Welker INFLOW User manual

INSTALLATION, OPERATION, ANDMAINTENANCEMANUAL
WELKER INFLOW™ ACE CRUDEOILSAMPLER
WITHAICONTROL™
DRAWING NUMBER
AD885BA

MANUAL NUMBER
IOM-161

REVISION
Rev. D, 12/3/2019

TABLEOFCONTENTS
2IOM-161 MODEL: INFLOW™ ACE WITHAICONTROL™ REV: D 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331
Copyright © 2019 Welker, Inc. All rights reserved. Welker®, W Welker®, W logo, WelkerScope®, WelkerJet®, and OdorEyes®are registered trademarks of Welker, Inc.
 SAFETY 3
1. PRODUCT INFORMATION 4
1.1 Introduction 4
1.2 Product Description 4
1.3 Important Information 5
1.4 Specifications 5
1.5 Equipment Diagrams 6
  
2. INSTALLATION & OPERATION 8
2.1 Before You Begin 8
2.2 Preparing the Unit for Installation 8
2.3 Installing the Unit 11
2.4 Setting the Sample Volume 16
2.5 Operating the Unit 19
2.6 Purging the Unit 20
2.7 Emergency Shutoff 21
2.8 Retracting the Unit 22
  
3. MAINTENANCE 26
3.1 Before You Begin 26
3.2 Maintenance 27
3.3 Troubleshooting 36
  
 APPENDICES 38
 A: Referenced or Attached Documents 38
 B: D-Style Collection Head Maintenance 39


IMPORTANTSAFETYINFORMATION
READALLINSTRUCTIONS
Notes emphasize information and/or provide additional information to assist the user.
Caution messages appear before procedures that could result in damage to equipment if not observed.
Warning messages appear before procedures that could result in personal injury if not observed.
This manual is intended to be used as a basic installation and operation guide for the Welker inFlow™ ACE Crude Oil Sampler. For comprehensive instructions,
please refer to the IOM Manuals for each individual component. A list of relevant component IOM Manuals is provided in Appendix A of this manual.
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 in this manual. Correct installation and operation, however, are the responsibility of the end user. Welker reserves the right to make
changes to this manual and all products in order to improve performance and reliability.
BEFOREYOUBEGIN
Read these instructions completely and carefully.
IMPORTANT- Save these instructions for local inspector's use.
IMPORTANT- Observe all governing codes and ordinances.
Note to Installer - Leave these instructions with the end user.
Note to End User - Keep these instructions for future reference.
Installation of this inFlow™ ACE Crude Oil Sampler is of a mechanical nature.
Proper installation is the responsibility of the installer. Product failure due to improper installation is not covered under the warranty.
If you received a damaged inFlow™ ACE Crude Oil Sampler, please contact a Welker representative immediately.
Phone: 281.491.2331
Address: 13839 West Bellfort Street
Sugar Land, TX 77498
SAFETY
3IOM-161 MODEL: INFLOW™ ACE WITHAICONTROL™ REV: D 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

1.1 Introduction
We appreciate your business and your choice of Welker products. The installation, operation, and maintenance liability for this
equipment becomes that of the purchaser at the time of receipt. Reading the applicable Installation, Operation, and
Maintenance (IOM) Manuals 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 Welker at 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.
1.2 Product Description
The Welker inFlow™ ACE Crude OilSampler is an isokinetic probe sampler designed to extract a representative sample of liquid
product from the flowing stream. When used with a pipeline isolation valve, the inFlow™ ACE with AI Control™ can be safely
inserted and retracted without interfering with or venting pipeline pressure. Once all desired samples have been collected, the
inFlow™ ACE can be fully evacuated of internal sample volume using the purge tube, thus preparing the sampler for the next
sample batch.
The operator controls the insertion and retraction of the probe by manipulating valves and applying process or auxiliary pressure.
The inFlow™ ACE features an adjustable insertion length to accommodate different pipeline sizes. Sampling may be hydraulically
or pneumatically operated but is electronically controlled from a Programmable Logic Controller (PLC) or other signal control
system. Sampling may be timed or proportional to flow.
With protection from an external sand relief and check valves designed for sandy oils, this sampler is capable of sampling
product containing sand or debris. For added safety, the inFlow™ ACE is equipped with a dustcover, shaft wipers to protect seals,
and an adjustable V-ring packing for emergency shutdown leak protection.
Designed with ease of use in mind, the external sample volume adjustment simplifies operation of the inFlow™ ACE even further.
The external adjustment allows the operator to adjust the sample volume without having to remove the inFlow™ ACE from the
pipeline.

