Operating & Maintenance Manual
www.amico.com
Automatic Cryogenic
Liquid Solenoid Manifold
NFPA v1.0
Contents
User Responsibility 4
Introduction 5
Features
Description of the Manifold 8
Shipment Details
The Manifold Enclosure
Manifold Display Board
Economizer Circuit
Liquid Tanks
Gas Flow Through Manifold
Reserve (High Pressure) Bank
Description of Parts 11
Main Line Source Valve
Solenoid Valve
Pressure Transducers
Check Valve
Line Regulator Ball Valve
Dual Line Regulator
Pressure Relief Valve
Front Panel Indicators
Power Supply
Control Board
Gas Service Identication
Header Bar Connections
Operating Alarm Systems
Parts Layout
Display Functions 12
Installation 13
Wall Mounting Instructions 14 - 16
Tank Installation Instructions 17
2 Amico Pipeline
Testing for Leaks 18
Initial Power-Up 19 - 20
Line Regulator Pressure Adjustment 21
Line Regulator Replacement 21
Control Board Replacement 22
Solenoid Replacement 22
Tank Changing Procedures 23
Ordering Information 24
Manifold Cabinet
Header-Bar Assembly
Control Cabinet Part List 25
Appendix A Manifold Internal Layout 26
Appendix B Piping Schematic Diagram 27
Appendix C Electrical Wiring Diagram 28
Appendix D Control Cabinet Wiring Diagram 29
Appendix E Liquid Setup with Header Bars 30
Appendix F Liquid Manifold with High Pressure Reserve 31
www.amico.com 3
User Responsibility
Microprocessor Digital Manifold
USER RESPONSIBILITY
The information contained in this Installation and Maintenance Manual, pertains only to the ALERT-2
microprocessor based digital manifold. This product will perform in conformity with the descriptions
contained in this manual when assembled, operated, maintained and serviced in accordance with the
installation instructions provided.
The manifold must be checked periodically. Parts that are broken, missing, worn, distorted or
contaminated, must be replaced immediately. Should such repair or replacement become necessary,
please contact Amico Corporation or their distributors.
Installing CO2 and N2O manifolds outdoors. Please refer to NFPA Code: 5.1.3.3.1.8 Central
supply systems for nitrous oxide and carbon dioxide shall be prevented from reaching
temperatures lower than the recommendations of the central supply system’s manufacturer,
but shall never be lower than -7°C (20°F) or greater than 54°C (130°F).
All Manifolds should not be repaired or altered without prior written approval by Amico
Corporation or it’s distributors. Failure to comply will void all warranty on the manifold.
Statements in this manual preceded by the words WARNING, CAUTION, DANGER and NOTE are of
special significance. Please read these sections carefully.
WARNING: denotes steps which can prevent injury.
Microprocessor Digital Manifold
USER RESPONSIBILITY
The information contained in this Installation and Maintenance Manual, pertains only to the ALERT-2
microprocessor based digital manifold. This product will perform in conformity with the descriptions
contained in this manual when assembled, operated, maintained and serviced in accordance with the
installation instructions provided.
The manifold must be checked periodically. Parts that are broken, missing, worn, distorted or
contaminated, must be replaced immediately. Should such repair or replacement become necessary,
please contact Amico Corporation or their distributors.
Installing CO2 and N2O manifolds outdoors. Please refer to NFPA Code: 5.1.3.3.1.8 Central
supply systems for nitrous oxide and carbon dioxide shall be prevented from reaching
temperatures lower than the recommendations of the central supply system’s manufacturer,
but shall never be lower than -7°C (20°F) or greater than 54°C (130°F).
All Manifolds should not be repaired or altered without prior written approval by Amico
Corporation or it’s distributors. Failure to comply will void all warranty on the manifold.
Statements in this manual preceded by the words WARNING, CAUTION, DANGER and NOTE are of
special significance. Please read these sections carefully.
WARNING: denotes steps which can prevent injury.
Microprocessor Digital Manifold
USER RESPONSIBILITY
The information contained in this Installation and Maintenance Manual, pertains only to the ALERT-2
microprocessor based digital manifold. This product will perform in conformity with the descriptions
contained in this manual when assembled, operated, maintained and serviced in accordance with the
installation instructions provided.
The manifold must be checked periodically. Parts that are broken, missing, worn, distorted or
contaminated, must be replaced immediately. Should such repair or replacement become necessary,
please contact Amico Corporation or their distributors.
Installing CO2 and N2O manifolds outdoors. Please refer to NFPA Code: 5.1.3.3.1.8 Central
supply systems for nitrous oxide and carbon dioxide shall be prevented from reaching
temperatures lower than the recommendations of the central supply system’s manufacturer,
but shall never be lower than -7°C (20°F) or greater than 54°C (130°F).
All Manifolds should not be repaired or altered without prior written approval by Amico
Corporation or it’s distributors. Failure to comply will void all warranty on the manifold.
Statements in this manual preceded by the words WARNING, CAUTION, DANGER and NOTE are of
special significance. Please read these sections carefully.
WARNING: denotes steps which can prevent injury.
CAUTION: denotes steps which can prevent damage to equipment.
DANGER: denotes steps which can prevent electrical shock to equipment or to
prevent serious injury and/or death.
The information contained in this Installation and Maintenance Manual pertains only to the Amico Automatic Manifold.
This product will perform in conformity with the descriptions contained in this manual when assembled, operated,
maintained and serviced in accordance with the installation instructions provided.
The manifold MUST be checked periodically. Parts that are broken, missing, worn, distorted or contaminated must be
replaced immediately. Should such repair or replacement become necessary, please contact Amico Corporation or
their distributors.
All Manifolds should not be repaired or altered without prior written approval by Amico Corporation or its
distributors. Failure to comply will void all warranty on the manifold.
Statements in this manual preceded by the words WARNING, CAUTION, DANGER and NOTE are of special signicance.
Please read these sections carefully.
WARNING: denotes steps which can prevent injury.
CAUTION: denotes steps which can prevent damage to equipment.
DANGER: denotes steps which can prevent electrical shock to equipment or to
prevent serious injury and/or death.
