Pepperl+Fuchs 2001A STD Enclosure Protection System Installation & Operation Manual

CLASS I APPLICATIONS

2 Cubic Feet Maximum

CLASS II APPLICATIONS

10 Cubic Feet Maximum

M

ODEL

2001A

T

YPE

X

P

RESSURIZATION

/ P

URGING

S

YSTEM

I

NSTALLATION

& O

PERATION

M

ANUAL

STD Style

(Standard)

BEBCO EPS

Pepperl+Fuchs ® Inc. • Telephone (330) 486-0002 • FAX (330) 425-4607 • E-mail: [email protected] • www.bebcoeps.com

"Terms & Conditions of Sale" information is printed on every order acknowledgement; copies are available upon request.

We reserve the right to make modifications and no guarantee of the accuracy of the information contained herein is given.

© 2004 Pepperl+Fuchs ® Inc., Twinsburg, Ohio

512166, Dwg No. 129-0208 (Supercedes 2001A-IOM) Printed in U.S.A

Page 2

System Purpose and Description

Purpose, System Description, Important Notes

Page 3

Identifying Your System

Defines specific features of the system

Page 4

General Information

System & Material Specifications, System Accessories,

Spare Parts, Tools & Test Equipment

Page 5

Enclosure and Device Design

Design Requirements, Adjacent Enclosures, Device

Ventilation, Temperature Limitations

Page 6

Installation Overview

Installation Diagram

Page 7

Page 8

Getting Started

Establishing Connection Sizes, Determining Enclosure

Inlet & Outlet Connection Locations

System Mounting

LH, RH, TM, BM & WM Configurations,

FM & PM Configurations

Page 9

Hardware Mounting

Optional Enclosure Protection Vent, Warning

Nameplates

Page 10

Mounting Plate Dimensions

Mounting Plate Dimension Diagrams

Page 11

Mounting Plate Dimensions (cont.)

Mounting Plate Dimension Diagrams

Page 12

Pneumatic Tubing Requirements

Protective Gas Supply Requirements, Pneumatic

Connection Requirements

Page 13

Tubing Connection Points

LH, RH, TM, BM, WM, FM, & PM Configurations

Page 14

Tubing Installation

LH, RH, TM, BM, WM, FM & PM Tubing Configurations

Purpose

Table of Contents

Page 15

Electrical Supply Requirements

General Wiring Requirements, EPCU Power & Alarm

Signal, Enclosure Wiring Methods & Connections

Page 16

Electrical Power Control Unit

General Layout & Conduit Connection Points

Page 17

EPCU Power Rating

Power Rating Nameplate, Assembled Electronics

Page 18

Electrical & Pneumatic Diagrams

LH, RH, TM, BM, WM, FM, & PM Configurations

Page 19

Conduit Installation

EPCU Electrical Conduit, Optional Intrinsic Safety Barrier

Conduit and EPCU Conduit Connection Parts

Page 20

Power Modules & Wiring Diagram

EPCU 120/220 VAC & 24-48 VDC Power Modules

Page 21

Logic Module & Barrier Wiring

Optional ISB Wiring Requirements & Diagram,

EPCU Power Control Modes

Page 22

Barriers & Field Adjustments

ISB Description & Factory Programming, LED Display

Indicators, Timer Functions & Settings

Page 23

Class I Set-Up Procedure

Class I Purging Set-up

Page 24

Class II Set-Up Procedure

Class II Pressurization Set-up

Page 25

Operating Sequence

Class I Purging & Class II Pressurization Operation

Page 26

Trouble - Shooting Procedures

Page 27

Warranty and Liability Statements

Warranty Notes, General Terms, Limitations

Pages 28

& 29 System Maintenance

Pages 30 & 31

Customer Notes

Page 32

Systems Identification & Application Information

Important Notes

Pepperl+Fuchs' Enclosure Protection System’s purpose is to allow the use of general purpose or non-rated electrical or electronic devices, with exception to devices which produce excessive heat, utilize combustible gas, or expose arcing contacts to the hazardous atmosphere, in Type 4 or 12 enclosures in the place of explosion proof

Type 7 enclosures. Other purposes include heat, moisture and dust contamination prevention.

Description

Model 2001A is an enclosure pressurization or purging system that operates on a supply of compressed instrument air or inert gas. It regulates and monitors pressure within sealed (protected) enclosures, to prevent combustible dust accumulation or remove and prevent flammable gas or vapor accumulations. In Class II areas, the system maintains a “safe” (1.0") pressure. In Class I areas, the system accomplishes four air exchanges and maintains a “safe” (0.25") pressure. In addition, the system includes an electrical power control unit (EPCU) that monitors system operation and controls enclosure power. These processes reduce the hazardous (classified) area rating within the enclosure(s), in accordance with the NEC - NFPA 70, Article

500, NFPA 496 and ISA12.4

One (1) permanent file copy and one (1) operations copy of this Manual must be studied and retained by the operator of this System. User’s

Agents are responsible for transferring this Manual to the user, prior to start-up.

The contents of this manual have been arranged to allow the use of this product as a stand-alone device on equipment and enclosures supplied by the user or its agents. The Manual’s parameters encompass both

National Fire Protection Association (NFPA) requirements and

Pepperl+Fuchs requirements. Pepperl+Fuchs therefore acknowledges the use of NFPA 496 as a guideline, that we have enhanced certain NFPA requirements and that additional information has been compiled to complete this document. The Manual is intended as a complete guide and must be considered, unless specifically stated otherwise, that all directives contained herein are Pepperl+Fuchs requirements for safe, practical and efficient use of this product.

This System is not intended for use to protect enclosures or devices which contain ignitable concentrations of gases or vapors. This exclusion generally applies to process or product analyzing systems equipment.

All specifications are subject to change without notice.

2

BEBCO EPS

Pepperl+Fuchs®Inc. • 1600 Enterprise Parkway • Twinsburg, Ohio 44087-2245 • www.bebcoeps.com

Telephone (330) 486-0002 • FAX (330) 425-4607 • E-Mail: [email protected]

Identifying Your System

This Enclosure Protection System is offered in various styles. For proper installation and operation, examine the System

Model Number Nameplate to identify the System Style, Area Classification, and Type, as noted below.

SERIES

MODEL NUMBER

SYSTEM STYLE

STD - Standard

Requires manual operation of protective gas pneumatics

SYSTEM CLASS RATING

Defines Class & Group rating for

Protection System’s method of use

CI - Class I Purging system (Groups C&D)

IB - Class I Purging system (Group B)

CII - Class II Pressurization system

MAXIMUM

TOTAL

ENCLOSURE

VOLUME

Defines total protected enclosure(s) volume capacity for this particular system. Total enclosure(s) volume must be calculated without regard for consumed volume

Model 2001A-STD-CI Type X

2 CUBIC FEET MAXIMUM ENCLOSURE VOLUME

CLASS I, DIVISION 1, GROUPS C & D TO NONHAZARDOUS

AREA

CLASSIFICATION

Defines the area classification for which the system is suitable for operation

T3C

PURGE CONTROL FOR USE IN HAZARDOUS LOCATIONS. CLASSIFIED BY UNDERWRITERS LABORATORIES

INC . ® IN ACCORDANCE WITH THE NATIONAL FIRE PROTECTION ASSOCIATION

STANDARD FOR PURGED AND PRESSURIZED ENCLOSURES FOR ELECTRICAL EQUIPMENT

NFPA 496- 2003

7L93

APPROVED BY FACTORY MUTUAL AS ASSOCIATED TYPE X PRESSURIZATION CONTROL

EQUIPMENT FOR USE IN HAZARDOUS LOCATIONS. REDUCES THE INTERNAL AREA

OF A CONNECTED ENCLOSURE IN ACCORDANCE WITH DRAWING NUMBER 129-0208.

APPROVAL

MARKINGS &

DEFINITIONS

Identifies the current third party approvals for this system

SYSTEM TYPE

Type X

Reduces the internal enclosure area

Division rating from

Division 1 to nonhazardous

To assist you through the installation and operation of your pressurization / purge system, Pepperl+Fuchs has provided the following information boxes throughout this manual. This information is intended to clarify certain differences between the model styles and configurations and to warn the user / installer of potential dangers of electrical shock or enclosure over pressurization.

HELPFUL HINT IMPORTANT NOTE WARNING

BEBCO EPS



3

General Information

System Specifications

System Dimensions:

Shipping Weight (Lbs.):

Operating Temp. Range:

Supply Pressure Range:

Supply Requirements:

Safe Press. Setpoint(CI/CII):

Safe Press. Flowrate:

Class I Exchange Time:

System Supply Port:

Enclosure Supply Fitting:

Enclosure Reference Fitting:

EPCU Conduit Port Size:

EPCU Power Requirements:

(European 240 voltage only)

EPCU Power Consumption:

Power Relay Contacts:

Alarm Relay N.O. Contact:

Alarm Relay N.C. Contact:

See Pages 10 & 11

38

-20° F - 120° F

* 5 - 120 PSI max.

