Page 1
Operating & Maintenance Manual
www.amico.com
Automatic Medical Gas Manifold
Dome Loaded Regulator NFPA v1.2
Page 2
Contents
User Responsibility 4
Introduction 5
Features 5
Description of the Manifold 6
Shipment Details 6
The Manifold Enclosure 6
Header Bar Wall Support Bracket 6
Manifold Display Board 6
Description of Parts 7-10
Main Line Source Valve 7
Bank Regulator 7
Pressure Transducers 7
Check Valve 7
Line Regulator Ball Valve 8
Dual Line Regulator 8
Pressure Relief Valve 8
Pilot Regulator 8
Solenoid Valve 8
Front Panel Indicators 9
Power Supply 9
Control Board 9
Gas Service Identication 10
Header Bar Connections 10
Operating Alarm System 10
Display Functions 11
Installation 12
Wall Mounting Instructions 13-14
Cylinder Bank Installation Instructions 15
Testing for Leakage 16-17
Initial Power-Up 18-19
Gas Flow Through the Manifold 20
Manifold Switch Over 21
Performance Verication 22-23
Bank Regulator Pressure Adjustment 24
Bank Regulator Replacement 25
Line Regulator Pressure Adjustment 26
Line Regulator Replacement 26
Control Board Replacement 27
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Cylinder Changing Procedures 28
Ordering Information 29-30
Control Cabinet Part List 29
Appendix A: Manifold Internal Layout 31
Appendix B: Piping Schematic Diagram 32
Appendix C: Wiring Schematic Heater Units 33
Appendix D: Electrical Wiring Diagram 34
Appendix E: Control Cabinet Wiring Diagram 35
Appendix F: Staggered Header Bar 36
Appendix G: Straight Header Bar Setup 37
Appendix H: Optional Header Bar Setup 38
Appendix I: Standard Manifold Flow Rates 39
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Page 4
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 Gas
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.
For installing CO₂ and N₂O manifolds outdoors, please refer to NFPA 99C:
“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 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 prevent serious injury and/or death.
4 Amico Pipeline
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Introduction
The Amico Automatic Gas Manifold is a one of a kind design that provides a reliable, uninterrupted supply of gas to a
hospital or other medical facility. The manifold utilizes multiple high-pressure cylinders 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 is 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 replacement cylinders are attached to the depleted bank, 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 condition.
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 enclosure for the manifold is NEMA-1 (general purpose applications only) and it is not recommended to be mounted
outdoors.
The manifold has a removable front cabinet. The pre-assembled circuit board is mounted directly to the back plate of
the manifold. This design will reduce installation time and eliminate the risk of improper installation, since each of the
components of the manifold are connected and tested at the factory.
The Amico Automatic Gas 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 and the digital display is readable even in the poorest of lighting conditions
• Dual line Pressure regulators
• Single vent access from line and operating relief valve
• Wall mounting bracket attached to manifold for easy installation
• Manifold complies with NFPA 99
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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” Source shut-o valve
• Installation, Operation and Service Manual
Additional cartons may contain the appropriate number of header bars and cylinder pigtail assemblies. As standard,
header bar assemblies are congured so that cylinder inlets are on 11” centers. Cylinders may be placed in a double row
“Staggered” or single row “Straight” conguration. Cylinder inlets closest to the manifold control panel are intended for
cylinders placed directly beneath the manifold control panel. For gases other than oxygen and helium, 36” stainless steel,
exible type pigtails are used. Oxygen and helium pigtails are rigid copper and are pre-bent to the approximate shape
for connection to the cylinders. The manifold is designed to be mounted directly to a wall.
THE MANIFOLD ENCLOSURE
The manifold enclosure 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.
The manifold also has a latched door that is easy to remove. The pre-assembled circuit board is located at the center of
the enclosure with a hinge mounting bracket. This design reduces installation time and eliminates the risk of improper
installation, since all the components of the manifold are connected and tested at the factory.
HEADER BAR WALL SUPPORT BRACKET
The manifold can support, at maximum, a 5x5 staggered header bar. While the straight header
bar contains a wall support bracket on every second pipe in between each cylinder, a standard
staggered header bar has a wall support bracket in place after every 5 cylinders, unless additional
support is requested.
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, with
the Red LED turned on depending on the status of the gas supply. When the primary bank of cylinders is 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.