4 Amico Pipeline
Introduction
The Amico Automatic Cryogenic Liquid Solenoid Manifold is designed to provide a reliable, uninterrupted supply of
gas to a hospital or other medical facility. The manifold accommodates multiple cryogenic containers divided into
two equal banks. One bank is designated as a “Primary” source of gas while the other bank stands in reserve as a
“Secondary” source.
A display of LED’s on the front of the manifold indicates the status of the gas supply. Each bank has a green (IN
USE), yellow (READY) and red (EMPTY) LED. When the primary bank of cylinders are depleted, the manifold will
automatically switch to the secondary bank of cylinders without interruption of gas ow to the facility. The red
LED will illuminate when a bank is depleted and two normally closed dry contacts for the reserve In-Use alarm
will open. One or both sets of contacts may be wired to an external alarm, remote buzzer and/or a building
management system.
When the empty Liquid tanks / Dewar’s are replaced with full ones, the manifold will need to be reset by pressing
the “PUSH TO RESET” button on the front of the cabinet. At this time the status is changed from EMPTY to READY
mode as indicated on the LED display that the bank is now the secondary bank.
Note: the “PUSH TO RESET” button should not be pressed until the empty Liquid tank / Dewar has been replaced
with a full one.
The power supply is connected to the top right hand corner of the manifold. Connections from the manifold to the
Amico master alarm must be made from terminals marked C/Signal to the appropriate terminals (Reserve In-Use) on
the master alarm or a remote buzzer.
The Manifold is designed in accordance with the National Fire Protection Association (NFPA 99)
FEATURES INCLUDE:
• Input power to the manifold is 110-240 VAC, 50-60Hz
• Incorporates six LED’s display - readable in poor lighting conditions
• Dual line pressure regulators
• 3/4” Isolation valve for supply line
• Wall mounting bracket attached to manifold for easy installation
• Manifold complies with NFPA 99
• Economizer circuit
www.amico.com 5
Description of the Manifold
SHIPMENT DETAILS
The Manifold system may be shipped in more than one carton, depending on the number of cylinder connections. The
main carton contains the following items:
• Manifold control panel (with power supply assembly)
• Wall mounting bracket (attached to manifold control panel)
• 3/4” (19.05mm) source shut-o valve
• Installation, Operation and Service manual
Additional cartons may contain appropriate number of headers and cylinder pigtail assemblies. Cylinder inlets closest to
the manifold control panel are intended for cylinders placed directly beneath the manifold control panel. Pigtails for all
gases are 72” (1,828.8mm) exible type. The manifold is designed to be mounted directly to a wall.
THE MANIFOLD ENCLOSURE
The manifold contains a switch mode power supply that can handle voltage from 110-240 VAC with a built-in fuse and
terminal block. The enclosure on this manifold is NEMA-1 (general purpose applications only). This cabinet must not be
mounted outdoors. For outdoor use, a NEMA- 4 enclosure is recommended.
The manifold also has a latched enclosure that is easy to remove. The pre-assembled circuit board is located on the
center of the enclosure with a hinged mounting bracket. This design will reduce installation time and eliminate the risk
of improper installation, since all the components of the manifold are connected and tested at the factory.
MANIFOLD DISPLAY BOARD
The LED’s on the front of the Manifold indicate the status of the gas supply. The primary bank will indicate (In-Use, with
the Green LED turned on) and the reserve / secondary indicating (Ready, with the Yellow LED turned on) or (Empty, Red
LED turned on) depending on the status of gas. When the primary bank of cylinders are depleted, the manifold will
automatically switch to the secondary bank of cylinders without interruption of gas ow to the facility. The Red LED
will illuminate when a bank is depleted and two normally closed dry contacts will open. One or both sets of contacts
may be wired to an external alarm, remote buzzer and/or a building management system.
When replacement cylinders are attached to the depleted bank and the reset button pressed, the red LED goes out and
the yellow LED illuminates indicating that the bank has been automatically designated as the secondary supply. No
other user interaction is required. Both sets of dry contacts close to cancel any external alarm conditions.
ECONOMIZER CIRCUIT
To prevent the loss of useful gas into the atmosphere, an economizer circuit is included to utilize the accumulated
excess pressure from the secondary supply bank. The economizer circuit re-routes the excess pressure into the line via
check valves inserted into the main inlet blocks, then passes through the 0.007” orice which goes into the main center
section of the manifold.
6 Amico Pipeline
Description of the Manifold
LIQUID TANKS
Liquid cylinders contain the product in a liquid state inside of the container. The liquid has to be converted to gas before
entering the manifold. This can be done by the container VIA the internal vaporizers, or in a high or low ow situation
with an external vaporizer. The contents of the liquid container can only be measured by weight. A gauge on the tank,
or simply rocking the tank to determine its weight. The contents of the tanks cannot be measured by the pressure
output. The gauges on the manifold for bank pressure do not indicate the amount of product inside the liquid tanks.
GAS FLOW THROUGH THE MANIFOLD
The liquid containers are divided into two banks. One bank will be the “In-Use” and the other bank will be “Ready” or
secondary bank. The bank In-Use can be either bank with the other bank as secondary, depending on the current status.
As the “In-Use” bank depletes (liquid is gone and pressure drops in that bank) the manifold will switch to the secondary
bank. Indicator LEDs will change to indicate the “In-Use” now as “Empty” and the “Ready” bank will become “In-Use”.
NOTE:
It is common for the pressure on the empty bank to increase and give the false indication that the tank is full. Always check
contents of tanks via weight and oat gauge on the tank.
The “Empty” tank can then be replaced with a full one. The manifold will not reset until the “Empty” bank is replaced and the
“Push to Reset” button is pressed. At this time the status is changed from “Empty” to “Ready”. That bank is now the secondary
bank. The “Push to Test” reset should not be pressed until the empty tank has been replaced with a full one.
During normal operation this sequence of alternation will change, the “In-Use” and “Ready” banks from right hand to left
hand banks back and forth as tanks get depleted.
