CHART ChillZilla VS-9000CZ User manual

Part Number 20854212 Rev. D
© 2021 Chart Inc.
Designed and Built by:
Chart Inc.
407 7th Street NW
New Prague, MN 56071 USA
[phone]
Product Manual
ChillZilla®Liquid Supply System
Liquid Nitrogen

iii
Product Manual - ChillZilla®Liquid Supply System LN2
Contents
Revision Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .v
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Product Highlights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Product Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Acronyms / Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Safety Bulletin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Oxygen Decient Atmospheres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Nitrogen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Physical Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Operator Qualications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Site Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Site Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Concrete Foundations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Site Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Other Site Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Handling Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Unloading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Receiving Checkpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Vacuum Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Vessel Tie Down Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Filling Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Initial Fill Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Purging Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Initial (Warm Tank) Filling Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Tank Relling Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Withdrawal Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Pressure Building . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Liquid Withdrawal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Quick Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Control Panel Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Control Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Emergency Shut Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Name and Description appear on Alarm List . . . . . . . . . . . . . . . . . . . . . . . . . 16

iv
Table of Contents Product Manual - ChillZilla®Liquid Supply System LN2
Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Compatibility and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Periodic Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Pressure Bulb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Vacuum Integrity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Valve Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Gauge Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Inner Tank Burst Disc Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Testing After Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Pressure Builder Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Additional Vaporizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
SCADA Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Mufer Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Liquid Level Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Wiring Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Liquid Level Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Wiring Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

v
Table of ContentsProduct Manual - ChillZilla®Liquid Supply System LN2
Revision Log
Revision Level Date Description
A 03/01/2012 Original
B 11/19/2014 Reformat
C 06/28/2018 Update screens and specs
D 08/22/2021 Updated screens
E 02/20/2024 Updated Content

1
Product Manual - ChillZilla®Liquid Supply System LN2
General
The ChillZilla Bulk LN2 Liquid Supply System is engineered
to provide consistent liquid nitrogen for optimum equipment
performance. Ideally suited for Individually Quick Frozen
(IQF), LN2 immersion freezers, and cryobiological storage
freezers, the ChillZilla LN2system features a Dynamic
Pressure Builder™ for precise saturated liquid supply to the
freezer regardless of the LN2liquid level. The ChillZilla
system incorporates an insulation bafe to inhibit the mixing
of fresh liquid from a trailer load delivery with the liquid
supply to the freezer for better liquid supply stability during
the rell.
With the aid of a patented high performance two-stage
ambient pressure building coil, the heat management of this
circuit is optimized for fast pressure recovery and reduced
heat transfer to the contents. Coupling these unique features
with the temperature monitoring of the liquid supply, a
Programmable Logic Controller (PLC), VJ feed valve with
an extended VJ pod and extended legs, the ChillZilla LN2
system automatically provides the optimum liquid nitrogen
supply to any liquid application.
Ideally suited for other LN2 applications with the same
demand, like cryogenic rubber and tire deashing. Optional
gas use conversion assembly available.
Product Highlights
• Dynamic Pressure Builder system for precise saturated
LN2 supply regardless of liquid level
• Insulation bafe with dedicated upper ll port for
uninterrupted LN2 supply during transport rell
• High performance two-stage ambient pressure builder
vaporizer for maximum efciency (20 gpm standard)
• PLC controller with actual LN2 storage temperature,
pressure and level monitoring for precise tank pressure
control (PB and vent) with automatic desaturation
capability
• High ow automatic pressure building valve improves
response time and performance after a ll along with a
tighter operating pressure dead-band
• Extended legs and vacuum insulated pod for increased
head pressure aids in dampening LN2 saturation pressure
uctuations
• Large 1-1/2” vacuum insulated inner supply line provides
20 gpm ow*
• Large 1-1/2” vacuum insulated isolation valve with
mating female bayonet for plug-n-play to Chart VIP and
ice-ball free operation
• Dual 125 psi main tank relief valves standard to protect
downstream VIP system (175 psig tank MAWP)
• Reduced deliveries and improved inventory turn-over
with 95% bulk tank capacity utilization
• High-performance Composite Super Insulation™ for ultra-
low heat leak
*1-1/2” VIP system of 300’ VIP + 5 elbows + 2 valves = 2 psi pressure drop
Product Manual
This product manual is designed to be used in conjunction
with ChillZilla LN2 Liquid Supply Systems. If there are any
questions regarding the operation of the tank, contact Chart’s
Technical Service division at 1-800-400-4683.
This manual contains information regarding the safe
operation and handling of LN2. It should be thoroughly read
and understood by anyone that operates the equipment.
The schematics and parts list in the Specication section
show a reference number for each component used on
the tank. The reference numbers may refer to the same
functional component between the various models. The
reference numbers will be used throughout this manual to
draw specic attention to a component while describing its
function, operation, or repair.
The safety requirements for operating the tank and handling
or transporting extremely cold liquid products are shown
in the Safety section. Use this safety section as a “Safety
Checklist” each time the equipment is being used.
The Introduction section discusses the general features of the
tank and the theory of operation.
In the Installation section there are illustration for how to
uncrate and install the tank.
For information on how to operate the tank refer to the
Operations section.
Refer to the Maintenance section for information on how to
maintain the tank.
Preface

