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Operating Manual

Troubleshooting

This chapter has information to help you to find and correct potential problems
when using the TRACE GC Ultra Valve Oven.

Chapter at a Glance…

Leak Testing

.........................................................................................................43

Valve Switching

....................................................................................................44

Valve Plumbing

....................................................................................................45

The most common problem associated with valves and plumbing are leaks, valves
not switching properly, and valves not plumbed correctly.

Leak testing

Leak testing requires studying plumbing diagrams and system configurations.

1. Identify all gas sources leading into the flow path to be leak tested. Determine

if the gas sources are either a common source or if they are at the same bottle
pressure.

2. Be sure all components in the sample path will withstand the pressure being

applied to the system.

3. Be sure all possible gas outlets are blocked. This will require knowing how to

identify the various flow paths throughout the valving system to be sure vents
are blocked or bypassed.

NOTE

Leak should be detected using an electronic leak detector.

Содержание Valve Oven

Страница 1: ...Valve Oven Operating Manual ...

Страница 2: ...ity and will not be liable for any errors omissions damage or loss that might result from any use of this manual or the information contained therein even if this information is properly followed and problems still arise This publication is not part of the Agreement of Sale between Thermo Finnigan and the purchaser of a TRACE GC Ultra system In the event of any conflict between the provisions of t...

Страница 3: ...ated Section 17 Valves 17 Column 17 Chapter 2 Valve Installation 19 Introduction 20 Opening the Valve Oven 20 Installing Valves in the Heated Oven 21 Installing Valves in the Unheated Compartment 28 Installing Valves in the Valve Box 31 Valve Box for up to Six Valves 31 Valve Box for up to Two Valves 31 Configuring Valves 32 Gas Sampling Valves 32 Switching Valves 32 Chapter 3 Operation 35 Operati...

Страница 4: ... Troubleshooting 43 Leak testing 43 Valve Switching 44 Valve Plumbing 45 Appendix A Customer Communication 47 How To Contact Us 47 Europe 47 Africa Asia and Oceania 49 North Central and South America 50 Reader Survey 51 Glossary 53 Index 59 ...

Страница 5: ...GC Ultra Valve Oven Chapter 4 Troubleshooting has information to help you find and correct potential problems when using the TRACE GC Ultra Valve Oven Appendix A Customer Communication has contact information for ThermoFinnigan offices worldwide This appendix also contains a one page Reader Survey Use this survey to give us feedback on this manual and help us improve the quality of our documentati...

Страница 6: ...ts displayed on the computer screen or on a digital display This symbol illustrates menu paths to select such as File Open KEY NAME Bold uppercase sans serif font indicates the name of a key on a keyboard or keypad such as ENTER CAUTION This symbol alerts you to an action or procedure that if performed improperly could damage the instrument NOTE This symbol alerts you to important information rela...

Страница 7: ...ments Not all of them are used on the TRACE GC Ultra gas chromatograph and Valve Oven Symbol Description Direct Current Alternating Current Both direct and alternating current Three phase alternating current Earth ground terminal Protective conductor terminal Frame or chassis terminal Equipotentiality On Supply Off Supply 3 ...

Страница 8: ...mbol affixed to product Indicates that the user must refer to the manual for specific Warning or Caution information to avoid personal injury or damage to the product Caution risk of electric shock Caution hot surface Caution refer to accompanying documents In position of a bistable push control Out position of a bistable push control Symbol Description ...

Страница 9: ...l devices Acceptance Package PN 317 092 20 This folder contains required shipping documents and quality report forms Getting Started PN 317 092 30 This guide contains sequences for checking configuration installing detectors and making a first analysis with the TRACE GC Ultra Operating Manual PN 317 091 70 This manual provides descriptions of the TRACE GC Ultra hardware and software and instructio...

Страница 10: ... service records Maintenance and Troubleshooting Guide PN 317 091 80 This manual contains instructions for diagnosing and resolving operational problems Standard Operating Procedures PN 317 092 00 This manual contains instructions operating sequences and test criteria for final testing of the TRACE GC Ultra Spare Parts Catalog PN 317 092 10 This catalog contains a list of spare parts for the TRACE...

Страница 11: ...ual 11 1 Valve Oven Overview This chapter provides an overview to TRACE GC Ultra Valve Oven features and components Chapter at a Glance Introduction 12 Installation and Power Requirements 14 Valve Oven Components 16 ...

