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Installation, Operation, and
®
Welker
Constant Pressure Cylinders with
CP-2G, CP-5G, CP-35G, and
CP-2G with Premium Purge
The information in this manual has been carefully checked for accuracy and is intended to be used as a guide for
the installation, operation, and maintenance of the Welker equipment described above. Correct operating and/or
installation techniques, however, are the responsibility of the end user. Welker reserves the right to make changes
to this and all products in order to improve performance and reliability.
© Copyright 2008, Welker, Inc.
Maintenance Manual
Tracker Tube
Models
13839 West Bellfort
Sugar Land, TX 77498-1671
(281) 491-2331 - Office
http://www.welker.com
Office
Office
Office
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Summary of Contents for Welker CP-2G
- Page 1 Welker equipment described above. Correct operating and/or installation techniques, however, are the responsibility of the end user. Welker reserves the right to make changes to this and all products in order to improve performance and reliability.
- Page 2 TABLE OF CONTENTS ® ® ® Welker , Welker Jet , and WelkerScope are Registered Trademarks owned by Welker, Inc. IOM-011 Page 2 of 20 CP2G, CP5G, CP35G Rev: F Last updated: 7/9/2018...
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Page 3: Specifications
If you have any questions, please call 1-800-776-7267 in the USA or 1-281-491-2331. The following procedures have been written for use with standard Welker parts and equipment. Assemblies that have been modified may have additional requirements and specifications that are not listed in this manual. - Page 4 SPECIFICATIONS The Constant Pressure Sample Cylinder is designed for use in systems where it is necessary to extract and isolate accurate product samples by maintaining a steady pressure from the pipeline to the cylinder. The cylinders are equipped with a magnetic indicator graduated scale set to specify...
- Page 5 • Welker recommends cleaning and leak testing of the cylinders after each use. • Because of the design of the cylinder and the incorporated seals, the process of emptying the cylinder will simultaneously wipe the walls of the device clean.
- Page 6 SPECIFICATIONS Refer to above diagram throughout manual IOM-011 Page 6 of 20 CP2G, CP5G, CP35G Rev: F Last updated: 7/9/2018...
- Page 7 • Claims for damages caused during shipping must be initiated by the receiver and directed to the shipping carrier. Welker is not responsible for any damages caused from mishandling by the shipping company. • When sealing fittings with PTFE tape, refer to the proper sealing instructions for the tape used.
- Page 8 INSTALLATION & OPERATIONS The pre-charge gas being used must be compatible with the seals in the cylinder. The relief valves and gauges must also be adequate for the pressures used when pre- charging. Connecting the cylinder pre-charge valve to the pipeline (pressurized gas pipeline only): •...
- Page 9 INSTALLATION & OPERATIONS • Use small diameter stainless steel tubing to connect from the cylinder’s pre-charge inlet valve to the valve on the return port of the probe (see Figure 4). If you have the premium purge model, connect from the sampler to the pre-charge inlet port (see Figure 3).
- Page 10 INSTALLATION & OPERATIONS If steps 2.2 Section 1 or 2.2 Section 3 are used to pre-charge, or if the cylinder is being used for continuous sampling and the pre-charge is not connected to the pipeline, it will be necessary to install an adjustable, resetting relief valve in order to relieve pre-charge pressure while continuous sampling.
- Page 11 Open the product purge valve to purge the system of any contaminants. Close the purge valve. Welker recommends plugging the purge valve when not in use. Open the sampler outlet valve.
- Page 12 INSTALLATION & OPERATIONS Carefully disconnect the cylinder from the sampler, allowing the trapped product between the sampler outlet valve and the product inlet valve to vent. Plug or cap all valves on the cylinder. Record pressure, locations, etc., on the information tag according to company policy. Check all fittings for leaks.
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Page 13: Maintenance
MAINTENANCE Prior to maintenance or disassembly of the unit, it is advisable to have a repair kit handy for the system in case of encountering unexpected wear or faulty seals. All maintenance and cleaning of the unit should be done on a smooth, clean surface. We recommend that the unit have annual maintenance under normal operating conditions. - Page 14 MAINTENANCE IOM-011 Page 14 of 20 CP2G, CP5G, CP35G Rev: F Last updated: 7/9/2018...
- Page 15 MAINTENANCE Make sure the unit is depressurized prior to maintenance. Remove the cylinder stands (Part 17). Remove the six nuts (Part 1) and the six tie bolts (Part 7). Remove the tracker tube clips (Part 6) and tracker tube seats (Part 18). Remove both the product end cap (Part 5) and the pre-charge end cap (Part 11).
- Page 16 Pressure up cylinder at one end with an inert gas supply and test for leaks. Repeat the process from the opposite end. Pressurize slowly to avoid the slamming the piston from one end to the other. Welker recommends using helium to test for leaks. IOM-011 Page 16 of 20...
- Page 17 Any debris or residue that is not removed from the cylinder will contaminate the results of the next sample extracted from the cylinder. Welker recommends cleaning and leak testing of the cylinder after each use. Cleaning a constant pressure sample cylinder can be done one of three ways: Purging with helium •...
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Page 18: Safety Warning
Burst disc ranges and cylinder working pressures are determined by the U.S. Department of Transportation, and these guidelines and rules are found in CFR-49 If you have any questions, please contact Welker. IOM-011 Page 18 of 20... -
Page 19: Troubleshooting
The following is a troubleshooting table of issues most commonly associated with the ® Welker Constant Pressure Cylinder models. If you are having a problem that is not listed, or if the solution provided does not repair the problem, please call Welker for service options. POSSIBLE PROBLEM... - Page 20 13839 West Bellfort St., Sugar Land, Texas 77498-1671 Phone: (281) 491-2331 Web Page: www.welker.com...
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