Operating & Maintenance Manual Automatic Cryogenic Liquid Solenoid Manifold NFPA v1.0 w w w . a m i c o .
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 L
Testing for Leaks 18 Initial Power-Up 19 - 20 Line Regulator Pressure Adjustment 21 Line Regulator Replacement 21 Control Board Replacement 22 Solenoid Replacement 22 Tank Changing Procedures 23 Ordering Information 24 Manifold Cabinet Header-Bar Assembly Control Cabinet Part List 25 Appendix A Manifold Internal Layout 26 Appendix B Piping Schematic Diagram 27 Appendix C Electrical Wiring Diagram
Microprocessor Digital Manifold Microprocessor Digital Manifold USER RESPONSIBILITY User Responsibility USER RESPONSIBILITY The information contained in this Installation and Maintenance Manual pertains only to the Amico only Automatic Manifold. The information contained in this Installation and Maintenance Manual, pertains to the ALERT-2 This product will perform in conformity with theThis descriptions in thisinmanual when assembled, operated, microprocessor based digital manifold.
Introduction The Amico Automatic Cryogenic Liquid Solenoid Manifold is designed to provide a reliable, uninterrupted supply of gas to a hospital or other medical facility. The manifold accommodates multiple cryogenic containers divided into two equal banks. One bank is designated as a “Primary” source of gas while the other bank stands in reserve as a “Secondary” source. A display of LED’s on the front of the manifold indicates the status of the gas supply.
Description of the Manifold SHIPMENT DETAILS The Manifold system may be shipped in more than one carton, depending on the number of cylinder connections. The main carton contains the following items: • • • • Manifold control panel (with power supply assembly) Wall mounting bracket (attached to manifold control panel) 3/4” (19.05mm) source shut-off valve Installation, Operation and Service manual Additional cartons may contain appropriate number of headers and cylinder pigtail assemblies.
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.
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.
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.
The information contained in this Installation and Maintenance Manual, pertains only to the ALERT-2 microprocessor based digital manifold. This product will perform in conformity with the descriptions contained in this manual when assembled, operated, maintained and serviced in accordance with the installation instructions provided. Description of Parts The manifold must be checked periodically. Parts that are broken, missing, worn, distorted or contaminated, must be replaced immediately.
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.
Display Functions 1. Introduce power to the control cabinet 2. Follow Cylinder Changing Procedures on the side of the cabinet to ensure that all tanks and fittings are secure and properly connected to the header bar. 3. Check the indicator LED for proper functioning. 4. Open the Liquid Tanks one side at a time and press the “Push to Reset” button between the LED displays.
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.
Wall Mounting Instructions 1. Remove manifold control panel from the shipping carton and ensure it is in upright position on the foam packaging insert. 2. Using the back support bracket as a template, place on the flat wall, align top of the bracket with the level horizontal line. The vertical center line of the bracket will be the vertical center line of the installed manifold. The support bracket should be mounted 61-1/2” [1,562.
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.
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.
All Manifolds should not be repaired or altered without prior written approval by Amico Microprocessor Digital Manifold Corporation or it’s distributors. Failure to comply will void all warranty on the manifold. Statements in this manual preceded by the words WARNING, CAUTION, DANGER and NOTE are of special significance. Please read these sections carefully.
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.
Initial Power-Up 1. Release the two latches on either side of the manifold control panel and remove the cover. 2. Verify the following: • Both master valves located on both header bars are open • All four line regulator isolation valves are open (handles in horizontal position) • Power supply has been connected • Both Red “Empty” indicators on the front of the manifold are illuminated • If connected to a master alarm panel, “Secondary Supply” alarm is activated 3. Close 3/4” source shut-off valve. 4.
Initial Power-Up 11. Verify the following: • Right bank Red “Empty” LED goes out • Right bank Yellow “Ready” LED illuminates • Right bank tank contents gauge reads cylinder pressure 12. Close left bank tank. Slightly press bleed valve located on the side of the line regulator.
