Manifold OM

MICROPROCESSOR BASED

DIGITAL MANIFOLD

ALERT- 2

Installation and Maintenance Manual v5.0

Table of Contents

USER RESPONSIBILITY ..................................................................... 4

INTRODUCTION ................................................................................. 5FEATURES ..................................................................................... 5

DESCRIPTION OF THE MANIFOLD .................................................... 6SHIPMENT DETAILS ....................................................................... 6THE MANIFOLD ENCLOSURE......................................................... 6THE COLLAPSABLE BACK BRACKET ............................................ 6

DESCRIPTION OF PARTS .................................................................. 7COMMON TO ALL MANIFOLDS ....................................................... 7

SHUTTLE-VALVE ASSEMBLY (LOW PRESSURE) .................................7

SHUTTLE-VALVE ASSEMBLY (HIGH PRESSURE) .................................8

PRESSURE REGULATORS (OPERATING & LINE) ................................8

PRESSURE RELIEF VALVES ...............................................................9

PRESSURE RELIEF VALVE CHART .....................................................9

PRESSURE TRANSDUCER .................................................................9CONTROL COMPONENTS ................................................................. 10

WARNING SYSTEM COMPONENTS .................................................... 10

OPERATING ALARM SYSTEMS ..................................................... 11SAFETY FEATURES ...................................................................... 11

INSTALLATION .................................................................................. 13RECEIPT AND LOCATION ............................................................. 13

ASSEMBLY INSTRUCTIONS .......................................................... 13

TESTING FOR LEAKAGE .................................................................. 15FINAL TESTING ............................................................................. 16NORMAL OPERATING PROCEDURE.............................................. 18

FIELD ADJUSTMENTS ...................................................................... 19

MAINTENANCE .................................................................................. 24GENERAL ...................................................................................... 24

AMICO CONTROL CABINET ................................................................ 24

CYLINDER EXTENSION BARS ............................................................ 24

PERIODIC STANDING PRESSURE TEST ............................................ 25

A l e r t - 2 S e r i e s

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SHUTTLE VALVE PREVENTATIVE MAINTENANCE ............................... 25

TROUBLE SHOOTING GUIDE ........................................................... 27TABLE OF ERROR CODES ............................................................ 30

CYLINDER CHANGING PROCEDURES ............................................. 31

ORDERING INFORMATION ............................................................... 32CONTROL CABINET PARTS LIST .................................................. 33

APPENDIX A - MANIFOLD INTERNAL LAYOUT................................. 34

APPENDIX B - LOW PRESSURE SHUTTLE VALVE.......................... 35

APPENDIX C - HIGH PRESSURE SHUTTLE VALVE ......................... 36

APPENDIX D - WIRING SCHEMATIC HEATER UNITS ....................... 38

APPENDIX E - PIPING SCHEMATIC DIAGRAM-NFPA........................ 39

APPENDIX F - FRONT VIEW ............................................................. 40

APPENDIX G - TOP VIEW ................................................................. 41

APPENDIX H - SUPPORT BRACKET HOLE PATTERN LAYOUT....... 42

APPENDIX I - ELECTRICAL WIRING DIAGRAM ................................ 43

APPENDIX J - CONTROL CABINET WIRING DIAGRAM .................... 44

APPENDIX K - LOW PRESSURE SHUTTLE VALVE.......................... 45

APPENDIX L - HIGH PRESSURE SHUTTLE VALVE .......................... 46

APPENDIX M - PIPING SCHEMATIC - SINGLE LINE.......................... 47

APPENDIX N - STANDARD MANIFOLD FLOW RATES...................... 48

APPENDIX O - REGULATOR REPAIR CENTERS .............................. 49

Model Number of this Manual: M2-MAN-ENG JUNE-2000

M i c r o p r o c e s s o r D i g i t a l M a n i f o l d

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USER RESPONSIBILITY

The information contained in this Installation and Maintenance Manual, per-tains only to the ALERT-2 microprocessor based digital manifold. This prod-uct will perform in conformity with the descriptions contained in this manual,when assembled, operated, maintained and serviced in accordance with theinstallation instructions provided.

The manifold must be checked periodically. Parts that are broken, missing,worn, distorted or contaminated, must be replaced immediately. Should suchrepair or replacement become necessary, please contact Amico Corporationor their distributors.

All manifolds should not be repaired, or altered without prior written or verbalapproval of Amico Corporation or it’s distributors. Failure to comply will voidall warranty on the manifold.

Statements in this manual preceded by the words WARNING, CAUTION,DANGER and NOTE are of special significance. Please read these sectionscarefully.

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 equipmentor to prevent serious injury and/or death.


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INTRODUCTION

The AMICO digital medical gas manifold (ALERT-2) incorporates the latestmicroprocessor technology for the distribution and monitoring of medicalgases. The manifold has been designed to provide user flexibility andreliability. This manual will enable the customer to install, use and maintainthe manifold properly.

The amount of medical gas contained in the left or right banks, is dis-played on the face of the manifold cabinet. A digital display, with large redLED’s for clear visibility is provided to show the cylinder bank pressure inuse and cylinder bank pressure in reserve at all times.

Under normal operating conditions, the green LED will be illuminated onthe Primary In Use side. The Reserve bank will have an Amber LEDilluminated on the Bank Ready side. If the gas cylinder pressure de-pletes on the primary side, an automatic switch-over will occur, renderingthe reserve side in use to be illuminated and activated.

An alarm condition will occur when switch-over takes place, sending asignal to a master alarm, then causing the Red LED Bank Empty to beilluminated. This will inform the hospital personnel that the reserve side isin use and the empty cylinders need replacement.

FEATURES INCLUDE:

� Fully automatic self-contained shuttle-valve, with no electrical powerrequired for switching.

� Input power 110 VAC to 240 VAC, 50 to 60 Hz.

� Microprocessor based control panel incorporates six LED’s andilluminated digital LED display readable even in poor lighting condi-tions.

� Error message display for ease of maintenance.

� Pressure transducer for monitoring of cylinder pressure.

� Switch selectable (psi / kPa / BAR).

� Two limit switches for positive indication of bank in use.

� CGA gas specific header bar with integral check valves and cylinderpigtail assemblies.

� Dual line pressure regulators.

� High pressure header isolation valves.

� Manifold complies with NFPA-99 and CSA Z305.1


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DESCRIPTION OF THEMANIFOLD

SHIPMENT DETAILS

When you receive an ALERT-2 series manifold from Amico Corporation, thepackage will consist of one Manifold Cabinet (tested and fully assembled),two header bar assemblies with pigtails (Amico’s standard pigtail is copper)and a collapsable back bracket.

THE MANIFOLD ENCLOSURE

The Manifold enclosure contains the Switching Power Supply (90 to 260VAC)with a built-in fuse and terminal blocks. The enclosure on a standard manifoldis NEMA-1 (General purpose applications only). The standard cabinet MUSTNOT be mounted outdoors. An optional NEMA-4 (Water tight) enclosuremust be used.

The Manifold also has a hinged door that has a pre-assembled circuit boardlocated on the front of the enclosure. This design will reduce installation timeand eliminate the risk of improper installation, since all the components of themanifold are connected and tested at the factory.

THE COLLAPSABLE BACK BRACKET

The collapsible back bracket is designed to be shipped with the manifold,without taking up space. The bracket will position the manifold cabinet 12”from the wall, for double cylinder spacing.