Depending on the amount of gas usage the pressure building valve on the tank “In-Use” may need to be left open. This
allows the tank to convert adequate liquid to gas for the higher ow needed. This will depend on the facility’s usage. This will
normally cause frosting on the outside of the container indicating the proper operation of the pressure builder. Occasional
venting of gas on the tank to relieve excessive pressure is normal and can be expected.
RESERVE (HIGH PRESSURE) BANK
The high pressure reserve bank is used to back up the liquid tanks. The reason is that sometimes the liquid tanks (both
banks) could run empty and the personnel using the system does not know how to determine the amount of liquid
content inside the tanks.
When the liquid tanks run empty, the pressure inside the manifold will drop (in the case of OXY, CO2 & N2O below 150
PSI and NIT below 275 PSI). At 80 PSI for OXY, CO2 & N2O and 180 PSI for NIT, the High Pressure Reserve manifold will
start to supply gas. An alarm from the Reserve In-Use pressure switch (set at 85 PSI for OXY, N2O & CO2 and 190 psi for
NIT) will be activated. The Reserve header has a reserve low pressure switch (to be set at 1100 PSI for OXY, NIT & AIR and
500 PSI for CO2 & N2O) that will ensure the Reserve Header has adequate volume to supply the facility until the liquid
tanks are replenished. The reserve high-pressure tank when full is usually around 2300 psi for OXY, NIT & AIR and 800
PSI for CO2 & N2O.
www.amico.com 7
Description of the Manifold
RESERVE (HIGH PRESSURE) BANK
NOTE:
Flow capacity depends on the amount of liquid containers and type of tanks/containers used. For Oxygen the average
flow per liquid tank/container is 350scfh. Flow capacity is increased with additional containers. For higher flow
requirements an external vaporizer (supplied by others) is necessary.
Description of Parts
MAIN LINE SOURCE VALVE
A 3/4” (19.05mm) isolation valve with a locking handle, supplied with the manifold
should be installed on top of the manifold connecting to the main supply line.
SOLENOID VALVE
The Solenoid valve is 12 VDC, normally open and is located between the Liquid tank/
Dewar and the Line regulator. The Solenoid is logically controlled by the micro display
board with the bank In-Use being normally opened and the reserve/secondary being
held normally closed.
PRESSURE TRANSDUCERS
The Pressure Transducer senses the bank pressure and transfers information to
the display board to indicate the In-Use, Reserve & Empty mode. There are two
transducers in the manifold cabinet, one for the left bank cylinder and one for the
right bank cylinder.
DUAL LINE REGULATOR
CHECK VALVE
A Check valve is provided upstream of each solenoid to prevent back ow while
servicing a bank.
8 Amico Pipeline
Description of Parts
LINE REGULATOR BALL VALVE
Quarter-turn ball valves are provided upstream and downstream of each
line regulator. These valves allow for removal and servicing of one of the
line regulators while the other is in use. All four ball valves are normally in
the open position.
DUAL LINE REGULATOR
On every Amico Automatic Gas Manifold the line regulator is capable
of maintaining a constant dynamic delivery of pressure at the
maximum designed flow rate of the system. For Oxygen, Nitrous
Oxide and Carbon Dioxide service, the line regulators are factory preset
at 55psi and for Nitrogen at 170psi.
PRESSURE RELIEF VALVE
Pressure relief valves are installed downstream of all pressure regulators
and are set at no more than 50% above the setting of the pressure
regulator. Relief valves are capable of fully relieving the pressure at
the set point. All pressure relief valves in the manifold have piping
connections to allow for connection of a vent line to the outside of
the facility.
FRONT PANEL INDICATORS
Six front panel indicators monitor the status of the manifold.
www.amico.com 9
Description of Parts
Microprocessor Digital Manifold
USER RESPONSIBILITY
The information contained in this Installation and Maintenance Manual, pertains only to the ALERT-2
microprocessor based digital manifold. This product will perform in conformity with the descriptions
contained in this manual when assembled, operated, maintained and serviced in accordance with the
installation instructions provided.
The manifold must be checked periodically. Parts that are broken, missing, worn, distorted or
contaminated, must be replaced immediately. Should such repair or replacement become necessary,
please contact Amico Corporation or their distributors.
Installing CO2 and N2O manifolds outdoors. Please refer to NFPA Code: 5.1.3.3.1.8 Central
supply systems for nitrous oxide and carbon dioxide shall be prevented from reaching
temperatures lower than the recommendations of the central supply system’s manufacturer,
but shall never be lower than -7°C (20°F) or greater than 54°C (130°F).
All Manifolds should not be repaired or altered without prior written approval by Amico
Corporation or it’s distributors. Failure to comply will void all warranty on the manifold.
Statements in this manual preceded by the words WARNING, CAUTION, DANGER and NOTE are of
special significance. Please read these sections carefully.
WARNING: denotes steps which can prevent injury.
CAUTION: denotes steps which can prevent damage to equipment.
DANGER: denotes steps which can prevent electrical shock to equipment or to
prevent serious injury and/or death.
POWER SUPPLY
The power supply is 110 - 240 VAC, 50-60 Hz. It is mounted on the top
right hand side of the manifold and has a 1 amp fuse.
CONTROL BOARD
The Control Board is an electronic circuit board which controls the bank
switch-over. It monitors the pressure with the help of the bank transducers
and controls the solenoid valve in order to initiate the bank switch or
changeover. The control board illuminates the appropriate front panel
LED indicators and also provides dry contacts for connections to a remote
buzzer or an external master alarm. Power to the control board is provided
by the external power supply.
DANGER: Electrical shock hazard. Ensure that the main power source is turned o during the
connection of the power supply.
GAS SERVICE IDENTIFICATION
Amico manifolds are clearly labeled for the intended gas use. The appropriate gas label is attached on the cabinet door.
There are two pipes extending from the top of the cabinet, one is for the main line pressure and the other is the vent for
the pressure relief valve, which is also labeled accordingly.
HEADER BAR CONNECTIONS
The gas-specic header bar should be attached to the inlet block on either side of the manifold. The inlet block is provided
with a sintered bronze lter and a “C” clip to secure it. The header bar should contain the proper gas connections and all
cylinder connections; as well the pigtail (hose) assemblies should comply with CGA standard B96, Compressed Gas
Cylinder Valve outlet and inlet connections.