Clean Air or Inert Gas

0.25"/1" @ Safe Press.

** 0.1 - 3.5 SCFH / Cubic Ft.

*** As required

1/4" Tube Fitting

1/4" Tube Fitting

1/4" Tube Fitting

1/2" FPT

120 VAC 60 Hz 1Ø

240 VAC 50 Hz 1Ø

500 mA

20 Amps @ 240 VAC

20 Amps @ 28 VDC

**** 20 Amps @ 48 VDC

20 Amps @ 240 VAC

20 Amps @ 28 VDC

15 Amps @ 240 VAC

10 Amps @ 28 VDC

* With EPV-1 Vent - 120 psi max. to 5 PSI minimum

Without EPV-1 Vent - 5 psi maximum

In order to comply with the NFPA 496 standard requiring protection against over pressurization of the protected enclosure, the installer must install one of the following items in addition to the enclosure protection system.

a) Install an EPV-1 Enclosure Protection Vent on the protected enclosure.

b) Install a tamper-proof regulator upstream of the enclosure protection system's system supply inlet to pre-regulate protective gas supply to 5 psi max.

In addition, for small, tightly sealed enclosures, or to compensate for a fluctuating protective gas supply, it may be necessary to pre-regulate the protective gas supply to a constant 5 psi regardless of whether an EPV-1 is installed.

This will reduce the amount of "drifting" that can normally occur when maintaining a "Safe" pressure inside a protected enclosure. The pre-regulation can be accomplished by installing TR-10G Tamper-Proof Regulator accessories or equivalent.

For applications which require a steady "Safe" pressure setting or for protective gas supplies which may have dramatic pressure fluctuations, it may be necessary to utilize the PR-10 or PR-10G self relieving Precision

Regulators or equivalent to pre-regulate the protective gas supply to a constant 5 PSI (please consult factory for more information).

** Enclosure integrity determines actual flow rate

*** Time required to exchange 4 volumes within the enclosure(s), based on actual measured safe pressure flowrate or 5 minutes, whichever is greater

Material Specifications

Regulator Body:

Regulator Handle:

Enclosure Pressure Gauge:

Tube Fittings:

Tubing:

System Nameplates:

Fastener Hardware:

Mounting Plate:

Zinc w/ Enamel Finish, Brass

Polycarbonate

Alum. w/ Enamel Finish

316 SS Forged Body

316 SS 1/4" .035 Welded

Silkscreened Lexan ® & SS

Stainless Steel Screws & Bolts

316 14 Ga #3 Brush SS

EPCU Enclosure Body:

Enclosure Warning Nameplate:

Bead Blast Cast Aluminum

Silkscreened SS

Lexan ® is a registered trademark of the General Electric Corporation

Recommended Spare Parts

Qty Description Part # (supercedes)

1 Enclosure Pressure Indicator-CI

1 Enclosure Pressure Indicator-CII

510023 (001000)

513235 (001027)

1 Enclosure Pressure Control Regulator 513315 (002000)

1 Safe Pressure Switch-CI 510356 (005200)

1 Safe Pressure Switch-CII

1 Series 2000 Logic Module-Ver. 2.0

510357 (005205)

510279 (005000)

1 Series 2000 VAC Power Module

1 Installation & Operation Manual

1 Enclosure Warning Nameplate-CI

1 Enclosure Warning Nameplate-CII

510304 (005020)

129-0208

513008 (EWN-1)

513009 (EWN-2)

Reference part number above for current spare parts pricing. Immediate pricing is available to all confirmed customers.

Installation Tools & Testing Equipment

1/2" chuck drill

Complete set of drill bits

1/2" conduit knockout punch or 0.875" hole saw

Complete set of tubing, conduit bending, instrument fitting and electrical craftsman hand tools

0 - 250 scfh flowmeter (connected upstream of Protection

System to determine air consumption and flow during set-up)

Model 2001A System Accessories

Optional Enclosure Protection Vents

EPV-1-SA-00

EPV-1-SA-90

Straight w/ Spark Arrestor

Rt Angle w/ Spark Arrestor

Additional Items

SMK -2, -3 or -10

RAH

RAB-1

LCK

TCK

TR-10G

PR-10

PR-10G

SRM-4000

NJ...

System Mounting Kit

Div. 1 Remote Alarm Horn

Div. 1 Remote Alarm Beacon

L Fitting Conduit Kit

T Fitting Conduit Kit

Tamper-Proof Regulator w/ Gauge

Precision Regulator

Precision Regulator w/ Gauge

Switch Resistor Module

P+F NAMUR Sensor

4

BEBCO EPS



Enclosure & Device Design

Enclosure Design Requirements

1.

All windows must be shatterproof and sized as small as possible.

2.

All NFPA 496 required markings must be placed on or near all enclosure doors and covers.

3.

The enclosure must withstand an internal pressure of five (5) inches of water without sustaining permanent deformation and resist all corrosive elements in the surrounding atmosphere.

4.

All lightweight objects in the enclosure, such as paper or insulation, must be firmly secured.

5.

The enclosure should be constructed from materials such as metal or anti-static polycarbonate to meet or exceed Type 4 or 12 performance requirements, but does not require third party approval.

6.

The installation of obstructions or other barriers which block or impede the flow of protective gas must be avoided.

7.

The creation of air pockets or other areas which trap flammable gases within the enclosure or devices must be avoided.

8.

The enclosure should be located in an area where impact hazards are minimal.

9.

If the enclosure is nonmetallic and contains equipment which utilizes or switches power loads greater than 2500

VA, it must be constructed from substantially noncombustible materials, such as materials designed to meet or exceed ANSI/UL94 ratings of 94 V-0 or 94 5V.

Adjacent Enclosures

1.

Adjacent enclosures must be protected by one of the following means: a) purged or pressurized in series with the protected enclosure; b) purged or pressurized separately; or c) protected by other means; e.g. explosion proof enclosures, hermetically sealed devices or intrinsic safe circuits.

2.

Adjacent purged or pressurized enclosures must be designed to meet all construction requirements above.

Total Volume Calculation

1.

The total volume of all pressurized enclosures, devices and wireways must be considered.

2.

All enclosure, device and wireway volumes must be calculated without consideration of internally consumed space.

Device Ventilation

1.

Enclosed devices within the protected enclosure which do not exceed 1.22 cubic inches of free volume do not require ventilation to the protected enclosure.

2.

If the free volume of an internal device exceeds 1.22

cubic inches it must be protected by one of the following means: a) ventilated on the top and bottom sides with one (1) square inch of opening for each four hundred (400) cubic inches of volume within the internal protected enclosure, at a minimum diameter of one (1) quarter inch; b) purged in series with the protected enclosure or be purged separately; or c) protected by other means; e.g. explosion proof devices, hermetically sealed housings or intrinsic safe circuits.

Temperature Limitations

1.

The enclosure must have no surface area which exceeds

80 percent of the flammable or ignitable substance’s auto-ignition temperature.

2.

Internal devices which exceed this temperature must be protected by one of the following manners.

a) The device is enclosed in a chamber which is cUL or

FM listed as a hermetically sealed device which prohibits the entrance of flammable or ignitable substance, and maintains a surface temperature below temperature limits.

b) It can be proven by testing that the devices will not ignite the substance involved.

c) The device is purged in a separate enclosure that bears an ETW (Enclosure Temperature Warning

Nameplate). Devices may only be accessed after power has been removed and the device has been allowed to cool to safe temperature, or the area is positively known to be nonhazardous.

BEBCO EPS



5

Installation Overview

Typical Left Hand Configuration Installation Diagram

Model 2002-STD-CI-LH Shown

ENCLOSURE

PROTECTION

VENT

PROTECTED

ENCLOSURE

ENCLOSURE

PROTECTION

SYSTEM

ENCLOSURE

REFERENCE

TUBING

ENCLOSURE

SUPPLY TUBING

ENCLOSURE

CONNECTION

FITTINGS

SERVICE

VALVE

PROTECTIVE

GAS SUPPLY

SYSTEM

SUPPLY TUBING

EPCU BREATHER

DRAIN FITTING

ENCLOSURE

WARNING

NAMEPLATE

6

EPCU POWER & ALARM SIGNAL

WIRING CONDUIT & SEAL

BEBCO EPS



1/2"

PROTECTIVE

GAS SUPPLY

HEADER

Getting Started

Establishing Connection Sizes, Lengths & Bends

TYPICAL SINGLE PROTECTED ENCLOSURE CONNECTIONS

ENCLOSURE PROTECTION VENT

(Optional)

C

REFERENCE

ENCLOSURE

PROTECTION

SYSTEM

SUPPLY

PROTECTED

ENCLOSURE

A B E

Description

A

System

Supply Tubing

B

Enclosure

Supply

C

Enclosure

Reference

*Tubing or Pipe Diameter

Maximum Tubing / Pipe Length and

Maximum Number of Bends / Elbows

1/4" O.D. Tubing

Fully Reamed

20 Feet

10 Bends

1/4" O.D. Tubing

Fully Reamed

1/4" O.D. Tubing

Fully Reamed

5 Feet

5 Bends

20 Feet

10 Bends

D E

Multi - Enclosure Optional Remote

Connections Venting

1/2" I.D. Pipe

Fully Reamed

1/2" I.D. Pipe

Fully Reamed

10 Feet

5 Elbows

30 Feet

5 Elbows

1/2"

PROTECTIVE

GAS SUPPLY

HEADER

TYPICAL MULTIPLE PROTECTED ENCLOSURE CONNECTIONS

B D D

ENCLOSURE

PROTECTION

SYSTEM

SUPPLY

PROTECTED

ENCLOSURE

PROTECTED

ENCLOSURE

REFERENCE

PROTECTED

ENCLOSURE

A C

*NOTE: Tube and pipe sizes are trade sizes and are not equal in inside diameters.

