Related Manuals for AADCO 737 Series
Summary of Contents for AADCO 737 Series
- Page 1 OPERATING INSTRUCTIONS AADCO 737-SERIES PURE AIR GENERATORS 737-1 & 737R-1 (1-LPM) AADCO INSTRUMENTS, INC. 145 South Miami Ave. Village of Cleves, OH 45002 U.S.A. Telephone: (513) 467-1477 Fax: (513)467-9009...
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Page 2: Table Of Contents
737-1 and 737R-1 PURE AIR GENERATORS TABLE OF CONTENTS Section Page LIST OF ILLUSTRATIONS................iii DAMAGED AND/OR LOST IN SHIPMENT PROCEDURE......1 INTRODUCTION....................2 INSPECTION UPON RECEIPT............... 3 INSTALLATION....................4 OPERATION....................6 PRINCIPLE OF OPERATION................11 PURIFICATION REACTORS.................12 METHANE REACTORS.................14 PERFORMANCE SPECIFICATIONS............16 PREVENTIVE MAINTENANCE..............18 10.0 TROUBLESHOOTING................... -
Page 3: List Of Illustrations
737-1 AND 737R-1 PURE AIR GENERATORS LIST OF ILLUSTRATIONS Figure Page FRONT PANEL....................30 REAR PANEL WITH “HOUSE” AIR ADAPTER..........31 INSIDE TOP VIEW..................32 INSIDE BENCH-MOUNTED, COMPRESSOR SIDE VIEW......33 ELECTRICAL TERMINAL STRIP VIEW............34 FRONT PANEL, RACK-MOUNTED UNIT............. 35 INSIDE RACK-MOUNTED, COMPRESSOR SIDE VIEW......36 INSIDE RACK-MOUNTED, METHANE REACTOR VIEW...... -
Page 4: Damaged And/Or Lost In Shipment Procedure
RETURNS TO AADCO INSTRUMENTS. If your property, while being returned to AADCO Instruments, Inc. is damaged in transit, it will be your responsibility to file a claim with the carrier. To assist you, we will secure an inspection report from the carrier and forward it to you. -
Page 5: Introduction
INTRODUCTION. The 737-1 (one-liter per minute) pure air generator is unique in the 737-series of pure air generators. It is the only unit which is completely self-contained. All components of the system, the air source and purification system, are within one cabinet. -
Page 6: Inspection Upon Receipt
INSPECTION UPON RECEIPT. Remove unit from shipping container WITHOUT INVERTING. For both bench-mounted (Figure 1) and rack-mounted (Figure 6), remove cover. WITHOUT INVERTING, place unit between two level surfaces so that the bottom is exposed. Remove the two red screws underneath the chassis which held the compressor, Figure 4 (14), stationary during shipment. -
Page 7: Installation
NOTE: SINCE MOST “HOUSE” AIR SUPPLIES ARE FROM OIL-PUMPED SOURCES, IT IS MANDATORY THAT THE AADCO INSTRUMENTS’ “HOUSE” AIR ADAPTER, AND ONLY THIS ADAPTER, BE USED. This is an oil-indicating filter and dramatically indicates when depletion is imminent. Use of this filter avoids contaminating the purification reactor and jeopardizing the purity of the output air. - Page 8 PUMP switch, Figure 1 (3). SPECIAL NOTE: AADCO Instruments, Inc. offers an automatic source selector for those unattended installations where both “house” air and the internal compressor are both available at the same unit.
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Page 9: Operation
OPERATION. Once the instructions outlined in Sections 3.0 thru 3.6 have been followed, whereby the air source has been connected to the pure air generator, leak checked, and the power cord inserted into a proper outlet, the BENCH-MOUNTED unit utilizing “house”... - Page 10 Continued. and electrochemical sensors are unaffected by slight variations in oxygen concentration and, therefore, do not require mixer-receivers. At this time, since there is no equipment connected to the unit which may be used to regulate the flow of pure air from the pure air generator, the operator must be certain that the capacity of the unit is not being exceeded.
- Page 11 4.13 Continued. NOTE: DURING THIS “BURN-IN” INTERVAL COPIOUS AMOUNTS OF WATER WILL BE DRIVEN FROM THE CATALYST AND WILL CONTAMINATE ANY INSTRUMENTS WHICH MIGHT BE CONNECTED TO THE PURE AIR GENERATOR AT THIS TIME. 4.14 Once the POWER switch has been depressed, the methane reactor will begin to heat.
- Page 12 4.19 Continued. At 45-psig output pressure the rotameter float should not indicate greater than 50% of full scale at any time since the rotameter is three atmospheres above ambient and the actual flow is √4 times the indicated flow. Therefore, any flow reading greater than 50% means that the flow capacity of the instrument is being exceeded and the output purity is being jeopardized.
