Welker LE-2 Installation, Operation And Maintenance Manual

PRODUCT DESCRIPTION
• Designed to protect analyzers from
damage and contamination by
removing liquids from gas
samples.
• As gas enters the LE-2, any free
liquids present are separated from
the sample stream by centripetal
force and a replaceable cartridge
assembly. The separated free
liquids drain from the LE-2, which
allows the dry gas stream to flow
to the analyzer.
SPECIFICATIONS
Application
Liquid Removal
Products
Gases Compatible With the Materials of
Construction
Materials of Construction
316/316L Stainless Steel, Acetal, and PTFE
(Others Available)
Maximum Allowable Operating Pressure
1440 psig @ -20 °F to 300 °F ( 99 barg @
-28 °C to 148 °C
)
Maximum Allowable Flow Rate
4200 cc per Minute @ 25 psig Inlet
(Resulting in Approximately 2 psid on
Filter Cartridge Assembly)
Connections
Inlet: ¼" FNPT
Outlet: ¼" FNPT
Drain: ¼" FNPT
Filter Media
25-Micron Copolymer Filter Cartridge
Assembly
Recommeded Maintenance Schedule
Standard every 6 months AND anytime
liquid is present at the disposable
filter cartridge or the product outlet
Approximate Dimensions
3½" x 3" x 3¼" (L x W x H)
Approximate Weight
4 lb
Features
Mounting Bracket
Replaceable Cartridge Assembly
The following procedures have been
written for use with standard Welker®
parts and equipment. Assemblies that
have been modified might have
additional requirements and
specifications that are not listed in this
document.
If you received a damaged
LE-2 Liquid Eliminator,
please contact a Welker®
representative immediately.
For all product inquiries, please
contact our Service Department:
281.207.1879
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
The installation, operation, and maintenance liability for this equipment becomes that of the purchaser at the time
of receipt. Reading the instructions that comprise IOM-262 prior to installation and operation of this equipment is
required for a full understanding of its application and performance prior to use.
When sealing fittings with PTFE tape, refer to the proper sealing instructions for the brand used.
LE-2 LIQUID ELIMINATOR: INSTALLATION AND OPERATION
1. Ensure that the cap screws are tightened.
2. Securely mount the LE-2 as close to the sample point as possible.
The LE-2 must be installed such that the liquid drain / gas bypass is pointing downward (
Welker® recommends installing a regulator and heater between the sample point and the inlet of the LE-2 and the
downstream instrumentation. This is to ensure the gas sample stream is provided at the temperature and pressure required
for the instrumentation. A heater is recommended to recover heat lost during regulation. Applying heat helps maintain the
gas phase of the sample stream.
DO NOT exceed the maximum allowable flow rate through the replaceable filter cartridge assembly.
5. Using ¼" tubing, connect from the outlet on the customer sample probe to the inlet port of the LE-2 (
6. Using ¼" tubing, connect from the outlet port of the LE-2 (
7. Using ¼" tubing, connect a device to the liquid drain / gas bypass port of the LE-2 to continuously vent and drain any liquids
separated from the sample stream. This device should be compatible with the maximum allowable operating pressure of the LE-2.
Welker® can install a rotameter with valve to the liquid drain / gas bypass port if requested at the time of order.
Welker® recommends installing a Welker® Bypass Recovery System to the liquid drain / gas bypass port.
3. Put the LE-2 into service by beginning product flow.
4. Slightly open the drain valve to allow separated liquids to drain and ensure fresh gas is presented to the analyzer. If liquids are
present at the cartridge assembly or at the product outlet, the cartridge assembly must be replaced. See
To prevent liquid backup inside the LE-2, fluids MUST drain at a minimum of 22 cc per minute.
The liquid drain / gas bypass flow rate will vary by application. A minimum of 500 cc per minute is required for proper drainage.
Figure 1: Welker®
LE-2 Liquid Eliminator
Diagram
WELKER® LE-2 LIQUID ELIMINATOR
IOM-262 | REV. 0 | 01/06/2025
Figure 1
) to the analyzer.
LE-2 LIQUID ELIMINATOR:
MAINTENANCE
1. Halt product flow to the LE-2.
2. Depressurize the LE-2.
3. Disconnect all tubing from the LE-2.
4. Unscrew the cap screws from the LE-2.
5. Remove the cap from the separator
body.
6. Remove the cartridge assembly from
the separator body.
7. Using a solvent such as rubbing
alcohol, that does not leave a film and
will not affect analytical results and
clean rags, carefully wipe the inside of
the separator body and porting.
8. Install a replacement cartridge
assembly to the separator body
( Figure 1
the grooved side of the cartridge
body faces up to the outlet.
9. Align the screw holes in the cap with the
screw holes in the separator body. Then
return the cap to the separator body.
10. Following a cross-bolting sequence,
install the eight (8) cap screws to the cap
of the LE-2. Tighten the screws to 5 ft·lb.
11. The LE -2 is now ready for reinstallation.
Figure 1
).
Figure 1
Maintenance
and Figure 2 ). Ensure that
).
.
Figure 2:
Correct
Cartridge
Assembly
Installation