Welker ALD-1 User manual

© Copyright 2023, Welker Inc.
Installation,
Operation,
and
Maintenance
Manual
Welker®Automatic Liquid Dump
Models
ALD-1, ALD-3, ALD-5, ALD-19
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.
13839 West Bellfort
Sugar Land, Texas 77498-1671
U.S.A.
Tel.: [phone]
Tel.: [phone]
Fax: [phone]
www.welkereng.com

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TABLE OF CONTENTS
IOM-040 Page 3 of 10
ALD-1, ALD-3, ALD-5, ALD-19
Rev: E
Last updated: 6/30/2023
1 GENERAL 4
1.1 Introduction....................................................................................................................4
1.2 Product description ........................................................................................................4
2INSTALLATION INSTRUCTIONS 7
2.1 General...........................................................................................................................7
2.2 Instructions.....................................................................................................................7
3MAINTENANCE INSTRUCTIONS 8
3.1 General...........................................................................................................................8
3.2 Disassembly instructions ...............................................................................................9
3.3 Maintenance instructions...............................................................................................9
Welker®, Welker Jet®, and WelkerScope®are registered trademarks owned by Welker.

INTRODUCTION
IOM-040 Page 4 of 10
ALD-1, ALD-3, ALD-5, ALD-19
Rev: E
Last updated: 6/30/2023
1 GENERAL
1.1 Introduction
We appreciate your business and your choice of Welker products. The installation, operation, and
maintenance liability for this product becomes that of the purchaser at the time of receipt. Reading the
applicable Installation, Operation, and Maintenance (IOM) Manual prior to installation and operation of
this equipment is required for a full understanding of its application and performance prior to use. 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.
Notes, Warnings, and Cautions
Notes emphasize information or set it off from the surrounding text.
Caution messages appear before procedures that, if not observed, could result in
damage to equipment.
Warnings alert users to a specific procedure or practice that, if not followed
correctly, could cause personal injury.
1.2 Product Description
The Welker Automatic Liquid Dump is designed for use in systems where it is necessary to filter
entrained liquids from a process gas. A steady pressure is maintained from the supply source to the
instrumentation connected to the unit. As product enters the device, any free liquids are dropped to a
float at the bottom of the dump. A downcomer is installed inside the float, and as liquids fill the device,
the downcomer itself will begin to float. The downcomer is connected to the dump port, and eventually,
the buoyancy of the float will cause the downcomer to lift. When the downcomer lifts, it will open the
dump port, allowing the liquids to be drained.
The ALD-1 incorporates a coalescing device for product supply that is high in aerosols. The device will
coalesce the aerosols into liquid droplets, which will then drop around the float.

SPECIFICATIONS
IOM-040 Page 5 of 10
ALD-1, ALD-3, ALD-5, ALD-19
Rev: E
Last updated: 6/30/2023
Figure 1

SPECIFICATIONS
IOM-040 Page 6 of 10
ALD-1, ALD-3, ALD-5, ALD-19
Rev: E
Last updated: 6/30/2023
The specifications listed in this section are generalized for this equipment. Welker can
modify the equipment according to your company’s needs. However, please note that the
specifications may vary depending on the customization of your product.
Table 1
*Maximum allowable pressures and temperatures may vary depending on pipeline connection device.
General
Products
Gases/ Liquids
Materials of
Construction
Carbon Steel and Buna-N, PTFE (others available)
Outlet
Connection
1/4" FNPT (ALD-5: 1" FNPT)
Inlet
Connection
1/4" FNPT (ALD-5: 1" FNPT)
Auxiliary
Connections
1/4" FNPT
Capacity
15 gallons per hour at atmospheric pressure.
25 gallons per hour dumping at 500 psi (34 bar) to
atmospheric pressure.
Maximum Allowable
Pressure*
ALD-1, ALD-3, & ALD-5:
1,500 psi @ -20º F to 100º F
(103 bar @ -29º C to 37º C)
ALD-19:
25 psi @ -20º F to 100º F
(1.72 bar @ -29º C to 37º C)

