Welker GSS-4PM Installation, Operation And Maintenance Manual Download Page 1

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INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

WELKER COMPOSITE GAS SAMPLER

MODEL

GSS-4PM

DRAWING NUMBERS

AD617BS
AD617CL

MANUAL NUMBER

IOM-022

REVISION

Rev. F, 10/22/2018

Summary of Contents for GSS-4PM

Page 1: ...INSTALLATION OPERATION AND MAINTENANCE MANUAL WELKER COMPOSITE GAS SAMPLER MODEL GSS 4PM DRAWING NUMBERS AD617BS AD617CL MANUAL NUMBER IOM 022 REVISION Rev F 10 22 2018 ...

Page 2: ... are registered trademarks of Welker Inc SAFETY 3 1 PRODUCT INFORMATION 4 1 1 Introduction 4 1 2 Product Description 4 1 3 Specifications 5 1 4 Equipment Diagrams 6 2 INSTALLATION OPERATION 9 2 1 Before You Begin 9 2 2 Installation 10 2 3 Start Up Procedures 13 3 MAINTENANCE 19 3 1 Before You Begin 19 3 2 Maintenance 20 3 3 Troubleshooting 25 3 4 Purging and Cleaning the Sample Cylinder 27 APPENDI...

Page 3: ... manual Correct installation and operation however are the responsibility of the end user Welkerreserves the right to make changes to this manualand allproducts in order to improve performance and reliability BEFORE YOU BEGIN Read these instructions completely and carefully IMPORTANT Save these instructions forlocal inspector s use IMPORTANT Observe all governing codes and ordinances Note to Insta...

Page 4: ...y actuation pressure is applied to the Vanishing Chamber collection cup collapsing the cup and fully displacing the trapped sample into the sample cylinder The GSS 4PM can be connected to a customer Programmable Logic Controller PLC or other signal control system to operate the solenoid Alternatively the GSS 4PM can be supplied with a Welker 4P Sample Frequency Controller or a Welker 6Tc Timer Con...

Page 5: ...ection MNPT MNPT Standard 1 MNPT Electrical Connection AC 110 V DC 6 V DC 12 V Standard DC 24 V Standard Sample Volume 0 065 cc Vanishing Chamber Collection Cup 0 22 cc Vanishing Chamber Collection Cup Standard 0 5 cc Vanishing Chamber Collection Cup 1 0 cc Vanishing Chamber Collection Cup 1 5 cc Vanishing Chamber Collection Cup Operation Diaphragm Operated Motor Features Inline Relief Integrated ...

Page 6: ...1 4 Equipment Diagrams Figure 1 GSS 4PM Connections Diagram 6 IOM 022 MODEL GSS 4PM REV F 13839 West Bellfort Street Sugar Land TX 77498 welker com Service Department 281 491 2331 ...

Page 7: ...GSS 4PM With Standard Probe Figure 3 GSS 4PM With LE 2SSKO Probe Mounted Liquid Eliminator 7 IOM 022 MODEL GSS 4PM REV F 13839 West Bellfort Street Sugar Land TX 77498 welker com Service Department 281 491 2331 ...

Page 8: ...Figure 4 LE 2SSKO Probe Mounted Liquid Eliminator Diagram 8 IOM 022 MODEL GSS 4PM REV F 13839 West Bellfort Street Sugar Land TX 77498 welker com Service Department 281 491 2331 ...

Page 9: ...s in this Installation Operation and Maintenance IOM Manual 2 The sample probe should be located in the least turbulent area of the flowing stream available i e not in a header or blow down stack and away from obstructions elbows and partially closed valves 3 Typically the Welker GSS 4PM is installed with a single probe The unique self purging design of the GSS 4PM uses process gas to supply the s...

Page 10: ...the process gas used to actuate the samplercannot be safely vented to the atmosphere Welkerrecommends connecting from the solenoid exhaust tubing to a flare 6 If the GSS 4PM is equipped with a Welker 4P Sample Frequency Controller refer to the Installation Operation and Maintenance IOM Manual for the 4P for wiring instructions 7 If the GSS 4PM is equipped with a solenoid connect from the PLC to th...

Page 11: ...egulator 12 Regulate the auxiliary instrument air supply to the pressure appropriate for the application The auxiliary instrument air supply should be between 40 and 60 psig In applications where pipeline pressure is greaterthan 1500psig additional instrument airmay be required to take a sample Increase the instrument airsupply and adjust the regulatorrelief valve as necessary To protect the diaph...

Page 12: ...e port on the probe base If the GSS 4PM is equipped with the optional LE 2SSKO and process gas will be used to pre charge the constant pressure cylinder remove the plug from the back of the regulator and then tube from this port to the pre charge valve on the constant pressure cylinder If the optional auxiliary instrument airsupply will be used to pre charge the constant pressure cylinder remove t...

Page 13: ...kerConstant Pressure Cylinderwill be used forsample collection proceed to step 11 Setting the Inline Relief The inline relief is designed to allow product to flow in one direction only Acting as a check valve the inline relief will ensure that sample pumped into the sample cylindercannot flow back to the pipeline even if pipeline pressure drops Figure 6 Inline Relief Adjustment Diagram 13 IOM 022 ...

Page 14: ... approximately 100psig above pipeline pressure To increase spring tension and raise the relief set point turn the spring adjusterclockwise To decrease spring tension and lowerthe relief set point turn the spring adjustercounterclockwise Each full clockwise turn of the spring adjusterincreases spring tension approximately 100psig 8 Replace the washer seal and then return the buttonhead screw to the...