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DESCRIPTION OF PARTS

The ALERT-2 manifold is divided into (4) main sections:

COMMON TO ALL MANIFOLDS

1. SHUTTLE VALVE ASSEMBLY

The shuttle valve assembly has been designed to facilitate the automaticswitch-over from bank to bank. The shuttle valve is the heart of the mani-fold and forms the centre of the control apparatus to ensure uninterruptedflow of gas without change in the delivery pressure.

When the operating bank pressure falls to a predetermined level, thedifference in pressures acting on either side of the shuttle valve causeschange-over to the reserve cylinder bank.

Amico has two different types of shuttle valves:

Diaphragm type (LOW Pressure)

This shuttle valve consists of a machinedbrass body, in two halves. There are twothreaded inlet connections and two outletconnections (nut and nipple CGA-540).

The shaft assembly consists of a stainlesssteel shaft and a nylon reinforced neo-prene diaphragm, which is sandwichedbetween two seat plates. Neoprene seatsare held against these plates by seatwashers secured by nuts. The shaft assembly fits into the chamberformed by the body halves, which bolt together and squeeze thediaphragm, sealing one side from the other.

The shaft is free to move from side to side with the diaphragm flexing backand forth. When pressure is introduced from one side, the shaft assemblytakes up it’s initial position, with the pressurized side open. As the samepressure is allowed into the closed side, the shaft remains in the sameposition, since the pressure acts on a reduced diaphragm area, whichdoes not provide sufficient force to cause switch-over.

When the operating side pressure falls to a specific pressure, the force onthe closed side overcomes the force on the open side and the shuttlingoccurs, changing the supply from one bank to the other. The change inshaft positions is detected by limit switches, which signals the microproc-essor that change-over has occurred.


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Piston type (HIGH Pressure)

The high pressure shuttle valve used for Nitrogen service is basically thesame as the low pressure one, except for the replacement of the diaphragmshaft assembly by a piston shaft assembly.

Instead of squeezing a diaphragm between the two body halves toform the two pressure chambers, the sides are separated by an O-RING seal around the circumference of a piston. The piston shaftassembly slides back and forth in the cylinder bore, as shuttlingoccurs.

In both types of shuttle valves, the gas is delivered to them from oneof the two operating pressure regulators upstream. Once passingthrough the shuttle valve, the gas goes to one of the line pressureregulators, which is capable of maintaining a constant deliverypressure despite the fluctuating inlet pressure caused as one bankbecomes empty and the next takes over.

2. PRESSURE REGULATORS

There are two types of regulators in the Amico manifold: the Operating pres-sure regulator and the Line pressure regulator. Both types conform to NFPA99 and CSA Z305.1.

Operating (Source) Regulators

There are two operating regulators on every manifold, one for theleft bank and one for the right bank. The regulators should be set atthe time of installation (factory preset to “0”). For Oxygen, NitrousOxide, compressed Medical Air and Carbon Dioxide service, thetwo operating regulators should be set at 150 psig [1034 kPa]. ForNitrogen service, the regulators are to be set at 275 psig [1896kPa].

Line Regulators

There are also two line regulators on every manifold. The line regulator iscapable of maintaining a constant dynamic delivery pressure at the maxi-mum design flow rate of the system (factory preset to “0”). For Oxygen,Nitrous Oxide, compressed Medical Air and Carbon Dioxide service, thetwo line regulators should be set at 55 psig [379 kPa]. For Nitrogen serv-ice, the regulators are to be set at 170 psig [1172 kPa].


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3. PRESSURE RELIEF VALVES

Pressure relief valves are installed downstream of all pressure regulatorsand are set at no more than 50% above the setting of the pressure regula-tor located immediately upstream. All pressure relief valves are capable offully relieving the pressure at the set point and are upstream of any shut-offvalve.

All pressure relief valves in the manifold have piping connections to allowfor connection of vent lines to outside facility.

Relief pressure settings vary with gas service as follows:

4. PRESSURE TRANSDUCER

Pressure transducers monitor the supply pressure of a gas coming intothe manifold cabinet. The gas pressure is converted into a signal that istransferred onto the digital LED front display. There are two transducers inthe manifold cabinet, one for the left and one for the right pressure banks.

!�!"�

4 �

�1 �1

!�"��

!�"��

#�#�

Line pressureRelief valve

Oxygen

75 psi[517 kPa]

75 psi[517 kPa]

75 psi[517 kPa]

75 psi[517 kPa]

200 psi[1379 kPa]

200 psi[1379 kPa]

200 psi[1379 kPa]

200 psi[1379 kPa]

225 psi[1551 kPa]

300 psi[2069 kPa]

NitrogenCarbonDioxide

NitrousOxide

MedicalAir

Intermediate pressureRelief valve


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CONTROL COMPONENTS

The Amico manifold qualifies as a “Cylinder System Without ReserveSupply” as classified in NFPA 99, Clause 4-3.1.5. This is one category ofthe broader classification “Central Supply System” which encompassesmany types of sources of supply to nonflammable medical gas pipingsystems.

As such, the Amico manifold is comprised of two banks of cylinders whichalternately supply the pipeline, each having various control components.When the primary bank is exhausted, the secondary takes over automati-cally as a normal operating procedure of the equipment.

WARNING SYSTEM COMPONENTS

Forming an integral part of the Amico manifold control cabinet are anumber of components whose function is to give continuous visual infor-mation as to the state of operation of the system.

1. Bank Change-Over Indicators

LED’s on the face of the manifold are controlled by the microprocessor.The microprocessor interprets the various input signals (pressure in gascylinders and bank switch-over), converting the information into a digitaldisplay.

The pressure coming into the manifold is measured by the pressuretransducer. The transducer sends a signal to the microprocessor whichthen converts the signal to a digital display on the left or right bank.

As the shuttle valve changes position (pressure controlled, not microproc-essor controlled) from left bank to right bank, the limit switch is activated.This causes a signal to be sent from the limit switch to the microproces-sor. The signal controls the status LED’s of the left or right bank (in use,ready, empty) and relay for remote monitoring.

IN USE

SUPPLY

��

�� LEFT BANK RIGHT BANK

IN USE

READY

COMPRESSED GAS MANIFOLD

READY

EMPTY EMPTYPUSH

TOTEST

Corporation


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OPERATING ALARM SYSTEMS

Operating alarm systems are mandatory according to NFPA 99. Amicodoes supply a complete range of operating alarm units which can be usedin conjunction with the Amico manifold, to provide the required visual andaudible signals, in suitable locations, when change-over from the primarysupply to the secondary supply occurs.

The manifold control cabinet contains the required circuitry to send asignal to the alarm unit when a bank is empty and change-over occurs.The normally closed internal circuitry is designed to alarm when there isan open circuit. The depletion of a bank triggers a relay, which renders thealarm circuit open and initiates the alarm signal.

SAFETY FEATURES

Gas Service Identification

Amico manifolds are clearly labelled for the gas that they are intended tobe used for. A large nameplate, indicating the appropriate gas is attachedon the cabinet door. The two pipes extending from the top of the cabinet,one for main line pressure and one for the operating pressure relief, arelabelled.

Function Identification

The indicator LED’s on the door are clearly marked to explain their func-tion.

