The HiQ® Hydrogen NM gas generator
Contents
1. NMH 600 p n Description p n Description H200 031 Deioniser bag H200 031 Deioniser bag H200 030 New deioniser triangle bag H200 030 New deioniser triangle bag NM200 001 Cover NM200 001 Cover NM200 002 Water tank NM200 002 Water tank NM200 003 Deioniser bag holder NM200 003 Deioniser bag holder NM200 004 Display membrane NM200 004 Display membrane NM200 005 Display NM200 005 Display NM200 006 NM O separator NM200 006 NM O separator NM200 007 NM H separator NM200 007 NM H separator H200 007 G L separator H200 007 G L separator NM200 009 High pressure dryer NM200 009 High pressure dryer NM200 010 Pressure release valve NM200 010 Pressure release valve NM200 011 Toroidal transformer 230 VA 50 60 Hz NM200 011 Toroidal transformer 230 VA 50 60 Hz H250000 001 Complete cell H250000 001NM Complete cell H200 006 Non return valve for cell inlet H200 006 Non return valve for cell inlet NM200 015 Rear intake fan NM200 015 Rear intake fan NM200 016 Internal circulation fan NM200 016 Internal circulation fan NM200 017 START button 240 120 V 50 60 Hz NM200 017 START button 240 120 V 50 60 Hz NM204 018 Mainboard NM204 018 Mainboard NM200 019 Cables NM200 019 Cables NM200 020 Mainframe NM200 020 Mainframe NM200 021 Water tubing NM200 021 Water tubing NM200 023 Water ta2. Model NMH 250 0 250 ml min at STP 5502 Model NMH 300 0 300ml min at STP 5995 Model NMH 500 0 500ml min at STP 5203 Model NMH 600 0 600 ml min at STP 5996 Model NMH 1L 0 1000 ml min at STP 5989 Max outlet pressure 10 5 bar 155 psi Purity 99 999900 Weight dry Models NMH 100 160 250 300 17 5 kg Model NMH 500 600 19kg Model NMH 1L 20kg Power consumption Model NMH 100 90 VA Model NMH 160 115 VA Model NMH 250 160 VA Model NMH 300 200 VA Model NMH 500 300 VA Model NMH 600 340 VA Model NMH 1L 480 VA Input voltage 120 240 V 50 60 Hz Fuse 4A 5x20 Pressure accuracy 0 1 bar 0 5 Microprocessor controlled display Graphic display 128 x 64 pixels Index of protection IP2X Operating conditions gt Temperature gt Relative humidity 150 10 40 C 0 80 Yo non condensing Over voltage category Pollution degree 2 Sound pressure level 46 dB A Case dimensions 230 x 355 x 410 mm WxDxH 04 NMH Series Notes on FCC compliance This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC rules These limits are designed to pro vide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the i
3. been carefully inspected before transport Visual checks for damage and functional tests should be performed upon receipt Any damage must be immediately noted and reported The generator must only be returned according to the shipping instructions provided Placing the generator The Hydrogen Generator must be placed on a flat level vibration free shock free surface Do not place the generator over a source of heat as this may cause the device to overheat The unit should not be in contact with any other objects on any side and the air inlet must not be blocked Leave at least 30 cm of free space at the rear for ventilation Do not operate the generator in a sealed or unventilated room or in close pro ximity to an open flame or other sources of ignition Do not operate the generator at below freezing temperatures Operation is guaranteed at operating temperatures between 15 and 40 C Warning Normal precautions for any hydrogen supply should be taken when using the generator Do not use in sealed or unventilated rooms Do not use in close proximity of open flames or other sources of ignition Symbols used on the generator Earth symbol This symbol marks the earth connections to the chassis of the Hydrogen Generator S HYDMOGEN VENT ik amp Gas connections Pure dry hydrogen at regulated pressure is available at the hydrogen outlet port at the rear of the generator This port must be co
4. As a technology leader it is our task to constantly raise the bar Traditionally driven by entrepreneurship we are working steadily on new high quality products and innovative processes Linde offers more We create added value clearly discernible competitive advantages and greater profitability Each concept is tailored specifically to meet our customers requirements offering standardised as well as customised solutions This applies to all industries and all companies regardless of their size If you want to keep pace with tomorrow s competition you need a partner by your side for whom top quality process optimisation and enhanced productivity are part of daily business However we define partnership not merely as being there for you but being with you After all joint activities form the core of commercial success Linde ideas become solutions Linde AG Linde Gases Division Seitnerstrasse 70 82049 Pullach Germany Phone 49 89 74 46 0 Fax 49 89 74 46 12 30 www linde gas com 0608 1 0 L amp P Subject to change