6 Amico Pipeline
Page 7
Description of Parts
When replacement cylinders are attached to the depleted bank, 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 condition.
MAIN LINE SOURCE VALVE
A ¾ “ isolation valve with a locking handle, supplied with the manifold,
should be installed on top of the manifold connecting to the main supply line.
BANK REGULATOR
A dome loaded, single stage, diaphragm type regulator is used to reduce
the pressure of incoming cylinder contents to a lower intermediate pressure.
A bank regulator (one for each bank of cylinders) has an internal adjusting
spring used to set a “base” pressure of approximately 100 PSI (200 PSI on
Nitrogen manifolds). The “dome” (i.e. bonnet or bell) of the regulator is a
pressure tight chamber. When pressure is applied to the dome, the amount
of force applied is added to the force of the adjusting spring. For example,
when 55 PSI of pressure is applied to the dome, then the 100 PSI base
pressure setting is raised to approximately 155 PSI.
PRESSURE TRANSDUCERS
The pressure transducer senses the bank pressure and transfers information
to the display board to indicate the In Use, Reserve and Empty modes. There
are two transducers in the manifold cabinet, one for the left bank cylinder
and one for the right bank cylinder.
CHECK VALVE
The check valve is located upstream of each bank regulator to prevent back
ow while servicing a bank regulator.
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Page 8
Description of Parts
LINE REGULATOR BALL VALVE
Quarter-turn ball valves are located upstream and downstream of each line
regulator. These valves allow for removal and servicing of one line regulator while
the other is in use.
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 designated ow rate of the
system. For Oxygen, Nitrous Oxide, Medical Air and Carbon Dioxide service, the line
regulators are factory preset at 55 psi and for Nitrogen at 170 psi.
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.
PILOT REGULATOR
A single stage, diaphragm type, relieving regulator used to limit the amount of
pressure provided to the domes of the bank regulator. It is used only on Nitrogen
manifolds and manifolds with 100 PSI delivery pressure.
SOLENOID VALVE
A 12 VDC solenoid assembly is used to direct dome bias pressure to one of the bank
regulators. As dome bias pressure is directed to one of the bank regulators, dome
pressure of the other bank regulator is vented through an exhaust in the solenoid
valve.
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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.
Description of Parts
FRONT PANEL INDICATORS
Six front panel indicators monitor the status of the manifold.
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 is provided with a 1 amp fuse.
CONTROL BOARD
The control board is an electronic circuit board that 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 indicators and also provides dry contacts for the activation
of a remote buzzer or 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.
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Description of Parts
GAS SERVICE IDENTIFICATION
Amico manifolds are clearly labeled for the intended gas use, with the appropriate gas identied with a label that 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 for the vent of the pressure relief valves, 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 should contain the proper gas connections
and all cylinder bar connections. The pigtail (hose) assemblies should comply with CGA standard B96, “Compressed Gas
Cylinder Valve Outlet and Inlet Connections.”
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 changeover 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.
10 Amico Pipeline
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Display Functions
1. Introduce power to the control cabinet.
2. Follow Cylinder Changing Procedures on the side of the cabinet to ensure that all cylinders and ttings are secure
and properly connected to the header bar.
3. Check the indicator LED for proper functioning.
4. Only one Green LED, on the side which had its operating regulator set rst, should be lit and the other side should
have a Yellow LED lit.
5. Close the cylinder valve on the primary bank and watch the indicator LED to ensure proper functioning. The
primary bank pressure should fall, while the secondary and line pressures stay constant.
6. When the primary pressure falls to approximately 120 psi for all gases (or 220 psi for Nitrogen) the bank switch
over occurs and the line pressure will remain constant with the LED display indicating the Bank In-Use.
7. With the Amico Automatic Gas Manifold wired up to the Amico Master Alarm, the changeover from primary to
secondary supply will cause an audible alarm buzzer and the appropriate indicator LED on the Master Alarm will
illuminate. This can also be achieved by using the switch over test button located on the back of the control board.
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Page 12
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 cylinder to manifold, momentarily open and close cylinder valve to blow out dirt and
debris.
• After connecting cylinder to manifold, open cylinder 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 secure high-pressure cylinders with racks, straps or chains. Unrestrained cylinders may fall over and
damage or break o cylinder valve.