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.
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. 1. Remove two top screws at the base of the display board bracket and tilt the display board assembly back. 2. Disconnect power supply. 3. Remove the screws located on the circuit board, which detaches it from the front plate.
Tank M i c r oChanging p r o c e s s o r D Procedures igital Manifold USER RESPONSIBILITY 1. Keep the main bank valve open throughout these procedures. 2. Close tank valves on all empty tanks. The information contained in this Installation and Maintenance Manual, pertains only to the ALERT-2 microprocessor based digital manifold. This product will perform in conformity with the descriptions contained in this manual when assembled, operated, maintained and serviced in accordance with the 4.
Ordering Information M3A-DS-LL-L-XXX Manifold Cabinet: A = Analog DS = Dual Solenoid The Letters “XXX” Define the Gas: LL = Liquid OXY = Oxygen N2O = Nitrous Oxide CO2 = Carbon Dioxide NIT = Nitrogen The Letter “L” Defines the Langauge: 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 Pipeline
Control Cabinet Parts List DESCRIPTION MODEL NUMBER Pressure transducer for Oxy, N2O, CO2, & Nit M2-X-MAN-07C Line pressure regulator for Heavy Duty Manifolds For NIT M2-X-MAN-42E-L M2-X-MAN-42E-R M2-X-MAN-42E-LN M2-X-MAN-42E-RN Repair Kit - Line pressure regulator M2-REG700-RK Intermediate check valve for all gases Operating pressure relief valve Pipe away adaptor Line Pressure relief valve for Nitrogen Line pressure relief valve for Oxy, N2O, & CO2 Pigtail c/w Check valve – Cryogenic M-X-MAN-33B
Appendix A Manifold Internal Layout 26 Amico Pipeline
Appendix B Piping Schematic Diagram PIPING SCHEMATIC DIAGRAM DUAL LINE REGULATORS (NFPA) TO PIPELINE DISTRIBUTION SYSTEM PROVISION FOR RESERVE VENT TO OUTSIDE 9 7 8 7 11 CONTROL CABINET 10 6 6 4 LEFT HAND BANK CYLINDER PRESSURE 3 4 6 HP LB HP RB 3 1 5 LEFT BANK 5 RIGHT BANK 2 RIGHT HAND BANK CYLINDER PRESSURE 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 re
Appendix C Electrical Wiring Diagram Amico Medical Gas Alarm Master Alarm 115 VAC Supply Voltage Amico Gas Manifold Connect the NO loop to the appropriate points. 110 / 240 VAC Wiring 50 / 60 Hz C NO Current Draw: 1 Amp. Max.
Appendix D Control Cabinet Wiring Diagram www.amico.
Appendix E Liquid Setup with Header Bars NOTE: A standard 450psi relief valve is provided on the header. Inch [mm] 3/4” Isolation Valve Provision for Reserve Manifold Relief Valve Vent Supply Line Approx. 40 [1016] 9 [229] Approx. 40 [1016] OXYGEN H.P. Vent (1/2" NPT) 19 [432] Push To Start 17 [432] Dependent upon type of Liquid cylinder used. Minimum tank pressure must be at least 300 psi for Liquid Nitrogen and 200 psi for all other gases. Dependent upon type of Liquid cylinder used.
Appendix F Liquid Manifold with High Pressure Reserve Set at 85psi Decreasing 3 110 psi NFPA Relief Valve Piping Not Included 8 7 6 Set at 1100 psi Decreasing 5 Set Reg. to 80 - 85 psi Supply Line 4 Provision for Reserve Manifold Relief Valve Vent 1/2” (NPT) Approx. 40 [1016] 1 OXYGEN 2 Push To Start H.P. Vent (1/2" NPT) Approx. 40 [1016] Top View 2 Dependent upon type of Liquid cylinder used.
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