2
Preface Product Manual - ChillZilla®Liquid Supply System LN2
Terms
Throughout this manual safety precautions will be designated
as follows:
Warning! Description of a condition that
can result in personal injury or
death.
Caution! Description of a condition that
can result in equipment or
component damage.
Note: A statement that contains information
that is important enough to emphasize or
repeat.
Acronyms / Abbreviations
The following acronyms / abbreviations are used throughout
this manual:
ASME American Society of Mechanical Engineers
BAR Pressure (Metric)
CGA Compressed Gas Association
GPM Gallons Per Minute
IQF Individually Quick Frozen
Kg/cm2 Kilogram-force per square centimeter
LN2Liquid Nitrogen
MAWP Maximum Allowable Working Pressure
NER Nominal Evaporation Rate
NFPA National Fire Protection Association
PB Pressure Builder
PLC Programmable Logic Controller
PN Part Number
PSI Pounds per Square Inch
PSIG Pounds per Square Inch (Gauge)
VIP Vacuum Insulated Pipe
VJ Vacuum Jacketed

3
Product Manual - ChillZilla®Liquid Supply System LN2
General
All operators should have full and complete understanding
of the content of this manual before operating the equipment
described. This manual is intended to describe the operation
of the equipment and not intended to supersede any site-
specic standards.
As with any cryogenic system, it should be observed that
any non-insulated piping can get extremely cold and should
not be touched by exposed skin. If the system requires
maintenance, it should be shut down and allowed to warm-
up.
Safety Summary
Strict compliance with proper safety and handling practices
is necessary when using a cryogenic system. We recommend
that all our customers re-emphasize safety and safe handling
practices to all their employees and customers.
While every possible safety feature has been designed into
the unit and safe operations are anticipated, it is essential
that the user of the cryogenic system carefully read to fully
understand all WARNINGS and CAUTION notes listed in
this safety summary and enumerated below.
Also read the information provided in the Safety Bulletin
for Oxygen and Inert Gases following this Safety Summary.
Periodic review of the Safety Summary is recommended.
Warning! Accidental contact of liquid
gases with skin or eyes may
cause a freezing injury similar to
a burn.
Handle liquid so that it will not splash or spill. Protect your
eyes and cover skin where the possibility of contact with
liquid, cold pipes and equipment, or cold gas exists. Safety
goggles or a face shield should be worn if liquid ejection
or splashing may occur or cold gas may issue forcefully
from equipment. Clean, insulated gloves that can be easily
removed and long sleeves are recommended for arm
protection. Cufess trousers should be worn over the shoes
to shed spilled liquid.
Caution! To prevent possible tip over,
do not leave tank standing
upright unless it is secured to its
foundation (bolted down).
Transporting and erection of the tank should be performed in
accordance with rigging instructions available from Chart.
Failure to comply with these instructions may result in
serious damage to the container.
Safety Bulletin
Portions of the following information is extracted from
Safety Bulletin SB-2 from the Compressed Gas Association,
Inc. Additional information on oxygen, nitrogen, argon, and
cryogenics is available from the CGA.
Cryogenic containers, stationary or portable, are from time
to time subjected to assorted environmental conditions of
an unforeseen nature. This safety bulletin is intended to call
attention to the fact that whenever a cryogenic container
is involved in any incident whereby the container or its
safety devices are damaged, good safety practices must be
followed. The same holds true whenever the integrity or
function of a container is suspected of abnormal operation.
Good safety practices dictate the contents of a damaged or
suspect container be carefully emptied as soon as possible.
Under no circumstances should a damaged container be left
with product in it for an extended period of time. Further, a
damaged or suspect container should not be relled unless
the unit has been repaired and re-certied.
Incidents which require that such practices be followed
include: highway accidents, immersion of a container in
water, exposure to extreme heat or re, and exposure to most
adverse weather conditions (earthquake, tornadoes, etc.)
As a rule of thumb, whenever a container is suspected of
abnormal operation, or has sustained actual damage, good
safety practices must be followed.
In the event of known or suspected container vacuum
problems (even if an extraordinary circumstances such as
those noted above has not occurred), do not continue to use
the unit. Continued use of a cryogenic container that has a
vacuum problem can lead to embrittlement and cracking.
Further, the carbon steel jacket could possibly rupture if the
unit is exposed to inordinate stress conditions caused by an
internal liquid leak.
Prior to reusing a damaged container, the unit must be
tested, evaluated, and repaired as necessary. It is highly
recommended that any damaged container be returned to
Chart for repair and re-certication.
The remainder of this safety bulletin addresses those adverse
environments that may be encountered when a cryogenic
container has been severely damaged. These are oxygen
decient atmospheres, and exposure to inert gases.
Safety