• Do not repeatedly bend, sharply bend or twist copper pigtails as damage to tubing may occur.
• After the manifold wall bracket has been mounted, one person alone should not attempt to lift and hang
the manifold cabinet.
• Do not put the manifold into operation until veried by a qualied person as per NFPA 99 or other local
standards.
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Wall Mounting Instructions
1. Remove manifold control panel from the shipping carton. If the manifold will be placed on a at surface in the
upright position, do not remove the foam packaging material or the manifold may tip over. Only remove the foam
packaging material when ready to hang the manifold on the mounting bracket (in step 4).
2. Using the back support bracket as a template, place on the at wall and align the 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 nished oor to the bottom hole of 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
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Page 14
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.
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.
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.
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 2
WARNING: Do not attempt to lift manifold alone. Two people
are recommended in order to hang manifold onto wall
mounting bracket
CAUTION: Do not use thread sealant on header or pigtail
connections.
CAUTION: Each header segment must be supported by a
header bracket before additional header segment are added.
Figure 3
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Page 15
Cylinder Bank 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 of the
cylinder banks. Read it carefully before installing cylinder banks.
• Position the wall brackets, if required, to support the header bars and bolt in place.
• Connect the two high pressure inlet valve/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. The manifold can support
a maximum 5x5 staggered header bar. While the straight header bar contains a wall support bracket on every
second pipe in between each cylinder, for the staggered orientation a support bracket is installed after every
4-5 cylinders, unless additional support is required.
• Remove the plug and chain assembly on each of the outlet connections on the cylinder extension bar. Attach
the cylinder pigtails to the header bar connection, while ensuring the check valves are operating in the proper
direction.
WARNING: To avoid contamination with particles or other potentially hazardous materials, keep
When the medical gas piping system has been tested 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.
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.
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Page 16
Testing for Leakage
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 cylinder 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 of oil-free dry nitrogen. In the case of either medical air or a nitrogen Amico manifold, the actual service gas may
be used to perform the leak tests as follows:
1. Connect a cylinder of the manifold service gas to each side of the header bar using the proper cylinder connection
hose assemblies (pigtails) supplied.
2. Make sure all other outlets are capped with the plug and chain assemblies supplied.
3. Make sure that the high pressure inlet valves of each bank are fully OPEN.
4. S-L-O-W-L-Y open the two cylinder valves on each side of the cabinet, one at a time, to pressurize the header bar
and pipeline.
5. All outlets from the pipeline, downstream of the manifold, should be closed and thus there should be no ow
from the manifold.
6. Check for leaks at all cylinder extension joints and at the joints where the pipes are connected to the pipeline,
using a commercial leak detector which is compatible with oxygen.
7. If any leaks are found the system must be depressurized by bleeding through a convenient pipeline outlet and the
faulty connections must be repaired.
8. The header bar connections may be tightened one more turn to maintain the horizontal location of the cylinder
adapters or a further application of an oxygen service threaded sealant may be required.
9. 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 above.
16 Amico Pipeline
Page 17
Testing for Leakage
Precautions
The Amico Automatic Gas Manifolds are designed in accordance with the current revision of NFPA 99.
There are three categories of Amico manifolds depending upon the delivery pressure. The following gas types are
available for each delivery pressure:
55 PSI Delivery Pressure
• Oxygen, Nitrous Oxide, Medical Air, Carbon Dioxide, Helium, Argon
100 PSI Delivery Pressure
• Oxygen, Medical Air, Carbon Dioxide
170 PSI Delivery Pressure
• Nitrogen, Instrument Air
Delivery (Line) Pressure - (see above)
55 PSI 100 PSI 170 PSI
Intermediate Pressure - Ready Bank 100 PSI 200 PSI 200 PSI
Dome Bias Pressure 55 PSI ** 50 PSI 50 PSI
Intermediate Pressure - In-Use Bank 150 ± 10 PSI* 250 ± 10 PSI 250 ± 10 PSI
Intermediate Relief Valve 350 PSI 350 PSI 350 PSI
Line Regulator Relief Valve 75 PSI 150 PSI 225 PSI
Maximum Inlet Pressure 3000 PSI 3000 PSI 3000 PSI
* The intermediate pressure valve of the “In-Use” bank is dependent upon the dome bias pressure. Variations from the 55
PSI delivery pressure will aect the intermediate pressure reading.