10 Amico Pipeline
Description of Parts
OPERATING ALARM SYSTEMS
The manifold control cabinet contains the required circuitry to send a dry contact signal to the alarm unit when
a bank is empty and change-over occurs. The normally closed internal circuitry is designed to alarm when there
is an open circuit. The depletion of a bank triggers a relay, which renders the alarm circuit open and initiates the
alarm signal.
PARTS LAYOUT
Alarm Connection
Left Line Regulator
Bank Transducer
Left Bank Gauge
Line Relief Valve
Relief Valve Vent
Provision for reserve
Supply
Line Gauge
Operating Relief Valve
Power Supply
Ball Valve 4X
Bleed Valve 2X
Right Line Regulator
Bank Transducer
Right Bank Gauge
Solenoid
Economizer Circuit
Solenoid
Check Valves
www.amico.com 11
Display Functions
1. Introduce power to the control cabinet
2. Follow Cylinder Changing Procedures on the side of the cabinet to ensure that all tanks and ttings are secure and
properly connected to the header bar.
3. Check the indicator LED for proper functioning.
4. Open the Liquid Tanks one side at a time and press the “Push to Reset” button between the LED displays. One Green
LED, on the side which had the tanks opened rst should be lit for In Use and the other side should have a Yellow
LED lit for Ready.
5. Close the Liquid tank valves on the primary (In Use) bank and watch the indicator LED to ensure proper functioning.
The primary bank pressure should decrease, while the secondary and line pressures stay constant.
6. When the primary bank pressure falls to approximately 100psi for all gases except Nitrogen which is 200psi, the
bank switch-over occurs. The line pressure will remain constant with the LED illuminating, indicating the In Use and
Empty banks. After replacing the depleted gas cylinders, open the liquid tank valves on the depleted side and press
the “Push to Reset” button and the Empty bank should become Ready.
7. With the Manifold wired to the Amico Master Alarm, the change-over from primary to secondary bank will cause
an audible alarm. The appropriate indicator LED on the Master Alarm will illuminate. This can also be achieved by
usingthe switch-over test button located on the back of the control board.
The Amico Automatic Manifolds are designed in accordance with the current revision of NFPA 99.
There are two categories of the Amico Manifolds. Depending upon the delivery pressure, the following gas types
are available.
55psi Delivery Pressure
• Oxygen, Nitrous Oxide, Carbon Dioxide
170psi Delivery Pressure
• Nitrogen
NOTE:
In the event of a power uctuation or failure, a switch over alarm will be activated on the master alarm panels.
• Both the solenoid valves will open and supply pressure until both the banks are depleted.
• The solenoid will not prevent the ow from being supplied no matter which side is In-Use and until the system is
completely out of gas.
12 Amico Pipeline
Installation Precautions
Tampering with gas specic connections shall be prohibited. Do not alter, remove or modify gas specic connections.
Keep all manifold parts, tools and work surfaces free of oil, grease and dirt. These and other ammable materials may
ignite when exposed to high pressure oxygen or nitrous oxide.
• Do not use chemicals, lubricants or sealants unless specied in these instructions
• Before connecting the Liquid tank / Dewar to the manifold, ensure the tank valve is free of dirt and debris
• After connecting the tank to manifold, open the tank valve S-L-O-W-L-Y to allow heat of compression to dissipate
• Do not use ame or “sni” tests for leaks
• Do not apply heat to any part of the manifold system
• Always ensure Liquid tanks / Dewar’s are secure and on level oor
• Do not repeatedly bend, sharply bend, or twist pigtails as damage to tubing may occur
• After the manifold wall bracket has been mounted, at least two people should lift and hang the manifold cabinet, one
should not do this alone
• Do not put the manifold into operation until veried by a qualied person as per NFPA 99 or other local standards
www.amico.com 13
Wall Mounting Instructions
1. Remove manifold control panel from the shipping carton and ensure it is in upright position on the foam
packaging insert.
2. Using the back support bracket as a template, place on the flat wall, align top of the bracket with the level
horizontal line. The vertical center line of the bracket will be the vertical center line of the installed manifold. The
support bracket should be mounted 61-1/2” [1,562.1 mm] from the finished floor to the bottom hole on the
bracket as shown in Figure 1.
3. Mark locations of mounting holes. Remove the bracket and drill mounting holes. Attach the bracket to the wall
with appropriate anchors (supplied by others). 3/8” [9.525 mm] diameter anchors are recommended.
Figure 1
Mark Location
of holes
Locate bracket per
horizontal line
61 1/2”
[1,562.1mm]
To Floor
14 Amico Pipeline
Wall Mounting Instructions
4. Hang the manifold control panel on the mounting bracket. The top two control panel mounting bolts will slide
into slots of the bracket. The bottom of the manifold control panel should be angled away from the bracket until
the top two bolts have been inserted as shown in Figure 2.
Figure 2
NOTE:
A bracket mounting height of 61-1/2” [1,562.1 mm] from the nished oor to the bottom hole on the support bracket
allows for adequate clearance beneath the manifold when utilizing standard “H” size or slightly taller cylinders.
www.amico.com 15
Microprocessor Digital Manifold
USER RESPONSIBILITY
The information contained in this Installation and Maintenance Manual, pertains only to the ALERT-2
microprocessor based digital manifold. This product will perform in conformity with the descriptions
contained in this manual when assembled, operated, maintained and serviced in accordance with the
installation instructions provided.
The manifold must be checked periodically. Parts that are broken, missing, worn, distorted or
contaminated, must be replaced immediately. Should such repair or replacement become necessary,
please contact Amico Corporation or their distributors.
Installing CO2 and N2O manifolds outdoors. Please refer to NFPA Code: 5.1.3.3.1.8 Central
supply systems for nitrous oxide and carbon dioxide shall be prevented from reaching
temperatures lower than the recommendations of the central supply system’s manufacturer,
but shall never be lower than -7°C (20°F) or greater than 54°C (130°F).