Cylinder Connections

The Amico manifold is designed to assure that only cylinders containing

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the proper gas, can be connected to it. All cylinder extension bar connec-tions as well as pigtail hose assemblies, comply with CGA Standard B96,“Compressed Gas Cylinder Valve Outlet and Inlet Connections”.

UL Listing

The Amico manifold is UL Listed (ULc SA9906)


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INSTALLATION

RECEIPT AND LOCATION

The Amico manifold should be carefully examined upon receipt. If anydamages are found, a claim should be filed with the transport companyand Amico Corporation.

Any authorized dealers and distributors should also be notified immedi-ately.

ASSEMBLY INSTRUCTIONS

Wall Mounting Instructions

The Amico manifold is shipped in a semi-assembled condition tofacilitate packaging and installation.

Position the collapsable manifold support wall bracket onto the wall.

Mark the holes, drill and place suitable anchors (not supplied by Amico),into the supporting wall (refer to “Appendix G”). Bolt the manifoldsupport into position.

Attach manifold control cabinet to the support using supplied bolts. Thecabinet attaches to the front of the wall bracket.

Cylinder Bank Installation Instructions

Position the wall brackets, if required, to support the extension bars andbolt in place.

Connect the two high pressure inlet valve / header bar assemblies to

CAUTION: This section contains important information necessary forproper installation of the cylinder banks. Read it carefully before installingcylinder banks.


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the CGA connections on either side of the cabinet.

Secure the cylinder extension bar to the support using the U-bolts sup-plied as part of the assemblies.

Remove the plug and chain assembly on each outlet connection on thecylinder extension bar. Attach the cylinder pigtails to the header bar con-nections, while insuring the check valves are operating in the properdirection.

When the medical gas piping system has been tested in accordance withPart 4-5 Testing of NFPA 99, the manifold can then be connected to it.

The outlet pipes leading from the Amico control cabinet should be con-nected to their respective pipeline system connections. The connection tothe relief valves should be made with a union (supplied by others) tofacilitate change if required.

As the threaded joints are installed, an appropriate sealing compound thatis suitable for the gas being transmitted shall be used.

WARNING: To avoid contamination with particulate or other potential haz-ardous materials, keep pigtails in plastic wrapping until such time as connec-tion to gas cylinder is planned.

WARNING: If downstream joints near the cabinet outlets are to be silverbrazed, special attention must be given not to overheat the copper tubingsince this may alter the sealing compound used in the threaded joints leadingfrom the control cabinet.


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TESTING FOR LEAKAGE

The following instructions apply to leak testing to be preformed on thejoints made during assembly and connection of the Amico manifold andnot to tests previously made on the piping system.

The connections inside the Amico control cabinet have been inspectedat the manufacturing plant and DO NOT require leak testing. In order todetermine whether any leaks exist between cylinder extension barsections, or at the pipeline connections, the system must be pressu-rized using either oil-free dry air or oil-free dry nitrogen.

In the case of medical Oxygen, Nitrous Oxide or Carbon Dioxide Amicomanifolds, the actual service gases ARE NOT suitable for leak testingdue to their inherent dangerous properties. Leak testing must be per-formed using either oil-free dry air or oil-free dry nitrogen. In the case ofeither a Medical Air or a Nitrogen Amico manifold, the actual service gasmay be used to perform the leak tests as follows:

1. Connect a cylinder of the manifold service gas to the end connec-tion on each end of the cylinder extension bar using the coppercylinder connection hose assemblies (pigtails) supplied.

2. Make sure all other outlets are capped with the plug and chainassemblies supplied.

3. Make sure that the high pressure inlet valves of each bank arefully OPENED.

4. “Slowly” open the two cylinder valves, closest to the cabinet, oneat a time, to pressurize the cylinder extension bar, to pressurizethe pipeline.

5. All outlets from the pipeline, downstream of the manifold shouldbe closed and thus there should be no flow from the manifold.

6. Check for leaks at all cylinder extension joints and at the jointswhere the pipes were connected to the pipeline, using a commer-cial leak detector which is compatible with oxygen.

7. If any leaks are found, the system must be depressurized bybleeding through a convenient pipeline outlet and the faulty con-nections must be repaired.

8. The threaded pipe cylinder extension bar connections may betightened one more turn, maintaining the horizontal location of thecylinder adapters, or a further application of an oxygen servicethreaded sealant may be required.

9. If the brazed pipeline connections leak, they must be removed,cleaned and then re-brazed following the proper technique. Allrepaired joints must be pressure tested as previously.


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FINAL TESTING

Purging and analysing of the complete medical gas piping systemshall be carried out in accordance with NFPA 99, 4-5 Testing.

ELECTRICAL HOOK-UP TO CLOSED CIRCUIT ALARMS

Once the Amico manifold has been installed and the source ofsupply for the medical gas piping is completed, the electricalconnections can be made. The input power to the Amico manifoldis 110-240VAC, 50-60Hz.

Connections from the Amico manifold to the Amico Master Alarmmust be made from terminals marked C and NC, to the appropri-ate terminals (RESERVE IN USE) on the Master Alarm.

CHECK-OUT OF INDICATOR FUNCTIONS

Introduce power to the Amico control cabinet then, with thehigh pressure inlet valves outside the cabinet both

DANGER: Electrical shock hazard. Ensure that the main power source isturned off during the connection of the exterior power supply.

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OPENED, S-L-O-W-L-Y open the cylinder valves on thecylinders closest to the control cabinet. After one minute,S-L-O-W-L-Y open all other cylinder valves. A pipeline outletdownstream of the manifold cabinet such as a purge valveor terminal valve should be opened and vented safely, toproduce a dynamic flow condition for the indicator functioncheck-out.

Since one side was opened first, the bank of cylinders firstopened, becomes the operating (primary) supply. Whenboth banks are open, check the pressure to ensure that thecorrect pressure is indicated. The left hand and right handBank Pressures should both read full cylinder pressurewhile the line pressure should be 55 psig [379 kPa] for allmanifolds except for Nitrogen, 170 psig [1172 kPa].

Check the indicator LED’s for proper functioning. Only oneGreen LED, on the side which had it’s valve opened first,should be lit and the other side should have an Amber LEDlit.

Close the cylinder valve on the primary bank and watch theindicator LED’s to ensure proper functioning. The primarybank pressure should fall while the secondary and linepressures stay constant. When the primary pressure fallsto approximately 90 psig [621 kPa] for all gases exceptNitrogen 195 psig [1345 kPa], there should be a distinctsound of the shuttle valve switching over to the secondarysupply. When the switching occurs, the line pressureshould remain constant and the Green LED’s should re-verse, with only one of them lit. The Red LED “Bank Empty”should become lit on the bank empty side.

With the Amico manifold wired up to the Amico MasterAlarm, the change over from primary to secondary supplyshould cause an audible alarm buzzer and the appropriateindicator LED on the Master Alarm to illuminate.

RE-SETTING REGULATORS

Press the bleed valve until gas emptys from the regulator.


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NORMAL OPERATING PROCEDURE

Normal operating procedure for the Amico manifold entailsconnecting of the proper medical gas to all cylinder exten-sion bar outlets via the appropriate copper cylinder connec-tion hose assemblies.

