CHART TRIFECTA 2K User manual

Trifecta 2K
Service Manual
OPERATING INSTRUCTIONS
TRIFECTA 2K
TRIFECTA Gas Supply System - Rev D

Trifecta 2K

Trifecta 2K
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
SYSTEM SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
FLOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
ELECTRICAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Safety Bulletin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
PLACEMENT OF SKID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
PLUMBING TO BULK TANK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
PLUMBING TO VAPORIZER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
BULK TANK PRESSURE TRANSMITTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Plumbing to Bulk Tank Pressure Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
ELECTRICAL POWER SUPPLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
COMMISSIONING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Control Panel Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
AUTOMATIC MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
PLC CONTROLLER INTERFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Changing Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Typical Operating Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Fill Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
MANUAL MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
SOLENOID VALVES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
PRESSURE/DIFFERENTIAL PRESSURE TRANSMITTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
LASER-CYL PRESSURE SAFETY DEVICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
LINE RELIEF VALVES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
FUSES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
RESISTOR ELEMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
RELAYS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
SENSOR ERROR CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Sensor Error Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
PRODUCT DELIVERY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
CHECKING TRANSMITTER OUTPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Pressure Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Differential Pressure Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
CHECKING RESISTOR VALUES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
RECOMMENDED SPARE PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
TABLE OF CONTENTS

Trifecta 2K
TABLE OF FIGURES
LIST OF TABLES
FIGURE 1 - System Flow Curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
FIGURE 2 - Plumbing Connection Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
FIGURE 3 - Field Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
FIGURE 4 - System Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
FIGURE 5 - Valve Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
FIGURE 6 - Fuse Location Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
FIGURE 7 - Relay Identification Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
FIGURE 8 - Input Channel Location on the PLC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
TABLE 1 - Configurable Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
TABLE 2 - Typical TRIFECTA Fill Cycle Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
TABLE 3 - Valve Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
TABLE 4 - Solenoid Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
TABLE 5 - Solenoid Valve Repair Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
TABLE 6 - Transmitters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
TABLE 7 - Pressure Safety Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
TABLE 8 - Line Relief Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
TABLE 9 - Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
TABLE 10 - Resistor Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
TABLE 11 - Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
TABLE 12 - Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
TABLE 13 - PLC Input Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
TABLE 14 - Pressure Transmitter Formula Quick View . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
TABLE 15 - Differential Pressure Transmitter Formula Quick View . . . . . . . . . . . . . . . . . . .24
TABLE 16 - Resistor Removal Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
TABLE 17 - Recommended Spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
FAILURE CHECK LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
DRAWING C- P/N 10928849 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
TABLE OF CONTENTS (con’t)

Trifecta 2K
GENERAL
Congratulations, you now own MVE’s TRIFECTA high-pressure gas supply system. This
system is designed to utilize a standard, low pressure cryogenic bulk tank to produce the high
pressure and flow rate gas that is being demanded by today’s laser systems. The system is
designed to provide a continuous flow of high-pressure gas with no interaction from the user.
The user simply needs to maintain liquid in the bulk tank, and TRIFECTA’s controls system will
manage the rest.
SYSTEM SPECIFICATIONS
DIMENSIONS
Height: 79 in. (2,007 mm) Length: 65 in. (1,651 mm)
Width: 60 in. (1,524 mm) Weight: 1,966 lbs. (892 Kg)
FLOW
The TRIFECTA gas supply system is capable of supplying a continuous nitrogen gas-flow
rate at higher pressures than standard cryogenic bulk storage tanks. If the customer can tolerate
lower delivery pressures, the TRIFECTA system will deliver greater flow rates. If the customer
can tolerate lower flow rates, the TRIFECTA system will deliver at higher pressures. The
following curve is an approximation of the flow rate and delivery pressure relationship:
1
ELECTRICAL
The system has an electrical requirement of 5.4A full load, and 11.4 peak load. The
electrical supply voltage should be 110 Vac.
TRIFECTA Test Flow Curve
200
250
300
350
400
450
2000 2200 2400 2600 2800 3000 3200
Continuous Flow Rate (SCFH Nitrogen)
SustainedPressure(PSIG)
Approximate Curve Fit
Figure 1 - System Flow Curve

