Transcript
Bulletin TI-H2-1200J ®
Parker Balston Hydrogen Generator Models H2-800, H2-1200 and 9800 Bulletin TI-H2-1200J
Installation, Operation, and Maintenance Manual
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Parker Hannifin Corporation Filtration and Separation Division Haverhill, MA • 1-800-343-4048 www.labgasgenerators.com
This equipment must be used only by authorized personnel, in a controlled laboratory environment. Refer all detailed questions to the Parker Balston Operation Manuals. This equipment must only be used with IEC listed accessories (computer, printer, monitor, etc.)
RFI Compliance This equipment has been tested and found to comply with the limits of VFG 243, VDE 0871, and EN 50 082-1. Any changes or modifications not expressly approved by Parker Hannifin Corporation could adversely affect compliance and warranty.
Use only shielded interface cables with this equipment. If the instrument is received in a damaged condition, request an immediate inspection by the carrier and local technical service representative. Parker Hannifin Corporation is not responsible for damage occurring during transit. However, Parker Hannifin Corporation will assist in ensuring a satisfactory settlement from the carrier. Upon receipt of all damage/inspection reports, Parker Hannifin Corporation will arrange for either instrument repair or replacement. For proper ventilation of this equipment, a distance of 15 cm must be maintained between all sides of this unit and any other surface.
This product is shelf life sensitive. Do not store for more than 3 months prior to installation and operation.
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Explanation of Warnings
Bulletin TI-H2-1200J
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Table of Contents
Bulletin TI-H2-1200J
Chapter 1 Introduction Introduction........................................................................................1 Specifications.....................................................................................1 Shipping Damage...............................................................................2 Equipment Return...............................................................................2 Contents of Shipping Container..........................................................2
Chapter 2 Description Electrolysis Process............................................................................3 Generator Operation...........................................................................4
Chapter 3 Installation and Connections Generator Location.............................................................................8 Filling the Water Tank........................................................................8 Filling the Generator Manually....................................................9 Gravity Feed From External Reservoir........................................9 External Pressurized Source........................................................9 Installing the Deionizer Bag...............................................................10 Connecting the Power.........................................................................11 Gas Connections.................................................................................12 Dual Gas Generator (or Supply) Connections....................................12 Initial Startup......................................................................................13 Controlled Venting..............................................................................15 Configuration Parameters...................................................................16
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Table of Contents
Chapter 4 Operation Operational Summary.........................................................................17 Water Level........................................................................................ 18 Filling the Generator Manually................................................... 19 Gravity Feed From External Reservoir........................................19 External Pressurized Source........................................................19 Schedule of Maintenance Items......................................................... 19
Chapter 5 Maintenance Maintenance........................................................................................20 Rinsing/Draining the Water Tanks......................................................21
Chapter 6 Troubleshooting Troubleshooting..................................................................................23 Typical Generator Operating Characteristics......................................23 The Service Mode...............................................................................25 ROM Information and Display Bits...................................................27 Error Conditions.................................................................................28 Troubleshooting Guide.......................................................................29
Chapter 7 Preparation for Storage or Shipment Preparation for Storage.......................................................................33 Preparation for Shipment................................................................... 33
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Bulletin TI-H2-1200J
Chapter 1
Introduction
Introduction This manual provides operation and maintenance instructions for the Parker Balston Hydrogen Generator Models H2-800, H2-1200 and 9800. The hydrogen generator produces hydrogen (and oxygen as a byproduct) through the electrolysis of deionized, water. The pure hydrogen generated is suitable as a carrier gas for use with gas chromatographs. The unit can also be used with flame ionization detectors, sulfur monitors and other general laboratory equipment requiring a source of pure hydrogen.
Specifications Specifications for the Models H2-800, H2-1200 and 9800 are shown in the table below.
Principal Specifications
Model Number
H2-800 Hydrogen Generator
9800, H2-1200 Hydrogen Generator
CE Mark CSA Safety Standard
CAN/CSA 22.2 No. 1010.1 - 92 + A1
IEC Safety Standard
EIC 1010-1:1990+A1:1992+A2:1995/EN61010-1: 1993
EMC Compliance
Directive 89/336/EEC
IEC 1010 Installation Category
Category II
IEC 1010 Pollution Degree
Degree 2
H2 Purity
99.99999%
Maximum Outlet Pressure
100 psig (690 kPa)
H2 Outlet Port Maximum Flow
1/4" Tube compression 800 ±10 cc/min
Min/Max Ambient Temp.
40°F - 100°F (4°C - 38°C)
Maximum Relative Humidity
80% (non-condensing)
Product Startup Time
1 hour
Min. Water Requirements Electrical Requirements (NA/JA/220)
1150 ± 50 cc/min
5 Megohm-cm 96-106 / 105-129 / 207-253 VAC, 50/60 Hz
Power Consumption (NA)
5.3 amps @ 120 VAC
Power Consumption (JA)
6.0 amps @ 100 VAC
Power Consumption (220)
2.6 amps @ 230 VAC
Fuse Type - NA 120 VAC units
SB 6.3 A, 250V 5x20mm (P/N A03-0066)
Fuse Type - JA 100 VAC units
SB 8.0 A, 250V 5x20mm (P/N A03-0067)
Fuse Type - 220 VAC units Product Dimensions
SB 3.15 A, 250V 5x20mm (P/N 13216) 13" x 15.5" x 17" (33cm x 39cm x 43cm)
Product Weight
45 lbs. (20.4 Kg)
In this manual, and on the front panel displays, the unit of pressure is psi (pounds per square inch) as measured by gauge (psig) or kPa (kilopascals).
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Chapter 1
Introduction
Shipping Damage Each hydrogen generator has been carefully inspected before shipment. Visual and operational checks should be made upon receipt by the purchaser. Any shipping damage should be noted and a claim filed immediately with the carrier. Generators damaged in transit should not be returned to the supplier without first obtaining specific shipping instructions.
Equipment Return If a fault develops, notify the supplier from whom the hydrogen generator was purchased, or if unable to do so, notify the manufacturer; give full details of the difficulty, and include the instrument model and serial number. Upon receipt of this information, service or shipping instructions will be issued. If return of the unit is authorized, forward it to the factory for repairs. If the unit is not covered by warranty, or if it is determined that the fault is caused by misuse, repairs will be made at the expense of the purchaser. An estimate of the cost of repairs will be submitted for approval prior to making any repairs.