5. Col 2 Heater 1 Stop Heater 2 Stop Ko Un es ee Flow test Int Press Out Press Flow 0 NMH Series Configuration parameters Item Description Options Range Default Pressure units Sets the desired unit of measure for the pressure bar psi kPa bar Volume units Sets the desired unit of measure for the volume scm standard cubic meters scm scf standard cubic feet Temp units Sets the desired unit of measure for the temperature C and F C Fie Ue Tee Sets how fast the pressure has to increase If the pressure 0 1 6 8 bar min 03 increases at a slower rate a low pressure alarm is activated 1 4 100 psi min 1 5 Pressure drop delay Sets a delay in seconds to ignore a pressure drop 2 10 min 2 overrides the low pressure alarm Auto start Sets whether the unit automatically starts production when YES NO NO the power is switched on Beeper Sets whether the audible signal is activated in the event ON OFF ON of an alarm Master Configures the unit as the master for cascading operation YES NO NO Number of slaves Enter the number of slaves connected to the master 0 32 0 ID number Sets the ID number 532 0 Remote start stop Configures the remote START STOP function START STOP START only START STOP mode direct control Remote relay mode Configures the remote relay contacts Normally open NO NC Normally closed NC Warnings pre alarms If set to YE
6. S the warnings pre alarms are also shown YES NO NO in alarm log in the alarm log Lock keyboard If set to YES the keyboard will be locked automatically after YES NO NO the generator is in the main window for more than 20S To unlock the keyboard press the unlock button and hold for 5s Display contrast Adjusts the contrast of the display 0 10 5 Auto refill If set to ON the pre level water alarm is used to trigger an ON OFF GER external pump or valve to refill the water tank Auto refill time Sets the duration of water refilling after the pump or valve 0 605 0 has been triggered Diagnostic display NMH Series 15 Item Description Max Production tot Total hydrogen production 99 999 scf 4000 00scm Operating time h Total number of hours of unit operation 99 999 hours Wat quality US Actual water conductivity 38 US Cell current A Actual cell current Cell voltage V Actual cell voltage Cell voltage peak V Maximum cell voltage in the life of the cell PS temp Actual temperature of the power supply PS temp peak Maximum temperature of the power supply Int press Special functions Item Release pressure Actual internal pressure of the unit Description This function is used to depressurise the unit completely works only in standby mode the gas line has to be removed Dryer Accesses the dryer functions see below Drye
7. THE LINDE GROUP Linde User manual Hydrogen Generator Models NMH Series NMH 100 NMH 160 NMH 250 NMH 300 NMH 500 NMH 600 NMH 1L Date June 18 2008 HiQ 02 NMH Series Table of contents Introduction Scope of the manual Specifications Notes on FCC compliance Correct use Packing list Description Installation Receiving the generator Placing the generator Symbols used on the generator Gas connections Electrical connections Remote connections optional Cascading optional Configuration Operating in master slave mode Auto refill optional Initial start up Filling the water tank Installing the deioniser bag Operation Configuration parameters Diagnostic display Special functions Maintenance Routine maintenance Returning the unit Spare parts list a KR BW WW KO CO WO WON N DD DW a Oo 10 10 1 14 15 15 16 16 17 18 HiQ is a registered trademark of The Linde Group Introduction Scope of the manual This manual provides operation and maintenance instructions for the Hydrogen Generator models NMH 100 NMH 160 NMH 250 NMH 300 NMH 500 NMH 600 and NMH 1L Specifications Specifications of the different Hydrogen Generator models Hydrogen flow rate STP Standard temperature and pressure 20 C 1 bar NMH Series 03 HiQ code Model NMH 100 0 100 ml min at STP 5500 Model NMH 160 0 160 ml min at STP 5501
