Manual - Amico
Contents
1. y I i Dependent upon type Dependent upon type Dependent upon type of Liquid cylinder used of Liquid cylinder used of Liquid cylinder used ee ee ee U lM Minimum tank pressure 60 60 Minimum tank pressure Minimum tank pressure must be at least 300 psi 1524 1 524 must be at least 300 psi must be at least 300 psi for Liquid Nitrogen and for Liquid Nitrogen and for Liquid Nitrogen and 200 psi for all other gases 200 psi for all other gases 200 psi for all other gases NE Z a ee Front View Side View 30 Amico Corporation Appendix F Liquid Manifold with High Pressure Reserve Set at 85psi Decreasing NM 110 psi NFPA Relief Valve Piping Not Included 6 Set at 1100 psi Decreasing 7 T Set Reg to 80 85 psi it Supply Line 9 i a Provision for Reserve Manifold Relief Valve Vent 1 2 NPT 1 Approx gt 40 1016 Top View Approx 40 1016 eee 1 2 NPT A Sa if i i ee Dependent upon type of Liquid cylinder used Dependent upon type of Liquid cylinder used 1 M3A DS LL U OXY l l 2 M2 HBLO 02U OXY 3 M PRSW GA ORES 4 M SIMP U 08 OXY Minimum tank pressure 5 M PRSW RES OXY l l l l Minimum tan2. gauge perform leak testing described in Testing For Leaks page 20 19 Reinstall manifold control panel cover 20 Slowly open all tanks on both banks of the manifold 21 Open 3 4 19 05mm source valve 20 Amico Corporation Line Regulator Pressure Adjustment This procedure should be performed if the line regulator pressure is not within acceptable limits during performance verification procedure or after installation of a new line regulator 1 With both the banks supplying pressure open ball valves on the inlet and outlet on only one side of the line regulator to be adjusted 2 Slightly press the bleed valve on the side of the regulator to create a small flow of gas though the manifold 3 Using the handle on the bonnet of the regulator turn to adjust the pressure to the specified setting as mentioned on the cabinet door by observing the line gauge 4 Repeat steps 1 3 to adjust the other line regulator 5 After adjusting the pressure to the specified setting open all balls valves and ensure the supply line remains open Line Regulator Replacement If necessary the line regulator replacement can be performed while manifold is in service However this should only be done by qualified technicians experienced in servicing medical equipment 1 Close the two ball valves on inlet and outlet of line regulator to be replaced 2 Loosen union nuts on two closed isolation valves 3 Vent pressure from the bank which was s
3. horizontal position e Power supply has been connected e Both Red Empty indicators on the front of the manifold are illuminated e If connected to a master alarm panel Secondary Supply alarm is activated Close 3 4 source shut off valve Slowly open one tank on the right side of the manifold and press the Push to Reset button between the bank LED indicators Verify the following e Right bank Red Empty LED goes out e Right bank Green In Use LED illuminates e Right bank cylinder contents gauge reads cylinder pressure Slowly open one tank on the left side of the manifold and press the Push to reset button between the bank indicators Verify the following e Left bank Red Empty LED goes out e Left bank Yellow Ready LED illuminates e Left bank cylinder contents gauge reads cylinder pressure e If connected to a master alarm panel secondary supply alarm is not activated Close right bank cylinder Slightly depress bleed valve located on the side of the regulator Verify the following e Right bank cylinder contents gauge drops slowly e Asthe 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 e After change over the left bank Yellow Ready LED goes out and the Green In Use LED illuminates Verify the line pressure gau
4. AC 50 60Hz e Incorporates six LED s display readable in poor lighting conditions e Dual line pressure regulators e 3 4 Isolation valve for supply line e Wall mounting bracket attached to manifold for easy installation e Manifold complies with NFPA 99 e Economizer circuit www amico com 5 6 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 e Manifold control panel with power supply assembly e Wall mounting bracket attached to manifold control panel e 3 4 19 05mm source shut off valve e Installation Operation and Service manual Additional cartons may contain appropriate number of headers and cylinder pigtail assemblies Cylinder inlets closest to the manifold control panel are intended for cylinders placed directly beneath the manifold control panel Pigtails for all gases are 72 1 828 8mm flexible type The manifold is designed to be mounted directly to a wall THE MANIFOLD ENCLOSURE The manifold contains a switch mode power supply that can handle voltage from 110 240 VAC with a built in fuse and terminal block The enclosure on this manifold is NEMA 1 general purpose applications only This cabinet must not be mounted outdoors For outdoor use a NEMA 4 enclosure is recommended The manifold also has a latched enclosure that is easy to remove The pre assemb