Contents of Shipping Container Quantity
P/N
Description
1
H2-800, H2-1200, Hydrogen Generator or A9800
1
TI-H2-1200
Operation Manual
Accessories 2 1
Deionizer Bags (2 bag kit) (P/N 7601132) P/N 1648324 1648544
Assorted Parts Kit: Drain Port Insert with 1/4" Tygon® tubing (6 ft.)(P/N8597618) ® Relief Port Adapter to 3/8" Tygon tube (elbow)
12312 13412
Adapter from 1/4" tubing to 1/8" stainless tubing Line Cord (P/N for North America only; consult factory for other cord sets) Pressurized Water Feed Inlet Fitting Gravity Water Feed Inlet Fitting
5077757 1648265
This product is shelf life sensitive. Do not store for more than 3 months prior to installation and operation.
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Bulletin TI-H2-1200J
Chapter 2
Description
Electrolysis Process The hydrogen generator produces pure hydrogen by the electrolysis of water. The key element of the generator is an electrochemical cell assembly which contains a solid polymer electrolyte. The solid polymer electrolyte material is in the form of a sheet of plastic. There are no free acids or alkalines used. Deionized water is the only liquid contained in the unit. You must replace the water as it is used. This can be done either manually or by using the external water fill option. The generated hydrogen gas accumulates in the hydrogen reservoir of the electrochemical cell and in the purifier. In the purifier, the hydrogen is heated and then passed through a palladium membrane. Only hydrogen atoms can permeate the palladium membrane, thus providing ultra high purity hydrogen. The heated hydrogen gas is cooled on the way to the pressure regulator. The pressure regulator governs pressure of the outgoing gas supply. This output pressure is displayed on the front panel liquid crystal display, or LCD (see Figure 2-1). You can adjust the output pressure using the control on the top of the unit.
LCD
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Figure 2-1. Hydrogen Generator - Front View.
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Chapter 2
Description
Generator Operation Water for the electrolysis is stored in two interconnected water tanks. Each tank contains a deionizer bag, which limits the detrimental effects of water running through the metallic components in the electrochemical cell. The right water tank contains probes which monitor the water level and the quality of the water. If the water level gets too low, the system shuts down power to the cell and the ADD WATER message appears on the LCD. If the conductivity of the water falls below 100,000 ohms/cm, the system shuts down power to the cell and the CHANGE WATER message is displayed. If the CHANGE WATER message is displayed, the water tanks must be drained and re-filled. The DRAIN WATER TANK function of the control module facilitates this process. The internal control module actively monitors the generator’s cell pressure, cell voltage, cell current, cell water quality, and cell water level. The water quality and level of water in the tanks are also monitored, along with the quality of the incoming water supply. Output pressure and flow rate percentage can be viewed on the LCD, along with system status and error messages. The output pressure and flow rate percentage are displayed whenever hydrogen is being generated and the control module is in the normal operating mode. There are two additional modes used to access the functions of the control module: the CONFIGURE mode and the SERVICE mode. The CONFIGURE mode enables changes to the system parameters, and the SERVICE mode provides access to troubleshooting and servicing functions for the system. The system employs a water pump which supplies a consistent flow of water from the water tanks into the electrochemical cell. On start-up, the pump runs for 30 seconds at full speed. This primes the lines and ensures that water is moving across the cell before current is supplied to the cell. The pump speed is also increased a few seconds out of every minute of normal operation. When the lines are being primed, the LCD displays the message, PUMP PRIMING. Electrolysis occurs inside the electrochemical cell assembly (Figure 2-2). Positively charged hydrogen ions are transported across the solid polymer electrolyte along with excess water molecules. The hydrogen ions then recombine to create molecular hydrogen. Negatively charged oxygen ions recombine to form molecular oxygen. The water saturated oxygen is fed into a water/oxygen separator, where the water is returned to the water tank, and the oxygen escapes to the atmosphere. Small deionizer bags in the separator ensure the quality of the water returned to the water tank.
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Bulletin TI-H2-1200J
Chapter 2
Description
Figure 2-2. Hydrogen Generator - Fluid Schematic.
The final stage of the hydrogen formation process is the purification of the molecular hydrogen. The generator is equipped with a heated palladium purifier to scrub residual water and oxygen from the hydrogen stream. This final purification removes contaminants to less than 1 ppm. When power is applied to the generator, the palladium purifier starts to heat up. First, the purifier temperature is displayed until it is stable above 600°C. Then the purifier warm-up time is displayed and counts down. The warm-up time allows all of the material inside the purifier to reach optimal temperature. To completely heat the purifier to 600°C takes about 60 minutes. The purifier must be heated to a sufficient temperature to allow the hydrogen to pass through the palladium membrane.
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Chapter 2
Description
Any impurities removed from the hydrogen steam are purged from the generator to maintain the integrity of the purification system. This bleed of impurities flows through a severely restricted orifice within the purifier, and then flows to a bleed outlet port on the back panel. The electrical power supplied to the cell is regulated to provide just enough power to create the required flow rate of hydrogen. As the cell begins to age or the water pump fails, the voltage across the cell increases. If the cell voltage exceeds a safe limit, the system turns off the power to the cell assembly. The system reports the failure by displaying the error message, CELL OVERVOLTAGE. The generator’s hydrogen flow rate is displayed on the right side of the LCD. The present flow rate is displayed as a percentage of the maximum flow rate for the system. If the system is running at 25% the flow rate is approximately 300cc/minute for the H2-1200 or 9800 and 200cc/minute for the H2-800. As the system generates hydrogen, the output pressure is constantly monitored by a pressure transducer with a stainless steel diaphragm. The transducer takes the output pressure and translates it into the output pressure reading for the LCD. During normal operation, when power is supplied to the cell, the output pressure should increase after the Start button is pressed and remain constant when pressure is reached. If these conditions are not met, the excessive flow detection system initiates. An excessive flow error can be caused by running the system above its rated capacity (maximum flow rate) or by an internal leak. For example, this might occur if you are trying to fill too large a volume, or if the gas connections to the external equipment or within the generator have leaks. The system employs a timer to determine whether the flow is excessive. The excessive flow timer (EFT) initializes if the system is supplying a maximum amount of current to the cell but cannot build pressure. If still unable to build pressure after the timer lapses, the system shuts down the generating power, and the EXCESSIVE FLOW message is displayed on the LCD. If any error occurs, a system error message is displayed. If more than one error is encountered, the system will display each message in turn. Detectable errors include EXCESSIVE FLOW, ADD WATER, CHANGE WATER, PURIFIER ERROR, CELL OVERVOLTAGE, and WATCHDOG TIMER.
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Bulletin TI-H2-1200J
Chapter 2
Description
Refer to the Error Conditions procedure (page 28) to determine the exact nature of the error that has occurred. If the error condition has been corrected, pressing the Start/Select button removes the error message from the LCD. After correcting any problems, restart the system. After the purifier warms up, the LCD will prompt you to press the Start/Select button to start generating hydrogen. A relief valve provides for safety venting of the hydrogen if excessive pressure builds up in the cell. A port on the rear of the generator allows you to vent the hydrogen to an exhaust system within your facility if desired. Warning:
Normal precautions for any hydrogen supply should be taken when using the generator. DO NOT use in a sealed or unvented room. DO NOT use in close proximity to open flame or other ignition sources.
