUSION Quick Reference Guide
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Quick Reference Guide
Table of Contents
NOTE: MVE Fusion cryogen freezer should be installed by Chart Personal or an
authorized MVE Distributor per the MVE Fusion Technical Manual, PN 20994124.
Product Identification
Safety…………………………………………………………………………………………………………………………………………3
Display / Control Panel……………………………………………………………………………………………………………….7
Back Panel / Electrical / Physical Connections ……………………………………………………………………………8
Dewar Plumbing Connections…………………………………………………………………………………………………….9
Setup/Filling Procedure ……………..……………………………………………………………………………………………..9
Calibration of Temperature Probe.…………………………………………………………………………………………….14
Alarms and Definitions……………………………………………………………………………………………………………….15
Contact Information…………………………………………………………………………………………………………………..15

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Safety
READ BEFORE OPERATING THIS EQUIPMENT
Liquid nitrogen (LN2) is used in MVE Fusion Freezers as a refrigerant. Understanding and
following certain safety precautions is extremely important when handling LN2 and cryogenic
containers (Dewars).
Liquid Nitrogen Properties
Nitrogen is a colorless, odorless, tasteless gas. Gaseous nitrogen makes up about 78% of the
Earth’s atmosphere by volume. Once collected and isolated, nitrogen can be liquefied.
Boiling Point @ 1 atm -195.8°C , -320.3°F , 77.4 K
Thermal Conductivity (Gas) 25.83 mW/(m·K)
Heat of Vaporization (Liquid) 198.38 kJ/kg
Density @ 1 atm (Liquid) 1.782 lbs/L , 807.4 g/L , 808.6 kg/m3
Liquid Nitrogen Safety
Transferring LN2 and operating the MVE Fusion should be done in accordance with the
manufacturer / supplier instructions. It is important that all safety precautions recommended by
the manufacturer be followed.
 Nitrogen vapor is a potential asphyxiant as it displaces Oxygen (O2)
in confined spaces. Rapid suffocation can occur without warning in
an Oxygen-deficient atmosphere (less than 19.5% O2). Chart
Cryogenic Freezers must be installed and operated in well-ventilated
areas.
 DO NOT vent container in confined spaces.
 DO NOT enter confined spaces where excess nitrogen gas may be
present.

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 If exposure has occurred move to ventilated area or fresh air. If
breathing is difficult, supplement oxygen may be required. If not
breathing, give artificial respiration. SEEK IMMEDIATE MEDICAL
ATTENTION.
 Contact with liquid nitrogen or uninsulated equipment containing
nitrogen can result in cold contact burns or tissue damage.
Nitrogen vapor can cause damage to skin or eyes.
 In case of frostbite, warm area with warm water not exceeding 105°F
(40°C) and SEEK IMMEDIATE MEDICAL ATTENTION.
 Never place LN2 in a sealed container without a pressure relief
device. The expansion ratio of liquid nitrogen to gaseous nitrogen
is 1 to 700 (1 cubic foot of liquid nitrogen becomes 700 cubic feet of
gaseous nitrogen when evaporated).
The two most important safety aspects to consider when handling LN2 are adequate ventilation
and eye and skin protection. Although nitrogen gas is non-toxic, it is dangerous in that the gas
will displace oxygen in a normal breathing atmosphere. Liquid products are of even greater threat
since a small amount of liquid evaporates into a large amount of gas. Therefore, it is imperative
that cryogenic supply and storage Dewars be stored and operated in well-ventilated areas.
Persons transferring LN2 should make every effort to protect the eyes and skin from accidental
contact with liquid or cold vapor. Chart MVE recommends the following protective clothing and
accessories when transferring LN2 or handling hoses, valves, and plumbing components:
 Cryogenic gloves (loose fitting)
 Full-face shield or chemical splash goggles
 Cryogenic apron
 Long sleeve shirt and cuffless pants
 Closed toe shoes (no sandals)