All Manifolds should not be repaired or altered without prior written approval by Amico
Corporation or it’s distributors. Failure to comply will void all warranty on the manifold.
Statements in this manual preceded by the words WARNING, CAUTION, DANGER and NOTE are of
special significance. Please read these sections carefully.
WARNING: denotes steps which can prevent injury.
Microprocessor Digital Manifold
USER RESPONSIBILITY
The information contained in this Installation and Maintenance Manual, pertains only to the ALERT-2
microprocessor based digital manifold. This product will perform in conformity with the descriptions
contained in this manual when assembled, operated, maintained and serviced in accordance with the
installation instructions provided.
The manifold must be checked periodically. Parts that are broken, missing, worn, distorted or
contaminated, must be replaced immediately. Should such repair or replacement become necessary,
please contact Amico Corporation or their distributors.
Installing CO2 and N2O manifolds outdoors. Please refer to NFPA Code: 5.1.3.3.1.8 Central
supply systems for nitrous oxide and carbon dioxide shall be prevented from reaching
temperatures lower than the recommendations of the central supply system’s manufacturer,
but shall never be lower than -7°C (20°F) or greater than 54°C (130°F).
All Manifolds should not be repaired or altered without prior written approval by Amico
Corporation or it’s distributors. Failure to comply will void all warranty on the manifold.
Statements in this manual preceded by the words WARNING, CAUTION, DANGER and NOTE are of
special significance. Please read these sections carefully.
WARNING: denotes steps which can prevent injury.
Wall Mounting Instructions
5. The bottom of the control panel can then be positioned so that the holes at the bottom of the panel align
with the holes in the hanging bracket. Use 3/8” [9.525 mm] bolts to secure the cabinet to the bracket as shown
in Figure 3.
Figure 3
WARNING: Do not attempt to lift manifold alone. Two people are recommended for
hanging the manifold onto wall mounting bracket
16 Amico Pipeline
CAUTION: Do not use thread sealant on header bar or pigtail connections
Tank Installation Instructions
Microprocessor Digital Manifold
USER RESPONSIBILITY
The information contained in this Installation and Maintenance Manual, pertains only to the ALERT-2
microprocessor based digital manifold. This product will perform in conformity with the descriptions
contained in this manual when assembled, operated, maintained and serviced in accordance with the
installation instructions provided.
The manifold must be checked periodically. Parts that are broken, missing, worn, distorted or
contaminated, must be replaced immediately. Should such repair or replacement become necessary,
please contact Amico Corporation or their distributors.
Installing CO2 and N2O manifolds outdoors. Please refer to NFPA Code: 5.1.3.3.1.8 Central
supply systems for nitrous oxide and carbon dioxide shall be prevented from reaching
temperatures lower than the recommendations of the central supply system’s manufacturer,
but shall never be lower than -7°C (20°F) or greater than 54°C (130°F).
All Manifolds should not be repaired or altered without prior written approval by Amico
Corporation or it’s distributors. Failure to comply will void all warranty on the manifold.
Statements in this manual preceded by the words WARNING, CAUTION, DANGER and NOTE are of
special significance. Please read these sections carefully.
WARNING: denotes steps which can prevent injury.
Microprocessor Digital Manifold
USER RESPONSIBILITY
The information contained in this Installation and Maintenance Manual, pertains only to the ALERT-2
microprocessor based digital manifold. This product will perform in conformity with the descriptions
contained in this manual when assembled, operated, maintained and serviced in accordance with the
installation instructions provided.
The manifold must be checked periodically. Parts that are broken, missing, worn, distorted or
contaminated, must be replaced immediately. Should such repair or replacement become necessary,
please contact Amico Corporation or their distributors.
Installing CO2 and N2O manifolds outdoors. Please refer to NFPA Code: 5.1.3.3.1.8 Central
supply systems for nitrous oxide and carbon dioxide shall be prevented from reaching
temperatures lower than the recommendations of the central supply system’s manufacturer,
but shall never be lower than -7°C (20°F) or greater than 54°C (130°F).
All Manifolds should not be repaired or altered without prior written approval by Amico
Corporation or it’s distributors. Failure to comply will void all warranty on the manifold.
Statements in this manual preceded by the words WARNING, CAUTION, DANGER and NOTE are of
special significance. Please read these sections carefully.
WARNING: denotes steps which can prevent injury.
Microprocessor Digital Manifold
USER RESPONSIBILITY
The information contained in this Installation and Maintenance Manual, pertains only to the ALERT-2
microprocessor based digital manifold. This product will perform in conformity with the descriptions
contained in this manual when assembled, operated, maintained and serviced in accordance with the
installation instructions provided.
The manifold must be checked periodically. Parts that are broken, missing, worn, distorted or
contaminated, must be replaced immediately. Should such repair or replacement become necessary,
please contact Amico Corporation or their distributors.
Installing CO2 and N2O manifolds outdoors. Please refer to NFPA Code: 5.1.3.3.1.8 Central
supply systems for nitrous oxide and carbon dioxide shall be prevented from reaching
temperatures lower than the recommendations of the central supply system’s manufacturer,
but shall never be lower than -7°C (20°F) or greater than 54°C (130°F).
All Manifolds should not be repaired or altered without prior written approval by Amico
Corporation or it’s distributors. Failure to comply will void all warranty on the manifold.
Statements in this manual preceded by the words WARNING, CAUTION, DANGER and NOTE are of
special significance. Please read these sections carefully.
WARNING: denotes steps which can prevent injury.
CAUTION: This section contains important information necessary for proper installation. Read it
carefully before installing Header bars
• Position the wall brackets
• Connect the two header bar assemblies to the inlet blocks on either side of the cabinet
• Secure the Header bar assembly by tightening the union nuts onto the inlet blocks
• Remove the plug and chain assembly on each of the outlet connections on the header bar
• Attach the pigtails to the header bar connections while ensuring the check valves are operating in the proper direction
In accordance with NFPA 99, the manifold can then be connected to it.
The outlet pipes leading from the Amico control cabinet should be connected to their respective pipeline system
connections. The connection to the relief valves should be made with a union (supplied by others) to facilitate
change, if required.