The pure, dry, pressurized hydrogen is supplied through the Hydrogen Output Port located on 1 the back of the generator (see Figure 2-3). This port is a convenient /4’’ tube fitting. The output pressure is adjustable using the Pressure Regulator, located at the top of the generator.
Figure 2-3. Hydrogen Generator - Rear View.
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Chapter 3
Installation & Connections
Generator Location The hydrogen generator should be located on a flat, level, shock-free surface for proper operation. The electrical components inside the generator produce heat, and the case will become warm to the touch. Do not place the generator over a source of heat, as this may cause the generator components to overheat. Maintain adequate air flow around the generator to reduce heat buildup. Do not block the vents located on the left hand side and the back of the hydrogen generator. Do not locate the generator in a sealed or unvented room, or in close proximity to open flame or other ignition sources. Also, do not locate the generator where it will be subjected to freezing temperatures. The generator is designed to operate in temperatures from 40-100°F (4-38°C). Caution:
Use both hands when moving the generator, and carry the generator only from the bottom.
Warning:
Remove all red tape from the generator. On the back of the unit, remove it from the bleed outlet. Also remove it from the two water bottle caps located under the top cover. Remove the freeze indicator and any other instructions if taped to the generator.
Filling the Water Tank If the water level becomes too low or the water quality is insufficient, the generator will automatically shut down. Water quality is determined by the electrical conductivity of the water, and should have an initial resistivity of at least 5 Megohm-cm, with several megohms desirable. Parker Hannifin Corporation has designed a water purification system called the HydroGen™ Mate, that provides high purity deionized water for all methods of filling the hydrogen generators. The HydroGen™ Mate purifies standard tap water to deliver high quality deionized water with resistivity greater than 5 Megohm-cm. Model 72-230 is used for manual filling of the units and is equipped with a dispensing gun. Model 72-231 is designed for connecting directly to the inlet of the hydrogen generator as an external pressurized water source. Use only deionized water in the generator to prevent contamination of the cell assembly. Water containing metallic impurities will damage the cell and will be cause for voiding the warranty. Cell contamination is a cumulative and irreversible process, eventually resulting in an OVERVOLTAGE condition and cell failure. Use only clean glass or plastic (HDPE only) containers to supply water to the generator. You may be using one of these four methods of supplying water to the generator: •
Use the Parker Balston HydroGen™ Mate for automatic water feed
•
Manually fill tanks
•
Gravity feed tanks from an external reservoir
•
Use a pressurized deionized water source
Follow the directions on page 9 that apply to the method selected.
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Bulletin TI-H2-1200J
Filling the Generator Manually If you are manually adding water to the water tank in the generator, make sure that the ‘‘water inlet plug’’ is always inserted in the Water Inlet Port on the back of the generator. Supply deionized water to the generator using the following procedure: 1.
Open the top door of the generator and unscrew the fill caps of both water tanks.
2.
Fill both tanks with deionized, distilled water until the water level in each tank is steady at the FULL line. Approximately four liters of water are required to completely fill the generator.
3.
Before replacing the caps, make sure that the deionizer bags are installed correctly as described on page 10.
Caution:
Do not overfill the water tanks. The water level should be kept below the port on the top inside of the tank.
Gravity Feed From External Reservoir 1.
With the round external water fitting connected to the Water Inlet Port on the back of the generator (see Figure 3-1), fill the external reservoir with deionized distilled water. The ‘‘external water insert’’ is supplied with a length of Tygon™ tubing for connection to the reservoir.
2.
Check to make sure that the water level in each tank in the generator is initially steady at the FULL line. Approximately four liters of water are required to completely fill the generator.
External Pressurized Source When connected to a pressurized water source (maximum pressure is 100 psig), you must use a recirculating loop at the generator to ensure that only fresh deionized, distilled water is used. 1.
With the hexagonal external water fitting connected to the Water Inlet Port on the back of the generator (see Figure 3-1), connect the generator to the pressurized source and turn on the water supply. The ‘‘external water insert’’ is supplied with a length of Tygon™ tubing for connection to the water source.
2.
Check to make sure that the water level in each tank in the generator is initially steady at FULL line. Approximately four liters of water are required to completely fill the generator.
Figure 3-1. External Water Fittings for Gravity or Pressure Feed. 9
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Chapter 3
Installation & Connections
Installing the Deionizer Bag A deionizer bag hangs in each of the water tanks to remove small amounts of impurities introduced into the water supply from the generator itself. The following procedure describes the initial installation after the tanks have been filled with high quality deionized water. Warning:
Use of the deionizer bags is not a substitute for good quality water. They are simply a final decontamination stage to further protect the generator cell from irreparable damage.
1.
Remove the deionizer bag from the protective packaging.
2.
Inspect each bag thoroughly for holes or tears, indicated by loose deionizer beads on its outer surface. If either bag is damaged in any manner, discard and replace it with a new deionizer bag assembly (P/N 7601132).
3.
Locate the ‘‘T’’ fastener, connected to one end of the deionizer bag. Insert the free end of the ‘‘T’’ fastener through the hole in the center of the water tank cap. Push the fastener through the hole until it is securely attached.
Warning:
Do not allow foreign material to fall into the water tanks while their caps are removed. Water quality may be compromised, or tubing blockage can occur.
4.
Insert the deionizer bag into the water tank. Position the bag so that it does not block the outlet port at the bottom of the tank, and screw the cap back onto the water tank. Make sure that the vent hole in the cap is not blocked or restricted.
5.
Repeat this procedure with the second deionizer bag and water tank.
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Bulletin TI-H2-1200J
Connecting the Power Warning:
For system operating at voltages other than 117 VAC or 220 VAC, a locallyapproved 3-prong plug may be required to properly power the generator. Proper wiring specifications are given below. Prevent electrical shock through the use of proper plugs and good earth ground connections.
Line (L)
Black Lead
Neutral (N)
White Lead
Earth (E)
Green/Yellow Lead
1.
Make sure that the Power switch on the back panel is in the OFF position.
2.
Verify that the proper fuses are installed using the table below. Voltage
Fuse
P/N
96-106 VAC 105-129 VAC 207-253 VAC
8.0 amp 6.3 amp 3.15 amp
A03-0067 A03-0066 13216
3.
Connect the appropriate power cord to the rear panel of the generator.
4.
Connect the free end of the power cord to an appropriate power source. Be sure that the power cord and receptacle provide a good earth ground for the generator.