8. e to YES Configuring the slaves 1 Go into the Configure menu and set the master to NO 2 Go into slave ID number and set to 2 3 4 The configuration is now complete Operating in master slave mode If the configuration and the serial connection is correct the Slaves will show Slave mode when powered up Connect the gas outlets of all the generators to the same line Important The cascading function will only work properly if the gas outlets on all the generators are connected to the same gas line NMH Series 09 Auto refill optional Description The auto refill option gives you the possibility to refill the water tank of the generator automatically from an external water source You can either use a DI water line or a water reservoir The correct refill time depends on the pressure of the water source A higher pressure results in a shorter refill time Max pressure is 60 psig If you are using a water reservoir make sure the minimum water level in the reservoir is 2 3 feet higher than the top of the generator Generator Filter From DI water line or water reservoir 100 to 240 VAC 50 60 Hz Drain port Installation steps 1 Connect the water tubes and the electric wires as shown in the diagram above 2 Configure the generator as follows gt Set the generator to standby gt Set the auto refill function to ON gt Adjust the auto refill time
9. eration There are no adjustments to be made to the generator The only routine service operations are those described below Nevertheless the generator should be inspected approxi mately every 2 years Contact your supplier Routine maintenance The following section describes the maintenance operations required for the correct operation of the Hydrogen Generator Cleaning The internal components of the Hydrogen Generator do not need to be cleaned and should not be accessed by the user for cleaning To clean the outside of the unit only use a damp cloth no detergents acids or aggressive or abrasive substances Water refilling The tank must be refilled when the water level approaches the lower level and the Refill water warning message appears Deioniser bag replacement Rinse the water tank and replace the deionizer bag approximately every six months or whenever the Change water message appears Installing the new deioniser bag See page 10 Installing the deioniser bag Returning the unit In the event of any faults or damage first notify the agent or distributor who sup plied the unit Please also provide full details of the problem plus the model and serial number Instructions will then be provided for the service or the return of the unit If the one year warranty has expired or the fault is due to misuse of the unit all repair and shipping costs are to be paid by the customer All other c
10. essure release valve NM200 011 Toroidal transformer 230 VA 50 60 Hz NM200 011 Toroidal transformer 230 VA 50 60 Hz H210000 001 Complete cell H216000 001 Complete cell H200 006 Non return valve for cell inlet H200 006 Non return valve for cell inlet NM200 015 Rear intake fan NM200 015 Rear intake fan NM200 016 Internal circulation fan NM200 016 Internal circulation fan NM200 017 START button 240 120 V 50 60 Hz NM200 017 START button 240 120 V 50 60 Hz NM201 018 Mainboard NM202 018 Mainboard NM200 019 Cables NM200 019 Cables NM200 020 Mainframe NM200 020 Mainframe NM200 021 Water tubing NM200 021 Water tubing NM200 023 Water tank cap NM200 023 Water tank cap NM200 024 Outlet fitting NM200 024 Outlet fitting H200 005 Water drain outlet tube H200 005 Water drain outlet tube NM200 026 Base support NM200 026 Base support H210000 004 Cell service on old cell H216000 004 Cell service on old cell List of spare parts NMH 250 NMH Series List of spare parts NMH 300 p n Description p n Description H200 031 Deioniser bag H200 031 Deioniser bag H200 030 New deioniser triangle bag H200 030 New deioniser triangle bag NM200 001 Cover NM200 001 Cover NM200 002 Water tank NM200 002 Water tank NM200 003 Deioniser bag holder NM200 003 De
11. his time you can use the standard de ioniser bag see Spare parts list After having filled the tank with water the triangle deioniser bag sup plied must be placed in the tank Inspect the bag thoroughly for holes or tears indicated by loose deioniser beads on the outer surface If the bag is damaged in any way discard and replace it with a new one Only use original parts see Spare parts list Wash the deioniser bag in deionised water before proceeding Insert the free end of the T fastener through the hole in the centre of the holder until it is securely fastened The bag should not block the outlet at the bottom of the tank Once in place the bag should not be allowed to dry out Operation The operating status of the unit is shown on the main screen on the graphic display The main screen has three options at the bottom corresponding to the three buttons on the unit which are used to run the various functions and provide access to the configuration and diagnostics of the unit following the tree structure shown in the figure below Menu menu Standby Press Act 0 bar Sel T bar Configure Pressure Adjust Flow Litilitias Water RRR NMH Series 11 Pressure Adjust pressure adjus 10 7 bar CY 4 Ed Configure configure Pressure unlis Volume units Temp units osans Ext Utilities Alarm list Diagnostic Special functiones seon p select et NMH Se