INSTALLATION & OPERATION
IOM-040 Page 7 of 10
ALD-1, ALD-3, ALD-5, ALD-19
Rev: E
Last updated: 6/30/2023
2 INSTALLATION INSTRUCTIONS
2.1 General
After unpacking the unit, check it for compliance and for any damages that may have occurred during
shipment.
Claims for damages caused during shipment must be initiated by the receiver and directed to the
shipping carrier. Welker is not responsible for damages caused from mishandling by the shipping
company.
Recommended Tools
It would be advisable to have the following tools available for installation of the unit; however, tools
used will vary depending on model.
•10" adjustable wrench
•Tubing
•Tubing cutters
•Permanent marker
When sealing fittings with PTFE tape, refer to the proper sealing instructions for the tape used.
2.2 Instructions
2.2.1 Install a valve on the relief port at the bottom of the dump (see Figure 1).
2.2.2 Make sure the relief port valve is closed.
2.2.3 Use tubing to connect the dump port to an atmospheric container or sump location.
It is possible to connect the dump port to a portion of the pipeline, but the pipeline pressure must
be below the pressure entering the ALD.
In cases where the ALD will be placed in temperatures at which the liquids may freeze, pour a
light oil into the outlet port of the unit until the oil begins to fall through the dump port. The
excess oil will gather at the bottom of the device, and any liquid that collects will almost
immediately fall through the oil and out of the dump port.
2.2.4 Connect the appropriate instrumentation to the unit’s outlet port.
2.2.5 Use tubing to connect the product supply to the unit’s inlet.
2.2.6 Slowly open the product supply valve to pressurize the unit.
2.2.7 The unit is now in operation.

MAINTENANCE
IOM-040 Page 8 of 10
ALD-1, ALD-3, ALD-5, ALD-19
Rev: E
Last updated: 6/30/2023
3 MAINTENANCE INSTRUCTIONS
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 the unit have annual maintenance under normal operating conditions. In
the case of severe service, dirty conditions, excessive cycling usage, or other unique
applications that may subject the equipment to unpredictable circumstances, a more
frequent maintenance schedule may be appropriate.
Figure 2
Recommended Tools
It would be advisable to have the following tools available for maintenance of
the unit; however, tools used will vary depending on model.
•Small hex key set
•6" adjustable wrench
•10" adjustable wrench
•Socket wrench with extension
3.1 General

MAINTENANCE
IOM-040 Page 9 of 10
ALD-1, ALD-3, ALD-5, ALD-19
Rev: E
Last updated: 6/30/2023
3.2 Disassembly instructions
3.2.1 Turn off the product supply.
3.2.2 Open the relief valve (Part 10) to relieve pressure inside the unit.
3.2.3 Disconnect and remove the product supply from the inlet of the outlet port of the device.
3.2.4 Disconnect and remove instrumentation connected to the device.
3.2.5 Remove tubing connected to the dump port (Part 11).
3.2.6 Unscrew the base cap (Part 9) and remove it from the body (Part 12). The float assembly (Part 5) is
attached to the base.
3.2.7 If you have the ALD-3, ALD-5, or ALD-19 model, unscrew the top cap (Part 13) from the
cylinder. The ALD-5 and ALD-19 model will have a filter cartridge (Part 15) attached to the top cap.
3.2.8 If you have the ALD-1 model loosen and remove the jam nut (Part 1) from the top of the unit. With
the ALD lying horizontally, gently push out the coalescing device (Part 4) from the inlet port. It will
fall out of the port. Remove it from the cylinder.
3.3 Maintenance instructions
3.3.1 If you have the ALD-1 model, replace the O-ring (Part 3) around the coalescing device and replace
the coalescer (Part 2).
3.3.2 If you have the ALD-3, ALD-5, or ALD-19 model, replace the O-ring (Part 14) around the top cap
(Part 13).
3.3.3 If you have the ALD-5 or ALD-19 model, replace the filter cartridge (Part 15) and reattach to the
top cap.
3.3.4 Replace the O-ring (Part 6) on the base cap.
3.3.5 Replace the gasket (Part 8) on the pivot valve assembly.
3.3.6 Replace the O-ring (Part 7) on the pivot valve assembly.
3.3.7 If you have the ALD-1 model, use a socket wrench with an extension to reinsert the coalescing
device (Part 4) into the inlet port.
3.3.8 If you have the ALD-3, ALD-5, or ALD-19 model, reattach the top cap.
3.3.9 Reattach the bottom cap.
3.3.10 Maintenance is now complete.

13839 West Bellfort, Sugar Land, Texas 77498-1671
Phone: [phone]
Fax: [phone]
Toll Free: [phone]
Web Page: www.welkereng.com