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Chapter 3
Installation & Connections
Gas Connections Pure, dry hydrogen at regulated pressure is available at the Hydrogen Output Port on the back of the generator. This port accepts 1/4" tubing, which can be connected to your equipment. An adapter fitting is provided to convert from a 1/4" to 1/8". Caution:
If your external equipment requires an uninterrupted supply of hydrogen, you must connect a supplementary hydrogen source to your equipment. Install a check valve on the Hydrogen Outlet Port to prevent reverse pressurization, which may damage the purifier and the membrane when using a supplemental hydrogen source. It is also required to install a check valve on the Hydrogen Outlet Port if two or more generators are plumbed together. The recommended Check Valve is Parker 4Z-C4L-1/3-EPR-SS. This check valve is stainless steel with an EPR seat and has a 1/3 psi cracking pressure.
Impurities are removed by the purifier and leave the generator through the Bleed Outlet found on the back panel. For safety reasons, do not connect the Bleed Outlet to any type of tubing or block off the port in any way as this may put back pressure on the generator and destroy it.
Multiple Generator Installations
Figure 3-2. Multiple Generator Installation Schematic, Model H2-1200 Series
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Bulletin TI-H2-1200J
Installation All installation, operation, and maintenance procedures for the Parker Balston generators should be performed by suitable personnel using reasonable care. Multiple generators can be plumbed together to increase flow capacity. For each generator installation set up, the following down stream Parker components are recommend; Shut off valve, 4Z-B6LJ-SSP; Check valve, 4Z-C4L-1/3-EPR-SS and a Porter Instrument flow controller VCD1000-270. These components should be installed as indicated in the figure below. Once each installation set up is complete, they can be connected together and plumbed to a 3way purge valve as shown (Parker P/N 4Z-B6XJ- SSP). The above components are necessary to prevent faulty operation of multiple generators and improve versatility.
• • • •
The shut off valve allows a single generator to be isolated from the other generators because of lack of demand or to set individual generator flow at start up. The check valve prevents one unit from back flowing another, if generator pressures are not exactly matched. The flow control valve allows the user to set output flow evenly between the generators for most efficient usage. The purge valve allows the hydrogen lines to be purged of impurities and aids in set up of generator flow rates.
Set up 1. Follow installation guidelines for: Generator Location, Filling Water Tank, Installing Deionizer Bag, Connecting Power, as indicated in H2-1200 IOM 2. Open Shut-Off valve on Installation 1, close Shut-Off valves on other generator Installations in the multiple generator assembly. 3. Turn 3-way purge valve to atmosphere and connect to a flow meter. 4. Follow Start Up procedure steps 1 to 6 in IOM 5. Set flow using the flow control valve to the required flow rate. Divide the flow evenly between the installed generators. For example if the demand is 2000cc/min at 90 psi and 2 generators are installed, set generator 1 at 1000 cc/min and 90 psig (generator 2 is set to 100cc/min also). 6. Close Shut-Off valve. This generator is now set at the required flow and pressure. 7. Repeat Set up steps 1 through 6 for generator Installation 2. 8. Repeat Set up steps 1 through 6 for any additional generators. Remember to close Shut-Off valves to the generators not being “set up”. 9. Once all generators are set to the required flow and pressure, purge the hydrogen lines by first turning the 3-way valve to pressurize the lines. Next turn the valve to vent to atmosphere allowing the gas to vent for 2 minutes. Repeat the pressurize purge process at least 5 times before allowing flow to the instrument
Operation Follow all other H2-1200 IOM installation and operation recommendations. 13
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Chapter 3
Installation & Connections
Initial Startup After all of the preceding preparations and connections have been made, the generator is ready for operation. The following instructions describe the initial startup procedure. Figure 3-3 describes the symbols used to identify the controls and indicators used on the generator. Front Panel
Control Buttons
Primary Function
Secondary Function
START Select
Start Hydrogen Flow
Make selections in CONFIGURE and SERVICE modes of the control module
STOP Next
Stop Hydrogen Flow
Cycle to next parameter in CONFIGURE and SERVICE modes of the control module.
Pressure Regulator Control knob
Located under top door. Turn clockwise to INCREASE output pressure
Front Panel Water Tank View Ports
Water tank full line
1. Make Water tank refill linesure that all gas Figure 3-3 Symbol Identification
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Bulletin TI-H2-1200J
Chapter 3
Installation & Connections
Start Up 1. If the line needs to be purged before the hydrogen can be used on the equipment, make sure a 3-way valve is installed in line directly upstream from the instrument. Note:
The recommended 3-Way Valve is Parker 4Z-B6XJ-SSP.
2. Make sure all gas connections are secure. 3. Set the Pressure Regulator under the top cover to minimal pressure by turning it in a counter-clockwise direction (the knob should move up) until it cannot be turned any more. 4. On the back panel, switch the Power Switch to the ON position. The LCD will display the WARMUP message. Next, the purifier temperature will be displayed until a purifier temperature of 600°C is reached (approximately 20 minutes) and then the remaining warm-up time will be displayed (for approximately 40 minutes more), for a total warm-up time of one hour. Note:
Except when the unit requires servicing, keep the Power Switch on, to prevent damage to the palladium membrane in the purifier.
5. When the “Press START” message appears, press the Start/Select button on the front panel. The water pump inside the unit will begin to self-prime for 20 seconds. The left side of the LCD will show the outlet pressure. The right side will show the present flow rate as a percentage of the generator’s maximum rated capacity. 6. Turn the pressure regulator in a clockwise direction to increase the outlet pressure. If 100 psig is required, turn the pressure regulator all the way in (clockwise) to the maximum value. If 40 psig is the desired outlet pressure then turn the regulator approximately 3 full turns (360°) clockwise. Note:
The greater the volume between the hydrogen generator and the instrument, the longer it will take to pressurize the line and the longer it will take for the display to indicate the set pressure.
7. Purging - If you have installed the Parker 3-Way valve in line and want to purge the lines, first turn the valve to the middle position to pressurize the lines. Next turn the valve to the vent port position to allow the hydrogen gas to vent for 2 minutes. Repeat the pressurization/purge routine at least 5 times before allowing flow to the instrument. 8. Flowing - Turn the three-way valve to the instrument flow direction. Adjust the flow controller (on the instrument) until the desired flow rate is reached, with a maximum of 1200 cc/minute for the 9800 or H2-1200, and 800 cc/minute for the H2-800.
Dual Unit Start Up 1. Install a check valve (see Figure 3-2 and page 12) on the outlet of each hydrogen generator and then plumb both outlets together. 2. Start the units in the same way as detailed above. 3. If two different pressures are required to run the application, such as Fuel and Carrier Gas for a Gas Chromatograph application, set both generators to the maximum of the two required pressures, in step 6 in Start Up section above. 4. Install a reducing pressure regulator in-line before the inlet of the instrument requiring the lower pressure (see Figure 3-2).
