EMERSON 2100 Series Emergency Pressure Relief Vent and Manhole Cover Instruction Manual

2100 Series Emergency Pressure Relief Vent and Manhole Cover
Instruction Manual

WARNING

Failure to follow these instructions or to properly install and maintain this equipment could result in an explosion, fire, and/or chemical contamination causing property damage and personal injury or death.
Enardo™ emergency pressure relief vent must be installed, operated, and maintained in accordance with federal, state, and local codes, rules, and regulations and Emerson Process Management Regulator Technologies Tulsa, LLC instructions.
Failure to correct trouble could result in a hazardous condition. Call a qualified service person to service the unit. Installation, operation, and maintenance procedures performed y an unqualified person may result in improper adjustment and unsafe operation. Either condition may result in equipment damage or personal injury. Only a qualified person shall install or service the emergency pressure relief vent.

Introduction

Scope of the Manual
This Instruction Manual provides instructions for installation, maintenance, and parts ordering information for the 2100 Series Emergency Pressure Relief Vent.
Product Description
The 2100 Series Emergency Pressure Relief Vent is designed to provide simple, reliable operation as an emergency vent while providing efficient access to your tank and maintaining the industry-leading sealing standards (1 SCFH at 90% set point). It also provides trouble-free operation with minimum maintenance. There are two available configurations for the 2100 Series: tethered and restrained (see Figure 3).

Specifications

The Specifications section lists the specifications for the 2100 Series. The following information is stamped on the nameplate attached to the relief vent: model number,  connection size, date of manufacture, serial number, pressure setting, and flow rate. 2100 Series
Connection Sizes Available
16, 20, and 24 in. / 387, 489 and 591 mm
Pressure Ranges (1)
0.7 to 8.0 oz./sq. in. and 1.2 to 14.0 in. w.c.
Construction Materials
Base: Carbon steel, 304 Stainless steel, and 316 Stainless steel
Lid and Seal Support: Aluminum, 304 Stainless steel, and 316 Stainless steel
Construction Materials (continued)
Seal: Buna-N, FEP Teflon ® and Viton ®
Certification
EN IEC 60079-0:2018
EN IEC 60079-11:2012
EN ISO 80079-36:2016
EN ISO 80079-37:2016

1. The pressure limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.

Teflon ® and Viton ® are marks owned by

II 1 G Ex h IIC T6 Ga
OUTER HOUSING OF STAINLESS STEEL,
CARBON STEEL OR COATED ALUMINUM
II 2 G Ex h IIC T6 Gb
OUTER HOUSING OF UNCOATED ALUMINUM
HAZARDOUS LOCATION

Product Identification and Marking

Hazardous Locations
Enardo™ Emergency Pressure Relief Vents are available with outer housings of Carbon steel, stainless steel or aluminum, as indicated in Figure 5.
Tagging Information
The nameplate is located on the unit’s base, above the connection flange (see Figure 5).
Nameplate Information
A nameplate is attached to the vent and contains the following information:

• Model Number – Ex. 2124-24T-1

• Connection Flange Size – 24 in. / 610 mm

• Serial Number

• Tag Number (Optional)

• Notified Body Number – Ex. 2460

• Cat. No. (Category Number)
  – Category 1 – Stainless steel, Carbon steel, or Coated Aluminum vents
  – Category 2 – Uncoated Aluminum vents

• Date – Date of Manufacture

• Certificate – Ex. PRESAFE 17 ATEX 10273X

• Pressure Setting and Flow Rate
  – Setting – Ex. Z4.0
  – Flow Rate SCFH (Air) – Ex. 00000

WARNING
Wear protective gloves and clothing to prevent skin contact when handling lead weights. Wear eye protection. Avoid breathing dust, fumes, mist, vapors, and spray. Do not eat,  drink, or smoke while using the product. Avoid release to the environment. Wash hands with soap and water after handling. Keep away from excessive heat and open flames.
WARNING
Make sure the line is free of hazardous vapors before installing or servicing the valve.

Principle of Operation

The 2100 Series maintains a tight seal until system pressure exceeds the set pressure of the vent. To adjust the set pressure, a series of weights may be stacked onto the lid assembly. When excessive overpressure occurs the weighted lid assembly lifts, breaking the seal between the seat and seal portion of the lid assembly. This allows vapors to pass through the vent orifice and relieve pressure buildup. The vent reseals upon relief and remains sealed; tethered lids may blow completely off in a catastrophic pressure event (see Figure 4). It is important to know that relieving vapors near the set pressure in a continuous manner may cause the lid assembly to flutter or oscillate. This is a common occurrence in products of this type in the industry. Operating the vent with flutter or oscillation over time may cause premature vent damage or wear. Please feel free to contact your local Sales Office with any questions or for information on proper tank venting.

Installation

▲ WARNING
The 2100 Series is shipped with its lid held partially open. The lid assembly has attached weights and is heavy. Use caution when removing the shipping blocks and metal bands to avoid injury to fingers and hands.
Prior to installation, remove the unit from its crate and discard any protective coverings. Follow the recommended instructions for the installation of the 2100 Series.