- Page 13 INTERNALLY MOUNTED COMPRESSORS AS THE AIR SUPPLY TO THE PURE AIR GENERATORS, proceed as applicable in Sections 3.7 through 3.10. 4.26 Depress the POWER switch, Figures 1 and 6(1). The POWER switch lamp should light, there should be an audible click of the solenoid valve located on the inlet to the purification reactor, and the METHANE HEAT lamp, if present, should light.
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Page 14: Principle Of Operation
PRINCIPLE OF OPERATION. The 737-series pure air generators produce absolutely clean air from pressurized unclean air by chromatographic techniques. Pressurized air from a compressor or other source enters either the number 1 or number 2 column system (see Figure 10), depending upon the status of the solenoid valve located at the inlet of the column. -
Page 15: Purification Reactors
PURIFICATION REACTORS AADCO Instruments offers four basic types of purification reactors, designated “A”, “B”, “C”, and “D”. The “A” PURIFICATION REACTOR produces air of purity outlined in Section 8.0 and with an oxygen concentration of 20.8% ± 0.3%. In addition, the C0 concentration will be that of the ambient environment of the user’s locale (~350-... - Page 16 6.10 For those instances were pure air with high humidity is required, AADCO Instruments, Inc. will supply a humidifier to be located after the pure air generator. This device will operate under pressure and produce air with 50-90+% RH. This addition alleviates the drying problem associated with the premapure dryer used in some air monitoring instrumentation.
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Page 17: Methane Reactors
See Section 6.8. To remove the low level C0 formed during the catalytic reaction, AADCO Instruments, Inc. offers an in-line, see through , C0 -indicating scrubber (catalog no. 737-120). This device is offered for those users who may be concerned with... - Page 18 AADCO Instruments, Inc. offers free standing methane reactors (Models 153 and 154) for those individuals who wish to remove hydrocarbons and carbon monoxide from their own oxygen or air sources. It should be borne in mind that suitable halogen and sulfur scrubbers are required if these compounds are present when using these free-standing units.
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Page 19: Performance Specifications
PERFORMANCE SPECIFICATIONS. The AADCO 737-series pure air generators produce air with less than 0.005-ppm hydrocarbons, carbon dioxide, methane, ozone, sulfur dioxide, hydrogen sulfide, and oxides of nitrogen. Carbon dioxide level is either at ambient levels (~350-ppm) or less than 0.3-ppm, depending upon the model purification reactor selected. - Page 20 Any output flow greater than the stated maximum output flow for any particular model pure air generator produces air with purity worse than specifications. A nomograph is supplied (Figure 17) indicating output flow versus rotameter reading at STP. The operator must realize that once other equipment is connected to the pure air generator and output flow is controlled at the other equipment, the rotameter will then be pressurized and will indicate less flow than is actually being delivered.
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Page 21: Preventive Maintenance
PREVENTIVE MAINTENANCE. THE COMPRESSOR. All filters should be cleaned and replaced once every three months if the compressor operates continually and more often if the compressor is operated in a dusty environment. These filters are: (a) the inlet filter on the compressor, Figures 4 and 7 (15), and (b) the fritted filter within the water coalescer, Figures 5 and 7 (5), which is located between the compressor and the purification reactor. - Page 22 THE TIMER, PURIFICATION REACTOR AND PRESSURE REGULATOR. 9.10 Observing the INPUT PRESSURE gauge, Figures 1 and 6 (6), over a one or two- minute period will not only indicate that the compressor is operating properly, as in Section 9.4, but will also tell the operator whether the timer and purification reactor are performing as they should.
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Page 23: Troubleshooting
TROUBLESHOOTING. 10.0 10.1 THE COMPRESSOR. 10.2 If the compressor does not start when the PUMP switch is depressed, the problem may lie with: (a) the compressor, (b) the pump fuse, (c) the pump switch, or (d) the AC solid state relay. 10.3 If voltage is present when measured between terminals 8 and 4 of TS-1 (Figure 9), the compressor is defective. - Page 24 compressor must be capable of producing before replacement is mandatory. 10.10 THE PURIFICATION REACTOR 10.11 If, as in Section 9.8, a one or two-minute check of the rotameter reading, Figures 1 and 6 (7), as well as the OUTPUT PRESSURE gauge, Figures 1 and 6 (6), should both allow sudden drops during a one-minute observation: If the sudden change is only momentary with recovery within a second or two, it would indicate that the output pressure had been set too close to the low...
- Page 25 Continued 10.12 (b) (1) your finger or a screwdriver. If the AC voltage now appears at that disconnect, a simple bending of the micro switch arm with long-nosed pliers to activate the micro switch when the arm is on the greater diameter portion of the cam usually solves the problem.