For this manual, the term "PLC," or Programmable Logic Controller, will be used to refer to the PLC, DCS, or other signal control
system used by the customer to activate and operate the solenoid.
Welker may custom design the inFlow™ ACE to suit the particular application and specifications of each customer.
SECTION 1: PRODUCTINFORMATION
4IOM-161 MODEL: INFLOW™ ACE WITHAICONTROL™ REV: D 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

1.3 Important Information
1. The lubrication port should remained plugged at all times except when performing maintenance on a sampler that has
been isolated from pipeline pressure and/or removed from the pipeline.
2. Prior to injecting Welker Great Barrier Sealant™ into the lubrication port, the plug must be removed and an
appropriately sized grease fitting installed.
3. After Welker Great Barrier Sealant™ has been injected into the lubrication port, the grease fitting must be removed and
the plug reinstalled before the sampler can be exposed to pipeline pressure and returned to operation.

Failure to remove the grease fitting and return the plug to the lubrication port prior to exposing the sampler to pipeline
pressure could result in a product leak and/or injury to the operator.
1.4 Specifications

The specifications listed in this section are generalized for this equipment. Welker can modify the equipment according to your
company's needs. Please note that the specifications may vary depending on the customization of your equipment.
Table 1: inFlow™ ACE Specifications
Products Sampled Condensate, Crude Oil, Liquid Products Compatible With the Materials of
Construction, Refined Hydrocarbons, and Water
Materials of Construction
316/316L Stainless Steel Wetted Parts, Carbon Steel Lubricator Body, PTFE, Kalrez®
Wetted Seals, and Viton® Non-Wetted Seals
Others Available
Maximum Allowable
Operating Pressure
150 ANSI Carbon Steel: 285 psig @ -20 °F to 100 °F (19 barg @ -28 °C to 37 °C)
600 ANSI Carbon Steel: 1480 psig @ -20 °F to 100 °F (102 barg @ -28 °C to 37 °C)
Pipeline Connection Size: 2"
Rating: 150 or 600 ANSIRF
Sample Outlet Connection ¼" FNPT
Motor Housing Actuation Ports
¼" FNPT
½" FNPT
³⁄₈" FNPT (Standard)
Insertion Length
0–18" (0–45 cm)
0–24" (0–60 cm)
0–36" (0–91 cm)
Utility Requirements Hydraulic or Pneumatic Supply for Motor Operation: 120 psig (8 barg)
Inert Gas Supply for Purge Operation: ¼" FNPT Connection
Sample Volume D-Style Collection Head: 0.5–10 cc
Features
External Adjustment
External Sand Relief
Purge Tube
V-ring Packing
Options Pre-Set Collection Head
NACECompliance
5IOM-161 MODEL: INFLOW™ ACE WITHAICONTROL™ REV: D 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

1.5 Equipment Diagrams
Figure 1: inFlow™ ACE Diagram
6IOM-161 MODEL: INFLOW™ ACE WITHAICONTROL™ REV: D 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

Figure 2: inFlow™ ACE Connections Diagram
7IOM-161 MODEL: INFLOW™ ACE WITHAICONTROL™ REV: D 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

2.1 Before You Begin

After unpacking the unit, check the equipment for compliance and any damage that may have occurred during shipment.
Immediately contact a Welker representative if you received damaged equipment.


When sealing fittings with PTFE tape, refer to the proper sealing instructions for the brand used.