With the high pressure inlet valves open, S-L-O-W-L-Yopen the cylinder valves on the cylinders nearest the inletvalves on both banks. After waiting at least one full minute,allow time for the dissipation of generated heat,S-L-O-W-L-Y open all the rest of the cylinder valves, one ata time.

The bank that was pressurized first will become the primarybank automatically. The High pressure inlet valvesshould be left open under normal operating condi-tions. In an emergency, these valves can be closed quickly.

Once the header bars have been pressurized, the Amicomanifold is operating, since all regulators and controlequipment has been set in CHECK-OUT OF INDICATORFUNCTIONS section. When the primary supply bank isexhausted and switch-over to the secondary bank occurs,the operating alarm unit notifies the person responsible, thatthe cylinders on the primary bank need replacing.

To replace the empty cylinders with full ones, keep the highpressure inlet valves open throughout this procedure. Closeall empty cylinder valves and remove them. Attach fullcylinders in their place, then S-L-O-W-L-Y open the cylindervalve nearest the inlet valve and wait for at least one fullminute before S-L-O-W-L-Y opening the remaining cylindervalves, one at a time.

The introduction of full cylinder pressure into the cabinet’smain bar energizes the appropriate control pressure switchwhich causes the Red LED “Bank Empty” to go out. TheAmico manifold is then ready for the next switch-over.Please note for *Liquid by Liquid* manifolds the “Testor Reset” button must be pressed to switch from“Empty Mode” to “Ready Mode” after changing thecylinders.

NOTE:

At the instant shuttling occurs, a small amount of gas will leakfrom the shuttle valve, shaft end. This is normal and shouldstop when the shaft reaches the full extent of its travel. If

WARNING: Fire Hazard. DO NOT permit smoking, or any other sourceof ignition in area where the manifold is located, or near the reliefvalve vent outlet. Be certain that all connections are free of dirt,grease and oil. These substances burn with great intensisty in air,enriched with oxygen, or nitrous oxide and some gas mixtures.


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Units of Measure Dip Switches

Dip Switch S3 is used to identify the units of measure on the manifold(psi/bar/kPa).

PSI mode:

Set Dip switches # 1 & 2 to the ON position.

BAR mode:

Set Dip switches # 1 & 2 to the OFF position.

KPA mode:

Set Dip switch # 1 to the OFF position, and # 2 to the ON position..

FIELD ADJUSTMENTS.

ON

S3

PSI

1 2 3 4 5 6 7 8

ON

S3

BAR

1 2 3 4 5 6 7 8

ON

S3

KPA

1 2 3 4 5 6 7 8


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High Pressure mode for Amico Model #: M2-X-MAN-07B


This will enable gas cylinders to be attached to the left bank of the manifold.

Liquid Mode for Amico Model #: M2-X-MAN-07C

Set Dip switch # 3 to the OFF position.

Set Dip switch # 4 to the ON position.

This will enable liquid cylinders to be attached to the left bank of the manifold

Converting High Pressure to Liquid

In order to change a High Pressure side into a Liquid side, you require to dothe following:

(1) Remove High Pressure regulator and HP transducer from the Left supplybank.

(2) Remove Low Pressure shuttle-valve and replace it with a High pressureshuttle-valve.

(3) Add Liquid regulator and liquid transducer to the left supply bank.

(4) Set Dip Switch # 3 to the OFF position, and Dip Switch # 4 to the ONposition.

Dip Switches # 7 and 8 are not used. Leave in the OFF position.

DIP SWITCH SETTINGS LEFT TRANSDUCER

S3

HP Mode

3 4 5 6 7 8Liq*HP Mode

Left HP Sensor Select

Liquid ModeON

1 2

S33 4 5 6 7 8

ON

1 2S3

3 4 5 6 7 8

ON

1 2


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DIP SWITCH SETTINGS RIGHT TRANSDUCER

Liq*HP Mode

Right HP Sensor Select

Liquid Mode

S3

HP Mode5 6 7 83 4

ON

1 2

S3

5 6 7 83 4

ON

1 2

S3

5 6 7 83 4

ON

1 2

High Pressure mode for Amico Model #: M2-X-MAN-07B


This will enable gas cylinders to be attached to the left bank of the manifold.

Liquid Mode for Amico Model #: M2-X-MAN-07C

Set Dip switch # 5 to the OFF position.

Set Dip switch # 6 to the ON position.

This will enable liquid cylinders to be attached to the left bank of the manifold

Converting High Pressure to Liquid

In order to change a High Pressure side into a Liquid side, you require to dothe following:

(1) Remove High Pressure regulator and HP transducer from the Left supplybank.

(2) Remove Low Pressure shuttle-valve and replace it with a High pressureshuttle-valve.

(3) Add Liquid regulator and liquid transducer to the left supply bank.

(4) Set Dip Switch # 5 to the OFF position, and Dip Switch # 6 to the ONposition.

Dip Switches # 7 and 8 are not used. Leave in the OFF position.


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DIP SWITCH SETTINGS FOR AIMS ADDRESS

Device = Manifold and Alarm

Dip Switch S1 and S2 are used for Manifold IdentificationAddress (used with interfacing the manifold to a PC [AIMS]).

NOTE: Each device must have a unique address. Choosefrom the following list below.

Dip Switch Setting (S2) Dip Switch Setting (S2)

8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1Do Not Use on on on on on on on on Device #30 on on on off off off off onDevice #1 on on on on on on on off Device #31 on on on off off off off offDevice #2 on on on on on on off on Device #32 on on off on on on on onDevice #3 on on on on on on off off Device #33 on on off on on on on offDevice #4 on on on on on off on on Device #34 on on off on on on off onDevice #5 on on on on on off on off Device #35 on on off on on on off offDevice #6 on on on on on off off on Device #36 on on off on on off on onDevice #7 on on on on on off off off Device #37 on on off on on off on offDevice #8 on on on on off on on on Device #38 on on off on on off off onDevice #9 on on on on off on on off Device #39 on on off on on off off offDevice #10 on on on on off on off on Device #40 on on off on off on on onDevice #11 on on on on off on off off Device #41 on on off on off on on offDevice #12 on on on on off off on on Device #42 on on off on off on off onDevice #13 on on on on off off on off Device #43 on on off on off on off offDevice #14 on on on on off off off on Device #44 on on off on off off on onDevice #15 on on on on off off off off Device #45 on on off on off off on offDevice #16 on on on off on on on on Device #46 on on off on off off off onDevice #17 on on on off on on on off Device #47 on on off on off off off offDevice #18 on on on off on on off on Device #48 on on off off on on on onDevice #19 on on on off on on off off Device #49 on on off off on on on offDevice #20 on on on off on off on on Device #50 on on off off on on off onDevice #21 on on on off on off on off Device #51 on on off off on on off offDevice #22 on on on off on off off on Device #52 on on off off on off on onDevice #23 on on on off on off off off Device #53 on on off off on off on offDevice #24 on on on off off on on on Device #54 on on off off on off off onDevice #25 on on on off off on on off Device #55 on on off off on off off offDevice #26 on on on off off on off on Device #56 on on off off off on on onDevice #27 on on on off off on off off Device #57 on on off off off on on offDevice #28 on on on off off off on on Device #58 on on off off off on off onDevice #29 on on on off off off on off Device #59 on on off off off on off off


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TERMINATION

The last device needs to be terminated. Set S1 as follows:

Set Dip Switch # 1 to the OFF position.