Страница 12: ...ing and or switching valves 1 8 OD packed columns and up to eight needle valves and four pressure regulators A large number of applications require this additional space for a correct analysis setup Figure 1 1 The Valve Oven Front View Rear View D E F G H I J K L M N O HEATED SAMPLE TRANSFER LINE HEATED SAMPLE TRANSFER LINE POWER AIR 800 kPa 120 psi Max WARNING USE ONLY THE ORIGINAL POWER SUPPLY F...

Страница 13: ...TRACE GC Ultra Valve Oven but without heating elements It provides an additional cold zone to accommodate up to four gas sampling switching valves up to two valves for liquid sampling restrictors and 1 8 OD packed columns It is therefore particularly suitable for engineered applications that can be exploited at ambient temperature for which multi column and or multi valve configurations sampling s...

Страница 14: ...lves these are factory tested to verify actuation but are NOT plumbed Plumbing can be performed upon availability of plumbing diagrams Materials needed Shop air or bottled air at a pressure of 60 80 psi Helium Nitrogen or other gas depending on your applications Installation and Power Requirements The Valve Oven is attached to TRACE GC Ultra and it is factory installed and configured On site insta...

Страница 15: ...lied to the valve oven when the main GC is turned on Turn the main GC power off before removing the valve oven heaters Valve oven power for the 24 V dc solenoid is supplied by an external power module that plugs into the rear of the valve oven This power module will accept input voltage from 106 V ac to 240 V ac A green light on the front of the valve oven Power On Indicator indicates when the pow...

Страница 16: ...ponents The TRACE GC Ultra Valve Oven consists of four major components as shown in Figure 1 3 Headed Enclosure Unheated Enclosure Valve Column Figure 1 3 TRACE GC Ultra Valve Oven Components 1 Heated Enclosure 4 Valve Driver Electronics 2 Unheated Enclosure 5 Columns 3 Valves 1 3 2 4 5 ...

Страница 17: ...nt or rear of the unit Unheated Section Unheated enclosures can contain the following two unheated pneumatic Valco liquid or gas sample injection valves up to four pressure regulators installed on the front of the unit and one mounted internally up to six in and out connections for sample loading vent flow measurement Valves Your TRACE GC Ultra Valve Oven has the following available valves standar...

Страница 18: ...Chapter 1 Valve Oven Overview Valve Oven Components 18 Operating Manual ...

Страница 19: ...r installing and configuring valves in the TRACE GC Ultra Valve Oven Chapter at a Glance Introduction 20 Opening the Valve Oven 20 Installing Valves in the Heated Oven 21 Installing Valves in the Unheated Compartment 28 Installing Valves in the Valve Box 31 Configuring Valves 32 ...

Страница 20: ...ts as the actuator travel for each valve can be different Opening the Valve Oven WARNING The Valve Oven cover can be very hot Use caution when removing the heated Valve Oven cover 1 Remove the top cover by releasing a single screw on the Valve Oven compartment rear panel 2 Slide the panel toward the rear about inch and lift away This exposes the heated Valve Oven cover and valve pneumatics 3 To re...

Страница 21: ... gas off before you start these procedures Step 1 Installing the Solenoid Valves 1 Locate the solenoid manifold in the rear floor of the valve compartment Figure 2 1 The space closest to the rear of the GC is reserved for pneumatic valve 1 next is valve two and so on A total of 6 pneumatic valves can be installed up to 4 in the upper compartment and up to 2 in the lower 2 Remove the rectangular sh...

Страница 22: ...Connect the cable from the solenoid valve Figure 2 4 to the proper timed event output jack Figure 2 2 located in the lower rear inside corner of the valve compartment Valve 1 is attached to timed event 8 TE8 Valve 2 is attached to timed event 7 TE7 and so forth Figure 2 2 1 Time Event Output Jack 2 Solenoid Manifold 3 Valve 1 Position 4 Valve 2 Position 1 2 3 4 ...

Страница 23: ...Oven 1 Remove any insulation found in the valve mounting hole The valve mounting hole is located in the lower Valve Oven heater block 2 Inspect the valve and actuator being sure the valve is in the counter clock wise ccw position The ccw position is when the mechanical stop is in the position noted in Figure 2 3 If the valve is not in the ccw position locate the square nut on the opposite end of t...

Страница 24: ...ing the actuator or the valve NOTE Handle the valve and standoff with care so the two pieces do not separate 5 Remove the collar attached to the valve standoff collar A Figure 2 5 by loosening the screw that secures the collar to the valve standoff This collar mounts to the Valve Oven heater block Step 3 Installing the Valve and Standoff 1 Locate the desired valve position in the heater block and ...