DO NOT substitute tube for pipe with same trade size.

HELPFUL HINTS

To ensure adequate protective gas flow to the protected enclosure(s), all piping and tubing must be fully reamed.

Precautions must be taken to prevent crimping and other damage to protective gas piping and tubing.

When protecting multiple enclosures with a single enclosure protection system, the enclosures must be connected in series from the smallest to the largest to ensure adequate protective gas flow.

Determining Enclosure Inlet & Outlet Connection Locations

INLET

Connections for Heavier than

Air Gases and Vapors

OUTLET

INLET

OUTLET

HELPFUL HINTS

If flammable gases are lighter than air, the inlet connection to each enclosure must enter near a bottom corner. The outlet connection, for an optional enclosure protection vent or piping to an adjacent protected enclosure, must exit near an extreme opposite top corner. See diagrams to the left.

If flammable gases are heavier than air, inlet and outlet connections must be reversed.

In all cases, the most prevalent gas must determine the location of inlet and outlet connections.

Connections for Lighter than

Air Gases and Vapors

BEBCO EPS



7

System Mounting

IMPORTANT NOTES

The system should be mounted at EYE LEVEL.

Care must be taken to ensure the system and all protruding components are clear of all enclosure accesses (doors and covers) and conduit, pipe, tubing or cable entries.

LH, RH, TM, BM and WM configurations are intended for mounting adjacent to the protected enclosure.

LH, RH, TM & BM configurations are also suitable for

2" schedule 40 pipe mounting.

Determine the mounting configuration of your system using the diagrams on pages 10 & 11.

Remove and save the manila envelope (containing the enclosure warning nameplate) which may be taped to the outer surface of the mounting flange.

Although all systems are factory tested and calibrated, we strongly suggest a bench test of basic functions prior to installation.

Mounting LH, RH, TM, BM & WM Configurations

1 . Transfer hole pattern of System mounting plate to intended surface.

2.

Check for obstructions hindering bolt fastening, drill and ream the mounting holes before mounting the system.

3.

Secure the system to the enclosure, or other mounting surface, using one (1) SMK-3 or equivalent - six (6) 3/8" x 3/4" stainless steel bolts, nuts and lock washers.

*WM requires one (1) SMK-2 or equivlent - four (4) 3/8" x 3/4" stainless steel bolts, nuts and lock washers.

Mounting FM & PM Configurations

HELPFUL HINTS

FM and PM configurations are designed to mount through a panel cutout one (1) inch smaller than the overall height and width of the system mounting plate, using clips and fasteners provided with SMK -10. This design feature eliminates the need to drill the system mounting bolt holes in the protected enclosure.

FM configurations are intended for mounting adjacent to the protected enclosure.

PM configurations are intended for mounting through a cutout in the protected enclosure surface.

1.

Transfer panel cutout pattern to the intended surface.

2.

Check for obstructions which could prohibit bolt fastening or system pneumatic and electrical connections.

3.

Cut panel cutout pattern on the intended surface.

4.

Deburr all cutout surfaces.

5.

Secure system to enclosure using SMK-10, or equivalent

- ten (10) 1/4" x 3/4" stainless steel nuts, bolts, mounting clips and lock washers.

Typical Examples of Surface, Pipe, Panel & Frame Mounted Systems

Typical Surface Mounted System

(Model 1002-LPS-LH Type Z shown)

8

Typical Pipe Mounted System

(Model 1002-LPS-LH Type Z shown)

Typical Panel/Frame Mounted System

(Model 1002-LPS-PM Type Z shown)

BEBCO EPS



Hardware Mounting

Optional Enclosure Protection Vent

All configurations must be mounted in a true vertical position.

The vent must be located to provide access for routine testing of the vent’s flapper assembly. A minimum 8" clearance is required below the vent opening.

1.

Determine the vent’s mounting configuration, i.e.;

-00 vertical mount or -90 side mount. (See photos below)

2.

Determine vent location and layout vent mounting hole on the protected enclosure. (As determined on page 7,

“Getting Started”)

3.

Using a 0.875" hole saw or 1/2" conduit punch, drill and deburr the enclosure protection vent mounting hole.

4.

Remove the hub mounting nut from the vent hub and place the hub, with O-ring intact, through the mounting hole. The O-ring must be on the outside of the protected enclosure.

5.

Reinstall the hub mounting nut to the mounting hub from inside the protected enclosure and tighten.

Warning Nameplate(s)

An EWN (Enclosure Warning Nameplate) must be located in a prominent position on or near all enclosure accesses

(doors and covers).

One (1) EWN is provided with each system, located in the manila envelope taped to the mounting flange of the system.

Additional EWN’s are available from Pepperl+Fuchs.

All EWNs provide labeled spaces allowing the customer to mark the protected enclosure with: 1) a T Code (temperature identification number), 2) Class, Group and Division of surrounding area, and 3) NFPA pressurization Type X, Y or Z, as may be required by plant and local codes and is required by NFPA 496.

An ETW (Enclosure Temperature Warning nameplate) must be located in a prominent position on or near all enclosure accesses (doors and covers) when the temperature of an internal component exceeds 80 percent of the ignition temperature of the flammable vapor, gas or dust involved.

An ETW warns the operator to deenergize all equipment for a specified length of time, allowing the protected equipment to cool before opening the protected enclosure. The length of time required is determined by the customer and can be factory or field engraved.

All EWNs and ETWs are furnished with an adhesive back, but should also be riveted or screwed to the protected enclosure.

EPV - 1 - SA - 00

Vertical Mount

Enclosure Warning Nameplate - Class I

Enclosure Warning Nameplate - Class II

EPV - 1 - SA - 90

Side Mount

Enclosure Temperature Warning Nameplate

BEBCO EPS



9

20"

Mounting Plate Dimensions

Model 2001A

.375" O.D.

TYP. 6

10.5"

4"

3.375"

.625"

.6875"

10.5"

4"

3.375"

.625"

.6875"

.375" O.D.

TYP. 6

10" 9.5"

20"

18" 19.312"

11"

2001A-STD-LH

(Left Hand Configuration)

11"

2001A-STD-RH

(Right Hand Configuration)

IMPORTANT NOTE

Dimensions DO NOT include Systems ordered with an

Area Classification of IB (Class I, Division 1, Group B).

Consult factory for mounting plate dimensions.

10.5" 10.5"

10

20.75"

10.5"

4.25"

10.375"

19.25"

2001A-STD-TM

(Top Mount Configuration)

.375" O.D.

TYP. 6

20.75"

20.0625"

11.25"

2001A-STD-BM

(Bottom Mount Configuration)

.375" O.D.

TYP. 6

4.25"

10.5"

BEBCO EPS



Mounting Plate Dimensions (cont.)

Model 2001A

6"

12.5"

20"

18"

2"

9"

.375" O.D.

TYP. 4

1"

TYPICAL -WM

MOUNTING FLANGE

11"

2001A-STD-WM

(Wall Mount Configuration)

IMPORTANT NOTE

Dimensions DO NOT include Systems ordered with an

Area Classification of IB (Class I, Division 1, Group B).

Consult factory for mounting plate dimensions.

.25" O.D.

TYP. 10

Panel Cutout

12" 10.25"

1.25"

Panel Cutout

21"

22"

13"

2001A-STD-FM & 2001A-STD-PM

(Frame & Panel Mount Configuration)

BEBCO EPS



11

Pneumatic Tubing Requirements

Protective Gas Supply Requirements

The protective gas supply to the protection system must be a clean, instrument quality compressed air or nitrogen and must contain no more than trace amounts of flammable gas, vapor or dust.

The protective gas supply compressor intake must originate in a nonhazardous location. Suction duct passing through a hazardous location and the protection system tubing and piping must be fabricated from noncombustible materials suitable for prevailing hazards and environmental conditions.

The protective gas supply must originate from a dedicated instrument quality compressed air header (1/2" pipe or larger), no farther than twenty (20) feet from the protection system. Local compressors and gas cylinders should not be used before consulting with Pepperl+Fuchs.

The protective gas supply to the protection system must be equipped with a tamper-proof regulator set at 5 psi maximum.

Exception: If the protected enclosure(s) is equipped with an

EPV-1 Enclosure Protection Vent, the protective gas supply to the protection system must not exceed 120 psi maximum,

5 psi minimum. (See page 4, "System Specifications" for additional information concerning protective gas supply requirements.)