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Chapter 3
Installation & Connections
Controlled Venting When operating the generator for the first time, or after replacing any gas flow parts, the gas flow path will contain air. To obtain an initial hydrogen flow with less dilution, perform the controlled venting procedure described below.
Note:
1.
Set the Pressure Regulator to minimal pressure by turning it in a counter clockwise direction until it cannot be turned any further.
2.
When the Press START message is displayed, press the Start/Select button on the front panel.
3.
Turn the Pressure Regulator a small amount in a clockwise direction, while observing the pressure read-out on the LCD. Slowly adjust the pressure upward until the desired pressure is achieved.
4.
Purge the lines either through the connected equipment, or through the 3-way valve at the far end of the manifold (Figure 3-2).
5.
Allow the system to vent in this manner for ten minutes. The generator and associated plumbing should now be purged of air and ready for operation. To retain the maximum hydrogen purity provided by the generator, allow the manifold and the external equipment to be purged sufficiently. In some cases, a higher flow rate and a longer time may be required for the controlled venting procedure.
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Bulletin TI-H2-1200J
Chapter 3
Installation & Connections
Configuration Parameters When you have installed the generator and completed the gas connections, you can change the units used to display pressure. On most systems, the pressure is displayed in psi. If you choose to display the pressure in kPa instead, you will need to access the CONFIGURE mode of the control module. The CONFIGURE mode also permits you to change the default time for excessive flow error detection and shutdown. The EFT (excessive flow timer) can be changed for troubleshooting the instrument. The selections which are available for each function are listed below. Parameter
Selections Available
Language
English
Pressure
psi, kPa System default: psi
EFT
39 seconds to 10 minutes System default: 1 minute
Baud Rate
I/O=Off, 1200, 2400, 4800, 9600, 19.2K System default: 19.2K
System deTo change one of the above selections through the CONFIGURE mode: 1.
Press and hold the front panel Start/Select button while switching the back panel power switch to the ON position. Keep holding the Start/Select button until the LCD displays the CONFIG message.
2.
Cycle through the parameters by pressing and releasing the Stop/Next button until the desired parameter is displayed (Language, Pressure, EFT, or Baud Rate).
3.
When the desired parameter is displayed on the LCD, press and release the Start/Select button until the desired selection is displayed.
4.
To save the selection, press the Stop/Next button. This will cycle to the next parameter. To make additional selections in CONFIGURE mode, repeat steps 2 through 4.
5.
To exit from CONFIGURE mode, press and release the Stop/Next button until the EXIT CONFIG message appears. Then press the (Start/Select) button to save the configuration parameter selections.
6.
To start the generator, press the Start/Select button when PRESS START appears on the LCD.
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Chapter 4 Operation
Operational Summary The following list summarizes the operational procedure required for using the hydrogen generator. Warning:
Under no circumstances should the generator be operated with the cover removed.
1.
For proper operation, the deionizer bags must be installed (refer to page 10).
2.
Fill the water tanks to the FULL LINE with deionized water. To use the external water fill option, connect the deionized water supply to the Water Inlet Port on the back panel of the generator using the proper fitting (see Figure 3-1).
3.
Connect your downstream equipment to the Hydrogen Outlet Port on the back panel of the generator.
4.
Properly adjust your external flow controlling devices so there is very little flow.
5.
Set the Pressure Regulator to minimal pressure by turning it in a counter-clockwise direction until it cannot be turned any more.
6.
Check that the power switch on the back panel is in the ON position. Check that the normal display mode is active.
7.
When the PRESS START message appears, press the Start/Select button on the front panel. The LCD will display the output pressure and the flow rate percentage, to show that hydrogen is being generated.
8.
If the generator has been idle for an extended period of time, or components have been replaced, perform the controlled venting procedure found on page 16.
9.
Adjust the pressure with the Pressure Regulator and then adjust the flow (see page 14 for details).
Caution:
Long periods of unattended operation are possible, provided that an adequate water supply is maintained. If more than 6 hours of standby service is anticipated, stop the generator (Stop/Next button), and vent the internal pressure.
Note:
To prolong the life of the purifier assembly, maintain power to the system unless extended periods of non-use are expected.
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Bulletin TI-H2-1200J
Water Level The water tanks hold sufficient water for continuous rated operation for approximately one and a half days. Water consumption is related to the rate of hydrogen gas used and ambient conditions, so the actual water consumption rate may vary. Provided the ADD WATER message has not appeared, you may add water to the tanks without disturbing normal operation. You may be using one of these three methods of supplying water to the generator. •
Manually Filling Tanks
•
Gravity Feed From an External Reservoir
•
Pressurized External Water Source
Follow the directions below that apply to the method that you are using. Parker Hannifin Corporation has designed a water purification system called the HydroGen™ Mate, that provides high purity deionized water for all methods of filling the hydrogen generators. The HydroGen™ Mate purifies standard tap water to deliver high quality deionized water with resistivity greater than 5 Meg-ohm/cm. Model 72-230 is used for manual filling of the units and is equipped with a dispensing gun. Model 72-231 is designed for connecting directly to the inlet of the hydrogen generator as an external pressurized water source.
Filling the Generator Manually If you are manually adding water to the water tank in the generator, make sure that the ‘‘water inlet plug’’ is always inserted in the Water Inlet Port on the back of the generator. Supply deionized distilled water to the generator whenever the water level falls below the REFILL line using the following procedure: 1.
Open the top door of the generator and unscrew the fill caps of both water tanks.
2.
Fill both tanks with deionized, distilled water until the water level in each tank is steady at the FULL line. Approximately four liters of water are required to completely fill the generator.
3.
Before replacing the caps, make sure that the deionizer bags are installed correctly as described on page 10.
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Chapter 4 Operation
Gravity Feed From External Source 1.
With the round external water fitting connected to the Water Inlet Port on the back of the generator (see Figure 3-1), fill the external reservoir with deionized distilled water. The ‘‘external water insert’’ is supplied with a length of TygonTM tubing for connection to the reservoir.
2.
Check to make sure that the water level in each tank in the generator is filled to the FULL line. Approximately four liters of water are required to completely fill the generator.
External Pressurized Source When connected to a pressurized water source, you must use a recirculating loop at the generator to ensure that only fresh deionized, distilled water is used.
Note:
1.
With the hexagonal external water fitting connected to the Water Inlet Port on the back of the generator (see Figure 3-1), connect the generator to the pressurized source (max. pressure = 100 psig) and turn on the water supply. The ‘‘external water insert’’ is supplied with a length of TygonTM tubing for connection to the water source.
2.
Check to make sure that the water level in each tank in the generator is filled to the FULL line. Approximately four liters of water are required to completely fill the generator. During normal operation, the water levels in each tank may not always be in equilibrium. Do not report this as a problem. As operation continues, equilibrium will be restored.