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Equipment Usage
Cryogenic containers must be operated in accordance with the manufacturer/supplier
instructions. Cryogenic Dewars must be kept in a well-ventilated area protected from weather
and away from heat sources. In applications that use a modular liquid cylinder as a source of
LN2, the supply will need to be replenished at regular intervals to ensure proper operation of the
freezer.
Recommended First Aid
Every site that stores and uses LN2 should have an appropriate Material Safety Data Sheet (MSDS)
present. The MSDS may be obtained from the manufacturer/distributor. The MSDS will specify the
symptoms of overexposure and first aid to be used. Here is a typical summary. If symptoms of asphyxia
such as headache, drowsiness, dizziness, excitation, excess salivation, vomiting, or unconsciousness are
observed, remove to fresh air. If breathing has stopped, give artificial respiration. CALL A PHSYICIAN
IMMEDIATELY.
If breathing is difficult, supplemental oxygen maybe required. If exposure to cryogenic liquids or cold vapor
occurs, restore tissue to normal, body temperature (37°C) as rapidly as possible, and then protect the
injured tissue from further damage and infection.
Rapid warming of the affected areas is best achieved by bathing it in warm water. The temperature of the
water used should not exceed 40°C. Under no circumstances should the frozen part be rubbed either before
or after warming. If the eyes are involved, flush them thoroughly with warm water for at least 15 minutes.
In case of massive exposure, remove clothing while showering with warm water. The patient should not
drink alcohol or smoke. CALL A PHYSICIAN IMMEDIATELY.

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This manual includes the following symbols.
Table 1: the symbols and their descriptions
Symbol Title Description
Caution
Signifies a CAUTION of potentially hazardous
situation when operating the device that may result in
minor to moderate injury or property damage.
Warning
Signifies a WARNING of a potentially hazardous
situation when operating the device that may result in
serious injury or property damage.
Warning; Low
Temperature
Indicates low temperature or freezing conditions. Take
care to avoid exposure to skin, eyes, and clothing.
Warning;
Asphyxiating
Atmosphere
Indicates the potential for an oxygen-depleted
atmosphere due to nitrogen vapor. Take care to
operate device in a well-ventilated area.
Warning; Electricity
Indicates a potential electrical hazard. Take care to
avoid contact with electricity.
Warning; Explosive
Indicates a potential explosive hazard. The expansion
ratio of liquid nitrogen to gas is 1:700 and can cause
explosive conditions if placed into a sealed container.
Wear Protective
Gloves
Thermal gloves must be worn during indicated
procedures.
Wear a Face Shield A face shield must be worn during indicated
procedures.
ETL Listed Mark Chart Fusion Freezer is conformed to UL STD 61010-
1 and certified to CSA STD C22.2#61010-1.
WARNING: Do not modify this equipment without authorization of the manufacturer.

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Display / Control Panel
Table 1: Front Panel Identification
Front Panel MVE FUSION Graphical User Interface (GUI)
Displays Freezer Temperature and Cryogen (LN2) Level % on home screen.
Display A Liquid Crystal Display (LCD) shows the value of all the current conditions
including Freezer Temperature and LN2 level. The display also shows any
current alarm conditions that may exist.
RTD Probe Used to monitor the internal Fusion freezer temperature.
Alarm Visual and
Audible Mutes
Used to silence the visual and audible alarms. Also used to reset the
latching global alarm after the alarm condition is corrected.

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Back Panel / Electrical / Physical Connections
1 RTD Temperature Probe Connection
2 Global Alarm Contacts (These connections monitor All Alarms)
3 Service Serial Port
4 Service Serial Port
5 Input Power
6 Main Power Switch
7 Battery Backup Power Switch
4
3
2
1
6
5
7

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Fusion Dewar Plumbing Connections
Procedure for the First Fill
1. Do not power on the Fusion until all steps are followed.
2. Make sure to have two, 230-liter liquid nitrogen cylinders at 22-35PSI for the first fill.
3. Load racks and empty boxes or alternate inventory systems into the MVE Fusion.
NOTE: VERY IMPORTANT TO ADD RACKS AND BOXES BEFORE FILLING.
CAUTION: Venting may occur which will result in a loss of cryogen inside the pressure vessel
if warm racks are installed after the Fusion’s first fill and/or if more than 1, 2, or 3 warm
racks are installed during its subsequent operation. Be prepared to have a 230-liter liquid
nitrogen cylinder @ 22-35psi to refill pressure vessel if this occurs.
Vent Valve
Pressure Relief Valve
Fill Valve

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See the rack Layout below for reference.
4. Connect one 230 cylinder full of cryogen (LN2) to the Fusions inlet valve using the supplied
transfer hose with the cane oriented in the vertical position, so the pressure relief valve can
vent downwards.
NOTE: One temperature probe will be factory installed in the backside of the Fusion Dewar.
Another aftermarket temperature sensor can be installed in the secondary sensor tube.