5. Operating amp Maintenance Manual Automatic Cryogenic Liquid Solenoid Manitold NFPA v1 1 OXYGEN Contents User Responsibility 4 Introduction 5 Features Description of the Manifold 8 Shipment Details The Manifold Enclosure Manifold Display Board Economizer Circuit Liquid Tanks Gas Flow Through Manifold Reserve High Pressure Bank Description of Parts 11 Main Line Source Valve Solenoid Valve Pressure Transducers Check Valve Line Regulator Ball Valve Dual Line Regulator Pressure Relief Valve Front Panel Indicators Power Supply Control Board Gas Service Identification Header Bar Connections Operating Alarm Systems Parts Layout Display Functions 12 Installation 13 Wall Mounting Instructions 14 16 Tank Installation Instructions 17 2 Amico Corporation Contents Testing for Leaks Initial Power Up Line Regulator Pressure Adjustment Line Regulator Replacement Control Board Replacement Solenoid Replacement Tank Changing Procedures Ordering Information Manifold Cabinet Header Bar Assembly Control Cabinet Part List Appendix A Manifold Internal Layout Appendix B Piping Schematic Diagram Appendix C Electrical Wiring Diagram Appendix D Control Cabinet Wiring Diagram AppendixE Liquid Setup with Header Bars Appendix F Liquid Manifold with High Pressure Reserve 19 20 21 21 22 22 23 24 25 26 27 28 29 30 31 www amico com 3 User Responsibility The information c
6. STRIBUTION SYSTEM PROVISION VENT TO FOR OUTSIDE RESERVE CONTROL CABINET RIGHT HAND BANK CYLINDER PRESSURE eee ee a A Item Description Pig Tail check valve Cylinder valve High pressure inlet valve Pressure Transducer Solenoid Valve Check valve Line pressure regulator 2 Way valve Line pressure relief valve Operating pressure relief valve hp mOoWONDUAWNp Bleed Valve www amico com 27 Appendix C Electrical Wiring Diagram Amico Medical Gas Alarm Master Alarm C 1 C 2 3 C 4 C SIC GIC 7 C BIC 9 C1 O 219 Q VO OO VO JA 0l BV Olo ES 115 VAC Connect the NO loop to the Supply appropriate points Voltage 110 240 VAC Wiring Manifold 50 60 Hz a 7 ae Current Draw 1 Amp Max External Power Supply 28 Amico Corporation Appendix D Control Cabinet Wiring Diagram DOME LOADED MANIFOLD WIRING SCHEMATIC SEN 1 SEN 2 POWER SOL solenoid www amico com 29 Appendix E Liquid Setup with Header Bars NOTE A standard 450psi relief valve is Inch provided on the header mm 3 4 Isolation Valve Provision for Reserve Manifold Relief Valve Vent Supply Line 9 __ Approx 40 1016 Approx _ gt 40 1016 l l l l l l l l l l A PSSS A AA a 4 mr rl JoL LATTA A ES E
7. e proper tank connection hose assemblies pigtails supplied Make sure all other outlets are capped with the plug and chain assemblies supplied Make sure that the pressure inlet valves of each bank are fully OPEN S L O W L Y open the tank valves on each side of the cabinet one side at a time to pressurize the header bar and pipeline All outlets from the pipeline downstream of the manifold should be closed and thus there should be no flow from the manifold Check for leaks at all tank extension joints and at the joints where the pipes are connected to the pipeline using a commercial leak detector which is compatible with oxygen If any leaks are found the system must be depressurized by bleeding through a convenient pipeline outlet and the faulty connections must be repaired The Header bar connections may be tightened one more turn maintaining the horizontal location of the tank adapters or a further application of an oxygen service threaded sealant may be required If the brazed pipeline connections leak they must be removed cleaned and then re brazed following the proper technique All repaired joints must be pressure tested as mentioned previously Amico Corporation Initial Power Up 10 Release the two latches on either side of the manifold control panel and remove the cover Verify the following e Both master valves located on both header bars are open All four line regulator isolation valves are open handles in