The last device in the link should be set as:



Set Dip Switch # 3 to the ON position.

Set Dip Switch # 4 to the ON position.

ON

S1 1234

ON

S1 1234


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MAINTENANCE

GENERAL

The tests and inspections specified below apply only to the Amicomanifold and not to the medical gas pipeline system as a whole.They are intended to help ensure the proper operation of themanifold and not to be interpreted as repair instructions. Faultfinding and repair procedures are given in the Trouble Shootingsection of this manual.

AMICO CONTROL CABINET

Control equipment should be inspected and tested according tothe following schedule:

1. Pressure Regulator:

A. Observe and record line pressure at least daily.

B. Test for external leaks at least semiannually.

C. Switch line regulators monthly.

2. Pressure Relief Valves:

A. Determine the pressure at which relief occurs at least annuallyand compare with the requirements of “Clause 4-3.1.8.5. ofNFPA 99”.

3. High Pressure Inlet Valves (Manifold Hand Valves):

A. Inspect semiannually and test for external leakage and tight-ness of shut-off.

4. Pressure Transducers:

A. Inspect annually and test for external leakage.

5. Ensure that all electrical switches and LED’s are maintained inproper working condition.

CYLINDER EXTENSION BARS

The following components shall be inspected semiannually asindicated:

1. Test check valves of copper pigtail assemblies for proper closure.


P a g e : 2 5

leakage persists at the shaft ends, it could indicate a leakingcheck valve at the shuttle valve outlet. It could also indicatea leaking shaft O-ring or a leaking seat.

2. Inspect pigtail assemblies for apparent damage and threaddamage to cylinder connections, replacing all damaged pigtailsimmediately.

NOTE: Replace ALL pigtails after 5 years service.

The cylinders and the operating pressure regulators of a nitrousoxide or a carbon dioxide supply system shall be observed dailyduring peak demand periods to determine whether they showfrosting or condensation on the surface.

Where this is evident, the system shall be further inspected forevidence of leaks. Should excessive condensation or frostingoccur, it may be necessary to increase manifold capacity byadding additional cylinders or installing a built in heater kit.

This is an extra option provided with the manifold.

PERIODIC STANDING PRESSURE TEST

At intervals of not more than 5 years, a 1-hour standing pressuretest shall be made on each medical gas system to check forleakage.

SHUTTLE VALVE PREVENTATIVE MAINTENANCE

Shuttle valves should be inspected for any leaks annually.

Removing the Shuttle Valve

Turn off the gas supply. Disconnect the left hand supply line fromthe shuttle valve. Loosen the round head screws holding the limitswitches in place and remove the switches from the shuttle valveadapters. Disconnect the shuttle valve outlets from the main barconnections to remove the shuttle valve from the cabinet.

Installing the Shuttle Valve

Install the replacement (or reconditioned) shuttle valve by tighten-ing its outlet connections to the centre bar. Install limit switchesand tighten the round head screws to secure the switches inplace.

Connect the left hand supply line between the left hand operatingpressure regulator outlet and the shuttle valve. S-L-O-W-L-Y openthe high pressure inlet valve on the left hand header. Close the


P a g e : 2 6

WARNING: Fire Hazard. DO NOT permit smoking, or any other sourceof ignition in area where the manifold is located, or near the reliefvalve vent outlet. Be certain that all connections are free of dirt,grease and oil. These substances burn with great intensisty in air,enriched with oxygen, or nitrous oxide and some gas mixtures.

WARNING: DO NOT UNDER ANY CIRCUMSTANCES USE HYDRO-CARBON BASED LUBRICANTS ON SHUTTLE VALVE PARTS. USEONLY THE LUBRICANTS SUPPLIED, OR USE A SUITABLE EQUIVA-LENT, SPECIFICALLY APPROVED FOR MEDICAL USE AND FOROXYGEN SERVICE.

high pressure inlet valve on the right hand header.

NOTE: The manifold should now be operating on the left handcylinder bank via the shuttle valve. Line pressure should re-main at its normal setting.

S-L-O-W-L-Y open the high pressure inlet valve on the righthand header. Inspect all connections previously dismantled forleaks using a commercially available leak detector solutioncompatible with oxygen.

Reconditioning of Shuttle Valves

Two replacement parts kits are available to permit thereconditioning of shuttle valves. They include all theelastomeric seats and seals required.

The kit M2-X-LPV-RK is used to recondition low pres-sure shuttle valves M2-SHUTV-LP, used in Oxygen, Ni-trous Oxide, Carbon Dioxide and compressed MedicalAir service.

The kit M2-X-HPV-RK is used to recondition highpressure shuttle valves M2-SHUTV-HP, used only inNitrogen service, Liquid * Liquid and Liquid * High Pressure.

Detailed instructions for dismantling, assembling andtesting of the shuttle valves are supplied with thereplacement parts kits, and are shown in Appendix A.


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TROUBLE SHOOTING

This section is intended to serve as a general guide for identifying thepotential functional problems which occur in operation of Amico manifolds.

When an asterisk (*) appears beside the CORRECTIVE ACTION, therecommended procedure is to replace the whole unit in question, with asubstitute unit until repairs are completed on the original equipment.

Components removed for maintenance, must be serviced, repaired andtested only by personnel qualified to work on equipment used in medicalservice. Only original manufacturer’s parts, as supplied by Amico, may beused in the maintenance of Amico manifolds.

S Y M P T O M C A U S E C O R R E C T I V E A C T I O N

a. Power input.

b. Fuse blown.

c. Power present at J2.

d. Power not present at J2.

No indicator LED’s on frontpanel illuminated when gasis flowing.

Electrical Faults

1. Check for 100 to 240VAC.

2. Replace fuse (1 amp).

3. * Replace the circuit board.

4. * Replace the power supply.

a. All cylinder valves on bothbanks are closed.

b. The bank High Pressure inletvalves are closed.

Both Red LED’s are flash-ing, but both banks are full.

1. Slowly open the cylinder valveson the cylinder nearest thebank High Pressure inlet valve.Wait one minute, then slowlyopen the other cylinder valves.

2. Slowly open the High Pres-sure inlet valves.

a. Microprocessor on circuitboard is out of service.

All LED’s are illuminated. 1. Replace the microprocessor.

2. * Replace the circuit board.


P a g e : 2 8


Electrical Faults

Red indicator LED does notcome on when one bank isempty and change-over oc-curs.

a. Pressure transducer malfunc-tion.

1. * Replace pressure transducerand return faulty unit to fac-tory.

Operating Pressure Regulator Faults

Gas leakage around oper-ating pressure regulatorbody cap.

a. Loose cap.

b. Diaphragm leak.

1. Tighten cap.

2. * Replace regulator with substi-tute unit and change dia-phragm.

Shuttle valve shuttles be-fore operating bank isempty.

a. Idle operating pressure regula-tor creeping due to seat leak-age.

1. * Replace regulator with sub-stitute unit and change seat.

Both banks feeding. a. Shuttle valve assembly hungin center due to over pressurefrom one of the two operatingpressure regulators.

1. * Replace regulator with sub-stitute unit and repair.

Extremely loud or forcefulshuttling of shuttle valveassembly.

a. Leaking operating pressureregulators allowing high pres-sure into the shuttle valve.