** Same as delivery pressure.
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Page 18
Initial Power-Up
1. Release the two latches on either side of the manifold control panel and remove the cover.
2. Verify the following:
• Both master valves located on both header bars are turned fully counter clockwise (open).
• All four line regulator isolation valves are open (handles horizontal).
• 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.
3. Close 3/4” source shut-o valve.
4. Slowly open one cylinder on the right side of the manifold
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 cylinder on the left side of the manifold.
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.
18 Amico Pipeline
Page 19
Initial Power-Up
10. Slowly open one cylinder on the right side of the manifold.
11. Verify the following:
• Right bank Red “Empty” LED goes out.
• Right bank Yellow “Ready” LED illuminates.
• Right bank cylinder contents gauge reads cylinder pressure.
12. Close left bank cylinder. Depress valve located on the side of the line regulator. Verify the following:
• Left bank cylinder contents gauge drops slowly.
• As left cylinder contents gauge is nearly depleted, the manifold changes over to the right bank.
• After changeover, the left bank Green “In Use” LED goes out and Red “Empty” LED illuminates.
• After changeover, 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.
14. 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.
15. Close left and right side cylinders.
16. Record pressure readings of gauges for left and right bank cylinder contents.
17. Wait 15 minutes.
18. Compare current readings of the gauges for the left and right bank cylinder contents to those recorded in step 16.
If there is a noticeable pressure change on either gauge, perform leak testing described in Leak Testing.
19. Reinstall manifold control panel cover.
20. Slowly open all cylinders for both banks of the manifold.
21. Open 3/4” source shut-o valve.
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Page 20
Gas Flow Through the Manifold
High pressure gas is provided to the left and right manifold bank inlets via cylinders, pigtails and header assemblies.
Flow of high pressure gas through the left and right side of the manifold is identical, each passing through a master valve
located on the header and then directly to a bank regulator.
Bank regulators reduce incoming cylinder pressures to an intermediate pressure. Bank regulators are referred to as a
“dome loaded” type of regulator. These regulators have an internal adjusting spring manually set at a specic pressure
similar to other diaphragm type pressure regulators. In addition to an internal adjusting spring, bias pressure may be
applied to the dome of the regulator (on the adjusting spring side of diaphragm) thus boosting pressure above what
is manually set by the adjusting spring. This output pressure boost will be approximately equal to the amount of bias
pressure.
For example, if a bank regulator is manually adjusted to 100 psi via the internal adjusting spring, and a dome bias
pressure of 55 psi is applied, the output pressure will increase to approximately 155 psi (100 + 55). When the bias
pressure is removed, the output pressure setting will return to 100 psi.
Outputs of both the left and right bank regulators pass through check valves and connect together upstream of the dual
line regulator assembly. An intermediate relief valve protects components between the bank and line regulators in the
event of a bank regulator seat failure.
The dual line regulator assembly consists of two line regulators plumbed in parallel with upstream and downstream
isolation 1/4” turn ball valves. Output of both the line regulators tee together and exit at the manifold’s main outlet. A line
relief valve along with a line pressure gauge is connected to the manifold’s main outlet.
Outlet pressure is then routed to a dome regulator reducing pressure to 55 psi at the solenoid switch. The solenoid
switches 55 psi (dome bias pressure) to one of the bank regulators. When one bank regulator is supplied bias pressure,
the other bank’s dome regulators are vented to the atmosphere. An electronic circuit board controls the solenoid valve
based upon the input received from the right and left pressure transducer. The solenoid valve directs bias pressure to the
bank designated as primary.
Manifolds designed for 55 psi nominal output pressure do not incorporate a Pilot regulator. Full line pressure (55 psi) is
routed directly to the solenoid valve which is used as dome bias pressure.
20 Amico Pipeline
Page 21
Manifold Switch Over
After electrical power has been applied to the manifold, the side pressurized rst is designated the primary or “In Use”
bank. In order to simplify the following explanation, we will arbitrarily select the right side of the manifold as the primary
bank. The Green “In Use” LED on the right side will be illuminated and the Yellow “Ready” LED on the left (secondary) bank
will be illuminated.