SC-4 NC-4

SYSTEM SUPPLY FITTINGS

Pneumatic Connection Requirements

ALL FITTINGS MAY BE CUSTOMER OR FACTORY FURNISHED

1.

For system supply, one (1) SC-4 1/4" Male Straight

Connector or one (1) NC-4 1/4" Male Elbow Connector or equivalent fitting per system.

NOTE: Above fitting is required only if protection system is furnished with an optional In Line Filter Kit

(Model ILFK) accessory.

One (1) similar fitting which will connect the inert gas supply tubing to the inert gas supply header connection point and one (1) lot of 1/4" O.D., .035" wall thickness, welded or seamless stainless steel tubing.

2.

For enclosure supply, one (1) EFC-4 1/4" Flush

Connector, or one (1) EBC-4 1/4" Feed-Through

Connector or equivalent fitting per system.

3.

For enclosure reference, one (1) EFC-4 1/4" Flush

Connector, or one (1) EBC-4 1/4" Feed-Through

Connector or equivalent fitting per system.

4.

One (1) lot of 1/4" O.D., .035" wall thickness, welded or seamless stainless steel tubing.

5.

For multiple enclosure connections, two (2) EPC-10 1/2"

Pipe Mounting Hubs or equivalent and 1/2" 150# rated pipe couplings & unions per interconnection.

One (1) lot 150# rating 1/2" galvanized or aluminum pipe and fittings, fully reamed and unrestricted.

PM Pneumatic Connection Requirements

In addition to item numbers 1, 4 and 5 above, the following fittings are required for all PM configurations.

1.

For system supply on PM configurations, one (1) additional EBC-4 or equivalent 1/4" Through Bulkhead

Fitting per system is required.

2.

For atmospheric reference, one (1) PRB-4 or equivalent

1/4" female bulkhead fitting and stainless steel sintered element is required.

EFC-4 EBC-4

ENCLOSURE SUPPLY & REFERENCE FITTINGS

PRB-4

SYSTEM ATMOSPHERIC REFERENCE FITTING

12

EPC-10

MULTIPLE ENCLOSURE CONNECTION FITTING

BEBCO EPS



Tubing Connection Points

LH, RH, TM, BM, WM & FM Configuration Connection Points

Enclosure

Pressure

Gauge

Enclosure

Reference

Inlet

Flame

Arrestor

Venturi

Orifice

Mounting

Plate

System

Supply

Inlet

Enclosure

Pressure

Control

Regulator

Enclosure

Supply

Outlet

PM Configuration Connection Points

Enclosure

Pressure

Gauge

Atmospheric

Reference

Inlet

Electrical

Power

Control Unit

Flame

Arrestors

Mounting

Plate

System

Supply

Inlet

Enclosure

Pressure

Control

Regulator

Enclosure

Supply

Outlet

HELPFUL HINT

Pneumatic Connections are bolded.

BEBCO EPS



13

Tubing Installation

HELPFUL HINTS

All work must be performed by technicians qualified in pneumatic tubing and electrical conduit installation.

Pepperl+Fuchs recommends the use of .035" wall thickness, welded or seamless stainless steel tubing.

If flexible tubing is used, it must be installed in a manner which will protect it from damage and corrosion.

Tubing LH, RH, TM, BM, WM & FM Configurations

System Supply Connections

1.

Select or install a protective gas supply header tap, fitted with the proper tube size fitting and located within twenty (20) feet of the enclosure protection system.

2.

If a service valve is placed between the protective gas supply header and the enclosure protection system, it must be installed in close proximity of the protected enclosure and be labeled in accordance with NFPA 496,

2003 edition.

3.

Select the appropriate fittings required to connect the protective gas supply to the protection system regulator as determined on page 12, “Pneumatic Tubing

Requirements”.

4.

Determine appropriate tubing route from the protective gas supply header to the protection system regulator.

5.

Bend tubing using industrial grade benders, check tubing fit to ensure proper seating between the tubing and fittings. Fully ream all tubing ends.

6.

Install tubing and tighten all fittings to fitting manufacturer’s specifications. Secure tubing to appropriate structural supports as required.

Enclosure Supply & Reference Connections

1.

Choose location for the enclosure supply connection(s) based on the requirements on page 7, “Getting Started”.

2.

Place the enclosure reference connection fitting directly behind the enclosure protection system whenever possible. For systems protecting multiple enclosures in series, the enclosure reference connection fitting must be placed on the last enclosure in the series.

(See page 7, “Getting Started”)

3.

Drill and deburr enclosure supply and reference fitting holes on the protected enclosure. Mount the fittings.

4.

Determine appropriate route for the enclosure supply and reference tubing.

5.


6.

Install tubing and tighten all fittings to fitting manufacturer’s specifications. Secure tubing to appropriate structural supports as required.

Tubing PM Configurations

Enclosure Bulkhead Fittings

1.

Select the fittings required to install the System Supply,

System Supply Bulkhead Fitting and Atmospheric

Reference Bulkhead Fitting, (see page 12, “Pneumatic

Tubing Requirements”).

2.

Choose location for the system supply bulkhead fitting.

This fitting allows the protective gas supply to pass through the wall of a protected enclosure to the protection system’s regulator supply inlet connection.

3.

Choose location for the atmospheric reference bulkhead fitting. This fitting allows the enclosure pressure gauge and Electrical Power Control Unit (EPCU) to reference atmospheric pressure.

4.

Drill and deburr system supply and reference bulkhead fitting holes in the protected enclosure. Mount the fittings.

System Supply & Reference Connections

1.

Select or install a protective gas supply header tap, fitted with the proper tube size fitting and located within twenty (20) feet of the enclosure protection system.

2.

If a service valve is placed between the protective gas supply header and the protection system, it must be in close proximity of the protected enclosure and labeled in accordance with NFPA 496.

3.

Determine appropriate tubing route from the protective gas supply header to the system supply bulkhead fitting.

4.

Determine appropriate tubing route from the system supply bulkhead fitting to the protection system regulator.

5.

Determine appropriate tubing route from the atmospheric reference bulkhead fitting to the enclosure pressure gauge’s reference inlet connection.

6.


7.

Install tubing and tighten all fittings to fitting manufacturer’s specifications. Secure tubing as required.

14

BEBCO EPS



Electrical Supply Requirements

General Wiring Requirements

WARNING

THIS DEVICE CONTAINS ELECTRICAL PARTS WHICH

CAN CAUSE SHOCK OR INJURY

All electrical connections, conduit and fittings on the protected enclosure must be suitable for the hazardous location in which they are installed. In addition, all conduit and wire must be installed in accordance with NEC as required and all relevant plant and local codes.

Conduit seals must be utilized on all electrical conduit connections and poured with an approved compound prior to operation of the protection system.

Exception: Do not use seals on conduit used as a protected

“wireway” to supply protective gas to adjacent protected enclosures. The same conduit can be utilized for both electrical and pneumatic service to an adjacent protected enclosure(s), provided the conduit is oversized to allow a minimum free clearance equal to or larger than the pipe size required between multiple enclosures as stated on page 7,

“Getting Started”.

HELPFUL HINT

Pepperl+Fuchs recognizes it may be impractical to pour all electrical conduit seals prior to installation in the field. However, all conduit connections must be sealed for proper testing and operation of the

Enclosure Protection System. Therefore,

Pepperl+Fuchs recommends the use of temporary seals such as duct seal or masking tape for bench or shop testing, prior to final field installation.

Typical Enclosure Wiring Methods

I n a general sense, protected enclosures should be wired similar to explosion proof enclosures, in accordance with

Article 500 of the National Electric Code - NFPA 70.

Single conductor wiring should be placed in rigid metal conduit, seal-flex conduit or other mediums approved for use in the hazardous location surrounding the protected enclosure. Additionally, NFPA 496 requires the use of approved seals on all pressurized enclosure conduit wiring entries, in accordance with NFPA 70. Furthermore, the use of an approved seal is simply the most practical way to prevent excessive leakage through conduit connections.

However, while explosion proof enclosures require conduit seals on all cable entries, in accordance with NFPA 70. Other methods of sealed cable entries that are suitable for hazardous locations can be used, such as compression glands.

In conclusion, there are two primary goals. First, the installer should ensure that all associated wiring and cable is protected by pressurization or other means, such as explosion proof conduit or intrinsic safety barriers. Secondly, the installer should ensure that all associated conduit and wireways are sealed to conserve protective gas, unless they are used to supply protective gas to other enclosures or devices.

Typical Enclosure Wiring Connections

Conduit

Explosion

Proof Device

Seal

Conduit

Intrinsically

Safe Or Fiber

Optic Device

EPCU Power Requirements

The Electrical Power Control Unit's (EPCU) electrical power source must originate from a circuit breaker or fused disconnect suitable for the hazardous location in which it is installed. The power source should be uninterrupted and the switch must be located within fifty (50) feet of the protected enclosure(s) and the enclosure protection system and be properly marked. For EPCU power specifications see page

4, "System's Specifications".