Take care not to close the pipeline isolation valve on the insertion shaft while the shaft is inserted in the pipeline. This is the most
common cause of damage to Welker probes.

1. Welker recommends that the unit be installed to the side of the pipe and inserted into the center one-third (¹⁄₃) of the
pipeline in a location where the product is well-mixed and will yield an accurate and representative sample.
2. Locate the unit at least two to four pipe diameters downstream of an inline static mixer or other flow conditioning
system.
3. Handle the unit with care. Avoid bending the insertion shaft, which has a polished surface that travels through seals.
4. Operate the unit slowly and smoothly while inserting and retracting to avoid damaging the unit.
2.2 Preparing the Unit for Installation
Aligning the Lock Collar
1. Determine the direction of product flow in the pipeline.
2. Lay the inFlow™ ACE on a smooth, clean surface.
3. If the collection head is not fully visible, gently pull the collection head out of the lubricator body.

Note that the lock collar must be loose in order to pull the collection head out of the lubricator body.

4. Ensure that the lock collar is aligned with the alignment nuts (Figure 3). As necessary, loosen the cap screws on the sides
of the lock collar and rotate the lock collar until it is aligned with the alignment nuts.

Once the unit is installed to the pipeline, the alignment indicator rod will be an external reference point to the collection head
opening.

SECTION 2: INSTALLATION&OPERATION
8IOM-161 MODEL: INFLOW™ ACE WITHAICONTROL™ REV: D 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

Figure 3: Lock Collar Diagram

5. Loosen the jam nut, and then turn the hanger until the opening in the collection head is aligned with the alignment
indicator rod on the lock collar (Figure 4). The opening in the collection head should face the direction of product flow
so that the flowing stream will pass through the opening.

Figure 4: D-Style Collection Head Diagram

6. Tighten the jam nut on the collection head. The tightened jam nut and safety wire will prevent the collection head from
turning.
9IOM-161 MODEL: INFLOW™ ACE WITHAICONTROL™ REV: D 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

Setting the Insertion Length
7. Prior to installing the inFlow™ ACE, the length the insertion shaft will need to travel inside the pipeline must be
determined. Measure the distance the insertion shaft must travel from the top of the pipeline isolation valve to the
desired insertion depth (e.g., the center one-third (¹⁄₃) of the pipeline) (Figure 5). This will be the shaft insertion length.

Figure 5: Determining the InsertionDepth

8. Pull up on the insertion shaft to ensure that it is fully retracted. The end of the collection head should be flush with or in
close proximity to the flange face (Figure 6).
9. Beginning at the top edge of the alignment nuts, measure along the insertion shaft to the desired insertion length
(Figure 6). As needed, use a felt tip pen to mark this point.

Figure 6: Setting the Insertion Length

10. Remove the hex bolts from the alignment nuts (Figure 3).
11. Loosen the cap screws on the sides of the lock collar (Figure 3).
12. Carefully slide the lock collar up the shaft to the shaft insertion length, taking care not to scratch the outer shaft.
13. Ensure that the alignment indicator rod is still aligned with the opening in the collection head.
14. Tighten the cap screws on the sides of the lock collar to secure the lock collar to the outer shaft at the marked point
(Figure 3).

This procedure ensures that the insertion length will be mechanically limited by the lock collar and that the lock collar will
hold the probe in place when under pressure.
10 IOM-161 MODEL: INFLOW™ ACE WITHAICONTROL™ REV: D 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

2.3 Installing the Unit
1. Close all valves on the inFlow™ ACE.
2. Secure the inFlow™ ACE to a full port pipeline isolation valve.

For long probes installed horizontally, Welker recommends field installation of bracing support for the outlet end of the probe
to offset the cantilever effect and prevent bending of the shaft. Any bracing or support installed should NOT contact the probe
shaft, as scratching or other damage to the shaft may lead to loss of integrity of the sealing surface.

The vent (drain) outlet on the lubricator body must be pointed down.