The Solenoid valve directs dome bias pressure to the bank regulator on the right side. If we use a 55 psi oxygen manifold
as an example, the output of the right bank pressure regulator is approximately 155 psi (100 psi base pressure + 55 psi
bias pressure).The output of the left bank regulator is a approximately 100 psi (base pressure only, no bias pressure).
Since the bank regulator on the right side has the highest pressure, all ow is supplied by the right bank of cylinders.
As the cylinder pressure on the right side depletes, the pressure transducer on that side signals to the circuit board
to switch the solenoid valve. The solenoid valve then vents the dome bias pressure from the right bank regulator and
directs the bias pressure to the left bank regulator. The Green LED “In Use” on the right side goes out and the Red “Empty”
LED illuminates, indicating a Reserve In Use alarm with the Yellow LED on the left turning o and the Green LED being
illuminated.
When cylinders on the right side are replaced and pressure is restored, the right pressure transducer sends a signal to
the circuit board which, in turn, cancels the remote switchover alarm and the Red “Empty” LED turns o and the Yellow
“Ready” LED gets illuminated.
Since the left bank regulator has the dome bias pressure applied, its output pressure is boosted to approximately 155
psi. The right bank regulator has no dome bias pressure and its output pressure is controlled only by base pressure (100
PSI). All ow is supplied by the left bank of cylinders until the pressure drops to approximately 120 psi, then the pressure
transducer sends a signal to the circuit board causing a switchover to the right side in the same fashion as previously
described.
NOTE:
In the event of a power uctuation or failure, a switchover alarm will be activated on the master alarm panels.
• The solenoid valve will direct dome bias pressure to the left tank, which is the default side, if the right side is In
Use.
• If the left side is In Use, the solenoid valve will continue to direct dome bias pressure until the bank depletes
before the right side takes over.
• The solenoid will not prevent the ow from being supplied no matter which side is in-use and until the system
is fully depleted of gas.
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Page 22
Performance Verication
Use the following test steps to verify the manifold’s functional performance:
1. Remove manifold cover.
2. Before beginning the test, verify following:
• If the manifold is not in use, close the 3/4” source shut-o valve.
• Verify that the two right-side line regulator isolation valves are open and the two left-side line regulator
isolation valves are closed.
3. As a starting point for this procedure, set the manifold to have the right bank as In Use. If the right bank Green LED
is illuminated, proceed to the next step. If the left bank Green LED is illuminated, manually switch the manifold
to the right side by pressing the left switch on the control board.
4. Verify that the right bank Green LED “In Use” and the left bank Yellow “Ready” lights are illuminated.
5. If the manifold is connected to a master alarm panel, verify that the manifold switchover alarm is not activated.
6. If the manifold is equipped with a pilot regulator, verify that its gauge reads 50 PSI.
7. Verify the gauge reading for the “In Use” right bank regulator. If the pressure is not correct, refer to the bank
regulator pressure adjustment procedure.
8. Verify the line pressure gauge reading. If the pressure is not correct, refer to the line regulator pressure
adjustment procedure. Note the reading for later use.
9. Watch the pressure gauge readings of the right side bank regulator and the line pressure gauge for at least ve
minutes. Readings may be slightly higher without vent ow but verify the readings do not continue to increase.
10. Close all cylinders on the right side of the manifold. Use the bleed valve on the line regulator to slowly vent o
pressure until the right bank high pressure gauge drops. Verify that the manifold switches to the left bank when
the right bank high pressure gauge drops below the specied setting of the bank regulator.
11. Verify that only the left bank Green “In Use” LED and the right bank Red “Empty” LED are illuminated.
12. If the manifold is connected to a master alarm panel, verify that the switchover alarm is activated.
13. Close the right-side line regulator ball valves and open the left line regulator ball valves.
22 Amico Pipeline
Page 23
Performance Verication
14. Slightly depress the bleed valve on the left line regulator to create a small ow of gas through the manifold.
15. Verify the pressure gauge reading on the bank “In Use” regulator to see if it is set up as per the specied pressure
setting. If the pressure is not correct, refer to the bank regulator pressure adjustment procedure.
16. Verify that the line pressure gauge reading is the same as in step 9. If the pressure is not correct, refer to the Line
regulator pressure adjustment procedure.
17. Watch the pressure gauge readings on the left bank regulator and the supply line for at least ve minutes to
ensure the readings do not continue to increase.