8. e of the manifold The inlet block is provided with a sintered bronze filter and a C clip to secure it The header bar should contain the proper gas connections and all cylinder connections as well the pigtail hose assemblies should comply with CGA standard B96 Compressed Gas Cylinder Valve outlet and inlet connections 10 Amico Corporation Description of Parts OPERATING ALARM SYSTEMS The manifold control cabinet contains the required circuitry to send a dry contact signal to the alarm unit when a bank is empty and change over occurs The normally closed internal circuitry is designed to alarm when there is an open circuit The depletion of a bank triggers a relay which renders the alarm circuit open and initiates the alarm signal PARTS LAYOUT Provision for reserve Supply Line Relief Valve Z Operating Relief Valve Relief Valve Vent Power Sun NE Line Gauge pply Alarm Connection Ball Valve 4X Bleed Valve 2X Left Line Regulator ke Lor XI QO Right Line Regulator Bank Transducer Bank Transducer Left Bank Gauge Right Bank Gauge Economizer Circuit Solenoid Solenoid Check Valves www amico com 11 Display Functions Introduce power to the control cabinet Follow Cylinder Changing Procedures on the side of the cabinet to ensure that all tanks and fittings are secure and properly connected to the header bar Check the indicator LED for proper functioning Open the Liquid Tanks one
9. e relief valves in the manifold have piping connections to allow for connection of a vent line to the outside of the facility FRONT PANEL INDICATORS Six front panel indicators monitor the status of the manifold WWwW amico com 9 Description of Parts POWER SUPPLY The power supply is 110 240 VAC 50 60 Hz It is mounted on the top right hand side of the manifold and has a 1 amp fuse CONTROL BOARD The Control Board is an electronic circuit board which controls the bank switch over It monitors the pressure with the help of the bank transducers and controls the solenoid valve in order to initiate the bank switch or changeover The control board illuminates the appropriate front panel LED indicators and also provides dry contacts for connections to a remote buzzer or an external master alarm Power to the control board is provided by the external power supply DANGER Electrical shock hazard Ensure that the main power source is turned off during the connection of the power supply GAS SERVICE IDENTIFICATION Amico manifolds are clearly labeled for the intended gas use The appropriate gas label is attached on the cabinet door There are two pipes extending from the top of the cabinet one is for the main line pressure and the other is the vent for the pressure relief valve which is also labeled accordingly HEADER BAR CONNECTIONS The gas specific header bar should be attached to the inlet block on either sid
10. ge reading is acceptable Slowly open one cylinder on the right side of the manifold and press the Push to Reset button www amico com 19 Initial Power Up 11 Verify the following e Right bank Red Empty LED goes out e Right bank Yellow Ready LED illuminates e Right bank tank contents gauge reads cylinder pressure 12 Close left bank tank Slightly press bleed valve located on the side of the line regulator Verify the following e Left bank tank contents gauge drops slowly e As left cylinder contents gauge is nearly depleted the manifold changes over to the right bank e After change over the left bank Green In Use LED goes out and Red Empty LED illuminates e After change over the right bank Yellow Ready LED goes out and Green In Use LED illuminates 13 Slowly open one cylinder on the left side of the manifold and press the Push to Reset button 14 Verify the following e Left bank Red Empty LED goes out e Left bank Yellow Ready LED illuminates e Left bank cylinder contents gauge reads tank pressure e f connected to a master alarm panel secondary supply alarm is not activated 15 Close left and right side cylinders 16 Record pressure readings of left and right bank tank contents gauges 17 Wait 15 minutes 18 Compare current readings of the left and right bank tank contents gauges to those recorded in step 16 If there is a noticeable pressure change on either