Trifecta 2K 2
SAFETY
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 shutdown and allowed to warm-up. If maintenance is to be done on the system,
such as changing valve seats, it is extremely important that the pressure be relieved from the
system through the vent valves. The five transmitters can monitor the system pressures and
liquid levels. When doing maintenance on the system, it is recommended that the manual
isolation valves to the bulk tank be closed.
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.
In an oxygen-enriched atmosphere, flammable items burn vigorously and could
explode. Excess accumulation of oxygen creates an oxygen-enriched atmosphere (defined by
the Compressed Gas Association as an oxygen concentration above 23%). Certain items
considered non-combustible in air might burn rapidly in such an environment. Keep all organic
materials and other flammable substances away from possible contact with oxygen; particularly
oil, grease, kerosene, cloth, wood, paint, tar, coal, dust, and dirt which may contain oil or
grease. Do not permit smoking or open flame in any area where oxygen is stored, handled, or
used. Failure to comply with this warning may result in serious personal injury.
Nitrogen and argon vapors in air may dilute the concentration of oxygen necessary to
support or sustain life. Exposure to such an oxygen deficient atmosphere can lead to
unconsciousness and serious injury, including death.
Before removing any parts or loosening fittings, empty the cryogenic container of
liquid contents and release any vapor pressure in a safe manner. External valves and fittings
can become extremely cold and may cause painful burns to personnel unless properly protected.
Personnel must wear protective gloves and eye protection whenever removing parts or
loosening fittings. Failure to do so may result in personal injury due to the extreme cold and
pressure in the tank.
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. Cuffless trousers should be worn over the
shoes to shed spilled liquid.

Trifecta 2K
If clothing should be splashed with liquid oxygen it will become highly flammable and
easily ignited while concentrated oxygen remains. Such clothing must be aired out immediately,
removing the clothing if possible, and should not be considered safe for at least 30 minutes.
Use only replacement parts that are compatible with liquid oxygen and have been
cleaned for oxygen use. Do not use regulators, fittings, hoses, etc., which have been previously
used in a compressed air environment. Similarly, do not use oxygen equipment for compressed
air. Failure to comply with these instructions may result in serious damage to the container.
Before locating oxygen equipment, become familiar with the National Fire Protection
Association (NFPA) standard No. 50, “Bulk Oxygen Systems at Customer Sites”, and with
all local safety codes. The NFPA standard covers general principles recommended for
installing bulk oxygen systems on industrial and institutional consumer premises.
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 MVE. 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., (CGA). Additional information on nitrogen and argon and
liquid cylinders is available in CGA Pamphlet P-9. Write to: Compressed Gas Association, Inc.,
1235 Jefferson Davis Highway, Arlington, VA 22202.
FROM CGA SAFETY BULLETIN:
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 that 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 refilled unless the unit has been repaired and re-certified.
Incidents, which require that such practices, be followed, include highway accidents,
immersion in water, exposure to extreme heat or fire, and exposure to most adverse weather
conditions (earthquakes, 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
circumstance 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.
3

4Trifecta 2K
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 MVE for repair
and re-certification.
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
deficient atmospheres, oxygen-enriched atmospheres, and exposure to inert gases.
OXYGEN DEFICIENT ATMOSPHERES
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 or 16%, the flame 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. 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 immediate change of environment, or
through the gradual depletion of oxygen.
Most individuals working in or around oxygen deficient 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 an unconscious partner unless equipped with a portable air supply.
Best protection is obtainable by equipping all individuals with a portable supply of respirable
air. Lifelines are acceptable only if the area is essentially free of obstructions and individuals
can assist one another without constraint.
If oxygen deficient atmosphere is suspected or known to exist:
1. Use the “buddy system”, and 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 air line
breathing equipment.
OXYGEN ENRICHED ATMOSPHERES
An oxygen-enriched atmosphere occurs whenever the normal oxygen content of air is
allowed to rise above 23%. While oxygen is non-flammable, ignition of combustible materials
can occur more readily in an oxygen-rich atmosphere than in air; and combustion proceeds at a
faster rate although no more total heat is released.