Alarm Signal Requirements

Pepperl+Fuchs strongly recommends use of the optional alarm system contacts of the EPCU, connected to an alarm system located in a constantly attended location to indicate the failure of the enclosure protection system. For EPCU alarm signal specifications see page 4, "System's

Specifications".

Seal

Gland

Fitting

Cable

Conduit

Seal

Pressurized

Raceway

Intrinsically

Safe Or Fiber

Optic Device

Independently

Pressurized

Device

Adjacent

Pressurized

Device

Protected Enclosure

Or Device

BEBCO EPS



15

Electrical Power Control Unit

Power Mode

Selector Switch

General Layout & Electrical Conduit Connections

EPCU Electrical Rating

Nameplate

Power Mode

Selector Switch

(Optional Mounting Hole

-Factory Use Only-)

Type 7

Explosion Proof

Enclosure

LED Display

Type 7

Explosion Proof

Screw Cover

Type 7

Explosion Proof

Breather Drain

(See Important

Notes below)

1/2" NPT Conduit

Connection Ports

Typical 6

(See Important

Notes below)

IMPORTANT NOTES

For proper moisture drainage of the Type 7 enclosure, the installer must 1) move the Type 7 breather drain to one of the bottom conduit entrances or 2) use drain seals on all conduit connected to the bottom two conduit entrances.

The Type 7 breather drain is not provided or required with PM configurations.

Top two conduit entrances will be dedicated for Intrinsic Safe wiring ONLY when the EPCU is supplied with

Pepperl+Fuchs' optional ISB Intrinsic Safety Barriers.

EPCU LED Displays

Class I - Alarm Only Class I - Alarm & Bypass

16

Class II - Alarm Only Class II - Alarm & Bypass

BEBCO EPS



EPCU Power Rating

EPCU Electrical Power Rating Nameplate

The EPCU (Electrical Power Control Unit) of this Type "X" purging / pressurization system is offered in various styles. For proper installation and operation, begin by examining the EPCU Electrical Rating Nameplate to identify the System Input voltage and power requirements, enclosure power and alarm contact ratings and third party approval markings. Next, match the LED display of your EPCU with one of the displays shown on page 16. The EPCU LED Display will help identify the options featured on your system e.g. Normal Running mode or Conditional Bypass Class I purging (timer) or Class II pressurization

(no timer).

EPCU SERIAL

NUMBER

REQUIRED WARNING

STATEMENTS

MODEL 2000 ELECTRICAL POWER CONTROL UNIT

CAUTION: OPEN CIRCUIT BEFORE REMOVING COVER

ATTENTION: OUVRIR LE CIRCUIT AVANT D'ENLEVER LE COUVERCLE

SERIAL NO.

XXXXXX INPUT VOLTAGE & POWER REQUIREMENTS

CSA Encl. 3

CLASS I, DIV. 1, Gr C&D

CLASS II, DIV. 1, Gr E, F, G HAS

UL & FM APPROVALS ONLY

ENCL POWER & ALARM CONTACTS

ARE RATED 120/240 VAC, 20 AMPS

120 SINGLE PHASE, 60 CYCLE, 1 AMP

240 SINGLE PHASE, 50 CYCLE, 1 AMP

AREA CLASSIFICATION

Defines the area classifications for which the EPCU is suitable for operation

EPCU INPUT POWER

REQUIREMENTS

Factory set at time of order

Assembled EPCU Electronics Module

Logic Module

Power Module

Cable

120/240 VAC

Power Module Pressure Switch

Module

BEBCO EPS



17

Electrical & Pneumatic Diagrams

LH, RH, TM, BM, WM & FM Configurations

Electrical Power

Supply Conduit

Hub

Optional Enclosure

Protection Vent

Conduit Seal Union Union Conduit Seal

System

Supply

Breather

Venturi

Orifice

Electrical Power

Control Unit

Drain

Sintered

Vent

Enclosure

Pressure Gauge

Enclosure

Reference

Tubing

System Supply

Tubing

Enclosure

Supply

Tubing

Enclosure Pressure

Control Regulator

Enclosure Reference

Bulkhead Fitting

Enclosure Supply

Bulkhead Fitting

Protected Enclosure

PM Configurations

Optional Enclosure

Protection Vent

Electrical Power

Supply Conduit

Hub

System

Supply

Atmospheric Pressure

Reference Bulkhead

Fitting

System Supply

Bulkhead Fitting

Inlet

Electrical Power

Conduit

Conduit Seal Union Union

Atmospheric

Reference

Tubing

Enclosure Pressure

Gauge

Enclosure

Pressure

Reference

Enclosure

Pressure

Reference

Electrical Power

Control Unit

Enclosure Pressure

Control Regulator

System

Supply

Tubing Enclosure

Supply

Discharge

Conduit Seal

Electrical

Power to

Enclosure

18

Protected Enclosure

BEBCO EPS



Conduit Installation

EPCU Electrical Conduit

Unplug the four unlabeled conduit entrances located on the sides and bottom of the EPCU enclosure (See page 16,

"EPCU Layout" for conduit entrance layout).

The installer must mount the Type7 drain fitting supplied with the system (except for PM configurations) in one of the bottom conduit entrances of the EPCU, or utilize drain seals on all conduit connected to the bottom two (2) conduit entrances of the EPCU.

Following the instructions listed below, install all conduit, fittings and seals (or drain seals if utilized) between the

EPCU, alarm system (if utilized) and the protected enclosure(s). Plug all remaining EPCU conduit entrances.

1.

Choose the location for the enclosure’s electrical conduit connection(s) based on the requirements on page 15,

“Electrical Supply Requirements”.

2.

Drill and deburr enclosure conduit fitting holes in the protected enclosure. Mount the fittings.

3.

Determine appropriate route for the enclosure electrical enclosure and alarm signal conduit.

4.

Measure, cut and thread conduit, check conduit fit to insure proper seating. Fully ream all conduit.

5.

Install conduit and tighten all fittings to fitting manufacturers specifications. Secure conduit to appropriate structural supports as required.

6.

Seal all conduit with an approved compound prior to operation of the protection system.

Optional Intrinsic Safety Barrier Conduit

Systems supplied with optional Intrinsic Safety Barriers (ISB) will be supplied with clearly labeled isolated conduit entries, a solid body wireway with snap cover and plexiglass wiring partitions. These accessories provide a fully isolated wiring path to the barrier wiring terminal located on the lower left corner of the EPCU Logic Module. All IS wiring must be isolated.

1.

Choose the location for the enclosure’s IS conduit connection(s) based on the requirements on page 15,

“Electrical Supply Requirements”.

2.

Drill and deburr enclosure conduit fitting holes in the protected enclosure. Mount the fittings.

3.

Determine appropriate route for the IS conduit.

4.

Measure, cut and thread conduit, check conduit fit to insure proper seating. Fully ream all conduit.

5.

Install conduit and tighten all fittings to fitting manufacturers specifications. Secure conduit to appropriate structural supports as required.

6.

Seal all conduit with an approved compound prior to operation of the protection system.

EPCU Conduit Connection Parts

Fitting Kits Can Be Factory Furnished

1.

To connect enclosure power from the EPCU to the protected enclosure, one (1) LCK (L fitting Conduit Kit) or equivalent conduit elbow, coupling and seal fittings.

2.

For EPCU to enclosure wiring connection with one (1) additional conduit connection path, one (1) TCK (T fitting

Conduit Kit) or equivalent conduit tee, coupling and seal fittings.

IMPORTANT NOTE

Model LCK & TCK are offered primarily to OEM's attempting to achieve a "field ready" installation. In all cases, limited pipe fitting skills will be required.

Pre-cut 150# galvanized steel pipe nipples can be acquired from local plumbing shops, but a hole saw or punch and wrenches are required to install kits.

TCK “T” Fitting

Conduit Kit

LCK “L” Fitting

Conduit Kit

BEBCO EPS



19

Power Modules & Wiring Diagram

EPCU 120/240 VAC Power Module Layout

Isolated Coil

Voltage Transformer

Power Control Switch

Cable Header

Voltage Input Selector

Header (factory set for

120 VAC power)

Pressure Switch

Cable Header

Logic Module

Cable Header

1 Amp Input Fuse

Redundant Safe

Pressure Relay

Rapid Exchange ®

Solenoid Valve (RESV)

Relay

Alarm Relay

RESV Factory Wiring

Terminal

Enclosure

Power Relays

20 Amp Enclosure

Power Fuse

EPCU 120/240 VAC

Power Module

VAC & VDC Power Module Electrical Wiring Diagram

Field Wired

Power Module

Terminals

20 AMP

1

1

FUSES 1

Isolated

Enclosure

Power Relays

NO

12

12

12

NO

Isolated

Alarm

Relay

NO NC

1 2 3 4 5 6 7 8 9 10

Power Module

Wiring Terminal

EPCU Power

Supply Terminals

120 VAC

*240 VAC ( Optional voltage )

Gnd

Gnd

Hot

Hot

Neu

Neu

In Out In

Enclosure

Power

Supply

Terminals

Out

NO Com NC

Remote Alarm

Relay Terminals

* European Single Phase 240 VAC only.