If the unit will be inserted using hydraulic fluid, continue to step 3.
If the unit will be inserted using an auxiliary gas, proceed to step 13.
If the unit will be inserted using pipeline product, proceed to step 24.
11 IOM-161 MODEL: INFLOW™ ACE WITHAICONTROL™ REV: D 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

Using Hydraulic Fluid (Optional)

If using hydraulic fluid to insert and retract the insertion shaft, the customer must provide a way to drain the hydraulic fluid
from the insertion cylinder.

Welker recommends adding a pressure gauge to the hydraulic supply so that the maximum allowable operating pressure of the
unit is not exceeded.

Hydraulic fluid provides the smoothest insertion and retraction.

3. With isolation valve A closed, install a customer-supplied hydraulic supply (e.g., a hydraulic hand pump) to vent/relief
valve B (Figure 1).
4. Slowly open the pipeline isolation valve. Check for leaks and repair as necessary.
5. Open the valve on the customer-supplied hydraulic supply.
6. Slowly open vent/relief valve B, and then slowly apply hydraulic fluid to the unit. The insertion shaft will begin to insert
into the pipeline.

Once the insertion shaft begins to insert, do not open the valve any further. The insertion shaft should be inserted slowly and
smoothly. Opening the valve too quickly or too much may cause the insertion shaft to insert into the pipeline too quickly and
may result in damage to the unit.

7. Using the alignment indicator rod, guide the shaft slowly into the pipeline. The alignment indicator rod should be
parallel to the pipeline.
8. As necessary, align the lock collar holes with the alignment nuts on the top cap (Figure 3).
9. Once the lock collar seats on the alignment nuts, return the hex bolts to the alignment nuts and tighten firmly (Figure 3).

DONOT stop applying pressure to the insertion shaft until the lock collar has been secured to the alignment nuts.

10. Once the lock collar is secured to the top cap, close vent/relief valve B, and then close the customer-supplied hydraulic
supply (Figure 1).
11. Disconnect the customer-supplied hydraulic supply from vent/relief valve B (Figure 1).
12. Proceed to step 34 to complete installation.
12 IOM-161 MODEL: INFLOW™ ACE WITHAICONTROL™ REV: D 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

Using an Auxiliary Gas (Optional)

An auxiliary gas supply is OPTIONALfor this unit. However, for products containing liquid, sand, or other abrasive contaminants,
Welker strongly recommends the use of an auxiliary gas (e.g., clean, dry nitrogen gas) to prevent damage to the insertion
cylinder.

13. With isolation valve A closed, connect a customer-supplied auxiliary gas supply to vent/relief valve B (Figure 1).
14. Regulate the customer-supplied auxiliary gas supply to a pressure equal to the pipeline pressure.
15. Slowly open the pipeline isolation valve. Check for leaks and repair as necessary.
16. Open the valve on the customer-supplied auxiliary gas supply.
17. Slowly open vent/relief valve B (Figure 1). The insertion shaft will begin to insert into the pipeline.

Once the insertion shaft begins to insert, do not open the valve any further. The insertion shaft should be inserted slowly and
smoothly. Opening the valve too quickly or too much may cause the insertion shaft to insert into the pipeline too quickly and
may result in damage to the unit.

18. Using the alignment indicator rod, guide the shaft slowly into the pipeline. The alignment indicator rod should be
parallel to the pipeline.
19. As necessary, align the lock collar holes with the alignment nuts on the top cap (Figure 3).
20. Once the lock collar seats on the alignment nuts, return the hex bolts to the alignment nuts and tighten firmly (Figure 3).

DONOT stop applying pressure to the insertion shaft until the lock collar has been secured to the alignment nuts.