4
Safety Product Manual - ChillZilla®Liquid Supply System LN2
Oxygen Decient Atmospheres
Warning! Nitrogen vapors in air may dilute
the concentration of oxygen
necessary to support or sustain
life. Exposure to such an oxygen
decient atmosphere can lead
to unconsciousness and serious
injury, including death.
The normal oxygen content of air is approximately 21%.
Depletion of oxygen content in air, either by combustion
or by displacement with inert gas, is a potential hazard and
users should exercise suitable precautions.
One aspect of this possible hazard is the response of humans
when exposed to an atmosphere containing only 8 to 12%
oxygen. In this environment, unconsciousness can be
immediate with virtually no warning.
When the oxygen content of air is reduced to about 15
to 16%, the ame of ordinary combustible materials,
including those commonly used as fuel for heat or light,
may be extinguished. Somewhat below this concentration,
an individual breathing the air is mentally incapable of
diagnosing the situation because the onset of symptoms
such as sleepiness, fatigue, lassitude, loss of coordination,
errors in judgment and confusion can be masked by a state of
“euphoria,” leaving the victim with a false sense of security
and well being.
Human exposure to atmosphere containing 12% or less
oxygen leads to rapid unconsciousness. Unconsciousness can
occur so rapidly that the user is rendered essentially helpless.
This can occur if the condition is reached by an immediate
change of environment, or through the gradual depletion of
oxygen.
Most individuals working in or around oxygen decient
atmospheres rely on the “buddy system” for protection -
obviously the “buddy” is equally susceptible to asphyxiation
if he or she enters the area to assist the unconscious partner
unless equipped with a portable air supply. Best protection
is obtainable by equipping all individuals with a portable
supply of respirable air. Life lines are acceptable only if the
area is essentially free of obstructions and individuals can
assist one another without constraint.
If an oxygen decient atmosphere is suspected or known to
exist:
1. Use the “buddy system.” Use more than one “buddy” if
necessary to move a fellow worker in an emergency.
2. Both the worker and “buddy” should be equipped with
self-contained or airline breathing equipment.
Nitrogen
Nitrogen (inert gas) is a simple asphyxiate. This gas will
support or sustain life and can produce immediate hazardous
conditions through the displacement of oxygen. Under high
pressure nitrogen may produce narcosis even though an
adequate oxygen supply sufcient for life is present.
Nitrogen vapors in air dilute the concentration of oxygen
necessary to support or sustain life. Inhalation of high
concentrations of nitrogen can cause anoxia, resulting in
dizziness, nausea, vomiting, or unconsciousness and possibly
death. Individuals should be prohibited from entering areas
where the oxygen content is below 19% unless equipped
with a self-contained breathing apparatus. Unconsciousness
and death may occur with virtually no warning if the oxygen
concentration is below approximately 8%. Contact with cold
nitrogen gas or liquid can cause cryogenic (extreme low
temperature) burns and freeze body tissue.
Persons suffering from lack of oxygen should be
immediately moved to areas with normal atmospheres.
SELF-CONTAINED BREATHING APPARATUS MAY BE
REQUIRED TO PREVENT ASPHYXIATION OF RESCUE
WORKERS. Assisted respiration and supplemental oxygen
should be given if the victim is not breathing. If cryogenic
liquid or cold boil-off gas contacts worker’s skin or eyes,
the affected tissue should be ooded or soaked with tepid
water (105-115ºF or 41-46ºC). DO NOT USE HOT WATER.
Cryogenic burns that result in blistering or deeper tissue
freezing should be examined promptly by a physician.