Page 15: ...ose sample pump isolation valve D Figure 2 If the GSS 4PM is equipped with the optional LE 2SSKO close inlet P valve A and return P valve B Figure 3 15 Remove the buttonhead screw and washer seal from the end of the base 16 Insert a hex key through the base to the spring adjuster 17 Turn the spring adjuster to adjust the spring tension When sampling into a WelkerConstant Pressure Cylinder the pres...

Page 16: ...ging the Sample Cylinder Referto Gas Processors Association GPA Standard 2166 86 Obtaining NaturalGas Samples for Analysis by Gas Chromatography forfurtherinstructions on GPA recommended purge methods This method is only advisable if the sample cylinderwill be used in the same location to sample the same type of product 22 Purge the sample cylinder To purge the WelkerSC Single Cavity Cylinder cont...

Page 17: ... pressure cylinder and repair as necessary If the GSS 4PM is equipped with a standard probe slowly open sample pump isolation valve D Figure 2 If the GSS 4PM is equipped with the optional LE 2SSKO slowly open inlet P valve A and return P valve B Figure 3 34 Purge the tubing between the GSS 4PM and the constant pressure cylinder If the constant pressure cylinderis equipped with a purge valve open t...

Page 18: ...the product inlet valve on the sample cylinder Preparing for Sampling 42 Set the signal control system to the desired sampling frequency based on the sampling actuation equations provided Figure 7 If the GSS 4PM is equipped with a 4P refer to the Installation Operation and Maintenance IOM Manual for the 4P for instructions on setting the sampling frequency If the GSS 4PM is equipped with a 6Tc ref...

Page 19: ... it may adversely affect analytical instrument results Forsample exposed seals Welkerrecommends non hydrocarbon based lubricants such as Krytox Fornon sample exposed seals Welkerrecommends eithernon hydrocarbon based lubricants orsilicone based lubricants such as Molykote 111 Afterthe seals are installed the outerdiameterof shafts and innerdiameterof cylinders may be lubricated to allow smooth tra...

Page 20: ...nd return P valve B Figure 3 2 Turn OFF electrical power to the system and carefully remove all electrical connections 3 As necessary disconnect the tubing between the solenoid exhaust and flare 4 As necessary disconnect the auxiliary instrument air supply 5 As necessary relieve pressure from the tubing connecting the GSS 4PM to the sample cylinder 6 Remove the GSS 4PM body from the standard probe...

Page 21: ...ield from the adapter 10 Push the collection cup and non extrusion disc out of the collection head shield 11 Lubricate the inside of the collection head shield and then install the replacement collection cup and non extrusion disc Welkerrecommends a non hydrocarbon based lubricant such as Krytox foruse with this unit 12 Return the collection head shield to the adapter and then install the holding ...

Page 22: ...the base to the spring adjuster Turn the hex key counterclockwise to unscrew and remove the spring adjuster from the base 17 Remove the spring and poppet from the base 18 Inspect the seating face of the poppet for scratches or other damage Replace as necessary Debris orscratches on the poppet will prevent positive shutoff of the relief 19 Return the poppet and spring to the base 20 Using a hex key...

Page 23: ...and shaft out from the lower diaphragm case 28 Remove the diaphragm spring from the shaft 29 Closely inspect the polished outer diameter of the shaft Scratches or pits may cause the seals to leak If scratches or pits are present the unit may need to be repaired or replaced Contact Welker for service options 30 Remove the snap ring and seal from the body side of the lower diaphragm case 31 Replace ...

Page 24: ...by hand 40 Return the spider seal to the body 41 Return the Vacuum Breaker disc to the body It should rest on top of the spider seal in the body 42 Using the machine screws and washers install the base to the body Figure 10 Tighten the machine screws by hand 43 Apply anti galling compound to the threads on the lower diaphragm case Welkerrecommends Never Seez oran equivalent anti galling compound f...

Page 25: ...he pump cycle is no faster than every four 4 seconds The sample cylinder or constant pressure cylinder is not filling The inlet valve on the sample cylinder is closed There is a leak between the sample outlet and the sample cylinder The inline relief setting is too high The GSS 4PM is unable to build pressure The Vacuum Breaker disc is installed incorrectly Ensure that the inlet valve on the sampl...

Page 26: ...The constant pressure cylinder is not pre charged The GSS 4 may be set at a faster sampling frequency than desired The purge valve on the constant pressure cylinder is open Pressure is leaking past the cylinder piston See Section 2 3 Start Up Procedures for instructions on setting the inline relief As necessary see Section 3 2 Maintenance for instructions on maintaining the inline relief Pre charg...

Page 27: ...ecessary 4 Purging is complete when no hydrocarbons and or contaminants are present in the analysis Purging With New Product Purge the sample cylinder with the product to be sampled This can be accomplished each time the sample cylinder is put into service See Section 2 3 Start Up Procedures for instructions on purging the sample cylinder with new product This method is only advisable if the sampl...

Page 28: ...elief Valves Welker IOM V178 l McDaniel Controls Inc All Stainless Gauges 1 2 2 4 and 6 Welker IOM V197 l Norgren R83 Cylinder Gas Pressure Regulator For Industrial Gas Systems Welker IOM V014 l Versa Products Company Inc C Series Valves Welker IOM V041 l Versa Products Company Inc C 316 Series Stainless Steel 3 Way and 4 Way Manual Latching and Key Valves Welker IOM V070 l Versa Products Company ...

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