12. in the table below Remote connector pin configuration Pin Description 1 2 Start 12 30 VDC polarity not important 3 4 Standby system not OK 5 6 Reaching normal pressure overproduction 7 8 Refill water low water 9 10 Low water level water level too low 11 12 Bad water 13 14 Change water bad water warning NMH Series 07 08 NMH Series Cascading optional The RS 485 interface allows up to 10 generators to be operated in parallel mode One unit has to be defined as the master while the others operate in slave mode All the slaves need to be configured with individual ID numbers Communication between the generators requires a standard D sub 9 pin serial cable The serial ports are connected as follows Master RS 485 port 1 gt Slave 1 RS 485 port 1 Slave 1 RS 485 port2 gt Slave 2 RS 485 port 2 Ha H H H up Generator ii Generator ja gt Generator 10 Configuration For operation in cascading mode all generators must have an ID number Each ID number is unique The master unit must also have an ID number Configuring the master 1 Go into the Configure menu and set the master to YES 2 Go into the Number of slaves menu and set the number of units connected to the master 3 Go into the Configure menu and set the master to NO 4 Go into slave ID number and set to 1 5 Go back to master and set the valu
13. ioniser bag holder NM200 004 Display membrane NM200 004 Display membrane NM200 005 Display NM200 005 Display NM200 006 NM O separator NM200 006 NM O separator NM200 007 NM H separator NM200 007 NM H separator H200 007 G L separator H200 007 G L separator NM200 009 High pressure dryer NM200 009 High pressure dryer NM200 010 Pressure release valve NM200 010 Pressure release valve NM200 011 Toroidal transformer 230 VA 50 60 Hz NM200 011 Toroidal transformer 230 VA 50 60 Hz H225000 001 Complete cell H210000 001NM Complete cell H200 006 Non return valve for cell inlet H200 006 Non return valve for cell inlet NM200 015 Rear intake fan NM200 015 Rear intake fan NM200 016 Internal circulation fan NM200 016 Internal circulation fan NM200 017 START button 240 120 V 50 60 Hz NM200 017 START button 240 120 V 50 60 Hz NM203 018 Mainboard NM203 018 Mainboard NM200 019 Cables NM200 019 Cables NM200 020 Mainframe NM200 020 Mainframe NM200 021 Water tubing NM200 021 Water tubing NM200 023 Water tank cap NM200 023 Water tank cap NM200 024 Outlet fitting NM200 024 Outlet fitting H200 005 Water drain outlet tube H200 005 Water drain outlet tube NM200 026 Base support NM200 026 Base support H225000 004 Cell service on old cell H210000 004NM Cell service on old cell 20 NMH Series List of spare parts NMH 500 List of spare parts
14. nk cap NM200 023 Water tank cap NM200 024 Outlet fitting NM200 024 Outlet fitting H200 005 Water drain outlet tube H200 005 Water drain outlet tube NM200 026 Base support NM200 026 Base support H250000 004 Cell service on old cell H250000 004NM Cell service on old cell List of spare parts NMH 1L p n Description H200 031 Deioniser bag H200 030 New deioniser triangle bag NM200 001 Cover NM200 002 Water tank NM200 003 Deioniser bag holder NM200 004 Display membrane NM200 005 Display NM200 006 NM O separator NM200 007 NM H separator H200 007 G L separator NM200 009 High pressure dryer NM200 010 Pressure release valve NM200 011 Toroidal transformer 230 VA 50 60 Hz H2 1L 001 Complete cell H200 006 Non return valve for cell inlet NM200 015 Rear intake fan NM200 016 Internal circulation fan NM200 017 START button 240 120 V 50 60 Hz NM205 018 Mainboard NM200 019 Cables NM200 020 Mainframe NM200 021 Water tubing NM200 023 Water tank cap NM200 024 Outlet fitting H200 005 Water drain outlet tube NM200 026 Base support H2 1L 004 Cell service on old cell NMH Series 21 Important The manufacturer reserves the right to change or modify his products without prior notice Getting ahead through innovation With its innovative concepts Linde is playing a pioneering role in the global market