1. Carefully remove the 2100 Series from its crating.
   Note
   The seal portion of the vent can be damaged through improper handling, protect this surface with a padding material while transporting the unit if possible.
   WARNING
   Failure to use the spreader bar in lifting the unit may result in personal injury, damage to the unit, and damage to the equipment.
   There should be no tension on the lanyards if the unit is to be hoisted in position, failure to do so may result in damage to the unit.

2. Use an appropriate spreader bar when lifting the unit by the installed eyebolts. If the complete unit is to be hoisted into position using installed eyebolts, first secure the use the lid so that there is no tension on the lanyards. Lanyards are load-rated to 350 lbs / 160 kg each; damage to other components may occur.

3. Install the 2100 Series on flange bolt patterns that match that of the vent itself. If a matching pattern is not available, please contact your local Sales Office for an adapter.  The attachment flange base must be a level surface. Use an appropriate gasket placed between the 2100 Series flange and the attachment flange, and center the vent into place.

4. Insert the appropriate number of bolts and make sure the vent is fastened securely. Installed bolts should be clear of the lid assembly when it is in the fully open position.  remove any spacer or seal protection and inspect the now installed unit for items that would keep it from working properly. The sealing area should be free of any debris or damage that would cause leakage.

Startup

WARNING
Ensure the tank is at atmospheric pressure before opening. A pressure buildup inside the tank can cause a spray to be emitted from the vent if opened under pressure.

Tethered Configuration

1. Grip the lid firmly and lift straight up until the bottom of the guide assembly clears the base.
   Note
   Be careful to keep the guide from denting or scratching the sealing surface as this can cause leaks.

2. Move the lid away from the opening and set it down on the guide assembly. The guide assembly is designed to hold the cover assembly even at the maximum 8 oz./sq. in. setting.

Restrained Configuration

1. Remove the nylock nut and outer fender washer. The loop slides off the lanyard attachment assembly.

2. Grip the lid firmly and lift straight up until the bottom of the guide assembly clears the base or attach shackles to the eyebolts and use a crane or hoist to lift.
   Note
   Be careful to keep the guide from denting or scratching the sealing surface as this can cause leaks.

3. Move the lid away from the opening and set it down. The guide assembly is designed to hold the cover assembly even at the maximum 8 oz./sq. in. setting.

Maintenance

Sealing Surface Protector
WARNING
The sealing surface protector must be removed before the 2100 Series is returned to service. The vent will not seal with the protector in place.
The following instructions are applicable only if the sealing surface protector was also purchased for your unit. This guard is available to prevent damage to the sealing surface when the 2100 Series is being used for tank access or for running air or weld leads into the tank.
Remove the sealing surface protector from its bag. Place one end of the protector over the machined surface with the legs pointing down and the flat side up. Firmly press the protector over the sealing surface. Move around the sealing surface making sure the protector is snugly attached.

Seal Replacement Procedure

Tools and Supplies Needed:

• 2 standard 7/16 in. wrenches
• Torque wrench (recommended)
• 1 screwdriver, any type (for eyebolt units only)
• Adhesive tape (recommended for eyebolt units)
• 2100 Series seal
• 4-1/4 in. stat-o-seals (recommended)

Replacement Procedure:
WARNING
Ensure the tank is at atmospheric pressure before opening. A pressure buildup inside the tank can cause a spray to be emitted from the vent if opened under pressure.

1. Remove the Nylock nut and outer fender washer. The loop slides off the lanyard attachment assembly. Remove the lid assembly from the base and place it on a level surface.

2. Loosen the 4 hex nuts on the bottom of the lid assembly. If the unit is equipped with eyebolts, insert the screwdriver through the eye to provide leverage.

3. If the unit is equipped with eyebolts, place a piece of adhesive tape over the hex bolt heads to prevent them from falling out. This is not required but makes seal replacement much easier.

4. Flip the lid assembly over so that the guide assembly is facing up.

5. Remove the hex nuts, washers, guide assembly, stat-o-seals, seal support, and seal. Take note of the order in which the components are removed.

6. card seal. If replacement stat-o-seals were ordered, discard old stat-o-seals.

7. Reassemble the lower lid components in the reverse order of disassembly.

8. Before tightening hex nuts, ensure that the eyelet on the lanyard(s) is pointing away from the center of the lid. Failure to do this may result in damage to the tank by preventing the unit from opening fully in a pressure event. Tighten each nut to 1 turn after snug.

9. Flip the lid assembly over so that the guide assembly is facing down. Reinsert the lid into the base and reattach the lanyard(s). Do not tighten the hex nut and the nylock ut greater than 12 ft-lbs.