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CAUTION: If an aftermarket temperature sensor is not installed in the secondary sensor
tube, the tube should remain plugged with the factory installed plug.
5. Shut off the two isolation valves located underneath the shroud on both sides of the
liquefier.
6. Open the supply tank liquid valve.
7. Open the fill valve on the back of the Fusion.
Open fill valve

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8. Open the vent valve on the back of the Fusion. This will create a pressure differential
sufficient to push the LN2 from the supply tank into the freezer. The vent valve will remain
open until the Fusion freezer is filled with LN2.
9. As the Fusion freezer and its contents are at room temperature for the first fill/charge, fill
the internal sample storage area with 20-30 liters of LN2 through the neck of the tank using
the second LN2 supply tank with another transfer hose having a phase separator (Not
supplied).
10. Connect A/C electrical power to MVE Fusion power receptacle at the rear.
11. After filling the sample storage area with 20-30 liters of LN2 through the neck, install the lid
assuring that the lid lock thru hole located in the lid aligns with the lid lock tab located on
the Dewar neck.

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12. Once LN2 begins to flow steadily out of the vent valve muffler, first shut off the Fusions vent
valve, then shut off its fill valve. Lastly, shut off the fill valve on the LN2 supply tank.
13. Open both Isolation valves.
NOTE: The inner pressure should fill in about 35 to 45 minutes (using a supply source of 22-
35PSIG)
14. The freezer’s pressure relief valve will begin releasing gaseous nitrogen as the liquid boils off
and the pressure builds (above 50 PSIG) inside of the storage tank. As the internal chamber
and storage racks come down to temperature the “relief” events will decrease.
15. Once all the steps above have been completed the MVE Fusion can be powered on by
flipping the main power switch to the on position followed by flipping the BB Enable/Disable
(backup battery) switch to the on position. The Fusion’s main screen will automatically turn
on. Below shows the default LCD startup order. No programming is required for the first fill.
MVE Fusion Default Password: Fusion01
1* 2*
3* 4*
16. To turn off the MVE Fusion freezer simply flip the main power and the backup battery
switches located on the back of the Fusion to the off position.

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Calibration of Temperature Probe
The factory installed RTD temperature probe used on the MVE Fusion has been calibrated at the
factory using a two-point, low temperature range calibration method. This calibration method
provides a level of accuracy of +/- 1.8°F (+/- 1°C) when operating at altitudes between 1000ft to
1500ft (305m to 457m). Further calibration should not be required unless desired by the end
user. Refer to the MVE Fusion Technical Manual for information on calibration methods and
procedures.

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Alarms and Descriptions
Alarm Display
Description
TI
P TEMP FAULT
Issue with thermocouple located on the cryocoolers
cold tip.
SYSTEM SHUTDOWN
Fusion freezer has s
hutdown
REJECT TEMP FAULT
Issue with thermocouple located on the cryocoolers
heat rejector.
MOTOR TEMP L FAULT
Issue with thermocouple
located on the cryocoolers
left motor.
MOTOR TEMP R FAULT
Issue with thermocouple located on the cryocoolers
right motor.
TEMP A OPEN
Issue with the RTD connection.
MOTOR R OUT OF RANGE
Cryocoolers right m
otor temperature
is
out of
the
allowable range.
MOTOR L OUT OF RANGE
Cryocoolers left m
otor temperature
is
out of
the
allowable range.
TIP TEMP OUT OF RANGE
Cryocoolers cold tip
temperature
is
out of
the
allowable range.
REJECT T OUT OF RANGE
Cryocoolers reject temperature is out of the
allowable range.
TEMP A OUT OF RANGE
RTD temperature out of the allowable range.
TEMP A SHORT
Issue with RTD.
VIBRATION FAULT
Cryocoolers vibration level is out of the allowable
range.
LID OPEN
The Fusion lid has been off for more than 5 minutes.
BATTERY LOW
B
ackup b
attery
voltage is
low
.
LN2 OUT OF RANGE
Cryogen (LN2) level within the storage vessel is out of
the allowable range.
GAS PRESS OUT OF RANGE
Gas Pressure
within the storage vessel is
out of
the
allowable range.
VFD HARDWARE FAULT
Issue with the
Fusion electronics.
VFD OVER CURRENT
Issue with the Fusion electronics.
VFD OVER TEMPERATURE
Fusion electronics temperature is out of the
allowable range.
If any alarms occur please contact your authorized MVE Distributor or Customer / Technical Service
Chart Customer / Technical Service:
Phone: [phone] Fax: [phone]

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NOTES:

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Chart Inc. reserves the right to discontinue its products, or change the prices, materials, equipment, quality, descriptions, specifications and/or
processes to its products at any time without prior notice and with no further obligation or consequence. All rights not expressly stated herein are
reserved by us, as applicable. Copyright © 2017 Chart Industries
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