5
Product Manual - ChillZilla®Liquid Supply System LN2
General
The ChillZilla LN2 Liquid Supply System is engineered
to supply consistent quality liquid nitrogen for optimum
freezing performance. By measuring the liquid parameters,
including the temperature inside the tank bottom, the
ChillZilla system automatically provides the precise liquid
conditions and supply pressure to the application regardless
of the tank liquid level.
The Chart model designation for a particular tank can be
found on the tank data plate and its associated paper work.
The model designation is broken down as Model (VS),
Capacity (11000), Inner Material (S), Insulation Type (C),
MAWP (175).
Note: RefertotheSpecicationsectionof
thismanualtoseethespecicmodel
specication,charts,schematics,and
partscoveredbythecontentsofthis
manual.
Features
The tanks are designed to provide a convenient, reliable and
economical method for the storage and delivery of liquid
nitrogen. Important features of these containers include:
• Long-term hold time due to highly efcient multi-layer
insulation systems.
• A pressure building system that can be used to increase
working pressure during high withdrawal operations.
• A top and bottom ll line that allows the tank to be
relled from a liquid supply unit by either pumping or
pressure transfer.
• Simple and convenient piping controls to reduce the
number of ttings and components. The control valves
are modular units. The ll module has top, bottom and
pressure control isolation valves. The pressure control
regulator acts as the pressure builder and economizer with
a built-in isolation valve. The vent module has a dual
safety valve and manual vent valve.
Physical Description
A Chart tank is designed for long-term storage of cryogenic
liqueed gases under pressure up to 175 psig (17.6 kg/cm2).
While hardware may vary slightly from model to model,
each unit essentially performs the same functions.
The tank is comprised of a stainless steel inner tank encased
in an outer carbon steel vacuum shell. The insulation system
between the inner and outer containers consists of multiple
layers, and high vacuum to ensure long holding time. The
insulation system, designed for long-term vacuum retention,
is permanently sealed at the factory to ensure vacuum
integrity. The units have a tank pressure relief device which
is set at the factory. As a secondary pressure relief device,
the container is further protected from over-pressurization
by a rupture disc. The bursting disc will rupture completely
to relieve inner tank pressure in the event the tank relief
valve fails and pressure exceeds the rupture disc setting. The
vacuum space is protected from over-pressurization by use of
a tank annulus rupture disc assembly.
The tanks are leg mounted. Lifting lugs are secured to the
bottom head and to the top head of the container. The lifting
lugs are provided to facilitate handling. Moving requires the
use of a crane and adherence to specic rigging instructions
which may vary from vessel to vessel. Some Chart tanks
cannot be lifted with only one hook.
Controls used to operate the system are mounted under and
on the sides of the customer station. The pressure gauge and
liquid level gauge are located at eye level on the container
for ease of viewing.
Caution! Tanks are not designed to be
moved with liquid in the inner
container. Tanks must be drained
completely before being lifted or
moved.
Caution! To prevent possible tip over,
do not leave tank standing
upright unless it is secured to
its foundation (bolted down).
Transporting and erection of
the tank should be performed
in accordance with rigging
instructions available from Chart.
Failure to comply with these
instructions may result in serious
damage to the tank.
Introduction

6
Introduction Product Manual - ChillZilla®Liquid Supply System LN2
Operator Qualications
Chart tanks are designed for safe and simple operation. The
operator is expected to be knowledgable of the nature of the
gas(es) with which he is working, as well as all applicable
safety requirements. This manual contains several chapters
dealing with Installation, Operations, and Maintenance
procedures. To fully understand these procedures, we
recommend the operator rst become familiar with controls
and indicators.

7
Product Manual - ChillZilla®Liquid Supply System LN2
General
This section explains how to unload the tank from the truck
or shipping container. It provides the owner with a list of
inspections that should be done before receiving the tank and
discusses general considerations for the tank’s nal location.
Site Considerations
Site selection (Per NFPA Bulletins and the CGA)
Prime considerations in choosing a site for the tank are soil
stability of the location, accessibility for servicing, and
proximity to the gas consumption point. Firm soil conditions
are desirable to protect against settling of the facility and
possible station damage. The foundation site must also be
located such that drainage away from the foundation is
ensured. Since the tank will be lled from a truck, it must be
readily accessible. Generally, a location adjacent to a parking
lot is most suitable.
The site selected should be such that the ChillZilla LN2
Supply System and associated equipment (if any) will not
be beneath or exposed by the failure of electric power lines,
ammable or combustible liquid lines, or ammable gas
lines. Should the unit be located indoors, the building must
be of noncombustible construction, adequately vented, and
be used exclusively for gas storage.
Site Preparation
Site preparation considerations include selecting the proper
foundation. However, before the foundation is laid the
site must be cleared of all organic material and topsoil. In
addition, the site soil bearing must be capable of 2000 psf
minimum. If this cannot be substantiated, a local professional
engineer should be consulted. The construction of a rm
base or foundation for the ChillZilla LN2 Supply System
is of prime importance. Most often, this will be concrete;
however, steel frames may also be used. In either case, a rm
bed consisting of gravel or crushed stone is required for the
foundation to rest on.
Concrete Foundations
Concrete pads are the most common foundations on which
ChillZilla LN2 Supply Systems are installed. They provide
a highly stable, permanent location for the unit, as well as
any on-site support equipment required (reserve cylinders,
additional vaporizers, etc.). All exposed parts should be
coated with an aluminum paint or equivalent. Skirted pads
need only be used if required by the local codes. If used,
install as required, but below local frost line.
Site Protection
In many situations, the tank is vulnerable to damage. This
may be due to tampering by unauthorized personnel, other
equipment moving in the area, or a combination of these
situations. Depending on the exposure, protection should be
provided by either a fence or pylons or both.
Other Site Considerations
Installation of a Chart tank should be supervised by
personnel familiar with their construction and intended use.
Following installation, all eld erected piping and tank
connection points should be tested at maximum operating
pressure to check for leaks.
Note: Ifduringsitepreparationanyquestions
ariseconcerningthefoundation,location,
etc.,itisadvisedthatyourlocalChart
serviceproviderorthefactorybe
consulted.
Each tank system installed on consumer premises should
be inspected annually. Weeds and long dry grasses must be
cut back within 15 ft/457 cm of any bulk oxygen storage
container
Installation