21. Once the lock collar is secured to the top cap, close vent/relief valve B, and then close the customer-supplied auxiliary
gas supply (Figure 1).
22. Disconnect the customer-supplied auxiliary gas supply from vent/relief valve B (Figure 1).
23. Proceed to step 34to complete installation.
13 IOM-161 MODEL: INFLOW™ ACE WITHAICONTROL™ REV: D 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

Using Pipeline Product (If Not Using Hydraulic Fluid or an Auxiliary Gas)
24. Ensure that vent/relief valve B is closed (Figure 1).
25. Slowly open the pipeline isolation valve. Check for leaks and repair as necessary.
26. Slowly open isolation valve A (Figure 1). The insertion shaft will begin to insert into the pipeline.

Once the insertion shaft begins to insert, do not open the valve any further. The insertion shaft should be inserted slowly and
smoothly. Opening the valve too quickly or too much may cause the insertion shaft to insert into the pipeline too quickly and
may result in damage to the unit.

27. Using the alignment indicator rod, guide the shaft slowly into the pipeline. The alignment indicator rod should be
parallel to the pipeline.
28. As necessary, align the lock collar holes with the alignment nuts on the top cap (Figure 3).
29. Once the lock collar seats on the alignment nuts, return the hex bolts to the alignment nuts and tighten firmly (Figure 3).

DONOT stop applying pressure to the insertion shaft until the lock collar has been secured to the alignment nuts.

30. Once the lock collar is secured to the top cap, close isolation valve A (Figure 1).
31. Open vent/relief valve B to relieve pipeline pressure (Figure 1). The insertion shaft will remain in the pipeline, held in
place mechanically by the lock collar.
32. Close vent/relief valve B (Figure 1).
33. Continue to step 34 to complete installation.
14 IOM-161 MODEL: INFLOW™ ACE WITHAICONTROL™ REV: D 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

Completing Installation
34. Once the inFlow™ ACE is inserted and secured, use ¼" tubing to connect from the sample outlet to an appropriate
customer-supplied sample container, such as a Welker TCC Transportable Crude Oil Container.

Customer-supplied ¼" tubing must slope downward from the inFlow™ ACE to the sample container.

35. Use appropriately sized tubing to connect from the normally open port on the solenoid to port A on the motor housing
(Figure 2). Use appropriately sized tubing to connect from the normally closed port on the solenoid to port B on the
motor housing (Figure 2).

The normally open port should be stamped "A" or "NO."
The normally closed port should be stamped "B" or "NC."

36. Open emergency shutoff valve E (Figure 1).
37. As necessary, adjust the external sand relief. With emergency shutoff valve E open, loosen the jam nut, tighten the
adjusting screw on the external sand relief, and then tighten the jam nut as a locking device (Figure 13).

After the external sand relief valve has been set, emergency shutoff valve E must remain open during sampling. For more
information about emergency shutoff valve E, see Section 2.7, Emergency Shutoff.

The external sand relief comes factory-set by the manufacturer if requested at the time of order.
15 IOM-161 MODEL: INFLOW™ ACE WITHAICONTROL™ REV: D 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

2.4 Setting the Sample Volume
1. To set or adjust the sample volume, locate the external adjustment assembly, and then slide the dustcover down to
expose the external adjustment chamber (Figure 7).

Setting the sample volume is accomplished by:
• determining where the adjustment pin will need to be placed to attain the desired sample volume,
• rotating the upper external adjustment ring in relation to the adjustment pin setting to attain the desired sample
volume, and
• installing the adjustment pin to the predetermined slot.
The sample volume is determined by the distance between the upper external adjustment ring and the adjustment pin.

Once the desired volume is set, the sample volume can be changed at any time externally without removing the inFlow™ ACE
from the pipeline.

Figure 7: Upper Housing Diagram

2. Determine to which slot the adjustment pin will be installed after the external adjustment rings have been set (Figure
8).

16 IOM-161 MODEL: INFLOW™ ACE WITHAICONTROL™ REV: D 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

Figure 8: Determining Adjustment Pin Setting

3. Begin with the lower external adjustment ring at the bottom of the external adjustment chamber and the upper
external adjustment ring tightened down on top of it (Figure 9).