15. nnected to the 1 8 tubing using a stainless steel or copper Swagelok connector Teflon connectors are not suitable The pressure at this port is adjusted and shown on the display The hydrogen relief port at the rear of the unit can be connected to an exhaust hood or another vent system Warning The line from the relief port should never be connected in such a way that back pressure can develop Important Remove the plugs from the oxygen vent and hydrogen vent before operating the unit Keep these plugs for transporting the unit Electrical connections Check the setting of the voltage selector on the rear of the unit The set voltage is indicated by the white arrow To change the voltage proceed as follows gt Using a small screwdriver remove the voltage selector insert gt Replace the voltage selector insert so that the white arrow points to the correct voltage Remote connections optional The Hydrogen Generators are fitted with an optional remote control fea ture which allows the user to check the status of the machine from a remote position and to start stop the production of hydrogen The contacts used in the remote control are potential free relay contacts The contacts can be configured via software as Normally open or Normally closed see the Operation section The maxi mum voltage and current ratings for the contacts are 1A 48V The pin configuration of the remote connector is shown
16. nstructions may cause harmful interfe rence to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encour aged to try to correct the interference by one or more of the following measures gt Reorient or relocate the receiving antenna gt Increase the separation between the equipment and the receiver gt Connect the equipment to an outlet on a circuit different from that to which the receiver is connected gt Consult the dealer or an experienced radio TV technician for help Correct use The Hydrogen Generator is designed to produce hydrogen for laboratory use The unit must only be operated for this purpose according to the specifications and instructions provided in this manual In particular the following warnings must be observed at all times gt Indoor use only gt Never operate the unit at below zero temperatures This will cause irreversible damage to the electrolysis cell gt Only use pure water see Filling the water tank gt Only operate the unit in a room with sufficient ventilation see Placing the generator gt Always unplug the unit from the mains power supply before accessing the internal components for replacement gt Only the parts described in
17. osts are borne by the customer except as otherwise expressly agreed upon Warning If the unit has to be transported make sure that the water tank is completely empty and place the plug supplied with the unit on the oxygen vent at the rear of the unit Close the small hole in the cap on the water tank with a strip of adhesive tape Use suitable packaging The unit should be transported in an upright position this warning should be visible on the outside of the packaging NMH Series Spare parts list The table below provides a list and descriptions of the Spare parts for the Hydrogen Generator Please also refer to the corresponding figures List of spare parts NMH 100 List of spare parts NMH 160 p n Description p n Description H200 031 Deioniser bag H200 031 Deioniser bag H200 030 New deioniser triangle bag H200 030 New deioniser triangle bag NM200 001 Cover NM200 001 Cover NM200 002 Water tank NM200 002 Water tank NM200 003 Deioniser bag holder NM200 003 Deioniser bag holder NM200 004 Display membrane NM200 004 Display membrane NM200 005 Display NM200 005 Display NM200 006 NM O separator NM200 006 NM O separator NM200 007 NM H separator NM200 007 NM H separator H200 007 G L separator H200 007 G L separator NM200 009 High pressure dryer NM200 009 High pressure dryer NM200 010 Pressure release valve NM200 010 Pr
18. r status Shows the temperatures of the drying columns and the position of the cycle Conditioning When the conditioning cycle is started the dryer performs 4 fast cycles During this time the output valve is closed Heater test The heater has to show a reaction of 10 C to pass the test Leak internal The outlet valve is closed the pressure is set to the max when the pressure reaches the max production is Stopped and the pressure drop is measured for 1 minute If the pressure drop is below the preset value the test is passed Important the leak test will only work if the generator is in standby mode Leak external Works similar to the leak internal except the outlet valve is open This function can be used to test the exter nal gas lines Important the leak external will only work if the generator is in standby mode Complete system test Combination of leak internal and heater test Flow test This function sets the outlet valve to provide a certain flow Important this function will only work if the generator is in standby mode Adjustable from 0 to 100 of maximum flow Toggle valve Used to switch the valves manually for advanced diagnostics only Important after exiting this window the valves will return to the status prior to entering the window 16 NMH Series Maintenance With proper care and maintenance your Hydrogen Genera tor should provide you with years of trouble free op