8
Installation Product Manual - ChillZilla®Liquid Supply System LN2
Handling Instructions
Installation of a tank at the storage site requires the use of a
lift crane.
Note: Ifthepadisnotcompletedwhenthetank
arrives,arrangementsshouldbemade
tohavetheunittakenfromthetruckand
storedinaprotectedarea.Storethetankin
ahorizontalpositionuntilitcanbeplaced
onaproperlyconstructedpad.
Figures 1 & 2 depict two methods of handling vessels during
installation. The handling method pictures in Figure 1 uses
two cranes to place the tank. The two-crane method is safer,
and thus the more preferred method of installing the vessel.
The alternate method of installation uses a single crane. This
method is pictures in Figure 2.
Figure 1 - Two-Crane Installation Method
Figure 2 - Single-Crane Installation Method
Unloading
1. Connect to the lifting lug on the top of the tank and on
the leg as shown in the rigging illustration.
2. Disconnect any chains, straps, or shipping braces that
may have been used to hold the tank to the truck bed.
3. Lift the tank only a few inches and check to make sure
there are no additional connections between the tank
and the trailer.
4. Remove the tank from the trailer and place it on the
pad or designated hold area while the pad is being
constructed.
Inspection
A receiving inspection is one of the most important
operations in the life of the tank, and should be done
thoroughly and conscientiously. Any indications of damage
should be immediately reported to the freight company and
Chart.
Receiving Checkpoints
1. Check braces, skids, wooden chocks, and other supports
shipped with the tank. Damage or deformation would
indicate the possibility of mishandling during shipment.
2. Examine welded or brazed joints on plumbing for
cracks or deformation. Areas to check in particular are
near valves and ttings.
3. Check the area where pipes exit from the tank for cracks
or breaks.
4. Check the relief valves and burst discs for dirt damage.
5. Check the pressure in the tank with the pressure gauge
(G-1). If pressure is “0” then extra precautions against
contamination and impurities must be taken.
6. Examine the 5g impactograph. If it has sprung, damage
may have occurred during shipment. Notify your
company’s tank specialist and/or Chart.
7. Check the tank vacuum level using the vacuum test
procedure.
Vacuum Test Procedure
Caution! Unauthorized changing of the
vacuum probe (VR-1) will void
vessel warranty.
1. The standard Chart probe is the Hastings DV-6R probe.
Select a compatible instrument to match this type of
probe.
2. Remove the rubber cap on the probe outlet to expose
the contacts. Note that the probe housing need not be
removed for this step.
3. Plug the instrument to the probe and calibrate the
instrument.
4. Open the vacuum probe isolation valve. Wait for 5
minutes and take and record a vacuum reading.