11. hut off in step 2 by pressing the bleed valve on side of the regulator 4 Ensure the orientation of fittings direction of gas flow is the same on the replacement regulator Install fittings on new regulator 5 Inspect O ring removed from the ball valve union If damaged replace O ring 6 Verify the correct orientation of fittings on the regulator some slight adjustment may be required to align with the ball valves without causing stress to the fittings 7 Hand tighten the two ball valve union nuts and then with a wrench snug lightly to ensure the fittings are secure NOTE do not over tighten unions as it is an o ring seal 8 Open ball valves and set the line regulator s output pressure as described in Line Regulator Pressure Adjustment procedure www amico com 21 Control Board Replacement If necessary the control board replacement can be performed while the manifold is in service However this should only be done by qualified technicians experienced in servicing medical equipment A Remove two top screws at the base of the display board bracket and tilt the display board assembly back Disconnect power supply Remove the screws located on the circuit board which detaches it from the front plate Note orientation of the old circuit board and remove wiring one at a time and connect each wire to the appropriate terminal on the new board Install the circuit board and fasten the screws to secure it Return bracket t
12. ico control cabinet should be connected to their respective pipeline system connections The connection to the relief valves should be made with a union supplied by others to facilitate change if required An appropriate sealing compound that is suitable for the gas being transmitted shall be used for threaded connections WARNING If downstream joints near the cabinet outlet are to be silver brazed special attention must be given not to overheat the copper tubing since this may alter the sealing compound used in the threaded joints leading from the control cabinet WWW amico com 17 Testing for Leaks The following instructions apply for performing a leak test on the joints made during assembly and connection of the Amico manifold The connections inside the Amico control cabinet have been inspected at the manufacturing plant and DO NOT require leak testing In order to determine whether any leaks exist between the tank and header bar sections or at the pipeline connections the systems must be pressurized using either oil free dry air or oil free dry nitrogen In the case of medical Oxygen Nitrous Oxide or Carbon Dioxide Amico manifolds the actual service gases ARE NOT suitable for leak testing due to their inherent dangerous properties Leak testing must be performed using either oil free dry air or oil free dry nitrogen Connect a Liquid tank of the manifold service gas to the header bars on each side of the manifold using th
13. itrogen NOTE In the event of a power fluctuation or failure a switch over alarm will be activated on the master alarm panels 12 Both the solenoid valves will open and supply pressure until both the banks are depleted The solenoid will not prevent the flow from being supplied no matter which side is In Use and until the system is completely out of gas Amico Corporation Installation Precautions Tampering with gas specific connections shall be prohibited Do not alter remove or modify gas specific connections Keep all manifold parts tools and work surfaces free of oil grease and dirt These and other flammable materials may ignite when exposed to high pressure oxygen or nitrous oxide e Donot use chemicals lubricants or sealants unless specified in these instructions e Before connecting the Liquid tank Dewar to the manifold ensure the tank valve is free of dirt and debris e After connecting the tank to manifold open the tank valve S L O W L Y to allow heat of compression to dissipate Donot use flame or sniff tests for leaks e Do not apply heat to any part of the manifold system e Always ensure Liquid tanks Dewar s are secure and on level floor e Donot repeatedly bend sharply bend or twist pigtails as damage to tubing may occur e After the manifold wall bracket has been mounted at least two people should lift and hang the manifold cabinet one should not do this alone e Donot put the manifold into operation
14. k pressure 60 60 be at 300 psi be at 300 psi for Liquid Nitrogen and 1524 oes for Liquid Nitrogen and 6 M X MAN 72W 125 200 psi for all other gases 200 psi for all other gases 7 VV CHK3 EXT PIPE SIZE 8 VV ISO G PIPE SIZE www amico com 31 WWW amIiCco com Amico Corporation 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 wen NFPA APE INSTAL MAINT SOL LIQ MANI 05 28 2015