18. Close all cylinders on the left side of the manifold. Depress the bleed valve slightly so that the left bank high
pressure gauge drops slowly. Verify that the manifold switches to the right bank when the left bank high pressure
gauge drops below the specied setting of the bank regulator.
19. Verify only the right bank Green “In Use” LED and the left bank Red “Empty” LED are illuminated..
20. Slowly open a cylinder on the left side. Verify that the left bank Red “Empty” LED goes out and the left bank Yellow
“Ready” LED illuminates.
21. Open both of the right side line regulator ball valves.
22. Close the left and right side cylinders.
23. Record the pressure readings of the left and right bank cylinder content gauges.
24. Verify after 15 minutes that the pressure reading on the gauges has remained the same.
25. Slowly open all cylinders on both banks of the manifold.
26. Using the switches on the circuit board, switch the manifold to the bank of cylinders with the least pressure.
27. Reinstall the manifold control panel cover.
28. Open the 3/4” source (line) shut-o valve.
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Page 24
Bank Regulator Pressure Adjustment
This procedure should only be performed if the bank regulator pressures are not within acceptable limits during the
Performance Verication Procedure or after installation of a new bank pressure regulator.
Base pressure setting is a mechanical adjustment controlled by the regulator’s internal adjusting spring and without
any dome bias pressure. Recommended settings are listed on page 18 in the Table under the heading of “Intermediate
Pressure - Ready Bank”. After the base pressure has been set, the pressure will be increased by the amount of dome bias
pressure applied.
1. Shut o all cylinders on both banks of the manifold.
2. Close the main supply source valve.
3. Using the control board switches, cycle the manifold from bank to bank to vent residual dome bias pressure.
4. Remove nylon tube then, using a 9/16” wrench, remove pipe (quick connect) adaptor from the dome of bank
regulator(s) to be adjusted.
5. Depress bleed valves on both line regulators to relieve all pressure from the manifold.
6. Slowly open one cylinder on the side of the manifold that needs adjustment. For example, if the right bank
regulator needs adjustment, open one cylinder on the right side of manifold.
7. Slightly vent o the pressure from the bleed valve to create a small ow of gas through the manifold.
8. Using a 7/32” Allen wrench through the hole of the dome/bell, set the bank regulator to the specied setting.
(Intermediate Pressure - Ready Bank).
9. Close cylinder valves.
10. If the other bank regulator also needs to be adjusted, repeat steps 6 through 10.
11. Apply Teon tape, reinstall the pipe (quick connect) adaptor on dome of bank regulator and reinstall the nylon
tube.
12. Slowly open all cylinders on both manifold banks.
13. Open main supply source valve.
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Page 25
Bank Regulator Replacement
Should it be necessary to replace the bank regulator, it can be done while the manifold is in service. However, this should
only be done by qualied technicians experienced in servicing medical equipment.
1. Remove the two top screws at the base of the display board bracket and tilt back the display board assembly for
easy access to the union nuts that secure the bank regulator. (Follow the instructions on the label)
2. Close all cylinders on the side of the manifold where the bank regulator is to be replaced.
3. Ensure that the service bank is the reserve/secondary. If not, cycle the manifold from In Use to Reserve by using
the circuit board control switch to vent residual dome bias pressure.
4. Slowly break the 1-1/8” union(s) allowing gas to slowly vent out from both the inlet and outlet side of the bank
regulator.
5. Remove the nylon tube from the regulator dome.
6. Install the new bank regulator. (May require slight adjustment to the ttings on the regulator to align with the
secure ttings on the manifold).
7. Tighten union nut on the inlet and outlet of the new bank regulator.
8. Reinstall nylon tube.
9. Close the display board assembly and attach the bracket with the two screws.
10. Slowly open cylinders and set the bank regulator’s output pressure as described in Bank Regulator Pressure
Adjustment Procedure.
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Page 26
Line Regulator Pressure Adjustment
This procedure should be performed if the line regulator pressures are not within acceptable limits during the
Performance Verication Procedure or after installation of a new line regulator.
1. With both the bank regulators supplying pressure, open only one ball valve on the inlet and outlet of the line
regulator to be adjusted.
2. Slightly open/depress 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 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 ball valves and ensure the supply line remains open.
Line Regulator Replacement
If necessary, the line regulator 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. Close the two ball valves on the inlet and outlet of the 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 depressing the bleed valve on the side of the
regulator.