An appropriate sealing compound that is suitable for the gas being transmitted shall be used for threaded connections.
WARNING: To avoid contamination with particles or other potentially hazardous materials, keep
pigtails in plastic wrapping until such time as connection to gas cylinder is planned
WARNING: If downstream joints near the cabinet outlet are to be silver brazed, special attention
must be given not to overheat the copper tubing, since this may alter the sealing compound
used in the threaded joints leading from the control cabinet
www.amico.com 17
Testing for Leaks
The following instructions apply for performing a leak test on the joints made during assembly and connection of
the Amico manifold.
The connections inside the Amico control cabinet have been inspected at the manufacturing plant and DO NOT
require leak testing. In order to determine whether any leaks exist between the tank and header bar sections or at
the pipeline connections, the systems must be pressurized using either oil-free dry air or oil-free dry nitrogen.
In the case of medical Oxygen, Nitrous Oxide, or Carbon Dioxide Amico manifolds, the actual service gases
ARE NOT suitable for leak testing due to their inherent dangerous properties. Leak testing must be performed
using either oil-free dry air or oil-free dry nitrogen.
• Connect a Liquid tank of the manifold service gas to the header bars on each side of the manifold using the
proper tank connection hose assemblies (pigtails) supplied
• Make sure all other outlets are capped with the plug and chain assemblies supplied
• Make sure that the pressure inlet valves of each bank are fully OPEN
• “S-L-O-W-L-Y” open the tank valves on each side of the cabinet, one side at a time, to pressurize the header
bar and pipeline
• All outlets from the pipeline, downstream of the manifold, should be closed and thus there should be no
ow from the manifold
• Check for leaks at all tank extension joints and at the joints where the pipes are connected to the pipeline,
using a commercial leak detector which is compatible with oxygen
• If any leaks are found the system must be depressurized by bleeding through a convenient pipeline outlet
and the faulty connections must be repaired
• The Header bar connections may be tightened one more turn maintaining the horizontal location of the
tank adapters, or a further application of an oxygen service threaded sealant may be required
• If the brazed pipeline connections leak they must be removed, cleaned and then re-brazed following the
proper technique. All repaired joints must be pressure tested as mentioned previously
18 Amico Pipeline
Initial Power-Up
Release the two latches on either side of the manifold control panel and remove the cover.
1.
2.
Verify the following:
• Both master valves located on both header bars are open
• All four line regulator isolation valves are open (handles in horizontal position)
• Power supply has been connected
• Both Red “Empty” indicators on the front of the manifold are illuminated
• If connected to a master alarm panel, “Secondary Supply” alarm is activated
Close 3/4” source shut-o valve.
3.
4.
Slowly open one tank on the right side of the manifold and press the “Push to Reset” button between
the bank LED indicators.
5.
Verify the following:
• Right bank Red “Empty” LED goes out
• Right bank Green “In Use” LED illuminates
• Right bank cylinder contents gauge reads cylinder pressure
6.
Slowly open one tank on the left side of the manifold and press the “Push to reset” button between the bank indicators.
7.
Verify the following:
• Left bank Red “Empty” LED goes out
• Left bank Yellow “Ready” LED illuminates
• Left bank cylinder contents gauge reads cylinder pressure
• If connected to a master alarm panel, “secondary supply” alarm is not activated
8.
Close right bank cylinder. Slightly depress bleed valve located on the side of the regulator. Verify the following:
• Right bank cylinder contents gauge drops slowly
• As the right cylinder contents gauge is nearly depleted, the manifold changes over to the left bank
• After change-over, the right bank Green “In Use” LED goes out and the Red “Empty” LED illuminates
• After change-over, the left bank Yellow “Ready” LED goes out and the Green “In Use” LED illuminates
9.
Verify the “line pressure” gauge reading is acceptable.
10.
Slowly open one cylinder on the right side of the manifold and press the “Push to Reset” button.
www.amico.com 19
Initial Power-Up
11. Verify the following:
• Right bank Red “Empty” LED goes out
• Right bank Yellow “Ready” LED illuminates
• Right bank tank contents gauge reads cylinder pressure
12. Close left bank tank. Slightly press bleed valve located on the side of the line regulator. Verify the following:
• Left bank tank contents gauge drops slowly
• As left cylinder contents gauge is nearly depleted, the manifold changes over to the right bank
• After change-over, the left bank Green “In Use” LED goes out and Red “Empty” LED illuminates
• After change-over, the right bank Yellow “Ready” LED goes out and Green “In Use” LED illuminates
13. Slowly open one cylinder on the left side of the manifold and press the “Push to Reset” button
14. Verify the following:
• Left bank Red “Empty” LED goes out
• Left bank Yellow “Ready” LED illuminates
• Left bank cylinder contents gauge reads tank pressure
• If connected to a master alarm panel, “secondary supply” alarm is not activated
15. Close left and right side cylinders.
16. Record pressure readings of left and right bank tank contents gauges.
17. Wait 15 minutes.
18. Compare current readings of the left and right bank tank contents gauges to those recorded in step 16. If
there is a noticeable pressure change on either gauge, perform leak testing described in Testing For Leaks
(page 20).
19. Reinstall manifold control panel cover.
20. Slowly open all tanks on both banks of the manifold.
21. Open 3/4” (19.05mm) source valve.
20 Amico Pipeline
Line Regulator Pressure Adjustment
This procedure should be performed if the line regulator pressure is not within acceptable limits during performance
verication procedure or after installation of a new line regulator.
1. With both the banks supplying pressure, open ball valves on the inlet and outlet on only one side of the line regulator
to be adjusted.
2. Slightly press the bleed valve on the side of the regulator to create a small ow of gas though the manifold.
3. Using the handle on the bonnet of the regulator, turn to adjust the pressure to the specied setting, as mentioned on
the cabinet door by observing the line gauge.
4. Repeat (steps 1-3) to adjust the other line regulator.
5. After adjusting the pressure to the specied setting open all balls valves and ensure the supply line remains open.
Line Regulator Replacement
If necessary, the line regulator replacement can be performed while manifold is in service. However, this should only be
done by qualied technicians experienced in servicing medical equipment.