- Page 26 10.14 Continued. opposite number is leaking when non-energized. Replace the defective solenoid valve. 10.15 Should the purge valve, Figures 3 and 8 (12), flow setting be accidently altered, consult the factory for loan of a proper rotameter and instructions for resetting. 10.16 THE METHANE REACTOR 10.17...
- Page 27 10.18 Continued. If resistance is zero, there is a short in the wiring inside the methane reactor. Allow the methane reactor to cool, then disconnect and remove the cooling coil, Figures 3 and 9 (9). Disconnect the tubing leading to the inlet of the methane reactor.
- Page 28 10.20 If the pyrometer indicates a temperature other than 290° ± 10°C and the METHANE HEAT lamp is cycling, the methane reactor is probably at proper operating temperature and either the pyrometer or the thermocouple is defective. Disconnect the thermocouple electrical disconnect between the methane reactor and the pyrometer.
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Page 29: Component Replacement
11.0 COMPONENT REPLACEMENT 11.1 THE PURIFICATION REACTOR. 11.2 Should it become necessary to replace the purification reactor: (a) order replacement unit from factory, being certain to specify type of purification reactor (“A”, “B”, “C”, or “D”) as indicated on the serial number tag, Figure 2 (7), on the rear of the unit;... - Page 30 at TS-1; (b) slip back the shrink tubing covering the POWER fuse holder and remove the switch’s black lead by sliding its quick-connect fitting off of the fuse holder; (c) using a 9/16 inch wrench as discussed in Section 11.9, complete its removal;...
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Page 31: Abbreviated Operating Instructions
12.0 ABBREVIATED OPERATING INSTRUCTIONS. 12.1 Once all shipping restraints have been removed from the compressor which is mounted within the cabinet of the pure air generator, the unit is ready for operation. 12.2 Plug the power cord into the proper power source (120V 60 Hz or 220V 50Hz). DO NOT ATTACH ANY EQUIPMENT THAT IS TO RECEIVE “ZERO”... -
Page 32: Parts List
Before attempting to replace any part or component be certain to read the blue AADCO Instruments, Inc. label on the outside rear wall of your pure air generator to determine the model number and operating voltage requirements for proper parts selection. - Page 34 Front «0«|...
- Page 35 Figure 2.-Rear Panel With ‘House* Air Adaptor...
- Page 36 Figure 3.-Top View, Inside...
- Page 37 Figure 4.-Inside View, Compressor Side...
- Page 38 Figure 5.-View, Electrical Terminal Strip...
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Page 39: Front Panel
Figure 6.-Front Panel, Rack-mounted Unit... - Page 40 Figure 7 .-Rack-mounted Unit, View, Compressor Side...
- Page 41 Figure 8.-Rack-mounted Unit, Methane Reactor...
- Page 42 Figure 9.-Wlring Diagram...
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Page 43: Pneumatic Diagram
Figure 10 -Pneumatic Diagram... - Page 44 Purification Reactor ONLY Source: Compressed Ambient Air 80 psi Input Pressure Time - MINUTES New Methane Reactor Input: Air with Dewpoint of -65°F Time - D A Y S Figure 11 -Moisture Output vs Time For Purification Reactor & Methane Reactor...
- Page 45 Sample Run with Sample Run with Cylinder Air AADCO 737-1 Pure Air Generator with "B" Reactor g u r e 1 2 - G a s C h r o m a t o g r a p h i c A p p l i c a t i o n o f P u r i f i c a t i o n R e a c t o r o f L o w L e v e l C o n t a m i n a n t s...
- Page 46 Pure Air Outlet To Using On Rear Of Equipment Generator Unit Figure 13 -‘Tee' Bleed Valve Installation...
- Page 47 Figure 14.-FID Response Comparisons *B" Reactor vs Cylinder Air...
- Page 48 Figure 15 -Chromatograms Illustrating Methane Reactor Efficiency...
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Page 49: Illustrations
PPM CO-2 From "A" Purification Reactor 5 4 0 4 : 1 0 6 : 3 8 Figure 16 -Comparison Of CO-2 Output From “A" vs “C" Purification Reactors... -
Page 50: Flow Nomograph
Figure 17 -Flow Nomograph... -
Page 51: Warranty
The expense of warranty shipping charges to the customer will be borne by AADCO Instruments, Inc. Service performed to rectify an instrument malfunction caused by abuse or neglect and service performed after the one year warranty period will be charged to the customer at the then current prices for labor, parts, and transportation. - Page 53 INPU» PRESSURE OUTPUT PRESSURE OUTPUT regulator OUTPUT Figure 1.-Front Panel...
- Page 54 Qure i c Panel...