Schedule of Maintenance Items The following list is a quick summary of the maintenance schedule that will ensure proper operation of the hydrogen generator. Water Level / Refilling
When the water level approaches the REFILL line on the front panel of the generator, or whenever the ADD WATER message has been displayed.
Deionizer Replacement
Rinse the water tanks and replace the deionizer bags every six months, or whenever the CHANGE WATER message has been displayed.
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Bulletin TI-H2-1200J
Chapter 5 Maintenance
Maintenance All maintenance activities should be performed by suitable personnel using reasonable care. Periodic maintenance for the H2-800, H2-1200 and 9800 hydrogen generators is straightforward. These tasks include refilling the water on an as-needed basis, replacing the deionizer bags, and occasionally draining and rinsing the water bottles. Caution:
When performing routine service, carefully follow the instructions provided in this section to avoid injury or damage. Service should be performed by persons familiar with the service and safety requirements of electromechanical / electrochemical devices.
The following list is a quick summary of the maintenance schedule that will ensure proper operation of the hydrogen generator. Water Level / Refilling
When the water level approaches the REFILL line on the front panel of the generator, or whenever the ADD WATER message has been displayed.
Deionizer Replacement
Rinse the water tanks and replace the deionizer bags every six months, or whenever the CHANGE WATER message has been displayed.
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Chapter 5 Maintenance
Rinsing / Draining the Water Tanks The water tanks should be rinsed and the deionizer bags replaced every six months or whenever the CHANGE WATER message has been displayed. 1.
Press the Stop/Next button to stop generating hydrogen. Damage to the cell membrane can result if the unit is still generating when the water tanks are drained.
2.
If you are using the External Water Fill feature, turn off the external water supply. Alternatively, disconnect the external water supply from the Water Inlet Port on the back panel, and insert the ‘‘water inlet plug’’ into the Water Inlet Port.
3.
Vent the internal pressure from the generator by turning the Pressure Regulator counterclockwise until it will not turn any more.
4.
Lift the top door of the generator and unscrew the caps from the water tanks.
5.
Remove the caps and deionizer bags from the generator. Separate the deionizer bags from the caps and discard the bags.
6.
Connect the Drain Port Insert to the Drain Port on the lower part of the back panel of the 1 generator. Use the /4" tubing on the insert for convenient drainage.
7.
Press and hold the Stop/Next button. Keep holding the Stop/Next button while pressing and holding the Start/Select button. Keep both buttons pushed in until the message, SERVICE is displayed on the LCD. Then release both buttons.
8.
With the DRAIN WATER TANK function displayed, and the Drain Port Insert in place, press the Start/Select button. DRAIN WATER TANK remains displayed on the LCD. The water starts pumping from the water tanks out through the Drain Port on the back panel.
9.
When you have finished draining the water from the tanks, stop the pump by pressing the Start/Select button. The pump stops. The DRAIN WATER TANK message will still be displayed.
10.
Rinse and drain both tanks several times with fresh, deionized, distilled water. This is accomplished by filling the tanks, then draining them as described in steps 8 and 9.
11.
To exit the SERVICE mode, press and release the Stop/Next button until the message EXIT SERVICE displays.
12.
To return the system display to NORMAL mode, press the Start/Select button only once.
13.
Remove the Drain Port Insert.
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Bulletin TI-H2-1200J
Chapter 5 Maintenance
14.
If you are using the External Water Fill feature, remove the ‘‘Water Inlet Plug’’, then turn on or re-connect the external water supply to the Water Inlet Port. Or, manually fill the tanks to the FULL mark indicated on the front panel view port. The tanks hold approximately 4 liters of water.
15.
Inspect new deionizer bags thoroughly for holes or tears, indicated by loose deionizer beads on its outer surface. If either bag is damaged in any manner, discard and replace it with a new deionizer bag assembly (P/N 7601132).
16.
Remove the deionizer bag from the cap on the generator and dispose of it, then remove the new bag from the protective packaging.
17.
Locate the ‘‘T’’ fastener, connected to one end of the deionizer bag. Insert the free end of the ‘‘T’’ fastener through the hole in the center of the water tank cap. Push the fastener through the hole until it is secure.
Warning:
Do not let foreign material fall into the water tanks while their caps are removed. Water quality may be compromised, or tubing blockage can occur.
18.
Insert the deionizer bag into the water tank. Position the bag so that it does not block the outlet port at the bottom of the tank, and the cap can be screwed onto the tank. Make sure that the vent hole in the cap is not blocked or restricted.
19.
Repeat steps 15 through 18 with the second deionizer bag and water tank.
20.
When you are finished with any service to the unit, perform a controlled venting to purge any air from the system. Controlled venting is described on page 16.
21.
Start using the generator as described on page 15.
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Chapter 6 Troubleshooting
Troubleshooting This troubleshooting guide provides you with a logical sequence to follow while investigating problems. Warning:
Due to the pressure and the nature of the gases involved, use a protective face shield or other appropriate equipment whenever servicing or troubleshooting a hydrogen generator with the cover removed. Troubleshooting should be performed by someone familiar with the service and safety requirements of electrochemical equipment.
Typical Generator Operating Characteristics Electrochemical Cell Assembly Voltage: You can monitor cell voltage by accessing the SERVICE mode of the control module (page 25). Observed cell voltage varies with the flow rate of the hydrogen output. The observed cell voltage may vary +10% from the voltages shown below. However, the voltages should vary consistently across the various flow rates. For example, the observed cell voltage could vary consistently 3% above the voltages shown below for all of the flow rates. A problem is indicated if the variance is inconsistent across the different flow rate percentages. Flow Rate Percentage
H2-800 Cell Voltage
9800, H2-1200 Cell Voltage
20%
6.7 VDC
7.0 VDC
40%
6.9 VDC
7.3 VDC
60%
7.0 VDC
7.5 VDC
80%
7.1 VDC
7.8 VDC
100%
7.3 VDC
8.1 VDC
Cell Overvoltage: Cell overvoltage occurs when the voltage across the terminals of the cell assembly exceeds the preset voltage of 11.0 VDC. Note:
The cell assembly acts as a battery and maintains a voltage of 0 to 8 VDC across the terminals for some time after power has been removed.
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Bulletin TI-H2-1200J
Excessive Flow Detection: The circuitry of the generator is designed to stop the generation of hydrogen if the system cannot maintain or increase pressure. The cell pressure is monitored by a pressure transducer. When power is supplied to the cell, the cell pressure should increase after startup and remain constant when operating. If these conditions are not met, the excessive flow detection system initiates a timer. If the system cannot build pressure before the excessive flow timer (EFT) lapses, the system shuts down the generating power to prevent damage to the cell. When the generator is built, the EFT parameter is set to a one minute default time. The default time for the EFT timer is selectable through the CONFIGURE mode of the control module (page 16). The excessive flow detection system can be temporarily overridden for troubleshooting purposes through the SERVICE mode of the control module (page 26). Warning:
The excessive flow detection system can be temporarily re-configured or overridden for troubleshooting. However, this is an important safety function for the system and the excessive flow timer (EFT) should never be disabled for everyday use.