Venting at intermediate re-lief valve.

a. Over pressure due to creepingor faulty regulation by operat-ing pressure regulator.


Line Pressure Regulator FaultsPipeline not at desired pres-sure.

a. Line regulator not set correctly. 1. Set line regulator to value speci-fied on (page.8) Line Regula-tor.

Required gas flow not avail-able.

a. Line regulator not set correctly. 1. Set line regulator to value speci-fied on (page.8) Line Regula-tor.


P a g e : 2 9


a. Line regulator set at too high adelivery pressure.

b. Relief valve set at too low apressure.

Gas leakage around joint inshuttle valve body halves.

a. Body halves not joined tightlyenough.

b. Body “O” ring leaking.

1. Tighten screws.

2. Use shuttle valve repair kit.

Gas leakage. a. Check-valve(s) malfunctioned.

b. Shaft “O” ring leaking.

1. Replace check-valve(s).


Both banks feeding. a. Shuttle valve seat leaking.

b. Shuttle valve seat leaking heav-ily.

c. Shuttle valve is hung-up.

d. Check valve in shuttle valveoutlet / middle bar adapter leak-ing.



3. Bleed gas.


Line Pressure Regulator Faults

1. Set line regulator to value speci-fied on (page.8) Line Regula-tor.

2. Replace the relief valve with anew one set in accordancewith (page.9) Pressure ReliefValve.

Shuttle Valve Faults

Low pressure reliefvalve venting.


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ERROR CODE MESSAGES ON THE MANIFOLD DISPLAY

E01 No sensor is connected. Connect a sensor.

E05 Communication error in thetwisted pair cable between thesensor and the manifold mod-ule.

Check twisted pair cable andconnections and replace if de-fective.

E06 Cable between the sensor andthe manifold module, shortedout or reversed polarity.

Reverse polarity or replacecable if defective.

E10 Shuttle valve is not working. Repair shuttle valve by usingrepair kit.

Replace the shuttle valve.


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WARNING: High Pressure oxygen systems must be handled withCAUTION. Spontaneous combustion may result if oxygen comes incontact with grease or oil. Ensure that hands, gloves, clothing andtools are kept clean and free of oil and grease. Be careful not to intro-duce dust or other contaminants into the system when changing cylin-ders. Failure to comply with this procedure may be hazardous.

WARNING: Fire Hazard. DO NOT permit smoking, or any other sourceof ignition in area where the manifold is located, or near the reliefvalve 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.

CYLINDER CHANGING PROCEDURES1. 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 ANAPPROPRIATE WRENCH.

4. PLACE PROTECTIVE CAPS OVER THE CYLINDER VALVES OF THE EMPTYCYLINDERS AND MOVE THEM ASIDE.

5. REMOVE PROTECTIVE CAPS OF THE FULL CYLINDERS. VISUALLY INSPECT THECYLINDER VALVES FOR DUST, GREASE OR OIL.

6. USING A CLEAN (LINT FREE) CLOTH WIPE, EACH CYLINDER VALVE OUTLETCLEAN. DO NOT USE YOUR FINGERS.

7. STANDING TO ONE SIDE, “CRACK” THE CYLINDER VALVES BY BRIEFLY OPENINGAND CLOSING THEM TO BLOW OUT ANY DUST. MAKE SURE THEY AREPOINTING AWAY FROM YOU AND OTHER PERSONNEL.

8. CONNECT THE PIGTAILS TO THE CYLINDER VALVE OUTLETS AND TIGHTEN THENUT WITH AN APPROPRIATE WRENCH.

9. VERY S-L-O-W-L-Y OPEN THE CYLINDER VALVE ON THE CYLINDER CLOSEST TOTHE CONTROL CABINET. WATCH THE BANK PRESSURE DISPLAY ON THE FRONTOF THE CABINET TO MAKE SURE THE PRESSURE RISES SLOWLY TO THE FULLCYLINDER PRESSURE READING.

10. WAIT ONE FULL MINUTE.

11. PROCEED TO S-L-O-W-L-Y OPEN THE REMAINING CYLINDER VALVES ONE AT ATIME.


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ORDERING INFORMATIONThe model number for the ALERT-2 manifold is as follows: M2HD-D-HH-U-GASThe letters “HD” represents the Heavy Duty cabinet (high flow 4500 SCFH) or the “LT”represents the Lite cabinet (less flow 2500 SCFH).

The letter “D” represents the type of cabinet style: D = NFPA, S = Single line, C = CSA.

“HH” represents High Pressure on both sides. “LH” represents Liquid * High Pressureand “LL” represents Liquid * Liquid.

“U” represents language and color code: U = NFPA/USA, E = ISO/Canadian, F = ISO/French.

Replace “GAS” with the appropriate GAS service as follows:

Oxygen = OXY, Medical Air = AIR, Nitrous Oxide = N2O, Carbon Dioxide = CO2 andNitrogen = NIT.

Header-bars are sold separately: M2-HBSX-04U-GAS“HBSX” Staggard header-bar or “HBST” Straight header-bar.

“04” represents the number of cylinders (2*2).

“U” represents language and color code: U = NFPA/USA, E = ISO/Canadian.

Replace “GAS” with the appropriate GAS service.

CONTROL CABINET PARTS LIST

Air Cabinet - HD Assembly M2HD-D-HH-U-AIR

Carbon Dioxide Cabinet - HD Assembly M2HD-D-HH-U-CO2

Nitrous Oxide Cabinet - HD Assembly M2HD-D-HH-U-N2O

Nitrogen Cabinet - HD Assembly M2HD-D-HH-U-NIT

Oxygen Cabinet - HD Assembly M2HD-D-HH-U-OXY

Pressure transducer for Oxy,N2O,Air,CO2 & Nit M2-X-MAN-07B

Pressure transducer for Liquid Manifolds M2-X-MAN-07C

Line pressure regulator for Heavy Duty Manifolds M2-X-MAN-42E

Line pressure regulator for LITE Duty Manifold M2-X-MAN-42B

Operating press.regulator for HD & LT Manifolds M2-X-MAN-18A

Repair kit Line pressure regulator - HD M2-X-MAN-42E-RK

Repair kit Line pressure regulator - LT M2-X-MAN-42B-RK

Repair kit Operating Pressure regulator - HD & LT M2-X-MAN-18A-RK

Shuttle Valve assembly for Nitrogen M2-SHUTV-HP

Shuttle Valve assembly for Oxy,N2O,Air & CO2 M2-SHUTV-LP

D E S C R I P T I O N M O D E L N U M B E R


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Shuttle Valve repair kit for Nitrogen M2-X-HPV-RK