15. led circuit board is located on the center of the enclosure with a hinged mounting bracket This design will reduce installation time and eliminate the risk of improper installation since all the components of the manifold are connected and tested at the factory MANIFOLD DISPLAY BOARD The LED s on the front of the Manifold indicate the status of the gas supply The primary bank will indicate In Use with the Green LED turned on and the reserve secondary indicating Ready with the Yellow LED turned on or Empty Red LED turned on depending on the status of gas When the primary bank of cylinders are depleted the manifold will automatically switch to the secondary bank of cylinders without interruption of gas flow to the facility The Red LED will illuminate when a bank is depleted and two normally closed dry contacts will open One or both sets of contacts may be wired to an external alarm remote buzzer and or a building management system When replacement cylinders are attached to the depleted bank and the reset button pressed the red LED goes out and the yellow LED illuminates indicating that the bank has been automatically designated as the secondary supply No other user interaction is required Both sets of dry contacts close to cancel any external alarm conditions ECONOMIZER CIRCUIT To prevent the loss of useful gas into the atmosphere an economizer circuit is included to utilize the accumulated excess pressure from the secondary su
16. ncrease and give the false indication that the tank is full Always check contents of tanks via weight and float gauge on the tank The Empty tank can then be replaced with a full one The manifold will not reset until the Empty bank is replaced and the Push to Reset button is pressed At this time the status is changed from Empty to Ready That bank is now the secondary bank The Push to Test reset should not be pressed until the empty tank has been replaced with a full one During normal operation this sequence of alternation will change the In Use and Ready banks from right hand to left hand banks back and forth as tanks get depleted Depending on the amount of gas usage the pressure building valve on the tank In Use may need to be left open This allows the tank to convert adequate liquid to gas for the higher flow needed This will depend on the facility s usage This will normally cause frosting on the outside of the container indicating the proper operation of the pressure builder Occasional venting of gas on the tank to relieve excessive pressure is normal and can be expected RESERVE HIGH PRESSURE BANK The high pressure reserve bank is used to back up the liquid tanks The reason is that sometimes the liquid tanks both banks could run empty and the personnel using the system does not know how to determine the amount of liquid content inside the tanks When the liquid tanks run empt
17. nes the Langauge The Letters XXX Define the Gas OXY Oxygen N20 Nitrous Oxide CO2 Carbon Dioxide NIT Nitrogen U English NFPA S Spanish NFPA Header Bar Assembly M2 HBLQ XXL XXX Number of Cylinders 1 1 02 2 2 04 LQ Straight c w Cryogenic Pigtails 24 Amico Corporation Control Cabinet Parts List Pressure transducer for Oxy N20 CO2 amp Nit Line pressure regulator for Heavy Duty Manifolds For NIT Repair Kit Line pressure regulator Intermediate check valve for all gases Operating pressure relief valve Pipe away adaptor Line Pressure relief valve for Nitrogen Line pressure relief valve for Oxy N20 amp CO2 Pigtail c w Check valve Cryogenic ALERT 2 1 LED circuit board Manifold Power Supply Board Solenoid Valve Economizer check valve M2 X MAN 07C M2 X MAN 42E L M2 X MAN 42E R M2 X MAN 42E LN M2 X MAN 42E RN M2 REG700 RK M X MAN 33B M X MAN 72W 500 M X PIPEAWAY GNT M X IN 72W 225 M X IN 72W 075 M X HB CRYO GAS GAS OXY N20 NIT amp CO2 M3 LED DLCB M2 X POWER M3 X LIQ SOLVLV M2 X MAN 3 1 WWW amico com 25 Appendix A Manifold Internal Layout 26 Amico Corporation Appendix B Piping Schematic Diagram LEFT HAND BANK CYLINDER PRESSURE On t I I I I I I I I I I I I I I m m m m m o o o o o o a A PIPING SCHEMATIC DIAGRAM DUAL LINE REGULATORS NFPA TO PIPELINE DI