Страница 25: ...d cut it into two equal 12 pieces 2 Push one of the tube pieces into the lower fitting on the actuator assembly making sure it passes through the ferrule in the actuator fitting Tighten the nut and ferrule using a 3 8 open end wrench Use a backup 3 8 open end wrench on the mating piece that is screwed into the actuator 3 Place the other end of the tubing into the valve solenoid fitting located on ...

Страница 26: ...nnect the opposite end to the solenoid fitting NOTE The tubing can be released from the solenoid by pushing down on the solenoid fitting and pulling out on the tubing at the same time Step 5 Installing the Actuator to the Valve Standoff 1 Carefully fit the actuator into the valve standoff being sure not to rotate the valve 2 Once the two square fittings on the actuator and valve are coupled tighte...

Страница 27: ...ockwise Refer to Chapter 3 Operation for more information 2 Ensure that the valve moves freely in both directions 3 Refer to Figure 2 3 and inspect the valve stop when the valve is in both positions to ensure that the stop is at the travel limit on each side 1 Valve 2 Mechanical Stop Valve 3 Valve Standorf 4 M4 x 10 mm Screws 5 Collar A 6 Collar Set Screws 7 Heater Plate 8 Collar B 9 Actuator 10 S...

Страница 28: ...a mounting bracket included as part of the liquid valve assembly 1 Install the bracket to the lower portion of the actuator using two M4 x 10 screws Figure 2 6 2 Choose two mounting holes in the bracket that will allow the actuator and the valve to be oriented in a favorable direction Step 2 Connecting Gas Lines from the Solenoid to the Actuator NOTE Gas lines are much easier to connect to the act...

Страница 29: ...he other 1 8 in piece of nylon tubing and place it in the upper fitting on the actuator Be sure the tube passes through the ferrule in the fitting Tighten using the 3 8 open end wrench with backup 7 Connect the opposite end to the inside fitting on the solenoid Step 3 Installing the Valve Bracket Once the gas lines are attached to the actuator and the valves the actuator and bracket are ready to b...

Страница 30: ...pter 2 Valve Installation Installing Valves in the Unheated Compartment 30 Operating Manual Figure 2 6 Installing an Unheated Compartment Valve 1 Valve 2 Valve Mechanical Stop 3 Collar A 4 Actuator 2 3 4 1 ...

Страница 31: ...e Unheated Compartment Valve Box for up to Two Valves This option does not contain any heating elements Besides it is designed to accomodate only up to two valves It does not include any electronics and the solenoid valves controlling the valves actuators are droven by the TRACE GC Ultra The solenoid valves are connected to the timed event output located on the Mother Board of the TRACE GC Ultra S...

Страница 32: ...mpling valve or a switching valve Gas Sampling Valves Gas sampling valves have two positions Load and Inject These correspond to the OFF and ON positions respectively Gas sampling valves are plumbed so that counter clockwise position is Load and the clockwise position is Inject Figure 2 7 Mechanical Stop Positions for Gas Valves Switching Valves Switching valves have two positions On and Off Switc...

Страница 33: ...valve select Gas sampling If you want valve 1 to be a switching valve select Switching 4 Press ENTER 5 Press CLEAR to return to the Configure Valves menu 6 Repeat as necessary for the remaining valves in the Valve Oven or valve compartment Figure 2 8 Mechanical Stop Positions for Switching Valves yy yy yyy yyy Mechanical stop Clockwise CW Position Counterclockwise CCW Position ...

Страница 34: ...Chapter 2 Valve Installation Configuring Valves 34 Operating Manual ...

Страница 35: ...tions for the TRACE GC Ultra Valve Oven The valves can be operated manually using the keypad on the TRACE GC Ultra or automatically using the run table accessed on the TRACE GC Ultra keypad Chapter at a Glance Operating Valves Manually 36 Operating Valves Automatically 38 ...

Страница 36: ...ad Figure 3 1 The TRACE GC Ultra Keypad Showing the Valves Key 2 Scroll to the valve you want to operate The display may look like this If the valve is a gas sampling valve press On to place the valve in the Inject position or Off to place the valve in the Load position VALVES Inlet Valves 1 Gas Sample Load 2 Switching Off Valves Key ...

Страница 37: ...reflect the current valve state The default conditions of a switching valve determines which position ON or OFF the valve is in after GC initialization and after a run is completed The default conditions can be changed by selecting Switch vlv defaults from the VALVES menu Scroll to the switching valve you wish to change and press On or Off to enter its new default condition VALVES 2 Switching Off ...