19. ries Pressure units Volume units Temp units Co nfig ure Pressure rise Pressure drop delay Autostart beaper Master Humber of slaves ID number Remole sartstop Remote relay mode Fr alarms in list lock keyboard display contrast Autorefif Autarefif time Utilities Alarm list Diagnostic Special functiones i nn n nn Alarm list 21 04 2004 17 00 Bad water 12 05 2004 17 00 Low water 03 05 2004 17 00 Low pressure Special functions ee Release Pressure Dryer Leak internal DL LE BE a Prod Tot sem Oper Time W Quality Cell Curr Cell Volt Cell Vpeak PS Temp PS Tpeak int Press Release Pressure Manual refill Dryer Leak internal Leak external Flow test Complete system Toggle valve Set clock releare proses Int Press 7 bar Out Press 7 bar Refill status dryer status dryer conditioning heater test Scroll f select ext leak internal ew e a aie int Press 7 bar Out Press leak external l py e oo u a Int Press Out Press 7 bar 7 bar m e a Int Press Out Press Wait 7 SIC leak test Heater 1 stop Heater 2 stop toggle valve valve 1 close valve 1 close valve 1 close valve 1 close Lo ee exit set clock eee 05 08 2004 NMH Series 13 Temp Col 1 Temp Col 2 Cycle time Time Remaining Temp Col 1 Temp
20. the Spare parts list can be replaced by the user Packing list Warning Any changes or modifications to this equipment not expressly approved by the manufacturer may void the user s authority to operate the equipment List of items included in the shipment Quantity Description Hydrogen Generator Instruction manual Deioniser triangle bag Water drain with flexible tubing Power cable NMH Series 05 Description The Hydrogen Generator produces pure hydrogen and oxygen as a by product through the electrolysis of water The key element of the generator is an electrochemical cell assembly which contains a solid polymer electrolyte No free acids or alkalines are used Deionised or pure distilled water is the only liquid which may come into contact with the cell As the water is con sumed it must be refilled from time to time as required The generated hydrogen is accumulated in the hydrogen water separator and the desiccant housing The internal pressure is controlled by a pressure transducer The outlet pressure is con trolled by a proportional valve The hydrogen is dried by passing through the automatic dryer The hydrogen then passes through the outlet port at the rear Hz Pressure relief Hz Vent He Outlet Drain port Auto refill connector Oz Vent 06 NMH Series Installation Receiving the generator All units have
21. to 8 s 3 Test the auto refill time as follows gt Empty the water tank gt Start the generator gt Obtain the refilling level should be approx 30 to 50 of the max level gt If the refill level is too low increase the auto refill time gt Repeat these steps until you have a correct refilling volume Warning gt Note every time you go into the Auto refill menu If the refill time is too long the you have to put the generator to standby and start water tank of the generator can it again overflow and damage the unit 10 NMH Series Initial start up Filling the water tank In order to fill the generator with water remove the cap under the Slider on the water tank Carefully fill the tank with distilled or deion ised water The conductivity of the water used in the generator must not exceed 2 US Fill the tank to the maximum level indicator Close the Slider cap Warning Do not fill the water tank higher than the marked level Caution To prevent contamination of the cell assembly it is important to use only deionised or distilled water in the generator Water containing metallic impurities will contami nate or damage the cell and will void the warranty Installing the deioniser bag The new triangle deioniser bag has been designed for a higher water purifying capacity It is recommendable to use this bag for new generators during the first 4 to 6 months of operation After t
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