Shuttle Valve repair kit for Oxy,N2O,Air & CO2 M2-X-LPV-RK

Intermediate check valve for all gases M-X-MAN-33B

Intermediate pressure relief valve Nitrogen M2-X-MAN-72W-300

Intermediate press.relief valve Oxy,N2O,Air & CO2 M2-X-MAN-72W-200

Line pressure relief valve for Nitrogen M2-X-MAN-72W-225

Line pressure relief valve for Oxy,N2O,Air & CO2 M2-X-MAN-72W-075

Plug & Chain assembly - Air M-X-HB-NUT-AIR

Plug & Chain assembly - CO2 M-X-HB-NUT-CO2

Plug & Chain assembly - N2O M-X-HB-NUT-N2O

Plug & Chain assembly - Nit M-X-HB-NUT-NIT

Plug & Chain assembly - Oxy M-X-MAN-36

Copper pigtail c/w Check valve - Air M-X-HB-PTC-AIR

Copper pigtail c/w Check valve - CO2 M-X-HB-PTC-CO2

Copper pigtail c/w Check valve - N2O M-X-HB-PTC-N2O

Copper pigtail c/w Check valve - Nit M-X-HB-PTC-NIT

Copper pigtail c/w Check valve - Oxy M-X-HB-PTC-OXY

Stainless pigtail c/w Check valve - Air M-X-HB-PTS-AIR

Stainless pigtail c/w Check valve - CO2 M-X-HB-PTS-CO2

Stainless pigtail c/w Check valve - N2O M-X-HB-PTS-N2O

Stainless pigtail c/w Check valve - Nit M-X-HB-PTS-NIT

Collapsable wall bracket M-X-MAN-77B

Extension wall support (Large) M-X-HB-WBRKT

Extension wall support (Small) M-X-HB-WBRKT-S

High pressure inlet valve M-X-HB-HPVLV-A

ALERT-2 LED circuit board assembly M2-LED-CB

D E S C R I P T I O N M O D E L N U M B E R


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APPENDIX - A

Manifold Internal Layout


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APPENDIX - B

Low Pressure Shuttle Valve

Low pressure shuttle valves M2-SHUTV-LP are used in Oxygen, NitrousOxide, Carbon Dioxide and compressed Medical Air manifolds.

A repair kit is comprised of: 1 diaphragm M2-X-LPV-DIAPHR2 seats M2-X-LPV-SEAT2 O-rings M2-X-LPV-08Lubricant Krytox Grease

MAINTENANCE PROCEDUREDismantling the Shuttle Valve

1. Remove the three socket head cap screws from the body.

2. Gently separate the two body halves.

3. Remove the shaft and diaphragm assembly.

4. Unscrew the lock nut (Item #8 ) from the shaft assembly. Removethe seats (Item #7) and diaphragm (Item #6).

5. Extract o-rings (Item #9) from their grooves using a fine pointedinstrument (needle), being careful not to scratch the brass bodyhalves.

6. Discard the seats and diaphragm.

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P a g e : 3 6

APPENDIX - C

High Pressure Shuttle Valve

High pressure shuttle valves M2-SHUTV-HP are used only in Nitrogenmanifolds.

A repair kit is comprised of: 1 O-ring M2-X-HPV-052 O-ring M2-X-LPV-081 O-ring M2-X-HPV-092 Seats M2-X-LPV-SEATLubricant Krytox Grease

MAINTENANCE PROCEDUREDismantling the Shuttle Valve

1. Remove the three socket head cap screws from the body.

2. Gently separate the two body halves.

3. Remove the piston shaft assembly.

4. Unscrew the lock nut (Item #5) from the shaft assembly. Removethe seats (Item #11) and valve piston.

5. Extract o-rings from their grooves using a fine pointed instrument(needle), being careful not to scratch the brass body halves.

6. Discard the o-rings and seats.

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P a g e : 3 7

ASSEMBLING THE HP SHUTTLE VALVE

1. Using the parts supplied, reassemble the piston shaft assemblyand tighten the lock nut securely.

2. Install the 2 new O-rings (Item #11) into the grooves in the valvebody halves.

3. Apply a very light coating of the lubricant supplied in the repair kit(Krytox Grease, manufactured by DUPONT), to each end of theshaft, about one inch from end to end.

4. Apply a very light coating of the lubricant to the piston bore of thelarger of the two valve body halves. This lubricant serves to reducefriction at the shaft O-ring seals, to permit easy shuttling of theshaft assembly.

5. Gently insert the piston shaft assembly into the larger valve bodyhalf.

6. Place O-ring into groove in valve body.

7. Gently slide the other valve body half onto the shaft and align thebolt holes.

8. Insert the three socket head cap screws and tighten them a turn ata time, alternating the screws, to apply an even clamping pressureon the O-ring, until all three screws are tightened.

9. Ensure that the piston shaft assembly moves freely back and forthin the valve body by alternately applying finger pressure to the shaftends.

WARNING: DO NOT UNDER ANY CIRCUMSTANCES USE HYDRO-CARBON BASED LUBRICANTS ON SHUTTLE VALVE PARTS. USEONLY THE LUBRICANTS SUPPLIED, OR USE A SUITABLE EQUIVA-LENT, SPECIFICALLY APPROVED FOR MEDICAL USE AND FOROXYGEN SERVICE.