Low Water Detection: The low water condition is detected by a signal between two electrodes found in the back of the right water tank. If there is no water, a shutdown signal is generated which will shut off power to the cell assembly.
Change Water Detection: The quality of the water is monitored using a signal between the electrodes found in the back of the right water tank. If the resistivity of the water falls below an optimal level, a shutdown signal is generated which will shut off power to the cell assembly.
Pressure Regulator The control knob of the Pressure Regulator allows mechanical control over the pressure of the outgoing gas supply. The pressure of the outgoing gas supply is monitored by the pressure transducer and translated into the pressure reading which is displayed on the LCD. The flow rate is displayed as the percentage of maximum flow rate.
Cell Pressure Under normal operating conditions, the system maintains the internal cell pressure at 140± 1 psi (965 kPa).
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Chapter 6 Troubleshooting
Relief Valve The cell assembly relief valve is set to open when the internal cell assembly pressure reaches 175±5 psi (1172±5 kPa).
Water Level A capacitive level sensor outside the cell assembly maintains the correct level of water within the electrochemical cell. If the water level is too high, a solenoid valve releases some of the water from the electrochemical cell assembly.
Purifier Temperature The purifier heater maintains temperature in the palladium purifier above 600°C. If the purifier does not reach the threshold temperature and maintain it, the system cannot be run.
The Service Mode The SERVICE mode of the internal control module gives you access to information that will help in troubleshooting. You can display the current temperature of the purifier, the cell voltage, and the pressure within the electrochemical cell. You can also access ROM information, and display the error bits (page 27). Caution:
You can access the SERVICE mode when the generator is operating. However do not initiate the Drain Water Tank function while the system is generating hydrogen. To use the Drain Water Tank function refer to page 21.
To access the SERVICE mode: 1.
If you are generating hydrogen: Press and hold the Start/Select button. Keep holding the Start/Select button while pressing and holding the Stop/Next button. Keep both buttons pushed in until the message, SERVICE, is displayed on the LCD. If you are not generating hydrogen: Press and hold the Stop/Next button. Keep holding the Stop/Next button while pressing and holding the Start/Select button. Keep both buttons pushed in until the message, SERVICE, is displayed on the LCD.
2.
After releasing both buttons, the DRAIN WATER TANK function is displayed on the LCD. Skip this function by pressing the Stop/Next button. Cycle through the SERVICE mode functions by pressing and releasing the Stop/Next button until the desired function is displayed. The sequence of the messages and an example display for each message are shown in the following table.
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Bulletin TI-H2-1200J
Chapter 6 Troubleshooting
Service Mode Functions:
Caution:
Function
Example Messages
Drain Water Tank
Drain Water Tank
EFT Status
EFT: 1:00
Purifier Temperature
Heater = 600°C
Cell Voltage
Cell = 6.6 V
Cell Pressure
Cell = 140 PSI
ROM Information
R; v.vv; ccccw Where R is the revision; v is the version number; c = checksum, w = warm start (if displayed).
Display Bits
P = 00 S = 00 L = 00
Exit Service
Exit Service
The Excessive Flow Timer (EFT) is capable of temporarily being turned off, if necessary, during troubleshooting. However, you must re-enable the EFT before resuming normal operation of the generator. If the EFT is turned on, the EFT Status message will be ‘‘EFT’’ along with the time selected. If the EFT is turned off, the EFT Status message will be ‘‘OFF’’. Toggle the EFT Status on and off by pressing the Start/Select button while the EFT status is displayed. When you have finished using the SERVICE mode: 1.
To exit from the SERVICE mode, press and release the Stop/Next button until the message, EXIT SERVICE displays.
2.
To return the system display to NORMAL mode, press the Start/Select button.
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Chapter 6 Troubleshooting
ROM Information and Display Bits These two functions, which you can access in the SERVICE mode of the control module, as described below:
ROM Information: ROM information displays the firmware revision letter and the firmware version number, followed by the four-digit checksum. The checksum is used to verify that the total number of programmed bits is correct for the firmware revision level. A ‘‘w’’ after the checksum indicates that a ‘‘warm start’’ was performed. If there is no ‘‘w’’, the startup was a ‘‘cold start.’’ A warm start occurs if the system resets without loss of power having occurred. A cold start occurs when the power is applied to the system.
Display Bits: Display Bits let you look at the hexadecimal codes as an aid in troubleshooting the sensors and the analog control board. The hexadecimal codes stand for the error bits which are sensed. There are two types of error bits which you can interpret: sensor bits and latched bits. Sensor bits are indicated by ‘‘S’’ before the numeric code. Latched bits are indicated by ‘‘L’’ before the numeric code. Each error code that is displayed can stand for a single error or a sum of errors.
Bit Definitions: Hexadecimal Code Value
Definition
04
Low Water
02
Bad Water
01
Hydrogen Leak (external sensor)
Sensor bits are displayed for the sum of all errors which are being sensed in real time. If LOW WATER and BAD WATER are being sensed, S=06 displays the sum of 04 and 02. Latched bits are stored for any momentary error sensed; all latched error bits are summed until the Start/Select button is pressed. If two errors have been sensed, i.e., LOW WATER and BAD WATER, the display reads L=06. The latched bit error display is reset by pressing the Start/Select button. If L=00 is displayed, the bits have been reset, or there have been no errors sensed.
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Bulletin TI-H2-1200J
Chapter 6 Troubleshooting
Error Conditions When the system has been stopped by an error condition, use the following procedure to isolate the problem: 1.
If the ADD WATER message is displayed, add water as described on page 18.
2.
If there are no other errors displayed, press the Start/Select button to remove the error message from the LCD.
3.
Press the Start/Select button when the PRESS START message appears. Monitor the generator for about 10 minutes, and watch for any other system errors. If the EXCESSIVE FLOW message is displayed, there is a leak or a perceived leak in the gas flow path. Check that all external connections are gas tight, and that the volume of the external equipment is not too great for the rated output of the generator. If the CHANGE WATER message is displayed, poor water quality is indicated. Rinse the water tanks and change the deionizer bags as described on page 21. If the CELL OVERVOLTAGE message is displayed, a water pump fault is likely. Check the water pump connections. Check the water supply. If the water supply or the water pump are not at fault, the CELL OVERVOLTAGE error could indicate a failing generator cell which should be replaced. If the PURIFIER ERROR message is displayed, the palladium purifier is not heated to temperature. This usually indicates an attempt to start the generator before the purifier is warmed up. Check the connections to the purifier. If the error cannot be corrected by completing the purifier warm-up cycle, this indicates a failure of the purifier which must be replaced. If the WATCHDOG TIMER message is displayed, the system failed to reset when power was applied. Press the Start/Select button to reset the system and clear the message. If you are unable to clear the message, a firmware or hardware error exists. If the HYDROGEN LEAK message is displayed, a leak in the external equipment is indicated. Check that all external connections are gas tight. External leak detection is available only if you have an external hydrogen detecting device installed. This device must provide a 5 volt digital signal between pin 8 (+) and pin 9 (ground) of the External Control connector on the back of the generator when a hydrogen leak is detected. Correct the leak and press the Start/Select button to reset the system and clear the message.