9
InstallationProduct Manual - ChillZilla®Liquid Supply System LN2
Note: Thevalvehandleprotrudesthroughthe
protectivehousingandcanbeturned
withoutopeningthehousing.
5. Close the isolation valve and take a second reading.
Monitor the rate of vacuum pressure rise in the vacuum
probe with the isolation valve closed. If the vacuum
continues to rise at a constant rate, it is possible that the
probe assembly is leaking. Consult the factory.
6. Verify that the isolation valve is closed.
7. Replace rubber cap on probe.
8. Compare the vacuum reading obtained now to reading
taken prior to shipping.
Vessel Tie Down Guidelines
The following are guidelines for securing a Chart tank for
shipping.
• Lay the tank on corrugated cardboard or plastic to prevent
damage to the nish.
• The tank should be orientated with the plumbed head
pointing backward. The plumbing is less likely to be
damaged during shipping in this orientation.
• Place supports or saddles on the head-shell seam. Never
in the middle of the head.
• Using appropriately sized chain, tie the tank to the bed of
the trailer at the lifting lugs on the top of the tank and at
any lug clearly marked “Tie Down Only”.
• Do not attach chains to holes on the leg pad.
• A minimum of six chains should be used to secure any
tank. The chains should be situated such that the tank
cannot slide or roll in any direction.
• Straps can cause damage to the tank nish. Avoid using
straps to secure the tank.
• Under no circumstances should a chain, strap, or other tie
down equipment that may damage the tank nish come
in direct contact with the outer shell of the tank. Use
corrugated cardboard or a similar material to protect the
tank in areas where contact may occur.
• All pressure relief devices including rupture disks and
relief valves must be adequately protected from road grit
using pipe caps or duct tape.
• Protruding assemblies may require separate bracing.

11
Product Manual - ChillZilla®Liquid Supply System LN2
Filling Procedures
This section provides the purging, initial ll, and relling
procedures for the ChillZilla LN2 Liquid Supply System.
Before performing any of the procedures contained in this
section, become familiar with the location and function
of the controls and indicators shown in the Specications
section of this manual.
Initial Fill Precautions
The initial ll is usually performed on a warm tank, one
that has not been in use for an extended period. The warm
container must be purged to ensure product purity.
When preparing the tank for lling or when changing
service, the following items should be considered:
• The tank should be inspected for possible damage or
unsuitability for intended use. If damage is detected (e.g.
serious dents, loose ttings, etc.) remove the unit from
service and perform repairs as soon as possible.
• The tank may be lled by pumping or pressure transfer. If
tank pressure is at least 50 psi (3.5 kg/cm2) less than the
maximum allowable pressure of the supply unit, liquid
may be transferred by pressure transfer. If the normal
working pressure of the tank is equal to or greater than
the maximum allowable pressure of the supply unit,
liquid must be pumped into the tank.
• To remove the moisture or foreign matter from the tank or
tank lines, the tank must be purged. Use a small amount
of new product for purging when changing service, and a
small amount of the same product if the purge is to ensure
purity or remove contaminants.
• When changing service, the approved CGA (or other
keyed) tting will have to be installed for connection
FC-1.
Purging Procedure
The maximum purge pressure should be equal to 50% of the
maximum operating pressure of the tank or 30 psi (2.1 kg/
cm2), whichever is less. The maximum purge pressure should
be determined before starting the purge operation. To prevent
drawing atmospheric contaminants back into the tank, a
positive pressure of at least 5 psi (0.4 kg/cm2) must always
be maintained in the tank.
Attach the source of liquid purge to the ll connection (FC-
1).
Operations
The following procedure should be used to purge the system:
1. Close all valves except the liquid level gauge vapor
phase and liquid phase shutoff valves (HCV-8 & HCV-
10).
2. Open hose drain valve (HCV-7), and allow source to
vent through hose. Vent until slight frosting appears on
hose. Close hose drain valve (HCV-7).
3. Open the bottom ll valve (HCV-1) enough to allow
liquid to ow slowly into the tank through the bottom
ll line. The gradual ow enables the liquid to vaporize
in the line and to slowly build up pressure in the inner
tank.
4. Shut off the liquid supply source when the pressure
in the tank reaches the maximum purge pressure as
indicated on the tank pressure gauge (PI-1).
5. Open the ll line drain valve (HCV-7) slowly to avoid
splashing of the liquid. Drain all liquid from the tank.
The appearance of gas (vapor) at the drain indicates that
all liquid has been drained.
6. Close drain valve (HCV-7) and bottom ll valve (HCV-
1).
7. Open the liquid level gauge equalization valve (HCV-
9) to prevent damage to the gauge before closing the
liquid level gauge vapor phase and liquid phase shut-off
valves. When all liquid is drained, close the liquid level
gauge vapor phase and liquid phase shut-off valves
(HCV-8 & HCV-10).
8. Loosen the unions on either side of the liquid level
gauge (LI-1). Both the upper and lower liquid level
gauge valves (HCV-8 & HCV-10) should be opened
wide and the gas streams visually checked for signs
of moisture. Provided no moisture is observed after
blowing the lines for approximately two minutes, both
valves should be closed. If moisture is observed in the
gas stream, the gas should be discharged until it is clear
of all moisture.
9. A careful check for moisture in the phase lines will
ensure trouble free operation of the liquid level gauge.
Due to their small diameter, gauge lines are easily
plugged by ice.
10. Open the vapor vent valve (HCV-12) and full trycock
valve (HCV-4). The top ll valve (HCV-2) will have to
be vented by opening hose drain valve (HCV-7).
11. Repeat purge procedure steps 2 through 6 and 10 at
least three times to ensure product purity.

