Pepperl+Fuchs 1001B Series, 1001B-LPS-CII Y, 1001B-LPS-CII Z Installation & Operation Manual

CLASS II APPLICATIONS

ISC * 877-602-0010 * www.iscenclosurecooling.com

50 Cubic Feet Maximum

MODEL 1001B

TYPE Y OR Z

PRESSURIZATION SYSTEM

INSTALLATION & OPERATION MANUAL

LPS Style

(Less Pressure Switch)

WPS Style

(With Pressure Switch)

Table of Contents

ISC * 877-602-0010 * www.iscenclosurecooling.com

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, Maintenance Procedures

Page 5 Enclosure and Device Design

Design Requirements, Adjacent Enclosures,
Device Ventilation, Temperature Limitations

Page 6 Installation Overview

Installation Diagram

Page 7 Getting Started

Establishing Connection Sizes, Determining
Enclosure Inlet & Outlet Connection Locations

Page 8 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 Installation

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

Page 14 Tubing Connection Diagrams

LH, RH, TM, BM, WM, FM, & PM Configuration
Connection Points, Pneumatic Diagram

Page 15 Electrical Supply Requirements

Wiring Requirements, Enclosure Power & Alarm
Signal, Enclosure Wiring Methods & Connections

Page 16 Conduit Installation

Electrical & WPS Style Conduit and Connection
Parts

Page 17 Set-Up & Operating Procedures

Class II Set-up and Operation

Page 18 Trouble - Shooting Procedures

Trouble-shooting Chart

Page 19 Warranty and Liability Statement

Warranty Notes, General Terms, Limitations

Page 20 Systems Identification & Application

Information

Purpose

Pepperl+Fuchs' Bebco EPS System’s purpose is to allow
the use of general purpose or nonrated 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 or 9 enclosures. Other purposes include

heat, moisture and dust contamination prevention.

Description

Model 1001B is an enclosure pressurization 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. In Class II areas, the system maintains a
“safe” (1.0") pressure. This process reduces the hazardous
(classified) area rating within the enclosure(s), in
accordance with the NEC - NFPA 70, Article 500, NFPA 496
and ISA 12.4

Important Notes

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 a combination of 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

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

BEBCO EPS

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Identifying Your System

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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.

SYSTEM STYLE

SYSTEM CLASS RATING

Defines Class rating for Protection

System’s method of use

CII - Class II Pressurization system

SERIES

MODEL NUMBER

Systems are available in two styles, with
or without an explosion proof differential

pressure switch, used to detect loss of

“safe” enclosure pressure

LPS - Less Pressure Switch

WPS - With Pressure Switch

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

To assist you through the installation and operation of your pressurization / purge system, Pepperl+Fuchs, Inc. 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.

Model 1001B-LPS-CII Type Y or Z

50 CUBIC FEET MAXIMUM ENCLOSURE VOLUME

REDUCES INTERNAL AREA CLASSIFICATION AS FOLLOWS:

TYPE Y: CL. II, DIV. 1, GR. F & G TO CL. II, DIV. 2

TYPE Z: CL. II, DIV. 2, GR. F & G TO NONHAZARDOUS

PURGE CONTROL FOR USE IN HAZARDOUS LOCATIONS. IN ACCORDANCE WITH THE NATIONAL FIRE
PROTECTIONASSOCIATION STANDARD FOR PURGED AND PRESSURIZED ENCLOSURES FOR ELECTRICAL
EQUIPMENT NFPA 496-2003 7L93

APPROVED BY FACTORY MUTUAL AS ASSOCIATED TYPE Y & Z PRESSURIZATION CONTROL
EQUIPMENT FOR USE IN HAZARDOUS LOCATIONS. REDUCES THE INTERNAL AREA
OF A CONNECTED ENCLOSURE IN ACCORDANCE WITH DRAWING NUMBER 129-0201.

AREA

CLASSIFICATION

Defines the area
classification for

which the system is

suitable for operation

APPROVAL
MARKINGS &
DEFINITIONS

Identifies the current
third party approvals

for this system

SYSTEM TYPE

Type Z

Reduces the internal

enclosure area

Division rating from

Division 2 to

nonhazardous

Type Y

Reduces the internal

enclosure area

Division rating from

Division 1 to

Division 2

HELPFUL HINT

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

BEBCO EPS

Telephone [phone] • FAX [phone] • E-Mail: [e-mail]

IMPORTANT NOTE

WARNING

3

General Information

ISC * 877-602-0010 * www.iscenclosurecooling.com

System Specifications

System Dimensions: See Pages 10 & 11
Shipping Weight ( lbs.): LPS - 7, WPS - 12
Operating Temperature Range: -20° F - 120° F
Supply Pressure Range: * 5 -120 PSI max.
Supply Requirements: Clean Air or Inert Gas
Safe Pressure Setpoint: 1.0"
Safe Pressure Flowrate: ** 0.1-3.5 SCFH/Cubic Ft.
System Supply Fitting: 3/8" Tube Fitting
Enclosure Supply Fitting: 3/8" Tube Fitting
Enclosure Reference Fitting: 1/4" Tube Fitting
Switch Setting (Decr,) 0.5"
Switch Conduit Port Size: 1/2" FPT
Switch Contact Rating: 120 VAC, 15 Amps