1. Close the two ball valves on inlet and outlet of line regulator to be replaced.
2. Loosen union nuts on two closed isolation valves.
3. Vent pressure from the bank, which was shut o in step 2, by pressing the bleed valve on side of the regulator.
4. Ensure the orientation of ttings (direction of gas ow) is the same on the replacement regulator. Install ttings on new
regulator.
5. Inspect O-ring removed from the ball valve union. If damaged, replace O-ring.
6. Verify the correct orientation of ttings on the regulator; some slight adjustment may be required to align with the
ball valves without causing stress to the ttings.
7. Hand-tighten the two ball valve union nuts and then with a wrench snug lightly to ensure the ttings are secure.
NOTE: do not over tighten unions, as it is an o-ring seal.
8. Open ball valves and set the line regulator’s output pressure as described in Line Regulator Pressure Adjustment procedure.
www.amico.com 21
Control Board Replacement
If necessary, the control board replacement can be performed while the manifold is in service. However, this should only
be done by qualied technicians experienced in servicing medical equipment.
1. Remove two top screws at the base of the display board bracket and tilt the display board assembly back.
2. Disconnect power supply.
3. Remove the screws located on the circuit board, which detaches it from the front plate. Note orientation of the old
circuit board and remove wiring one at a time and connect each wire to the appropriate terminal on the new board.
4. Install the circuit board and fasten the screws to secure it. Return bracket to its original position and then fasten the two
screws at the base.
5. Reconnect power supply to the manifold cabinet.
6. Check the correct operation of the circuit board by simulating a bank switch over a couple of times.
Solenoid Replacement
1. Ensure the Solenoid that needs to be replaced is not the side that is In-use.
2. Disconnect power supply if manifold is not in service.
3. Remove two top screws at the base of the display board bracket and tilt the display board assembly back and with
the help of a small at screw driver, disconnect the solenoid wires labeled L for left and R for right to indicate the side
of the solenoid from the terminal block on the circuit board.
4. Remove the two union nuts on either side of the solenoid, one located at the inlet side and the other at the
output side of the solenoid.
5. Install the replacement solenoid and tightened the union nuts on either side to ensure the solenoid is secure.
6. Connect the solenoid wires to the appropriate terminal on the circuit board.
7. Return the circuit board bracket back to upright position and then fasten the two screws at the base.
8. Reconnect power supply to the manifold cabinet.
9. Check the correct operation of the solenoid by simulating a bank switch over a couple of times.
22 Amico Pipeline
Tank Changing Procedures
Microprocessor Digital Manifold
USER RESPONSIBILITY
The information contained in this Installation and Maintenance Manual, pertains only to the ALERT-2
microprocessor based digital manifold. This product will perform in conformity with the descriptions
contained in this manual when assembled, operated, maintained and serviced in accordance with the
installation instructions provided.
The manifold must be checked periodically. Parts that are broken, missing, worn, distorted or
contaminated, must be replaced immediately. Should such repair or replacement become necessary,
please contact Amico Corporation or their distributors.
Installing CO2 and N2O manifolds outdoors. Please refer to NFPA Code: 5.1.3.3.1.8 Central
supply systems for nitrous oxide and carbon dioxide shall be prevented from reaching
temperatures lower than the recommendations of the central supply system’s manufacturer,
but shall never be lower than -7°C (20°F) or greater than 54°C (130°F).
All Manifolds should not be repaired or altered without prior written approval by Amico
Corporation or it’s distributors. Failure to comply will void all warranty on the manifold.
Statements in this manual preceded by the words WARNING, CAUTION, DANGER and NOTE are of
special significance. Please read these sections carefully.
WARNING: denotes steps which can prevent injury.
Microprocessor Digital Manifold
USER RESPONSIBILITY
The information contained in this Installation and Maintenance Manual, pertains only to the ALERT-2
microprocessor based digital manifold. This product will perform in conformity with the descriptions
contained in this manual when assembled, operated, maintained and serviced in accordance with the
installation instructions provided.
The manifold must be checked periodically. Parts that are broken, missing, worn, distorted or
contaminated, must be replaced immediately. Should such repair or replacement become necessary,
please contact Amico Corporation or their distributors.
Installing CO2 and N2O manifolds outdoors. Please refer to NFPA Code: 5.1.3.3.1.8 Central
supply systems for nitrous oxide and carbon dioxide shall be prevented from reaching
temperatures lower than the recommendations of the central supply system’s manufacturer,
but shall never be lower than -7°C (20°F) or greater than 54°C (130°F).
All Manifolds should not be repaired or altered without prior written approval by Amico
Corporation or it’s distributors. Failure to comply will void all warranty on the manifold.
Statements in this manual preceded by the words WARNING, CAUTION, DANGER and NOTE are of
special significance. Please read these sections carefully.
WARNING: denotes steps which can prevent injury.
1. Keep the main bank valve open throughout these procedures.
2. Close tank valves on all empty tanks.
3. Disconnect hose / pigtails from tank valve outlets using an appropriate wrench.
4. Place protective caps over the tank valves of the empty tanks and move them aside.
5. Visually inspect the tank valves for dust, grease or oil.
6. Using a clean (lint free) cloth, wipe each tank valve outlet clean. Do not use your ngers.
7. Connect the hose / pigtails to the tank valve outlets and tighten the nut with an appropriate wrench.
8. Very S-L-O-W-L-Y open the valve on the tank closest to the control cabinet. Watch the bank pressure display on
the front of the cabinet to make sure the pressure rises slowly.