12
Operations Product Manual - ChillZilla®Liquid Supply System LN2
12. Reconnect the liquid level gauge (LI-1), open the liquid
level control valves (HCV-8 & HCV-10), then close the
by-pass valve (HCV-9).
13. After purging the tank but before lling, verify that the
following valves are open or closed as indicated.
Valve Position
Bottom Fill Valve (HCV-1) Closed
Top Fill Valve (HCV-2) Closed
Vapor Vent Valve (HCV-12) Closed
Full Trycock Valve (HCV-4) Closed
Liquid Level Gauge Equalizing Valve (HCV-9) Closed
Liquid Level Gauge Liquid Phase Valve (HCV-10) Open
Liquid Level Gauge Vapor Phase Valve (HCV-8) Open
Initial (Warm Tank) Filling Procedure
The following steps are used to ll the storage tank for the
rst time:
1. Purge tank to assure product purity.
2. Verify that the content of the supply unit is the proper
product to be transferred.
3. Verify that all valves except liquid phase-high (HCV-
10) and gas phase-low (HCV-8) are closed.
4. Connect the supply unit transfer hose to tank ll
connection (FC-1).
5. Cool down the transfer hose prior to lling by opening
hose drain valve (HCV-7) and venting the supply unit
through the hose for approximately three minutes. Close
drain valve (HCV-7).
6. If a Pressure Transfer is to be made follow step 7. If a
Pump Transfer is to be made follow step 8.
7. Open bottom ll valve (HCV-1) slowly. For Pressure
Transfer, allow pressure to build up in the liquid supply
unit until it is at least 50 psi (3.5 kg/cm2) higher than
station pressure. Open the discharge valve on the supply
unit to begin ow.
8. For Pump Transfer, make the required connections
to the pump. Open the supply unit transport discharge
valve slowly. Maintain pump discharge pressure from
50 psi (3.5 kg/cm2) to 100 psi (7.0 kg/cm2) higher than
the tank pressure. Fill slowly.
9. Monitor pressure in tank during lling. If pressure rises
above supply pressure, or near relief valve pressure,
the tank may have to be vented through the vapor vent
valve (HCV-12), should pressure continue to rise, the
ll may have to be interrupted to allow pressure to drop.
10. Monitor liquid level contents gauge (LI-1). When
the gauge indicates approximately 3/4 full, open full
trycock valve (HCV-4).
11. When liquid spurts from full trycock valve (HCV-4),
immediately stop ll at the supply source and close full
trycock valve (HCV-4).
12. Close bottom ll valve (HCV-1).
13. Drain residual liquid in the ll hose via drain valve
(HCV-7).
14. Relieve ll hose pressure by loosening the hose at
ll connection, and then disconnect the hose. It is
recommended that the ll hose be allowed to defrost to
prevent moisture from being drawn inside the hose.
Tank Relling Procedure
Filling a cryogenic tank through the bottom tends to
raise pressure in the tank as gases in the vapor space are
compressed. Filling through the top tends to lower pressure
as gases in head space are cooled down and re-liqueed.
The following steps should be taken to rell the storage tank:
1. Verify that the content of the supply unit is the proper
product to be transferred.
2. Verify that the bottom and top ll valves are closed
(HCV-1 & HCV-2).
3. Verify minimum required operating pressure in the tank
and current tank pressure.
4. Verify that all other valves are in normal operating
positions.
5. Connect the supply unit transfer hose to tank ll
connection (FC-1).
6. Cool and purge down the transfer hoses prior to lling
by opening hose drain valve (HCV-7) and the supply
unit discharge valve for approximately three minutes or
until hose begins to frost. Close drain valve (HCV-7).
7. Open top ll valve (HCV-2) completely.
8. If a Pressure Transfer is to be made follow step 9. If a
Pump Transfer is to be made follow step 10.
9. For a Pressure Transfer, allow pressure to build up in
the liquid supply unit until it is at least 50 psi (3.5 kg/
cm2) higher than station pressure. Open the discharge
valve on the supply unit to begin ow.