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APPENDIX - D

Wiring Schematic Heater Units


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APPENDIX - E

Piping Schematic Diagram - NFPA


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APPENDIX - F

Front View

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APPENDIX - G

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APPENDIX - H

Support Bracket Hole Pattern Layout

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APPENDIX - I

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APPENDIX - J

Control Cabinet Wiring Diagram


P a g e : 4 5

APPENDIX - K

Low Pressure Shuttle Valve Assembly


P a g e : 4 6

APPENDIX - L

High Pressure Shuttle Valve Assembly


P a g e : 4 7

APPENDIX - M

Piping Schematic - Single Line


P a g e : 4 8

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APPENDIX - N

Standard Manifold Flow Rates - All Gases


P a g e : 4 9

APPENDIX - O

Regulator Service Centers

CUSTOMER NAME ADDRESS 1 ADDRESS 2 CITY STATE ZIP PHONE FAX

GREATLAND SUPPLY INC 1231 OCEAN DR HOMER AK 99603 907-235-6905 206-820-0480SCOTTS REPAIR 5305 N 6TH FT SMITH AR 72903 918-427-4045 918-427-4653BROWNS WELD EQUIP REPAIR 2504 W MCDOWELL RD PHOENIX AZ 85009 602-278-6556WESTERN TOOL INC 702 S CAMPBELL TUCSON AZ 85719 520-884-0504 520-623-9341HERSCHEL FEIGELSON 6650 SUNNY BRAE DR SAN DIEGO CA 92119 619-460-3095 619-466-0193GEORGES TORCH & REG REPAIR 1231 MERCANTILE #H OXNARD CA 93030 805-487-2725 805-487-2725J & L WELDING APP REPAIR CO 6431 UPPER PALERMO RD OROVILLE CA 95966 530-534-6382 530-534-1455TORCHMASTER 3155 TYLER ST CARLSBAD CA 92008 760-720-7287 760-720-7294RAY STANGLE'S EQUIP SERVICE 1080 N BATAVIA, UNIT G ORANGE CA 92867 714-639-8531 714-639-8532VERN BROS 6259 C EASTSIDE RD REDDING CA 96001 530-241-2076 530-241-4177WELDING EQUIPMENT & SERVICE 1228 SIXTH ST BERKELEY CA 94710 510-527-6143 510-527-9330ALL GAS EQUPMENT SERV & SALES 6690 W 44TH AVE WHEAT RIDGE CO 80033 303-425-9915 303-425-9927DMD TORCH & REG REPAIR INC 204 N LINK LANE UNIT 2 FT COLLINS CO 80524 970-493-7711 970-493-7755HIGH COUNTRY WELDING SUPPLY 1039 PITKIN AVE GRAND JUNCTION CO 81501 970-245-2113 970-245-0411L P R CONSTRUCTION 1171 DES MOINES AVE LOVELAND CO 80537 970-663-2233 970-663-2073B & D TORCH & REG REPAIR INC 6709 N 11TH ST TAMPA FL 33604 813-239-1185BARR WELDING EQUIPMENT 1639 ACME ST ORLANDO FL 32805 407-843-5402 407-843-5402FLORIDA TORCH & REG REPAIR 19720 HUBER RD N FORT MYERS FL 33903 813-731-2888W J WELDING EQUIP INC 5607 E COLONIAL DR SR 50 ORLANDO FL 32807 407-658-4915 407-658-4915EDDIE REPAIR SERVICE 450 RANDOLPH RD EVANS GA 30809 706-863-1600REGULATOR & TORCH EXCHANGE CO 1562A FARMER RD CONYERS GA 30052 770-922-3836 770-922-2313ANDYS EQUIPMENT & REPAIR 3156 UMI ST LIHUE HI 96766 808-245-2614 808-245-2614THE REGULATOR CONNECTION INC 45-601 OLAKINO PLACE KANEOHE HI 96744 808-247-0393D A DRINGENBERG WELD EQUIP RPR 7929 LOCUST RD DELAVAN IL 61734 309-244-7398INDUSTRIAL WELDER REBUILDERS 11706 S MAYFIELD ALSIP IL 60803 708-371-5688S & K AIR POWER TOOL & SPLY CO 2202 NORTH 40TH DECATUR IL 62526 217-424-8500 217-724-3423WELDING EQUIPMENT REPAIR CO 12560 S HOLIDAY DR UNIT B ALSIP IL 60803 708-597-6655K C WELDING REPAIR INC 834 OSAGE AVE KANSAS CITY KS 66105 913-321-5928 913-621-4236WELDING EQUIP REPAIR SVC 927 PARK AVE NEWPORT KY 41071 606-431-6607 606-431-6610LANDRY ENTERPRISES 9037 LEBLANC LANE ABBEVILLE LA 70510 318-937-6846 318-937-4536MID MICHIGAN REPAIR SERVICE 680 POSEYVILLE RD MIDLAND MI 48640 517-835-6014 517-835-1428LARRYS REPAIR INC 501 W REDWING DULUTH MN 55803 218-724-0397MCKENZIE REPAIR INC 725 CURFEW ST ST PAUL MN 55114 651-646-6501 651-646-0479EMPIRE PRAIRIE WELDING REPAIR 1893 ANDREW CO RD 111 KING CITY MO 64463 660-535-4843AMERICAN WELDER REPAIR 4760 UNDERPASS AVE BILLINGS MT 59101 406-248-6080 406-248-6248APPARATUS REPAIR TECH INC 1155 COMMERCIAL AVE CHARLOTTE NC 28205 704-333-3391 704-333-3387BENTONS WELD REPAIR SERV INC 1206 S 3RD ST WILMINGTON NC 28401 910-343-8322 910-763-7028WELDING APPARATUS REPAIR SRVC 105 OAKLEY DR PO BOX 84 HARRISBURG NC 28075 704-455-2608 704-455-2608COMPRESSED GAS EQUIPMENT CO 2650 MAYFIELD LN LAS CRUCES NM 88005 505-521-3492 505-522-1245R & R REGULATOR REPAIR 266 W THOMAS ST OVERTON NV 89040 702-397-2600 702-873-8382NEVADA WELDING EQIP REPAIR CO 1620 SHABER AVE SPARKS NV 89431 702-359-9353 702-786-8302THE TORCH & REGULATOR REPR CO 1201 LUCIA DR LAS VEGAS NV 89128 702-360-6290 702-360-6290R W WELDING REPAIR SERVICE 3601 WALDEN AVE LANCASTER NY 14086 716-683-1357WELD TECH 315 MT. READ BLVD ROCHESTER NY 14611 716-328-9840 716-328-9861SUPERIOR WELDING EQUIPMENT 9 NEW ST EAST CHESTER NY 10709 914-337-9403 914-337-9403COLUMBUS WELDING EQUIP SRVC 2485 S HIGH ST COLUMBUS OH 43207 614-443-1013QUALITY REPAIR 8825 E AVE PO BOX 956 MENTOR OH 44060 440-255-0606 440-255-3223SPEEDIE TOOL REPAIR 400 W RAILROAD ST STE 9 COLUMBIANA OH 44408 330-482-0232 330-482-0555BILLS WELDING EQUIP REPAIR 2006 SW 15TH OKLAHOMA CITY OK 73108 405-232-4799WILCOX WELDERS REPAIR INC 905 S 2ND N BLDG DUNCAN OK 73533 405-255-0207 405-252-6207G & L SERVICES RT 3 BOX 34 WALTERS OK 73572 405-875-3844PRICE WELDING & SPLY US HWY 70 HC62 BOX 39C WILSON OK 73463 580-668-3057PRO WELDING EQUIP REPAIR 2124 E ADMIRAL BLVD TULSA OK 74110 918-582-3556NORTHWEST APPARATUS 460 21ST ST SPRINGFIELD OR 97477 541-747-7247OXYGEN EQUIPMENT REPAIR SRVC 15220 SW 79TH TIGARD OR 97223 503-639-5730WELDORS EQUIPMENT REPAIRS INC 7825 SE 64TH AVE PORTLAND OR 97206 503-771-3414QUALITY TORCH & REGULATOR SERV 939 4TH AVE S NASHVILLE TN 37210 615-726-2763 615-726-8850TRINITY TORCH & REG REPAIR LLC 5696 FERGUSON RD #8 BARTLETT TN 38134 901-382-7720 901-382-7729TRIPLE C TORCH & REG REPAIR 3502 CALHOUN AVE CHATTANOOGA TN 37407 423-622-1445 423-698-0957CALIBRATION SPECIALTY INC 2500 E GRAUWYLER IRVING TX 75061 972-438-3774 972-438-3874CALICO WELDING SUPPLY 119 29TH ST SOUTH PO BOX 2396 TEXAS CITY TX 77590 409-948-3175 409-948-1071CLEVELAND SUPPLY 4 MLS E HWY 321 PO BOX 1707 CLEVELAND TX 77327 281-592-5291 281-592-5291J T SUPPLY & REPAIR 17204 CR 143 PO BOX 991 PEARLAND TX 77584 281-489-3180 281-489-3849LONE STAR REPAIRS 7999 HANSEN SUITE 419 HOUSTON TX 77061 713-944-6998 713-944-3178SON RISE WELDING SUPPLY INC 11924 N HOUSTON ROSSLYN RD HOUSTON TX TX 77086 281-931-3511 281-931-9345TORCH & GAUGE INC 2350 NW DALLAS ST GRAND PRARIE TX 75050 972-647-9084 972-647-9084WELDING MACHINE & TORCH REPAIR 7110 ECKHERT RD SAN ANTONIO TX 78238 210-680-8390 210-680-0055DJB/GASCO 151 N 700 WEST UNIT#4 N SALT LAKE CITY UT 84054 801-936-1508 801-936-1510

Amico Corporation

21-121 Granton Drive, Richmond Hill, Ontario, L4B 3N4, Canada

Tel.(905) 764-0800, Fax.(905) 764-0862 Web Site: http://www.amico.com

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