* With EPV-3 Vent - 120 PSI max. to 5 PSI minimum

Systems installed without EPV-3 must be equipped
with redundant regulator set to 5 PSI maximum

** Enclosure integrity determines actual flow rate

+ .02"

Material Specifications

Regulator Body: Zinc w/ Enamel Finish
Regulator Handle: Polycarbonate
Enclosure Pressure Gauge: Alum. w/ Enamel Finish
Tube Fittings: 316 SS Forged Body
Tubing: 316 SS 1/4" .035 Welded
System Nameplates: Silkscreened Lexan
Fastener Hardware: Aluminum & Stainless Steel
Mounting Plate: 316 14 Ga #3 Brush SS
EXP Pressure Switch Body: Anodized Cast Alum.
Enclosure Warning Nameplate: Silkscreened SS

Lexan® is a registered trademark of the General Electric Corporation

®

& SS

Model 1001B System Accessories

Recommended Spare Parts

Qty Description Part # (supercedes)

1 Enclosure Pressure Indicator-CII 513235 (001027)
1 Enclosure Pressure Control Regulator 513236 (002050)
1 Installation & Operation Manual 129-0201

EXP Encl Pressure Loss Alarm Switch-CII

1
1 Enclosure Warning Nameplate-CII 513009 (EWN-2)

Please call and reference the above part number for
current spare parts pricing. Immediate pricing is available
to all confirmed customers.

513242 (001082)

Installation Tools & Testing Equipment

1/2" chuck drill
Complete set of drill bits

1.25" conduit knockout punch or 1.75" hole saw
Complete set of tubing, conduit bending, instrument fitting
and electrical craftsman hand tools
0 - 250 scfh flowmeter (connected upstream of the Protection
System to determine air consumption and flow during set-up

procedure)

Maintenance Procedures

Regular Maintenance Procedure

Drain the Protection System Filter frequently (if equipped
with a Model ILFK In-Line Filter Kit) and clean System with
non-solvent cleaning agents only, such as soap and water.

Long Term Maintenance Procedures

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.

Optional Enclosure Protection Vents

EPV-3-SA-00 Straight w/ Spark Arrestor
EPV-3-SA-90 Rt Angle w/ Spark Arrestor

Additional Items

SMK-1, -4 or -6 System Mounting Kit
EPSK-2 Class II, Explosion Proof Switch Kit
GPSK-2 Class II, General Purpose Switch Kit
RAH Div. 1 Remote Alarm Horn
RAB-1 Div. 1 Remote Alarm Beacon
RAB-2 Div. 2 Remote Alarm Beacon
LCK L Fitting Conduit Kit
TCK T Fitting Conduit Kit

4

BEBCO EPS

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If vent is utilized, fully open the enclosure pressure control
regulator, to blow out any deposits around the tip of the
regulator and to ensure that the enclosure protection vent is
operating properly, then carefully readjust system according
to the set-up and operating procedures on page 17. 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.

Enclosure & Device Design

ISC * 877-602-0010 * www.iscenclosurecooling.com

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 ten
(10) 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.

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

enclosures, hermetically sealed devices 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.

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.

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

a) The device is enclosed in a chamber that 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.

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Installation Overview

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Typical Left Hand Configuration Installation Diagram

Model 1002-WPS-LH Shown

ENCLOSURE

PROTECTION

VENT

PROTECTED
ENCLOSURE

ENCLOSURE

SUPPLY TUBING

SYSTEM

MOUNTING

BOLT

PROTECTIVE
GAS SUPPLY

SERVICE

VALVE

SUPPLY TUBING

ENCLOSURE

PROTECTION

SYSTEM

SYSTEM

SUPPLY FITTING

SYSTEM

ENCLOSURE
REFERENCE

TUBING

ENCLOSURE

CONNECTION

FITTINGS

ENCLOSURE

WARNING

NAMEPLATE

6

ELECTRICAL ALARM WIRING

CONDUIT & SEAL

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Getting Started

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Establishing Connection Sizes, Lengths & Bends

TYPICAL SINGLE PROTECTED ENCLOSURE CONNECTIONS

1/2"
PROTECTIVE
GAS SUPPLY

HEADER

A

Description

*Tubing or Pipe Diameter

Maximum Tubing / Pipe Length and

Maximum Number of Bends / Elbows

TYPICAL MULTIPLE PROTECTED ENCLOSURE CONNECTIONS

1/2"
PROTECTIVE
GAS SUPPLY

HEADER

ENCLOSURE

PROTECTION

SYSTEM

ENCLOSURE
PROTECTION

SYSTEM

A

System

Supply Tubing

3/8" O.D. Tubing

Fully Reamed

20 Feet

10 Bends

SUPPLY

C

REFERENCE

SUPPLY

B

B

PROTECTED
ENCLOSURE

B

Enclosure

Supply

3/8" O.D. Tubing

Fully Reamed

5 Feet

5 Bends

PROTECTED
ENCLOSURE

REFERENCE

ENCLOSURE PROTECTION VENT

(Optional)