RESTRAINED BASE (COVER ASSEMBLY NOT SHOWN)
Figure 12. 2100 Series Assembly Drawing

Parts Ordering

When corresponding with your local Sales Office about this equipment, always reference the equipment serial number stamped on the nameplate.
When ordering replacement parts, specify the complete 11-character part number found in Table 1.

Parts List

Key Description

1. Base, Carbon steel, 304 Stainless steel, and 316 Stainless steel
2. Cover, Aluminum, Zinc-plated Carbon steel, 304 Stainless steel, and 316 Stainless steel
3. Seal Support, Aluminum, Zinc-plated Carbon steel, 304 Stainless steel, and 316 Stainless steel
4. Shield, Aluminum, Zinc-plated Carbon steel, 304 Stainless steel, and 316 Stainless steel
5. Guide, Aluminum, Zinc-plated Carbon steel, 304 Stainless steel, and 316 Stainless steel
6. Seal, Buna-N, Teflon ® and Viton ®
7. Stat-O-Seal, 1/4 in. Fluorocarbon, Stainless steel, and Viton ®
8. Flat Washer, 1/4 in., 316 Stainless steel
9. Fender Washer, 1/4 x 1 in. O.D., 316 Stainless steel
10. Lock Washer, 1/4 in., 316 Stainless steel
11. Hex Bolt, 1/4 in. – 20 x 3 in., 316 Stainless steel
12. Hex Bolt, 1/4 in. – 20 x 2 in., 316 Stainless steel
13. Hex Nut, 1/4 in. – 20, 316 Stainless steel
14. Eyebolt, 1/4 in. – 20 x 3 in., 316 Stainless steel
15. Nylock Hex Nut, 1/4 in. – 20, 316 Stainless steel and Nylon
16. Roller, Zinc-plated Carbon steel, 316 Stainless steel
17. Weight, “Makes”, Zinc-plated Carbon steel
18. Weight, oz./sq. in. or in. w.c., Zinc-plated Carbon steel and 316 Stainless steel
19. Lanyard, Tether or Restraint, 316 Stainless steel

Table 1. 2100 Series Seal Options

Part Number
16 in.| 20 in.| 24 in.
Buna-N| NE3043037A0| NE3043040A0| NE3043043A0
Teflon ®| NE3043038A0| NE3043041A0| NE3043044A0
Viton ®| NE3043039A0| NE3043042A0| NE3043045A0

Table 2. Torque Specifications – Raised Face Flange, Steel Only

NOMINAL PIPE DIAMETER
S| NUMBER OF BOLTS| BOLT DIAMETER| TORQUE
---|---|---|---
in.| mm| ft-lbs| N-m
16| 16| 1.00| 25.4| 159| 216
20| 20| 1.13| 28.7| 214| 290
24| 24| 1.25| 31.8| 253| 343

Assumptions:
Use of SAE grade 5 bolts or studs or stronger.
No lubricant.
Compressed mineral fiber material or similar
Notes:
If lubricant is used on bolts, apply the torque reduction factor listed in Lubricant Table. For best results, hardened steel washers should be used on all cast flange bolted connections.
Table 3. Torque Specifications – Flat Face Flange, Steel or Aluminum

NOMINAL PIPE DIAMETER| NUMBER OF BOLTS| BOLT DIAMETER| TORQUE
---|---|---|---
in.| mm| ft-lbs| N•m
16| 16| 1| 25.4| 125| 170
20| 20| 1.13| 28.7| 135| 183
24| 24| 1.25| 31.8| 156| 212
20 API| 16| 0.63| 16| 75| 102
24 API| 20| 0.63| 16| 75| 102

Assumptions:
Use of SAE grade 5 bolts or studs or stronger.
No lubricant.
Elastomer <70 Durometer Shore A.
Notes:
Flat-faced flanges should never be mated to a raised face flange for installation. If lubricant is used on bolts, apply the torque reduction factor listed in Lubricant Table. For best results, hardened steel washers should be used on all cast flange bolted connections.

Table 4. Torque Reduction Factor per Lubricant

DESCRIPTION| COEFFICIENT OF FRICTION| MULTIPLY TORQUE VALUE IN TABLE BY
---|---|---
Machine Oil| f = 0.15| 0.75
API SA2 Grease| f = 0.12| 0.6
Nickel-based Lubricant| f = 0.11| 0.55
Copper-based Lubricant| f = 0.10| 0.5
Heavy-duty Lubricating Past| f = 0.06| 0.3

D103823X012 © 2015, 2021 Emerson Process Management Regulator Technologies, Inc. All rights reserved. 12/21.
The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective owners. Enardo™ is a mark owned by regulator Technologies Tulsa, LLC, a business of Emerson Automation Solutions.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. We reserve the right to modify or improve the designs and rspecifications of such products at any time without notice.
Emerson Process Management Regulator Technologies Tulsa, LLC does not assume responsibility for the selection, use, or maintenance of any product. Responsibility for roper election, use, and maintenance of any Emerson Process Management Regulator Technologies Tulsa, LLC product remain solely with the purchaser.

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References

• Enardo.com

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