Power and alarm terminals are feed-thru dry switch contacts.

Caution should be exercised to ensure that the EPCU wiring is properly connected.

All terminal connections to the EPCU should be wired with spade or round lugs.

20

Using 12 gauge maximum to 16 gauge minimum wire only, check EPCU power requirements (See page 15) and wire to the EPCU power source and alarm system (if utilized). Then route power source(s) through the EPCU power in and out terminals to all non-rated devices within the protected enclosure(s).

BEBCO EPS



Logic Module & Barrier Wiring

Barrier Fault & Active

Status Indicators

Barrier C

Socket

Barrier B

(Installed)

Barrier A

Socket

EPCU Logic Module & Pressure Switch Module

Primary

Microprocessor

Factory

Programing

Header

Redundant

Controller

(GAL)

Power Module

Cable Header

Primary Safe

Pressure Switch

EPCU Pressure

Switch Module

EDT, SLT &

RET Timers Barrier

Wiring

Terminal

Pressure Switch

Calibration Access

LED Status

Display

EPCU Logic Module

Optional ISB Wiring Requirements

( - ) BLUE ( + ) BROWN

INTRINSICALLY SAFE AUXILIARY INPUTS

A B C

+ + +

All optional intrinsic safety (IS) wiring must be isolated from all other electrical wiring using the dedicated IS conduit entrances and wireway of the EPCU, (See "Optional ISB

Conduit Installation" on page 19 for more details). In addition, all wiring must be installed in accordance with the NEC and all relevant local and plant codes.

The Intrinsic Safety Barriers are designed to function in conjunction with a customer furnished switch and SRM-

4000 Switch Resistor Module, or an NJ... NAMUR sensor.

The customer supplied switch must have dry contacts which contain no inductance or capacitance.

The SRM-4000 Switch Resistor Module and the NJ...NAMUR

sensor are supplied with approximately ten (10) feet of wiring. Using 16 to 18 gauge shielded wire, the cable lengths can be extended to a maximum of 100 feet.

In all applications, the module of the Switch Resistor Module

Cable must be installed as close to the customer supplied switch as possible for proper operation.

Wiring lugs are not recommended for Intrinsic Safety Barrier wiring connections.

See page 22 for barrier operation and factory programing.

Space for Optional

Redundant Safe

Pressure Switch

EPCU Power Control Modes

NORMAL RUNNING (NR) MODE

EPCU features an on-off push-button power control switch to activate control functions. Switch must be depressed to initiate start-up. After completion of start-up, safe pressure must be lost or switch must be depressed to deenergize enclosure power relays.

CONDITIONAL BYPASS (CB) MODE

EPCU features an on-off-bypass power control switch to activate control functions. Switch must be set to "on" position to initiate start-up. After enclosure power is energized, safe pressure must be lost or switch must be set to "off" position to deenergize enclosure power. After enclosure power is energized, switch may be set to "bypass" position, to temporarily latch enclosure power relays. A flashing LED then indicates bypass engaged, and the enclosure can then be accessed without deenergizing power (performed under specific conditions). Following access, safe pressure must be reestablished to resume normal operation. At that time, the switch may be reset to the on position, without disruption of enclosure power. Alarm relay normally deenergizes only upon loss of safe pressure, but can be factory programmed to deenergize when bypass is engaged, if specified at time of order.

BEBCO EPS



21

Barriers & Field Adjustments

Optional Intrinsic Safety Barriers Description

The EPCU Logic Module can accommodate up to three intrinsic safety barriers, to interact with remote devices and affect operation of the EPCU. The barriers are installed and programmed by the factory at time of order, and they are designed to function either in conjunction with a customer furnished switch and a Pepperl+Fuchs furnished resistor network cable, or a Pepperl+Fuchs furnished proximity detector. Each barrier develops a low power signal, to create a two wire closed loop circuit. Operational status of each barrier is indicated by a green LED to show active (closed switch) status, and by a red LED to show faulted (line breakage) cable status. All barriers can be reprogrammed to duplicate other barrier functions as required, upon specific request.

Optional ISB Factory Programing

Barrier A Function - when switch opens

Disables start-up cycle

Deenergizes enclosure power and alarm relay

Functions parallel to safe pressure switch

Barrier B Function - when switch opens

Not programmed for this model - custom applications only

Barrier C Function - when switch closes

Energizes RESV Relay - custom applications only

LED Display Indicators

Power Off: Enclosure Power Relays Deenergized

Power On: Enclosure Power Relays Energized

Safe Pressure: Enclosure Pressure > 0.15" or 0.50" w.c.

Timer Running: Exchange Timer Active - Class I Only

Alarm Active: Enclosure Pressure < 0.15" or 0.50" w.c.

Bypass Engaged: Control Bypass Active - CB Mode

Field Adjustable Timer Functions

EDT (Exchange Delay Timer) (FA Style only) provides a time delay to prevent Rapid Exchange ® solenoid valve from energizing until safe pressure can be stabilized.

SLT (Solenoid Latching Timer) (FA Style only) provides a time delay to keep the Rapid Exchange ® solenoid valve energized until Rapid Exchange ® pressure is detected. If the pressure is not detected, the EPCU will reset.

RET (Rapid Exchange ® Timer) provides a time delay after

Rapid Exchange ® pressure is detected, to allow four volume exchanges (ten volumes for motors) prior to energizing the enclosure power relays. In Class I areas only, if Rapid

Exchange ® pressure is lost or interrupted during time delay cycle, the EPCU will reset.

EDT, SLT & RET Timer Settings

Rotary Switch

Body

E

F

D

C

B

A

9

0

8

EDT & SLT Timer

POSITION TIME IN SECONDS

D

E

F

9

A

B

C

6

7

4

5

8

2

3

0

1

50

55

60

65

70

75

80

25

30

35

40

45

5

10

15

20

1

2

3

4

5

6

7

RET Timer

POSITION TIME IN MINUTES

D

E

F

9

A

B

C

6

7

4

5

8

2

3

0

1

50

55

60

65

70

75

80

25

30

35

40

45

5

10

15

20

NOTE: Power must be removed from the EPCU via the local disconnect switch for approximately 10 seconds for timer adjustments to reset.

EDT & SLT Timers are not functional on Model 2001A.

22

BEBCO EPS



Class I Set-up Procedure

HELPFUL HINTS

Regulator may be in the locked position upon arrival. To adjust regulator, pull handle to outward position.

To test the vent’s operation, gently prod the vent flapper open with a soft pointed object, ( example: eraser end of a pencil) ensuring that the vent valve works freely. On vertically configured vents, this can be accomplished from within the protected enclosure. Side mounted -90 configured vents can be tested by removing the pipe plug at the bottom of the mounting tee. Multiple operations require only one test per day if enclosure is not opened or left unattended.

Class I Purging Set-up

1.

Close the Enclosure Pressure Control Regulator fully by turning counterclockwise (CCW).

2.

Temporarily connect the inert gas supply to a 0 to 250

SCFH flowmeter. Connect the outlet of the flowmeter to the Enclosure Pressure Control Regulator.

3.

Check operation of Enclosure Protection Vent (if utilized).

4.

Seal enclosure(s) and adjust Enclosure Pressure Control

Regulator by opening slowly clockwise (CW) to set a

“Safe” 0.25 inch pressure on the Enclosure Pressure

Indicator.

NOTE: If pressure setting is difficult to stabilize or set, see page 26, “Trouble-Shooting Procedures”.

5.

When safe enclosure pressure is stabilized, measure flow of inert gas supply through Protection System, to calculate required exchange time, based on the Class I exchange time chart located to the left. Close the

Enclosure Pressure Control Regulator fully.

6.

Set RET timer (see page 21 for timer location) for required exchange time based on the Class I Volume Exchange

Time, five (5) minute minimum.

7.

Install and tighten cover of EPCU. Ensure the conduit is sealed with approved compounds.

8.

Depress the On-Off push-button (NR mode) or turn selector switch to the On position (CB mode). All LEDs should illuminate fully for two seconds (self test), then all

LEDs should turn off except Power Off (solid red) and

Alarm Activated (flashing red) LEDs.

9.

Turn Enclosure Pressure Control Regulator slowly CW to set the Enclosure Pressure Indicator to a "Safe" 0.25

inch pressure. The Safe Pressure and Timer Running

LEDs should be on, the Alarm Active LED should turn off.

Check for a 0.10 to 0.15 inch trip point by slowly stroking the indicator from 0.10 to 0.25 inch readings. The Safe

Pressure, Alarm Active and Timer Running LEDs should turn on and off when the indicator reads between 0.10

and 0.15 inches.

10. Having ensured that the Safe Pressure and Timer Running

LEDs are functioning properly, Start-Up Procedures located on page 25 may now be followed to step through a complete start up cycle, ensuring that the System functions normally during all phases of operation.

