Page 3 - ABOUT THIS MANUAL; Rev; NOTE; REVISION HISTORY
07773A DCN6833 i ABOUT THIS MANUAL This Model 751H High Performance Zero Air Generator operation manual is comprised of multiple documents as listed below. Part No. Rev Name/Description 07773 A Model 751H Manual (this manual) 07839 A Model 751H Spare Parts List (Appendix A of this manual) 078370100 ...
Page 5 - SAFETY MESSAGES
07773A DCN6833 iii SAFETY MESSAGES Important safety messages are provided throughout this manual for the purpose of avoiding personal injury or instrument damage. Please read these messages carefully. Each safety message is associated with a safety alert symbol, and are placed throughout this manual...
Page 6 - CONSIGNES DE SÉCURITÉ
iv 07773A DCN6833 CONSIGNES DE SÉCURITÉ Des consignes de sécurité importantes sont fournies tout au long du présent manuel dans le but d’éviter des blessures corporelles ou d’endommager les instruments. Veuillez lire attentivement ces consignes. Chaque consigne de sécurité est représentée par un pic...
Page 7 - ARRANTY; CAUTION – Avoid Warranty Invalidation
07773A DCN6833 v W ARRANTY WARRANTY POLICY (02024G) Teledyne Advanced Pollution Instrumentation (TAPI), a business unit of Teledyne Instruments, Inc., provides that: Prior to shipment, TAPI equipment is thoroughly inspected and tested. Should equipment failure occur, TAPI assures its customers that ...
Page 8 - TABLE OF CONTENTS
vi 07773A DCN6833 TABLE OF CONTENTS A BOUT T HIS M ANUAL ........................................................................................................... I R EVISION H ISTORY ............................................................................................................... I ...
Page 9 - CO; LIST OF FIGURES
07773A DCN6833 vii 4.2.10 Hydrocarbon (HC) Scrubber ......................................................................... 24 4.2.11 NO-NO 2 Scrubber ......................................................................................... 25 4.2.12 Charcoal Scrubber ................................
Page 10 - LIST OF TABLES
viii 07773A DCN6833 LIST OF TABLES T ABLE 2-1: S PECIFICATIONS ................................................................................................................... 11 T ABLE 4-1: P OWER AND D EWPOINT C ONDITION I NDICATORS .................................................................
Page 11 - INTRODUCTION
07773A DCN6833 9 1 INTRODUCTION 1.1 Preface The 751H is an excellent source of clean, dry air for dilution calibrators. It also may be used as a source of purge air for permeation tube ovens, zero air for ozone generators, or combustion air for FID analyzers. The 751H has an oil-free and diaphragm-f...
Page 13 - SPECIFICATIONS AND APPROVALS; Specifications
07773A DCN6833 11 2 SPECIFICATIONS AND APPROVALS 2.1 Specifications Table 2-1: Specifications Parameter Specification Output 10 SLPM at 30 psig Max delivery pressure 30 psig Dewpoint < -20 C Dryer Regenerative heatless dryer with lifetime of greater than 5 years Output Concentration SO 2 <0.02...
Page 14 - Approvals and Certifications; Edition), Safety requirements for electrical equipment for
Specifications and Approvals Teledyne API M751H High Performance Zero Air Generator 12 07773A DCN6833 2.2 Approvals and Certifications The Teledyne-API Model 751H Zero Air Generator was designed, tested and certified for Safety and Electromagnetic Compatibility (EMC). This section presents the compl...
Page 15 - GETTING STARTED; matches the local power source.; CAUTION
07773A DCN6833 13 3 GETTING STARTED This section provides instructions on the proper installation and power up of the 751H. Refer to Figure 4-2 for the instrument layout and Table 2-1 for the specifications. NOTE Due to mounting screws through its case, the 751H is not considered waterproof. 3.1 Unp...
Page 16 - Instrument Panel
Getting Started Teledyne API M751H High Performance Zero Air Generator 14 07773A DCN6833 3.3 Instrument Panel Figure 3-1 shows the components in the Model 751H instrument layout that are pertinent to starting up the instrument. Figure 3-1: 751H Startup Connections
Page 17 - Electrical and Pneumatic Connections; Make the following pneumatic connections:; DRAIN; 51H to the INLET fitting of the Model 700 Calibrator with
Teledyne API M751H High Performance Zero Air Generator Getting Started 07773A DCN6833 15 3.4 Electrical and Pneumatic Connections 3.4.1 ELECTRICAL NOTE To maintain compliance with EMC standards, it is required that the power cord length be no greater than 3 meters. With the power switch in the “OFF”...
Page 18 - DO NOT BLOCK THE COOLING FAN ALWAYS KEEP LID OPEN WHEN; Turn on the instrument panel POWER SWITCH (; Storage and Transportation; vent any accumulated water through the water drain. (Standing H
Getting Started Teledyne API M751H High Performance Zero Air Generator 16 07773A DCN6833 3.5 Power-Up COOLING FAN Requirements The instrument panel cooling fan draws air IN and requires at least 6” (150 mm) of clearance for proper operation. NOTE: DO NOT BLOCK THE COOLING FAN; ALWAYS KEEP LID OPEN W...
Page 21 - OPERATION
07773A DCN6833 19 4 OPERATION 4.1 Overview Refer to Figure 4-1 for a diagram of the 751H pneumatic flow. The 751H dries and scrubs ambient air to produce zero air. To accomplish this, first the compressor draws air in through the intake filter and compresses it. At the compressor outlet, the air is ...
Page 26 - WARNING
Operation Teledyne API M751H High Performance Zero Air Generator 24 07773A DCN6833 4.2.9 Pressure Regulator The pressure regulator is set at 30 psig at the factory except for specially modified units. Should adjustment be desired, the regulator is accessible on the instrument panel. The adjustment k...