18. o its original position and then fasten the two screws at the base Reconnect power supply to the manifold cabinet Check the correct operation of the circuit board by simulating a bank switch over a couple of times Solenoid Replacement 22 Ensure the Solenoid that needs to be replaced is not the side that is In use Disconnect power supply if manifold is not in service Remove two top screws at the base of the display board bracket and tilt the display board assembly back and with the help of a small flat screw driver disconnect the solenoid wires labeled L for left and R for right to indicate the side of the solenoid from the terminal block on the circuit board Remove the two union nuts on either side of the solenoid one located at the inlet side and the other at the output side of the solenoid Install the replacement solenoid and tightened the union nuts on either side to ensure the solenoid is secure Connect the solenoid wires to the appropriate terminal on the circuit board Return the circuit board bracket back to upright position and then fasten the two screws at the base Reconnect power supply to the manifold cabinet Check the correct operation of the solenoid by simulating a bank switch over a couple of times Amico Corporation Tank Changing Procedures 1 Keep the main bank valve open throughout these procedures 2 Close tank valves on all empty tanks 3 Disconnect hose pigtails from tank valve outlets
19. ogically controlled by the micro display board with the bank In Use being normally opened and the reserve secondary being held normally closed PRESSURE TRANSDUCERS The Pressure Transducer senses the bank pressure and transfers information to the display board to indicate the In Use Reserve amp Empty mode There are two Y 5533 transducers in the manifold cabinet one for the left bank cylinder and one for the a right bank cylinder CHECK VALVE A Check valve is provided upstream of each solenoid to prevent back flow while servicing a bank 8 Amico Corporation Description of Parts LINE REGULATOR BALL VALVE Quarter turn ball valves are provided upstream and downstream of each line regulator These valves allow for removal and servicing of one of the line regulators while the other is in use All four ball valves are normally in the open position DUAL LINE REGULATOR On every Amico Automatic Gas Manifold the line regulator is capable of maintaining a constant dynamic delivery of pressure at the maximum designed flow rate of the system For Oxygen Nitrous Oxide and Carbon Dioxide service the line regulators are factory preset at 55psi and for Nitrogen at 170psi PRESSURE RELIEF VALVE Pressure relief valves are installed downstream of all pressure regulators and are set at no more than 50 above the setting of the pressure regulator Relief valves are capable of fully relieving the pressure at the set point All pressur
20. ontained in this Installation and Maintenance Manual pertains only to the Amico Automatic Manifold This product will perform in conformity with the descriptions contained in this manual when assembled operated maintained and serviced in accordance with the installation instructions provided The manifold MUST be checked periodically Parts that are broken missing worn distorted or contaminated must be replaced immediately Should such repair or replacement become necessary please contact Amico Corporation or their distributors All Manifolds should not be repaired or altered without prior written approval by Amico Corporation or its distributors Failure to comply will void all warranty on the manifold Statements in this manual preceded by the words WARNING CAUTION DANGER and NOTE are of special 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 4 Amico Corporation Introduction The Amico Automatic Cryogenic Liquid Solenoid Manifold is designed to provide a reliable uninterrupted supply of gas to a hospital or other medical facility The manifold accommodates multiple cryogenic containers divided into two equal banks One bank is designated as a Primary source of gas while the other bank stand
21. pply bank The economizer circuit re routes the excess pressure into the line via check valves inserted into the main inlet blocks then passes through the 0 007 orifice which goes into the main center section of the manifold Amico Corporation Description of the Manifold LIQUID TANKS Liquid cylinders contain the product in a liquid state inside of the container The liquid has to be converted to gas before entering the manifold This can be done by the container VIA the internal vaporizers or in a high or low flow situation with an external vaporizer The contents of the liquid container can only be measured by weight A gauge on the tank or simply rocking the tank to determine its weight The contents of the tanks cannot be measured by the pressure output The gauges on the manifold for bank pressure do not indicate the amount of product inside the liquid tanks GAS FLOW THROUGH THE MANIFOLD The liquid containers are divided into two banks One bank will be the In Use and the other bank will be Ready or secondary bank The bank In Use can be either bank with the other bank as secondary depending on the current status As the In Use bank depletes liquid is gone and pressure drops in that bank the manifold will switch to the secondary bank Indicator LEDs will change to indicate the In Use now as Empty and the Ready bank will become In Use NOTE It is common for the pressure on the empty bank to i