CLASS I VOLUME EXCHANGE TIME CHART

MEASURED FLOW

0.10 SCFM / 6 SCFH

0.25 SCFM / 15 SCFH

0.50 SCFM / 30 SCFH

0.75 SCFM / 45 SCFH

1 SCFM / 60 SCFH

REQUIRED EXCHANGE TIME

40 Minutes per Cubic Foot



5.5 Minutes per Cubic Foot


2 SCFM / 120 SCFH

3 SCFM / 180 SCFH


1.5 Minutes per Cubic Foot

4 SCFM / 240 SCFH or greater 1 Minute per Cubic Foot

NOTE: The volume exchange time chart is based on a four

(4) enclosure volume exchange. Multiply the required exchange time above by 2.5 for applications requiring a ten (10) volume exchange (motors).

Regardless of enclosure volume or system flow rate,

Pepperl+Fuchs requires that operators withhold power to the enclosure while inducing Class I exchange, for at least five (5) minutes. Normal exchange time calculations should be doubled if large obstructions block inert gas flow.

The Start-Up Instruction Nameplate Exchange Time Slot will be blank, but the unit may feature a set of direct factor nameplates with self-adhesive backing such as “TEN

MINUTES”, for application to the start-up instructions, dependent on how the system was specified and purchased.

Field modification of this nameplate, to show a direct factor, is acceptable as noted above if the method used to mark the nameplate does not deface the instructions listed. Materials used for the marking must be indelible and withstand prevailing environmental conditions.

11. Cease testing and remove test equipment (Flowmeter).

12. Connect the inert gas supply directly to the Enclosure

Pressure Control Regulator.

BEBCO EPS



23

Class II Set-up Procedure

HELPFUL HINTS

Regulator may be in the locked position upon arrival. To adjust regulator, pull handle to outward position.

To test the vent’s operation, gently prod the vent flapper open with a soft pointed object, ( example: eraser end of a pencil) ensuring that the vent valve works freely. On vertically configured vents, this can be accomplished from within the protected enclosure. Side mounted -90 configured vents can be tested by removing the pipe plug at the bottom of the mounting tee. Multiple operations require only one test per day if enclosure is not opened or left unattended.

Class II Pressurization Set-up

1.

Close the Enclosure Pressure Control Regulator fully, by turning it counterclockwise (CCW).

2.

Remove all traces of combustible dust from the protected enclosure using a suitable vacuum tool.

3.

Check operation of Enclosure Protection Vent (if utilized).

4.

Seal all protected enclosure(s).

5.

Depress the On-Off push-button (NR mode) or turn selector switch to the On position (CB mode). All LEDs should illuminate fully for two seconds (self test), then all

LEDs should turn off except Power Off (solid red) and

Alarm Activated (flashing red) LEDs.

6.

Turn Enclosure Pressure Control Regulator slowly CW to set the Enclosure Pressure Indicator to a "Safe" 1.0 inch pressure. The Safe Pressure and Power On LEDs should be on, the Alarm Active should be off. The EPCU will energize enclosure power at this time. Check for a 0.50

to 0.55 inch trip point by slowly stroking the indicator from 0.40 to 1.0 inch readings. The Safe Pressure,

Power On and Alarm Active LEDs should turn on and off when the indicator reads between 0.50 and 0.55 inches.

NOTE: If pressure setting is difficult to stabilize or set, see page 26, “Trouble-Shooting Procedures”.

7.

Having ensured that all LEDs are functioning properly,

Start-Up Procedures located on page 25 may now be followed to step through a complete start up cycle, ensuring that the System functions normally during all phases of operation.

Model

Identification

Nameplate

Enclosure

Pressure

Control

Regulator

Conditional

Bypass

Operating

Instructions

EPCU Power

Selector

Switch

Enclosure

Pressure

Gauge

Start - Up

Instruction

Nameplate

LED Status

Nameplate

EXP EPCU

Enclosure

System

LED

Display

24

Model 2001A-STD-LH

Front View

BEBCO EPS



Operating Sequence

WARNING

Do not exceed a “Safe” pressure with the Enclosure Pressure Control Regulator.

Operators must follow step-by-step sequence of the Start-Up Instructions Nameplate on the Protection System.

Do not use the Bypass Modes without first securing a "Hot Work" permit.

Never leave the system unattended in Bypass Modes.

Class I Purging Operation

With the inert gas supply on, RET Timer set properly,

EPCU power and alarm system energized (if utilized) . .

1.

Carefully read Start-Up Instruction Nameplate on system.

2.

Check operation of the Enclosure Protection Vent (Model

EPV-1, if utilized), opening it manually several times, (see page 23, “Helpful Hint”).

3.

Seal protected enclosure(s).

4.

Depress the On-Off push-button (NR mode) or turn selector switch to the On position (CB mode). Each LED should illuminate fully for two seconds, then all LEDs should turn off except Power Off (solid red) and Alarm

Activated (flashing red) LEDs.

5.

Turn Enclosure Pressure Control Regulator slowly CW to set the Enclosure Pressure Indicator to a "Safe" 0.25

inch pressure. The Safe Pressure and Timer Running

LEDs should be on, the Alarm Active LED should turn off.

NOTE: If the Safe Pressure or Timer Running LEDs blink on and off or "flicker" during this cycle, EPCU will reset

RET timer.

6.

Standby until the EPCU completes the timing cycle and energizes enclosure power. Safe Pressure LED should stay on, Timer Running LED should turn off and Power

On LED should turn on.

7.

Ensure the Protection System Enclosure Pressure

Indicator maintains a “Safe” 0.25 inch pressure for one

(1) minute. Readjust Enclosure Pressure Control

Regulator if required.

8.

If "Safe" 0.25 inch pressure is lost, the EPCU will deenergize enclosure power and activate alarm system

(if utilized).

Class II Pressurization Operation

With the inert gas supply connected, EPCU power energized and alarm system energized (if utilized) . .

1.

Carefully read Start-Up Instruction Nameplate on system.

2.

Check operation of the Enclosure Protection Vent (Model

EPV-1, if utilized), opening it manually several times, (see page 23, “Helpful Hint”).

3.

Remove all traces of combustible dust.

4.

Seal protected enclosure(s).

5.

Depress the On-Off push-button (NR mode) or turn selector switch to the On position (CB mode). Each LED should illuminate fully for two seconds, then all LEDs should turn off except Power Off (solid red) and Alarm

Activated (flashing red) LEDs.

6.

Turn Enclosure Pressure Control Regulator slowly CW to set the Enclosure Pressure Indicator to a "Safe" 1.0 inch pressure. The Safe Pressure and Power On LEDs should be on, the Alarm Active LED should turn off.

NOTE: If the Safe Pressure or Power On LEDs blink on and off or "flicker" during this cycle, EPCU will reset enclosure power.

7.

Ensure the Protection System Enclosure Pressure

Indicator maintains a “Safe” 1.0 inch pressure for one (1) minute. Readjust Enclosure Pressure Control Regulator if required.

8.

If "Safe" 1.0 inch pressure is lost, the EPCU will deenergize enclosure power and activate alarm system (if utilized).

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25

Trouble - Shooting Procedures

Problem or Fault

Enclosure pressure control regulator will not hold a safe pressure.

Possible Causes

Leakage around gasketing, covers, seams, piping and tubing connections, conduit connections and electrical conduit seals of the enclosure.

Corrective Action

Tighten enclosure latches: Where tightening is not feasible, and gasketing materials are not practical, holes or gaps can be closed with silicone sealant applied from inside the protected enclosure.

Enclosure pressure indicator reading is difficult to stabilize.

Insufficient enclosure leakage or opening of the venturi orifice is crimped too small.

Remove the orifice, cut off the crimped end and ream the tube, then recrimp and reinstall the tube to note effect. As tube is shortened, reamed, and recrimped, sensitivity decreases, allowing easier adjustment of setpoint on the enclosure.

Enclosure Pressure Indicator "Drifts" up or down from the "Safe" pressure setting.

Application involves a small, tightly sealed enclosure and/or a fluctuating protective gas supply.

Pre-regulate the protective gas supply upstream of the enclosure protection system to 5 PSI maximum.

For dramatic fluctuations in the protective gas supply, it may be necessary to utilize a self-relieving low flow precision regulator to preregulate the protective gas supply.

Enclosure Pressure Indicator reads a

"Safe" pressure but the Safe Pressure

LED is not illuminated.

Conduit seal between EPCU and protected enclosure is not poured or is leaking pressure back into the EPCU.

EPCU breather drain is clogged (all systems except PM configurations).

Safe Pressure switch is out of calibration.

With area positively known to be nonhazardous, remove screw cover of the EPCU and attempt a complete start-up procedure. If the system works properly, check enclosure power conduit seal for leakage and the EPCU breather drain for blockage.

If the system does not operate properly, calibrate the Safe Pressure switch.

Calibrate by slowly adjusting counterclockwise to decrease the setpoint, and clockwise to raise the setpoint.

(Do not attempt to calibrate the switch until all efforts to make the switch respond properly have failed)

Problems persists, or if the system does not appear to be operating properly.

Persisting problems.