Страница 38: ...GC Ultra Run Table display You can automatically switch valves by adding the desired valve event to the run table Figure 3 2 The TRACE GC Ultra Keypad Showing the Run Table Key Adding a Gas Sampling Valve Event to the Run Table 1 On the TRACE GC Ultra keypad press RUN TABLE RUN TIME EVENTS None Add run time event Ext event defaults Run Table Key ...

Страница 39: ...he valve returns to the Load position If the Inject for time exceeds the GC run time the GC will automatically reset the valve to the Load position at the end of the run 5 Repeat as necessary for any remaining sampling valves If you need to edit a run table entry select the entry to be edited and press ENTER NOTE To delete a run table entry select it and press CLEAR The TRACE GC Ultra will ask you...

Страница 40: ... TABLE 2 Scroll to Add run time event and press ENTER 3 Select Valve and press ENTER 4 Scroll to the Switching valve that you want to add and press ENTER The Run time parameter is the time into the run when the valve switches to the new position The Setpoint parameter is the position that the valve will go to at the selected time The On value usually designates a clockwise switch and the Off value...

Страница 41: ...s ENTER Select the position the valve is to return to by selecting ON or OFF and press ENTER With no run table entries selected press CLEAR multiple times to exit to the run event table OPERATING PROCEDURE Heating the Valve Oven 1 On the TRACE GC Ultra keypad press AUX 2 Scroll to Temperature Zones and press ENTER current value target value 3 Enter the target temperature and press ENTER NOTE Press...

Страница 42: ...Chapter 3 Operation Operating Valves Automatically 42 Operating Manual ...

Страница 43: ...esting requires studying plumbing diagrams and system configurations 1 Identify all gas sources leading into the flow path to be leak tested Determine if the gas sources are either a common source or if they are at the same bottle pressure 2 Be sure all components in the sample path will withstand the pressure being applied to the system 3 Be sure all possible gas outlets are blocked This will req...

Страница 44: ...he valve is rotated in the clockwise or counterclockwise direction Close inspection of the valve will indicate if the valve is being switched to its limits Figure 2 4 Actuator pressure should be 420 Kpa 60psig to 630 Kpa 90 psig Table 4 1 Leak Testing for Valves Symptom Cause Remedy Valve leaking between ports Defective rotor Replace rotor or valve Valve leaking around rotor Valve rotor not seatin...

Страница 45: ...plumbing diagram for your system setup See Chapter 3 Trace the plumbing from port to port to insure all connections are made properly Actuator leaking Replace actuator Valve event not set correctly Check valve event configuration and event in the run table Table 4 2 Causes and Remedies for Improper Valve Switching Cause Remedy ...

Страница 46: ...Chapter 4 Troubleshooting 46 Operating Manual ...

Страница 47: ...st to contact your local Thermo Finnigan office or affiliate Europe AUSTRIA Thermo Finnigan Austria wissenschaftliche Geräte GmbH Wehlistrasse 27 b A 1200 Wien Tel 1 33350340 Fax 1 333503426 Also serving BULGARIA CROATIA CZECH REPUBLIC HUNGARY POLAND RUMANIA SLOVAKIA SLOVENIA BELGIUM Interscience SPRL Scientific Parc Einstein Avenue Jean Etienne Lenoir 2 B 1348 Louvain la Neuve Tel 010 450025 Fax ...

Страница 48: ...136 Fax 1782 645121 ITALY Thermo Finnigan Italia S p A Strada Rivoltana 20090 Rodano Milan Tel 02 95059226 Fax 02 95059256 NETHERLANDS Interscience B V Tinstraat 16 Postbus 2148 4800 CC Breda Tel 076 5411800 Fax 076 5420088 NORWAY IT Instrument Teknikk Skandinavia A S PO Box 14 Grins Naeringspark 1 N 1345 Østerås Tel 67 149303 Fax 67 149302 PORTUGAL Unicam Sistemas Analiticos Lda Estrada da Rocha ...

Страница 49: ...heri East Mumbay 400 093 Tel 022 8376701 Fax 022 8368275 ISRAEL Burgal Analytical Instruments Software Ltd 4 Wallenberg Raoul Street Tel Aviv 69719 Tel 3 6490823 Fax 03 6490826 JAPAN Thermo Finnigan K K Nishi Shinjuku Toyokuni Building 2 5 8 Hatsudai Shibuya ku Tokyo 151 0061 Tel 03 3372 3001 Fax 03 3372 7051 JORDAN Hijaz Electronic Scientific Supplies Est P O Box 925133 Amman 11110 Tel 6 5359761 ...