Page 27 - Scrubber
Teledyne API M751H High Performance Zero Air Generator Operation 07773A DCN6833 25 4.2.11 NO-NO 2 Scrubber The NO scrubber uses Purafil ® to oxidize NO to NO 2 . Purafil ® has a finite life and we recommend that it be replaced annually or sooner if the level of NO in the air is high. 4.2.12 Charcoal...
Page 28 - Cycles the four-way valve of the Regenerative Dryer.
Operation Teledyne API M751H High Performance Zero Air Generator 26 07773A DCN6833 Provision for voltage configuration is via a jumper plug (J5). All electrical connections are made by quick release connectors to aid in servicing. Refer to Figure 4-4 for the layout and to Appendix B for the intercon...
Page 29 - 8 Instrument Panel Indicator Lights; Table 4-1: Power and Dewpoint Condition Indicators
Teledyne API M751H High Performance Zero Air Generator Operation 07773A DCN6833 27 4.2.17 Dewpoint Sensor The dewpoint sensor ensures that the Regenerative Dryer maintains a dewpoint less than -20°C (up to the maximum flow rate). This will increase the life of the chemical scrubbers. When the dewpoi...
Page 31 - MAINTENANCE
07773A DCN6833 29 5 MAINTENANCE 5.1 Schedule WARNING There are high voltages present while the 751H is plugged in. CAUTION The operations outlined in this section are to be performed by qualified maintenance personnel only. Before performing any maintenance, cycle the power on/off and drain any wate...
Page 32 - Maintenance Mode; for excessive dirt or dust.; Checking Tubing
MAINTENANCE Teledyne API M751H High Performance Zero Air Generator 30 07773A DCN6833 5.2 Maintenance Mode When changing the media of the Charcoal Scrubber (Section 5.5) and the NO-NO 2 Scrubber (Section 5.6), the new media will contain some moisture due to humidity in the ambient air, consequently t...
Page 33 - Replacing the Charcoal Scrubber Media; which seals against the gasket.
Teledyne API M751H High Performance Zero Air Generator MAINTENANCE 07773A DCN6833 31 WARNING EVEN THOUGH THE INSTRUMENT PANEL POWER SWITCH IS OFF, THERE IS LINE VOLTAGE PRESENT AT THE POWER ENTRY TERMINALS, POWER SWITCH TERMINALS AND ON THE CONTROL BOARD. FOR ADDED SAFETY, REMOVE THE POWER CORD FROM...
Page 34 - Scrubber Media; Replacing the CO Scrubber; scrubbers to gain access to the hardware.; gently to settle the beads and top up to the 1/2” level.
MAINTENANCE Teledyne API M751H High Performance Zero Air Generator 32 07773A DCN6833 5.6 Replacing the NO - NO 2 Scrubber Media This procedure is identical to the charcoal scrubber replacement procedure except that the canister should be refilled with Purafil . NOTE After replacing the material in t...
Page 35 - Turn off power and unplug the 751H power cord.
Teledyne API M751H High Performance Zero Air Generator MAINTENANCE 07773A DCN6833 33 5.8 Replacing the Hydrocarbon (HC) Scrubber 1. Turn off power and unplug the 751H power cord. CAUTION WAIT FOR THE SCRUBBER TO COOL. THE SCRUBBER CASING AND THE COPPER COOLING COIL WILL BE VERY HOT. 2. Remove the si...
Page 36 - Servicing The Regenerative Dryer; molecular sieve into a suitable waste receptacle.
MAINTENANCE Teledyne API M751H High Performance Zero Air Generator 34 07773A DCN6833 5.9 Servicing The Regenerative Dryer It is unlikely that the Regenerative Dryer should ever need service. Should the molecular sieve become contaminated by oil or other external contaminants, the scrubber will need ...
Page 37 - the grooves and not caught up on the edge.
Teledyne API M751H High Performance Zero Air Generator MAINTENANCE 07773A DCN6833 35 19. Wipe the ends of the columns. These are the surfaces which seal against the o-rings. 20. Set the bottom of the columns into the lower manifold. Ensure that they are in the grooves and not caught up on the edge. ...
Page 39 - Regenerative Dryer’s 4-Way Valve; panel pressure gauge should not change.
Teledyne API M751H High Performance Zero Air Generator MAINTENANCE 07773A DCN6833 37 5.10 Changing the Regenerative Dryer’s 4-Way Valve 1. Remove the Regenerative Dryer from the chassis as described in Section 5.9 above. 2. Disconnect the two tubing connections and the electrical connection to the 4...
Page 40 - Filter Element Replacement; connects toward the DFU and pulling the tubing away.
MAINTENANCE Teledyne API M751H High Performance Zero Air Generator 38 07773A DCN6833 5.12 Filter Element Replacement 5.12.1 Intake Filter To service the intake filter (Figure 4-2): 1. Turn the filter cap counter-clockwise and remove from the filter housing. 2. Remove the filter screen and use compre...
Page 41 - TROUBLESHOOTING
Teledyne API M751H High Performance Zero Air Generator TROUBLESHOOTING 07773A DCN6833 41 6 TROUBLESHOOTING This section presents possible problems and their causes and solutions. CAUTION – Avoid Warranty Invalidation Failure to comply with proper anti-Electro-Static Discharge (ESD) handling may void...
Page 43 - APPENDIX A - SPARE PARTS
07773A DCN6833 A-1 APPENDIX A - SPARE PARTS Note Use of replacement parts other than those supplied by TAPI may result in non-compliance with European standard EN 61010-1. Note Due to the dynamic nature of part numbers, please refer to the Website at http://www.teledyne-api.com or call Technical Sup...
Page 47 - APPENDIX B - SCHEMATICS