Contact Pepperl+Fuchs Applications/

Customer Service Department at

(330) 486-0002 for more information.

This section covers the most common problems documented with these systems. Any problems not covered in this section should be addressed directly to our factory. Please address all service needs to Pepperl+Fuchs, Inc. - Customer

Service Department at (330) 486-0002.

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Warranty Terms and Conditions

PEPPERL+FUCHS STANDARD 24-MONTH WARRANTY

1.

Limited Warranty. Pepperl + Fuchs, Inc. (“P+F”) warrants Purge Units and components for Purge Units manufactured by

P+F (“Product” or “Products”) to be free from defects in material and workmanship under Normal Use for a period of twenty-four (24) months from the date of shipment of such Products from P+F’s warehouse or place of manufacture (or from P+F’s authorized representative or distributor). Only the original purchaser of such Products (the “Customer”) shall be entitled to the benefit of the foregoing Limited Warranty. No representative, agent or salesman of P+F is authorized to give or provide any warranty or make any representation contrary to or in addition to the foregoing Limited Warranty.

2.

Inspection and Claims. Customer must inspect and test all Products upon receipt. All claims under the Limited Warranty provided herein must be made within thirty (30) days of the discovery of the defect. Customer must obtain shipping instructions from P+F prior to returning any Product, which Product must be returned at Customer’s expense in accordance with P+F’s instructions.

3.

Limitations and Exclusions. “Normal Use” shall mean use and operation within rated capacities, at the correct voltage, and with any required maintenance as provided in the applicable P+F Operating Manuals. The Limited Warranty provided herein does not apply to (i) any Products which have been altered or modified in any way or disassembled by the

Customer or anyone else, (ii) any Products which have been subject to misuse, negligence or accident, or improperly installed, changed, substituted or replaced, (iii) any part or component not manufactured by P+F, or (iv) any part or component that is subject to wear or consumption. For parts or components not manufactured by P+F, the Customer or any other user or owner shall have only the warranty provided by the manufacturer of such part or component. The

Limited Warranty set forth herein is also subject to the following:

(1) The Limited Warranty is limited to electronic and mechanical performance only, as expressly detailed in the product specifications, and does not apply to cosmetic appearance;

(2) The Limited Warranty shall not apply to any cables attached to, or integrated with, any Products.

(3) The Limited Warranty shall not apply to any Products which are stored, or utilized, in harsh environmental or electrical conditions outside P+F’s written specifications.

THE LIMITED WARRANTY SET FORTH HEREIN IS THE ONLY WARRANTY MADE BY P+F WITH RESPECT TO THE

PRODUCTS. IT IS EXPRESSLY AGREED AND UNDERSTOOD THAT P+F MAKES NO WARRANTY OF

MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. EXCEPT FOR THE LIMITED WARRANTY SET FORTH

HEREIN, THERE IS NO OTHER WARRANTY, EXPRESS, IMPLIED OR STATUTORY; AND THERE IS NO AFFIRMATION OF

FACT OR PROMISE BY P+F WITH REFERENCE TO THE PRODUCTS. IN NO EVENT SHALL P+F BE LIABLE FOR

ACTUAL OR ANTICIPATED LOST PROFITS OR FOR INCIDENTAL OR CONSEQUENTIAL OR PUNITIVE DAMAGES OR

FOR DAMAGES RESULTING FROM BUSINESS INTERRUPTION, OR INJURY OR DEATH OF PERSONS, OR INJURY TO

PROPERTY. P+F’S LIABILITY ON ANY CLAIM OF ANY KIND ARISING OUT OF, CONNECTED WITH OR RESULTING

FROM THE DESIGN, MANUFACTURE, SALE, REPAIR OR OPERATION OF A PRODUCT, SHALL NOT EXCEED THE

PRICE ALLOCABLE TO THAT PRODUCT OR THE PART THEREOF WHICH GIVES RISE TO THE CLAIM. THE REMEDY

SET FORTH IN THIS LIMITED WARRANTY CONSTITUTES THE SOLE AND EXCLUSIVE REMEDY OF THE CUSTOMER.

P+F SHALL NOT BE LIABLE FOR PENALTIES OF ANY DESCRIPTION.

4.

Limitation of Remedies. In the event of P+F’s liability, whether on this Limited Warranty or based on contract, tort

(including, but not limited to, negligence and strict liability) or otherwise, Customer’s sole and exclusive remedy will be limited to, at P+F’s option, the repair or replacement (f/o/b P+F’s place of manufacture) by P+F of any non-conforming items for which claim is made by Customer in accordance with paragraph 2, or the repayment of the portion of the purchase price paid by Customer attributable to the non-conforming item.

5.

Responsibility of Customer: Safety and Protection Precautions. P+F takes great care to design and build reliable and dependable Products; however, some Products can fail eventually. Customer must take precautions to design its equipment to prevent property damage and personal injury in the unlikely event of a failure. AS A MATTER OF POLICY,

P+F DOES NOT RECOMMEND THE INSTALLATION OF PRODUCTS AS THE SOLE DEVICE FOR THE PROTECTION OF

PERSONNEL OR PROPERTY AND, THEREFORE, THE CUSTOMER SHOULD BUILD IN REDUNDANCY OR DUAL

CONTROL USING APPROVED SAFETY DEVICES FOR THESE APPLICATIONS.

6.

Conflicts. In the event there is any conflict between the provisions of this Limited Warranty and any provisions contained in any orders, offers, acceptances or other writings or statements provided or made by Customer to P+F, the provisions of this Limited Warranty shall prevail, and the contract between P+F and the Customer shall be deemed formed only upon the provisions set forth in this Limited Warranty, and any additional or conflicting provision inserted by Customer shall be of no force or effect.

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27

System Maintenance

Regular Maintenance

Drain the Protection System Regulator frequently and clean System with non-solvent cleaning agents only.

Long Term Maintenance

Calibrate the enclosure pressure indicator to 0 inches by venting the purge pressure reference port and the protected enclosure to atmosphere and adjusting the calibration screw in the lower center portion of the indicator’s face.

Fully open the enclosure pressure control regulator, to blow out any deposits around the tip of the valve and to ensure that the enclosure protection vent is operating properly, then carefully readjust system according to the set-up procedure and operating sequence on pages 23 through 25. Replace or tighten stem packing nut as required to prohibit stem packing leakage.

Carefully disassemble the enclosure protection vent by loosening the two bottom hex nuts that hold the unit together.

(DO NOT REMOVE CAP NUTS ON TOP OF VENT BODY)

Carefully clean the flapper valve and vent body seats with warm soap and water, being careful not to extend the vent valve beyond its normal opening point, and being careful not to exert any stress on the valve hinge.

Examine the entire Protection System and the protected enclosure(s), and replace any defective parts during routine shutdown of the protected enclosure(s). Parts are available from Pepperl+Fuchs on immediate notice as required.

MAINTENANCE SCHEDULE

Date Work Performed Performed by

28

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Date

MAINTENANCE SCHEDULE

Work Performed Performed by

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29

CUSTOMER NOTES

30

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CUSTOMER NOTES

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31

NOTES:

SYSTEMS IDENTIFICATION & APPLICATION INFORMATION

Date of Installation

Unit Serial #

Item

Customer P.O.#

Customer Project#

Service

Type

Features

Application

Local Sales Representative

32

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Pepperl+Fuchs 2001A STD Enclosure Protection System Installation & Operation Manual

Assistant Bot

CLASS I APPLICATIONS

2 Cubic Feet Maximum

CLASS II APPLICATIONS

10 Cubic Feet Maximum

M

2001A

T

X

RESSURIZATION

URGING

YSTEM

NSTALLATION

PERATION

ANUAL

BEBCO EPS

Page 2

Page 3

Page 4

Page 5

Page 6

Page 7

Page 8

Page 9

Page 10

Page 11

Page 12

Page 13

Page 14

Purpose

Table of Contents

Page 15

Page 16

Page 17

Page 18

Page 19

Page 20

Page 21

Page 22

Page 23

Page 24

Page 25

Page 26

Page 27

Pages 28

Pages 30 & 31

Page 32

Important Notes

Description

Identifying Your System

Model 2001A-STD-CI Type X

HELPFUL HINT IMPORTANT NOTE WARNING

General Information

System Specifications

Material Specifications

Recommended Spare Parts

Installation Tools & Testing Equipment

Model 2001A System Accessories

Enclosure & Device Design

Enclosure Design Requirements

Adjacent Enclosures

Total Volume Calculation

Device Ventilation

Temperature Limitations

Installation Overview

Typical Left Hand Configuration Installation Diagram

Getting Started

Establishing Connection Sizes, Lengths & Bends

HELPFUL HINTS

Determining Enclosure Inlet & Outlet Connection Locations

HELPFUL HINTS

System Mounting

IMPORTANT NOTES

Mounting LH, RH, TM, BM & WM Configurations

Mounting FM & PM Configurations

HELPFUL HINTS

Typical Examples of Surface, Pipe, Panel & Frame Mounted Systems

Hardware Mounting

Optional Enclosure Protection Vent