4. Ensure the orientation of ttings (direction of gas ow) is the same on the replacement regulator. Install ttings on
the new regulator.
5. Inspect the 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, lightly tighten to ensure the ttings are
secure. NOTE: do not over-tighten unions, as it is an O-ring seal.
8. Open the ball valves and set the line regulator’s output pressure as described in the Line Regulator Pressure
Adjustment procedure.
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Page 27
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 the two top screws at the base of the display board bracket and tilt back the display board assembly.
2. Disconnect the power supply.
3. Remove the screws located on the circuit board, detaching it from the front plate. Note the orientation of the old
circuit board and remove the wires 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. Turn the 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.
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Page 28
Cylinder 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 cylinder valves on all empty cylinders.
3. Disconnect pigtails from cylinder valve outlets, using an appropriate wrench.
4. Place protective caps over the cylinder valves of the empty cylinders and move them aside.
5. Remove protective caps of the full cylinders. Visually inspect the cylinder valves for dust, grease or oil.
6. Using a clean (lint free) cloth, wipe each cylinder valve outlet clean. Do not use your ngers.
7. Standing to one side, “crack” each cylinder valve by briey opening and closing to blow out any dust. Make sure
they are pointing away from you and other personnel.
8. Connect the pigtails to the cylinder valve outlets and tighten the nut with an appropriate wrench.
9. Very S-L-O-W-L-Y open the cylinder valve on the cylinder closest to the control cabinet. Watch the bank pressure
display on the front of the cabinet to make sure the pressure rises slowly to the full cylinder pressure reading. Wait
one full minute.
10. Proceed to S-L-O-W-L-Y open the remaining cylinder valves one at a time.
WARNING: High pressure 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 cylinders. Failure to comply with this
procedure may be hazardous.
WARNING: Fire Hazard. DO NOT permit smoking or any other source of ignition in the 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.
28 Amico Pipeline
Page 29
Ordering Information
DL = Dome Loaded (NFPA)
Manifold Cabinet:
A = Analog
HH = High Pressure
HHH = Heaters
Header-Bar Assembly:
The Letters “YY” Dene the Type of
Header-Bar Assembly:
“TS” = Straight c/w Stainless Pigtails
“TC” = Straight c/w Copper Pigtails
“XS” = Staggered c/w Stainless Pigtails
“XC” = Staggered c/w Copper Pigtails
M3A-DL-HH-L-XXX
The Letter “L” Denes
the Language
U = English (NFPA)
S = Spanish
M2-HBYY-XXL-XXX
The Letters “XXX” Dene the
Type of Gas:
Oxygen = OXY
Nitrogen = NIT
Medical Air = AIR
Carbon Dioxide = CO2
Nitrous Oxide = N2O
The Letters “XX” Dene the Number
of Cylinders:
2 x 2 use 04
4 x 4 use 08
Wall Bracket for Header-bar Assembly: M-X-HB-WLBRKIT
CONTROL CABINET PARTS LIST
DESCRIPTION MODEL NUMBER
Pressure transducer for Oxy, N₂O, Air, CO₂, & Nit
Line pressure regulator for Heavy Duty Manifolds (Left)
Line pressure regulator for Heavy Duty Manifolds (Right)
Line pressure regulator for Heavy Duty Manifolds (For NIT, Left)
Line pressure regulator for Heavy Duty Manifolds (For NIT, Right)
Operating pressure regulator for HD Manifolds (Left)
Operating pressure regulator for HD Manifolds (Right)
Repair Kit Line pressure regulator - HD
Repair Kit Operating pressure regulator
M2-X-MAN-07B
M2-X-MAN-42E-L
M2-X-MAN-42E-R
M2-X-MAN-42E-LN
M2-X-MAN-42E-RN
M3-X-MAN-18DL-L
M3-X-MAN-18DL-R
M2-REG700-RK
M2-REG250-RK-HP
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Page 30