Figure 9: Setting the External Adjustment Rings

17 IOM-161 MODEL: INFLOW™ ACE WITHAICONTROL™ REV: D 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

Welker recommends using a felt tip pen to mark the front of both external adjustment rings so that it is clear when the
adjustment rings have made a full rotation.

4. Using the provided external adjustment tool, turn the upper external adjustment ring to the desired volume (Figure 9).

One full rotation of the upper external adjustment ring is approximately 1 cc if the inFlow™ ACE is equipped with the D-Style
collection head. Each hole in the upper external adjustment ring is equal to approximately 0.10 cc.

5. Turn the lower external adjustment ring until it meets the upper external adjustment ring. Tighten firmly to prevent
slippage that might lead to inconsistencies in sample volume.

The lower external adjustment ring and O-ring are used to lock the upper external adjustment ring in place to prevent slippage
and subsequent changes in the sample volume during sampling.

6. Slide the dustcover up to cover the external adjustment chamber (Figure 7).
7. Install the adjustment pin through the dustcover to the appropriate slot.
8. Turn ON and actuate the hydraulic or pneumatic supply to collect a sample from the sample outlet to ensure that the
sample volume collected is the same as the desired sample volume.

Welker recommends the Welker Checkpoint™ Sample Bite Verification Panel for use with this unit.

9. As necessary, repeat steps 1–8 to further adjust the sample volume.
18 IOM-161 MODEL: INFLOW™ ACE WITHAICONTROL™ REV: D 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

2.5 Operating the Unit
1. Turn ONthe hydraulic or pneumatic supply.
2. As necessary, adjust the hydraulic or pneumatic supply to 120 psig.
3. Set the timer or controller to actuate the solenoid at the desired sampling actuation frequency based on the sampling
equations provided(Figure 10).

Figure 10: Sampling Frequency Equations

Never fill the container above 80% of its capacity. Allow at least 20% room for product expansion should the container be
exposed to increased temperatures.

Note the 0.8 in Equation 1 represents the 80% volume limit for liquid sampling.

4. Ensure that emergency shutoff valve E is open (Figure 1)
5. As necessary, turnon electrical power and activate the hydraulic or pneumatic supply to actuate the solenoid at the set
sampling frequency.

At start-up, several actuations may be required to displace trapped air and fill the insertion shaft with product before sample
appears at the outlet port.

19 IOM-161 MODEL: INFLOW™ ACE WITHAICONTROL™ REV: D 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

6. Collect a sample from the sample outlet to ensure that the sample volume collected is the same as the desired sample
volume.

Welker recommends the Welker Checkpoint™ Sample Bite Verification Panel for use with this unit.
2.6 Purging the Unit

The purge tube allows the sampler to be completely evacuated of sample from the inlet to the sample container. Automated
purging can be achieved with the Welker PNP Plug & Purge Panel.

To prevent cross-contamination between samples, Welker recommends that the inFlow™ ACE be evacuated, or purged,
following each sample batch to inject all sampled product remaining in the unit into the sample container.

1. Connect an appropriate customer-supplied nitrogen or other inert gas supply to purge valve P (Figure 1).

Welker recommends using nitrogen or helium as the inert gas supply.

2. Set the inert gas supply pressure to approximately 50 psig above the external relief on the inFlow™ ACE.

Prior to purging the unit, ensure that the purge pressure (i.e., the purge setting minus the external adjustable relief setting) does
not exceed the pressure rating of the sample container.

3. TurnONthe inert gas supply.
4. Open purge valve P (Figure 1).
5. Allow product in the inFlow™ ACE to drain. Monitor the sample container for under- or over-purging.

If no inert gas is heard entering the sample container, the purge pressure has been set too low and previous product remains in
the sampler.
If more than a burst of inert gas is heard entering the sample container, the purge pressure has been set too high and the
operator risks overpressurizing the sample container.

6. Turn off the inert gas supply.
7. Close purge valve P (Figure 1).
8. Disconnect the inert gas supply from purge valve P (Figure 1).
20 IOM-161 MODEL: INFLOW™ ACE WITHAICONTROL™ REV: D 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331