22. s in reserve as a Secondary source A display of LED s on the front of the manifold indicates the status of the gas supply Each bank has a green IN USE yellow READY and red EMPTY LED When the primary bank of cylinders are depleted the manifold will automatically switch to the secondary bank of cylinders without interruption of gas flow to the facility The red LED will illuminate when a bank is depleted and two normally closed dry contacts for the reserve In Use alarm will open One or both sets of contacts may be wired to an external alarm remote buzzer and or a building management system When the empty Liquid tanks Dewar s are replaced with full ones the manifold will need to be reset by pressing the PUSH TO RESET button on the front of the cabinet At this time the status is changed from EMPTY to READY mode as indicated on the LED display that the bank is now the secondary bank Note the PUSH TO RESET button should not be pressed until the empty Liquid tank Dewar has been replaced with a full one The power supply is connected to the top right hand corner of the manifold Connections from the manifold to the Amico master alarm must be made from terminals marked C Signal to the appropriate terminals Reserve In Use on the master alarm or a remote buzzer The Manifold is designed in accordance with the National Fire Protection Association NFPA 99 FEATURES INCLUDE e Input power to the manifold is 110 240 V
23. side at a time and press the Push to Reset button between the LED displays One Green LED on the side which had the tanks opened first should be lit for In Use and the other side should have a Yellow LED lit for Ready Close the Liquid tank valves on the primary In Use bank and watch the indicator LED to ensure proper functioning The primary bank pressure should decrease while the secondary and line pressures stay constant When the primary bank pressure falls to approximately 100psi for all gases except Nitrogen which is 200psi the bank switch over occurs The line pressure will remain constant with the LED illuminating indicating the In Use and Empty banks After replacing the depleted gas cylinders open the liquid tank valves on the depleted side and press the Push to Reset button and the Empty bank should become Ready With the Manifold wired to the Amico Master Alarm the change over from primary to secondary bank will cause an audible alarm The appropriate indicator LED on the Master Alarm will illuminate This can also be achieved by usingthe switch over test button located on the back of the control board The Amico Automatic Manifolds are designed in accordance with the current revision of NFPA 99 There are two categories of the Amico Manifolds Depending upon the delivery pressure the following gas types are available 55psi Delivery Pressure Oxygen Nitrous Oxide Carbon Dioxide 170psi Delivery Pressure N
24. until verified by a qualified person as per NFPA 99 or other local standards www amico com 13 Wall Mounting Instructions 14 Remove manifold control panel from the shipping carton and ensure it is in upright position on the foam packaging insert Using the back support bracket as a template place on the flat wall align top of the bracket with the level horizontal line The vertical center line of the bracket will be the vertical center line of the installed manifold The support bracket should be mounted 61 1 2 1 562 1 mm from the finished floor to the bottom hole on the bracket as shown in Figure 1 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 Amico Corporation Figure 1 Locate bracket per horizontal line 61 1 2 1 562 1mm y To Floor Wall Mounting Instructions 4 Hang the manifold control panel on the mounting bracket The top two control panel mounting bolts will slide into slots of the bracket The bottom of the manifold control panel should be angled away from the bracket until the top two bolts have been inserted as shown in Figure 2 Figure 2 NOTE A bracket mounting height of 61 1 2 1 562 1 mm from the finished floor to the bottom hole on the support bracket allows for adequate clearance beneath the manifold when