Ordering Information
CONTROL CABINET PARTS LIST
Intermediate check valve for all gases
Operating pressure relief valve Nitrogen
Operating pressure relief valve Oxy, N2O, Air & CO2
Line Pressure relief valve for Nitrogen
Line pressure relief valve for Oxy, N2O, Air & CO2
Plug & Chain assembly - Air
Plug & Chain assembly - CO2
Plug & Chain assembly - N2O
Plug & Chain assembly - Nit
Plug & Chain assembly - Oxy
Copper pigtail c/w Check valve - Air
Copper pigtail c/w Check valve - CO2
Copper pigtail c/w Check valve - N2O
Copper pigtail c/w Check valve - Nit
Copper pigtail c/w Check valve - Oxy
Stainless pigtail c/w Check valve - Air
Stainless pigtail c/w Check valve - CO2
Stainless pigtail c/w Check valve - N2O
Stainless pigtail c/w Check valve - Nit
Extension wall support
High pressure inlet valve
Manifold Power Supply
Solenoid Valve
DESCRIPTION MODEL NUMBER
M-X-MAN-33B
M-X-IN-72W-350
M-X-IN-72W-350
M-X-IN-72W-225
M-X-IN-72W-075
M-X-HB-NUT-AIR
M-X-HB-NUT-CO2
M-X-HB-NUT-N2O
M-X-HB-NUT-NIT
M-X-MAN-36
M-X-HB-PTC-AIR
M-X-HB-PTC-CO2
M-X-HB-PTC-N2O
M-X-HB-PTC-NIT
M-X-HB-PTC-OXY
M-X-HB-PTS-AIR
M-X-HB-PTS-CO2
M-X-HB-PTS-N2O
M-X-HB-PTS-NIT
M-X-HB-WLBRKIT
M-X-HB-HPVLV-A
M2-X-POWER
M3-X-MAN-SOLVLV
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Page 31
Appendix A
Manifold Internal Layout
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Page 32
Appendix B
Piping Schematic Diagram
LEFT HAND BANK
CYLINDER PRESSURE
Item
Description
1
Pig-Tail check valve
2
Cylinder valve
3
TO
VENT TO
OUTSIDE
7
4
3
HP
LB
PIPELINE
DISTRIBUTION
SYSTEM
9
8
10
6
12 12
13
11
11
6
7
6
HP
RB
High pressure inlet valve
4
Pressure Transducer
5
Operating pressure regulator
6
Check valve
Line pressure regulator
7
8
2-Wayvalve
Line pressure relief valve
9
Operating pressure relief valve
10
11
Bleed Valve
12
Operating pressure gauge
13
Pilot Regulator For Nitrogen
CONTROL CABINET
4
RIGHT HAND BANK
3
CYLINDER PRESSURE
LEFT
BANK
5
5
RIGHT
BANK
PIPING SCHEMATIC DIAGRAM
DUAL LINE REGULATORS (NFPA)
1
2
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Page 33
Appendix C
Wiring Schematic Heater Units
Power Supply
Heater Cartridge
Wires
Heater Cartridge
(Inside Inlet Pressure Block)
Inlet Pressure
Block
Reset Switch
Reset Switch
Heater Cartridge
(Inside Inlet Pressure Block)
Inlet Pressure
Block
The Heaters normally switch on when the temperature drops below 24°C or 75°F. If the temperature exceeds 65-75°C
or 160-175°F, the Heater reset switch will trip and the Heaters will automatically switch o. To reset the Heaters, remove
the Heater covers and press the red button on the reset switch to activate. When the Heaters are in use or switched on,
it will draw up to 3 amps of current. The Heater Cartridge is 200 watts (each side). Normally both sides do not switch on
together, it depends on the ow of gas or climatic conditions.
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Page 34
Appendix D
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
External Power
Supply
Current Draw: 1 Amp. Max.
34 Amico Pipeline
Page 35
Appendix E
Line
Sensor
Line Display Board
Control Cabinet Wiring Diagram
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Page 36
Appendix F
Staggered Header Bar
36 Amico Pipeline
Page 37
Appendix G
Straight Header Bar Setup
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Page 38
Appendix H
Optional Header Bar Setup
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Appendix I
Standard Manifold Flow Rates
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Page 40
www.amico.com
Amico Pipeline | www.amico.com
85 Fulton Way, Richmond Hill
Ontario, L4B 2N4, Canada
Toll Free Tel: 1.877.462.6426
Toll Free Fax: 1.866.440.4986
Tel: 905.764.0800
Fax: 905.764.0862
Email: info@amico.com
APEINSTALMAINTDLMANIV1.1 01.07.2014
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