Trifecta 2K
It is important to locate an oxygen system in a well-ventilated location since oxygen-rich
atmospheres may collect temporarily in confined areas during the functioning of a safety relief
device or leakage from the system.
Oxygen system components, including but not limited to, containers, valves, valve seats,
lubricants, fittings, gaskets and interconnecting equipment including hoses, shall have adequate
compatibility with oxygen under the conditions of temperature and pressure to which the
components may be exposed in the containment and use of oxygen. Easily ignitable materials
shall be avoided unless they are parts of equipment or systems that are approved, listed, or
proved suitable by tests or by past experience.
Compatibility involves both combustibility and ease of ignition. Materials that burn in air
may burn violently in pure oxygen at normal pressure, and explosively in pressurized oxygen.
In addition, many materials that do not burn in air may do so in pure oxygen, particularly when
under pressure. Metals for containers and piping must be carefully selected, depending on
service conditions. The various steels are acceptable for many applications, but some service
conditions may call for other materials (usually copper or its alloys) because of their greater
resistance to ignition and lower rate of combustion.
Similarly, materials that can be ignited in air have lower ignition energies in oxygen. Many
such materials may be ignited by friction at a valve seat or stem packing, or by adiabatic
compression produced when oxygen at high pressure is rapidly introduced into a system
initially at low pressure.
NITROGEN AND ARGON
Nitrogen and argon (inert gases) are simple asphyxiants. Neither gas will support or sustain
life and can produce immediate hazardous conditions through the displacement of oxygen.
Under high pressure these gases may produce narcosis even though an adequate oxygen supply,
sufficient for life, is present.
Nitrogen and argon vapors in air dilute the concentration of oxygen necessary to support or
sustain life. Inhalation of high concentrations of these gases 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 or
argon 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 a worker’s skin or eyes, the affected tissues should be promptly flooded or soaked with
tepid water (105-115oF; 41-46oC). DO NOT USE HOT WATER. Cryogenic burns, which result
in blistering or deeper tissue freezing, should be examined promptly by a physician.
5

Trifecta 2K 6
Chart customer stations are safely designed with the following features:
1. A vacuum maintenance system specifically designed to provide long life and all possible
safety provisions.
2. Safety relief devices to protect the pressure vessel and vacuum casing, sized and
selected in accordance with ASME standards to include a dual relief valve and rupture
disc system to protect the pressure vessel, and a reverse buckling rupture disc or lift
plate to protect the vacuum casing from over-pressure. While Chart equipment is
designed and built to the most rigid standards, no piece of mechanical equipment can
ever be 100% foolproof.
INSTALLATION
PLACEMENT OF SKID
The TRIFECTA skid has three lifting lugs on the top of the skid. These lifting lugs allow for
placement of the skid by overhead crane. If an overhead crane is not available, the skid has fork
truck access in the front.
The TRIFECTA skid should be placed on the concrete pad, near the bulk storage tank. It is
preferred to put the skid as close to the bulk tank as possible without interfering with any other
equipment or requirements of the tank. The system requires a transfer of liquid and gas between
the bulk storage tank and the TRIFECTA skid. This process will become more efficient as the
skid moves closer to the bulk tank.
The skid should be placed such that there is easy access to the front of the skid so that one
can easily check the Laser-Cyl’s gauges or the control box at any time. Consideration should
also be given to where the optional external vaporizer will be placed on the pad.
PLUMBING TO BULK TANK
The TRIFECTA skid needs to have a line plumbed to the bulk storage tank. This line will
serve two functions. The first function is to allow the transfer of liquid from the bulk tank to the
Laser-Cyl’s in the filling process. The second function is to allow the initial venting of gas from
the Laser-Cyl to the bulk tank. This gas is vented into the liquid of the bulk tank to minimize
pressure rise in the bulk tank. This one line should be plumbed to an Auxiliary liquid line of the
bulk tank. The recommended line size is no smaller than one inch. When looking at the back of
the system skid, there are two connection points available for plumbing hook-up. The connection
point on the left, labeled C-1 on FIGURE 2, is the one that should be plumbed to the bulk tank.
The line should be insulated for two reasons. The first reason is that an insulated line will
allow more efficient liquid transfers and fills. The second reason is that when the Laser-Cyl
vents gas to the bulk tank, it is undesirable for the venting gas to pick-up any additional heat on
its way to the bulk tank. If the vent gas picks up additional heat, the bulk tank will experience
greater pressure rise.
To prevent the transfer of foreign material that may obstruct the operation of the solenoid
valves and check valves, it is recommended that a strainer be included in the piping from the
bulk tank to the Trifecta. A 100-mesh screen is acceptable. The minimum pipe size should be 3/4
inch (1.91 cm), to minimize pressure drop.