13
OperationsProduct Manual - ChillZilla®Liquid Supply System LN2
10. For a Pump Transfer, make the required connections
to the pump. Open the supply unit transport discharge
valve slowly. Close pump circulating valve slowly, so
as not to lose pump prime. Maintain pump discharge
pressure from 50 psi (3.5 kg/cm2) to 100 psi (7.0 kg/
cm2) higher than tank pressure.
11. Monitor pressure in tank as indicated. Try to maintain
initially noted tank pressure. If pressure begins to drop
too much, open the bottom ll valve (HCV-1) and
throttle top ll valve (HCV-2) until pressure stabilizes.
12. Monitor liquid level contents gauge (LI-1). When the
gauge indicates approximately 3/4 full, open the full
trycock valve (HCV-4).
13. When liquid spurts from the full trycock valve (HCV-4),
stop ll at the supply source and close the full trycock
valve (HCV-4).
14. Close tank ll valves (HCV-1 & HCV-2).
15. Drain residual liquid in the ll hose via drain valve
(HCV-7).
16. Relieve ll hose pressure by loosening the hose at the
ll connection, and then disconnect the hose.
Withdrawal Procedures
This section provides general guidelines for product delivery
in liquid form. Before performing any of the procedures
contained in this section, become familiar with the location
and function of the controls and indicators.
Pressure Building
The system is designed for continuous operation. As the
liquid level drops, the pressure in the tank must increase to
keep the product in a liquid state and maintain a constant
ow rate. When the pressure drops below a specic value
which is calculated by the PLC, the PB inlet electrical
valve (EOV-1) will open. This valve allows product to ow
through a vaporizing coil with ns (PBC-1). A manifold is
used to ensure even distribution. The ns add heat to the
liquid and it boils into a gas. This gas is then piped back
into the top of the storage tank to increase the pressure.
This process continues until the pressure reaches a high
enough level, again calculated by the PLC. The PLC will
automatically close the PB inlet electrical valve (EOV-
1). Once the valve is closed the pressure may rise a small
amount as the remaining liquid in the PB coil boils. The
Dynamic Pressure Builder chart shows the general change
in tank pressure as the liquid level drops for a 15,000 gallon
tank.
The ChillZilla system does not come equipped with a
mechanical pressure regulator. The pressure in the tank is
completely controlled by the PLC. When the tank is full, the
pressure will be lower than when the tank is almost empty.
The purpose of this operation is to maintain a constant outlet
pressure at the bottom of the tank.
The standard tank comes with a pressure building coil
attached to the side of the tank. If the pressure builder is
operating often ice may start to build up on the ns. The ice
lowers the effectiveness of the ns so it must be removed.
The only way to safely remove the ice is by allowing the
ns to warm above ambient freezing temperatures. For
continuous operation where the system will not be shut
down, and the ns are allowed to warm, an auxiliary
vaporizer may be installed.
Liquid Withdrawal
It is recommended that the liquid withdrawal line be
connected to Chart vacuum jacketed piping. The piping will
efciently bring the liquid to the application with the least
amount of pressure rise.
Liquid product should be drawn from the tank using the VJ
outlet (C-7). It is not recommended that the connection on
the bottom ll line (C-3) be used, as this will result in higher
losses than required.
Normal liquid withdrawal operations are performed at lower
pressures (approx. 50 psig or less) (3.5 kg/cm2) to reduce
ash-off losses and splashing. Transfer of liquid at higher
pressure can lead to excessive splashing of the cryogenic
liquid which could result in substantial product losses. An
attached pressure building coil is used to decrease losses
and maintain supply pressure. All personnel should be fully
instructed in the cautions associated with handling cryogenic
uids and the proper clothing and protective gear to be used.

14
Operations Product Manual - ChillZilla®Liquid Supply System LN2
Controls
Chart cryogenic container operating procedures specify that
the operator shall be familiar with all controls and indicators
as well as safety considerations. The following controls and
indicators should be located and identied on the vessel prior
to lling or putting the vessel into operation.
Control Panel
The control panel includes and Allen Bradley PLC and Exor
HMI.
The photo below shows the control panel and explains the
basic operations of all keys.
Quick Startup
This section will go through the process to program the
ChillZilla system for the rst time before operation begins.
The system has default parameters that are put in place so the
system can operate as soon as it is turned on the rst time.
These values may not represent your plant setup and may
need to be changed. The following steps will go through how
to change these parameters so the system can be run in the
most efcient way.
Power
The two breakers at the top of the inside of the control panel
located under the tank are used to turn the system on and off.
The switches below are currently in the ON position.
• Up = ON
• Down = OFF
Control Panel Screens
Figure 1 - Unit in Independent (Standalone) Mode
• Partner Mode Selection is the button used to select which
mode of operation unit should be in.
Figure 2 - Unit in Master Mode
• Able to control its valves and the valves of a slave unit
• Actual Mode indicates that communications are good and
is actually in Master Mode
• Master Active indicates it's the next unit to PB
Figure 3 - Unit in Master Mode
• Able to control its valves and the valves of a slave unit
• Actual Mode indicates that communications are good and
is actually in Master Mode
• Slave Active indicates the other unit is next unit to PB