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Chapter 6 Troubleshooting
Troubleshooting Guide All troubleshooting activities should be performed by suitable personnel using reasonable care. The following table lists possible symptoms, probable causes and remedies for problems that may be encountered while using the hydrogen generator. Caution:
Do not allow the generator cell assembly to become completely dry or leave the any of the caps off after performing maintenance operations. If the cell assembly dries out, permanent damage to the cell will result.
Caution:
Do not use commercial-type leak detection fluids on plastic parts in the generator. These fluids may cause cracking and crazing, leading to ultimate failure. Use a solution of 4-5 milliliters of liquid dish washing detergent in one liter of distilled water.
Warning:
Due to the pressure and nature of the gases involved, use a protective face shield or other appropriate equipment whenever servicing or troubleshooting the generator with the cover removed. Troubleshooting should be performed by someone familiar with the service and safety requirements of electrochemical equipment.
Caution:
This product is shelf life sensitive. Do not store for more than 3 months prior to installation and operation.
Note:
To arrange for system service, contact the Technical Services Department at 1-800-343-4048, 8AM to 5PM Eastern Time (North America only), or email at
[email protected]. For other locations, please contact your local representative. Please have the serial number available when calling for assistance.
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Bulletin TI-H2-1200J
Chapter 6 Troubleshooting
Symptom No gas output -No LCD Display
Probable Cause Disconnected power
Remedy Connect to power source
No gas output -Power switch ON
Blown fuse
Replace fuse
Power switch failure
Bad Power Switch Contact Parker Hannifin Technical Service Bad Power Supply Contact Parker Hannifin Technical Service
Power supply failure
No gas output -Pressure displays on LCD -0 to 8% flow rate displays
Gas flow may have been closed off external to the generator.
Check to see if a shutoff valve is closing off the external gas flow. Open external valve.
No gas output -Power switch ON -EXCESSIVE FLOW error is displayed.
Leak in external equipment hookup
Locate and repair any external leaks.
Internal leak
Locate and repair any internal leaks. Typical problem areas are: -Port fittings on the cell -Tubing connections at the top of the cell -Tubing connections
Leak at relief valve
No gas pressure - No pressure is displayed
No load connected
Bad relief valve assembly. Contact Parker Hannifin Technical Service Bad cell assembly. Contact Parker Hannifin Technical Service Bad cell assembly. Contact Parker Hannifin Technical Service Connect load
CELL OVERVOLTAGE -error display
No water
Check water supply.
Leak at generator cell
Cell membrane puncture
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Chapter 6 Troubleshooting
Symptom CELL OVERVOLTAGE -error display
Probable Cause Cell overvoltage
Remedy Check cell voltage (see page 23). If cell bad, contact Parker Hannifin Technical Service
Printed circuit board failure
Bad control board. (contact Parker Hannifin Technical Service)
Digital control board failure
Bad digital display board. (contact Parker Hannifin Technical Service)
Moisture at the bleed outlet
Back pressure in the purifier bleed outlet tubing
Check the angle of the bleed outlet tubing and whether the bleed outlet is venting properly
PURIFIER ERROR
Purifier failure
Bad purifier assembly. (Contact Parker Hannifin Technical Service)
No gas output -PURIFIER ERROR is displayed
Attempted to start generator before purifier reached sufficient temperature
Press Start/Select button and allow purifier to complete the warm-up time.
Purifier cannot reach sufficient temperature when warm-up time completes.
Bad purifier assembly. (Contact Parker Hannifin Technical Service)
No gas output -CHANGE WATER error is displayed
Water of insufficient quality is being used.
Drain and rinse water tanks as described on page 21. Fill the tanks with deionized, distilled water.
No gas output -ADD WATER error is displayed
Insufficient water
Change deionizer bags. Change/re-orient small deionizer bags in bracket behind water bottles. Add deionized, distilled water.
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Bulletin TI-H2-1200J
Chapter 6 Troubleshooting
Symptom
Probable Cause
Remedy
WATCHDOG TIMER error is displayed.
System failed to reset when power was applied.
Press the Start/Select button to reset the system and clear the message. If you are unable to clear the message, contact Parker Hannifin Technical Service.
HYDROGEN LEAK error is displayed.
External sensor detects hydrogen leak external to the generator.
Locate and correct any hydrogen leaks external to the generator.
Front panel Start/Select and Stop/Next control buttons do not select the control module function as requested.
Time delay between updates by the internal control module.
Press the buttons a little more slowly or a little more quickly, depending on whether The function is skipped or repeated.
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Chapter 7 Preparation for Storage or Shipment
Preparation for Storage Use the following procedure whenever you intend to store the hydrogen generator for any extended period of time. 1.
Vent the hydrogen pressure from within the generator.
2.
Turn the Pressure Regulator control counter-clockwise until it cannot be turned any more or until the knob spins freely.
3.
Cap the HYDROGEN OUTPUT port on the back of the generator, or leave it connected to your external equipment.
4.
Fill the water tanks approximately half full with deionized, distilled water. Check this water level every two months.
Preparation for Shipment If it becomes necessary to ship the generator by commercial carrier, make sure that you follow the procedure below to prevent damage. 1.
Vent the hydrogen pressure from within the generator.
2.
Drain all the water from the water tanks as described on page 21.
3.
Pack the generator carefully in the original packing box or equivalent to prevent handling and transportation damage.
4.
You MUST ship the generator in a manner that will prevent freezing. Freezing temperatures will cause irreparable damage to the generator cell assembly.
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Trademark Acknowledgements Lexan ® is a registered trademark of General Electric Company Loctite ® is a registered trademark of Loctite Corporation Viton ® is a registered trademark of E.I. du Pont de Nemours and Company
Member of
Parker Hannifin Corporation Filtration and Separation Division 242 Neck Road Haverhill, MA 01835 Tel: 978-858-0505 Fax: 978-556-7501
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©Parker Hannifin Corporation
1987, 2007
ParkerPrinted Hannifin Corporation in U.S.A. Bulletin TI-H2-1200J Filtration and Separation Division Haverhill, MA • 1-800-343-4048 www.labgasgenerators.com