9. S-L-O-W-L-Y open the remaining tank valves one at a time.
WARNING: Oxygen systems must be handled with CAUTION. Spontaneous combustion may occur
if oxygen comes into contact with grease or oil. Ensure that hands, gloves, clothing and tools are
kept clean and free of oil and grease. Be careful not to introduce dust or other contaminants into
the system when changing tanks. Failure to comply with the procedure may be hazardous
WARNING: Fire Hazard. DO NOT permit smoking, or any other source of ignition in area where
the manifold is located, or near the relief valve vent outlet. Be certain that all connections are free
of dirt, grease, and oil. These substances burn with great intensity in air enriched with oxygen, or
nitrous oxide and some gas mixtures
www.amico.com 23
Ordering Information
Manifold Cabinet:
A = Analog
DS = Dual Solenoid
LL = Liquid
The Letter “L” Denes
the Langauge:
U = English (NFPA)
S = Spanish (NFPA)
Header-Bar Assembly:
M3A-DS-LL-L-XXX
The Letters “XXX”
Dene the Gas:
OXY = Oxygen
N2O = Nitrous Oxide
CO2 = Carbon Dioxide
NIT = Nitrogen
M2-HBLQ-XXL-XXX
Number of Cylinders:
LQ = Straight c/w Cryogenic Pigtails
(1*1=02)
(2*2=04)
24 Amico Pipeline
Control Cabinet Parts List
DESCRIPTION MODEL NUMBER
Pressure transducer for Oxy, N2O, CO2, & Nit
Line pressure regulator for Heavy Duty Manifolds
For NIT
Repair Kit - Line pressure regulator
Intermediate check valve for all gases
Operating pressure relief valve
Pipe away adaptor
Line Pressure relief valve for Nitrogen
Line pressure relief valve for Oxy, N2O, & CO2
Pigtail c/w Check valve – Cryogenic
ALERT-2.1 LED circuit board
Manifold Power Supply Board
Solenoid Valve
Economizer check valve
M2-X-MAN-07C
M2-X-MAN-42E-L
M2-X-MAN-42E-R
M2-X-MAN-42E-LN
M2-X-MAN-42E-RN
M2-REG700-RK
M-X-MAN-33B
M-X-MAN-72W-500
M-X-PIPEAWAY-GNT
M-X-IN-72W-225
M-X-IN-72W-075
M-X-HB-CRYO-GAS
GAS= OXY, N2O, NIT & CO2
M3-LED-DLCB
M2-X-POWER
M3-X-LIQ-SOLVLV
M2-X-MAN-31
www.amico.com 25
Appendix A
Manifold Internal Layout
26 Amico Pipeline
Appendix B
Piping Schematic Diagram
PIPING SCHEMATIC DIAGRAM
DUAL LINE REGULATORS (NFPA)
PROVISION
VENT TO
OUTSIDE
FOR
RESERVE
TO
PIPELINE
DISTRIBUTION
SYSTEM
LEFT HAND BANK
CYLINDER PRESSURE
7
4
3
HP
LB
LEFT
BANK
9
HP
RB
RIGHT
BANK
7
CONTROL CABINET
4
RIGHT HAND BANK
3
1
2
CYLINDER PRESSURE
Item
1
Pig-Tail check valve
2
Cylinder valve
3
High pressure inlet valve
4
Pressure Transducer
5
Solenoid Valve
6
Check valve
Line pressure regulator
7
8
2-Way valve
Line pressure relief valve
9
Operang pressure relief valve
10
11
Bleed Valve
Descripon
88
11
11
10
6
5
6
6
5
www.amico.com 27
Appendix C
Electrical Wiring Diagram
Amico Medical Gas Alarm
Master Alarm
115 VAC
Supply
Voltage
Amico Gas
Manifold
Connect the NO loop to the
appropriate points.
C
NO
110 / 240 VAC Wiring
50 / 60 Hz
Current Draw: 1 Amp. Max.
External Power
Supply
28 Amico Pipeline
Appendix D
Control Cabinet Wiring Diagram
www.amico.com 29
Appendix E
Liquid Setup with Header Bars
NOTE: A standard 450psi relief valve is
provided on the header.
Relief Valve Vent
Approx. Approx.
40 [1016]
Dependent upon type
of Liquid cylinder used.
OXYGEN
Push
To
Start
17
[432]
3/4” Isolation Valve
Provision for Reserve Manifold
Supply Line
H.P. Vent (1/2" NPT)
40 [1016]
Dependent upon type
of Liquid cylinder used.
9
[229]
Inch
[mm]
19
[432]
Minimum tank pressure
must be at least 300 psi
for Liquid Nitrogen and
200 psi for all other gases.
60
[1524]
Front View
60
[1524]
Minimum tank pressure
must be at least 300 psi
for Liquid Nitrogen and
200 psi for all other gases.
Minimum tank pressure
must be at least 300 psi
for Liquid Nitrogen and
200 psi for all other gases.
Side View
30 Amico Pipeline
Appendix F
Top View
Set at 1100 psi Decreasing
Set Reg. to 80 - 85 psi
110 psi NFPA Relief Valve
Set at 85psi Decreasing
Piping Not Included
5
4
3
8 7 6
2
1
2
Liquid Manifold with High Pressure Reserve
Supply Line
Provision for Reserve Manifold
Relief Valve Vent 1/2” (NPT)
Approx. Approx.
40 [1016]
OXYGEN
H.P. Vent
(1/2" NPT)
40 [1016]
Dependent upon type
of Liquid cylinder used.
Minimum tank pressure
must be at least 300 psi
for Liquid Nitrogen and
200 psi for all other gases.
60
[1524]
Push
To
Start
60
[1524]
must be at least 300 psi
200 psi for all other gases.
Minimum tank pressure
for Liquid Nitrogen and
(1) M3A-DS-LL-U-OXY
(2) M2-HBLQ-02U-OXY
(3) M-PRSW-GA-ORES
(4) M-SIMP-U-08-OXY
(5) M-PRSW-RES-OXY
(6) M-X-MAN-72W-125
(7) VV-CHK-(PIPE SIZE)
(8) VV-ISO-G-(PIPE SIZE)
www.amico.com 31
www.amico.com
C US LISTED
Amico Pipeline | www.amico.com
85 Fulton Way, Richmond Hill
Ontario, L4B 2N4, Canada
Toll Free Tel: 1.877.264.2697
Toll Free Fax: 1.866.440.4986
Tel: 905.764.0800
Fax: 905.764.0862
Email: info@amico.com
APE-INSTAL-MAINT-SOL-LIQ-MANI 12.13.2013
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