25. using an appropriate wrench 4 Place protective caps over the tank valves of the empty tanks and move them aside 5 Visually inspect the tank valves for dust grease or oil 6 Using aclean lint free cloth wipe each tank valve outlet clean Do not use your fingers 7 Connect the hose pigtails to the tank valve outlets and tighten the nut with an appropriate wrench 8 Very S L O W L Y open the valve on the tank closest to the control cabinet Watch the bank pressure display on the front of the cabinet to make sure the pressure rises slowly 9 S L O W L Y open the remaining tank valves one at a time WARNING Oxygen systems must be handled with CAUTION Spontaneous combustion may occur if oxygen comes into contact with grease or oil Ensure that hands gloves clothing and tools are kept clean and free of oil and grease Be careful not to introduce dust or other contaminants into the system when changing tanks Failure to comply with the procedure may be hazardous WARNING Fire Hazard DO NOT permit smoking or any other source of ignition in area where the manifold is located or near the relief valve vent outlet Be certain that all connections are free of dirt grease and oil These substances burn with great intensity in air enriched with oxygen or nitrous oxide and some gas mixtures www amico com 23 Ordering Information Manifold Cabinet M3A DS LL L XXX DS Dual Solenoid LL Liquid The Letter L Defi
26. utilizing standard H size or slightly taller cylinders www amico com 15 Wall Mounting Instructions 5 The bottom of the control panel can then be positioned so that the holes at the bottom of the panel align with the holes in the hanging bracket Use 3 8 9 525 mm bolts to secure the cabinet to the bracket as shown in Figure 3 Figure 3 WARNING Do not attempt to lift manifold alone Two people are recommended for hanging the manifold onto wall mounting bracket CAUTION Do not use thread sealant on header bar or pigtail connections 16 Amico Corporation Tank Installation Instructions CAUTION This section contains important information necessary for proper installation Read it carefully before installing Header bars e Position the wall brackets e Connect the two header bar assemblies to the inlet blocks on either side of the cabinet e Secure the Header bar assembly by tightening the union nuts onto the inlet blocks e Remove the plug and chain assembly on each of the outlet connections on the header bar e Attach the pigtails to the header bar connections while ensuring the check valves are operating in the proper direction WARNING To avoid contamination with particles or other potentially hazardous materials keep pigtails in plastic wrapping until such time as connection to gas cylinder is planned In accordance with NFPA 99 the manifold can then be connected to it The outlet pipes leading from the Am
27. y the pressure inside the manifold will drop in the case of OXY CO2 amp N20 below 150 PSI and NIT below 275 PSI At 80 PSI for OXY CO2 N20 and 180 PSI for NIT the High Pressure Reserve manifold will start to supply gas An alarm from the Reserve In Use pressure switch set at 85 PSI for OXY N20 CO2 and 190 psi for NIT will be activated The Reserve header has a reserve low pressure switch to be set at 1100 PSI for OXY NIT amp AIR and 500 PSI for CO2 N20 that will ensure the Reserve Header has adequate volume to supply the facility until the liquid tanks are replenished The reserve high pressure tank when full is usually around 2300 psi for OXY NIT amp AIR and 800 PSI for CO2 N20 www amico com 7 Description of the Manifold RESERVE HIGH PRESSURE BANK NOTE Flow capacity depends on the amount of liquid containers and type of tanks containers used For Oxygen the average flow per liquid tank container is 350scfh Flow capacity is increased with additional containers For higher flow requirements an external vaporizer supplied by others is necessary Description of Parts MAIN LINE SOURCE VALVE A 3 4 19 05mm isolation valve with a locking handle supplied with the manifold should be installed on top of the manifold connecting to the main supply line SOLENOID VALVE The Solenoid valve is 12 VDC normally open and is located between the Liquid tank Dewar and the Line regulator The Solenoid is l
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