Страница 50: ...tech Industrial Complex Singapore 128384 Tel 65 779 0007 Fax 65 2346252 Also serving INDONESIA MALAYSIA THAILAND PHILIPPINES SOUTH AFRICA Premier Technologies P O Box 173 Northriding 2162 South Africa Tel 011 4661410 Fax 011 4661313 TAIWAN R O C E Hong Instruments Co Ltd 2FL No 157 Sec 2 Fu Hsing S Road Taipei 106 Taiwan R O C Tel 02 2755 2266 Fax 02 2707 7693 U A E BDH Middle East P O Box 28637 D...

Страница 51: ...__________________ ________________________________________________________________________________________ Fax or mail this form to Thermo Finnigan Italia S p A Strada Rivoltana km 4 20090 Rodano MI ITALY Fax 39 02 95059388 Strongly Agree Agree Neutral Disagree Strongly Disagree The manual is well organized 1 2 3 4 5 The manual is clearly written 1 2 3 4 5 The manual contains all the information ...

Страница 52: ......

Страница 53: ...ixes and symbols A A ampere ac alternating current ADC analog to digital converter B b bit B byte 8 b baud rate data transmission speed in events per second C ºC Celsius CIP Carriage and Insurance Paid To cm centimeter CPU central processing unit of a computer CSE Customer Service Engineer D d depth DAC digital to analog converter dc direct current DS data system ...

Страница 54: ... Photometric Detector ft foot G g gram gain A measure of the ability of an electronic circuit or device to increase the magnitude of an electronic input parameter GC gas chromatograph GND electrical ground H h height h hour harmonic distortion A high frequency disturbance that appears as distortion of the fundamental sine wave HOT OC High Oven Temperature Cold On Column Injector HV high voltage ...

Страница 55: ...rotechnical Commission impulse See transient in inch I O input output K k kilo 103 or 1024 K Kelvin kg kilogram kPa kilopascal L l length l liter LAN Local Area Network lb pound LED light emitting diode LVOCI Large Volume On Column Injector LVSL Large Volume Injector M m meter or milli 10 3 M mega 106 ...

Страница 56: ...nute mL milliliter mm millimeter m z mass to charge ratio N n nano 10 9 negative polarity The inverse of a detector signal polarity nm nanometer NPD Nitrogen Phosphorous Detector O OCI On Column Injector OD outside diameter Ω ohm P p pico 10 12 Pa pascal PCB printed circuit board PDD Pulsed Discharge Detector PID Photoionization Detector ...

Страница 57: ...232 industry standard for serial communications S s second S SL Split Splitless Injector sag See surge slow average A gradual long term change in average RMS voltage level with typical durations greater than 2 s SOP Standard Operating Procedures source current The current needed to ignite a source such as a detector lamp surge A sudden change in average RMS voltage level with typical duration betw...

Страница 58: ...negative exponent with the denominator For example C min 1 instead of C min g L 1 instead of g L transient A brief voltage surge of up to several thousand volts with a duration of less than 50 µs U UFM Ultra Fast Module V V volt V ac volts alternating current V dc volts direct current VGA Video Graphics Array W w Width W Watt ...

Страница 59: ...chanical Stop Positions 24 Mechanical Stop Positions for Switching Valves 33 O Operation 35 Adding a Gas Sampling Valve Event to the Run Table 38 Adding a Gas Switching Valve Event to the Run Table 40 Heating the Valve Oven 41 Operating valves automatically 38 Operating valves manually 36 Overview 11 P Power Requirements 15 S Solenoid Manifold 22 Switching Valves 32 T Timed Event Output Jacks 22 2...

Страница 60: ...Index 60 Operating Manual ...

Страница 61: ...gure 2 3 Mechanical Stop Positions for both CW and CCW 24 Figure 2 4 Solenoid Manifold Edges 25 Figure 2 5 Installing the actuator to the valve standoff 27 Figure 2 6 Installing an Unheated Compartment Valve 30 Figure 2 7 Mechanical Stop Positions for Gas Valves 32 Figure 2 8 Mechanical Stop Positions for Switching Valves 33 Figure 3 1 The TRACE GC Ultra Keypad Showing the Valves Key 36 Figure 3 2...

Страница 62: ...Table 4 1 Leak Testing for Valves 44 Table 4 2 Causes and Remedies for Improper Valve Switching 44 ...

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