E

C

Enclosure
Reference

1/4" O.D. Tubing

Fully Reamed

20 Feet

10 Bends

Multi - Enclosure

D

PROTECTED
ENCLOSURE

D

Connections

1" I.D. Pipe

Fully Reamed

10 Feet

5 Elbows

D

PROTECTED
ENCLOSURE

E

Optional Remote

Venting

1" I.D. Pipe

Fully Reamed

30 Feet

5 Elbows

A

C

*NOTE: Tube and pipe sizes are trade sizes and are not equal in inside
diameter. DO NO 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.

nnoott

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

BEBCO EPS

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7

System Mounting

ISC * 877-602-0010 * www.iscenclosurecooling.com

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.

Mounting LH, RH, TM, BM & WM Configurations

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

Surface mounting Systems

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-1 mounting kit or equivalent

- four (4) 1/4" x 3/4" stainless steel bolts, nuts and lock
washers.

1. Locate 2" schedule 40 pipe, (vertical for LH & RH,
horizontal for TM & BM) within five (5) feet of protected
enclosure.

2. Ensure system is mounted in a true vertical position,
secure the system to pipe, using one (1) PMK-1 mounting
kit or equivalent - two (2) 1/4" x 2" stainless steel “U”
bolts, nuts and lock washers.

Pipe mounting Systems

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-4 or SMK-6
mounting kits. 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 connections.

3. Cut panel cutout pattern on the intended surface.

4. Deburr all cutout surfaces.

5. Secure system to enclosure using SMK-4 or SMK-6
mounting kit, or equivalent 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-CI-Z-LH shown)

8

BEBCO EPS

Typical Pipe Mounted System

(Model 1002-LPS-CI-Z-LH shown)

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Typical Panel/Frame Mounted System

(Model 1002-LPS-CI-Z-PM shown)

Hardware Mounting

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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 1.75" hole saw or 1.25" 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.

EPV - 3 - SA - 00

Vertical Mount

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

Enclosure Warning Nameplate - Class I

Enclosure Warning Nameplate - Class II

EPV - 3 - SA - 90

Side Mount

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Enclosure Temperature Warning Nameplate

9

Mounting Plate Dimensions

ISC * 877-602-0010 * www.iscenclosurecooling.com

Model 1001B

12"

7"

.25" O.D.

TYP. 4

8.875"

1001B-LPS-LH

(Left Hand Configuration)

7.25"
4"

3.375"
.625"

11.375"

6"
4"

3.375"
.625"

6.375"

.25" O.D.

TYP. 4

12"

.25" O.D.

TYP. 4

8.875"

1001B-WPS-LH

(Left Hand Configuration)

6"
4"

3.375"
.625"

7.25"

4"

3.375"
.625"

11.375"

.25" O.D.

TYP. 4

8.875"

1001B-WPS-RH

(Right Hand Configuration)

8.75"

3.375"

.625"

8.125"

7"

6"

4"

.25" O.D.

TYP. 4

7"

3.375"

.625"

6.375"

8.875"

1001B-LPS-RH

(Right Hand Configuration)

14.25"

13.625"

8"

7.25"

4"

.25" O.D.

TYP. 4

10

1001B-LPS-TM

(Top Mount Configuration)

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1001B-WPS-TM

(Top Mount Configuration)

Mounting Plate Dimensions (cont.)

ISC * 877-602-0010 * www.iscenclosurecooling.com

Model 1001B

14.25"

.625"

3.375"

13.625"

1001B-WPS-BM

(Bottom Mount Configuration)

7"

6"

8"

.25" O.D.

TYP. 4

4"

7.25"

7.5"

6"

7"

8.75"

.25" O.D.

TYP. 4

4"

.625"

3.375"

8.125"

1001B-LPS-BM

(Bottom Mount Configuration)

12"

11"

6"

9.25"

6"

(Wall Mount Configuration)

.25" O.D.

TYP. 6

Panel Cutout

13"

8.875"

1001B-LPS-WM

1"

Panel Cutout

9.875"

14"

10.875"

1001B-WPS-FM

(Frame Mount Configuration)

.25" O.D.

7.875"

TYPICAL -WM

MOUNTING FLANGE

3.25"3.25"

TYP. 4

.5"

Panel Cutout

8.875"

1001B-WPS-WM

(Wall Mount Configuration)

.25" O.D.

TYP. 4

8"

Panel Cutout

9.875"

10.875"

1001B-LPS-FM & 1001B-LPS-PM

(Frame & Panel Mount Configuration)

2.75" 2"

9"

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11

Pneumatic Tubing Requirements

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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-3 Enclosure Protection Vent, the protective gas supply
to the protection system must not exceed 120 psi maximum,
5 psi minimum.

Pneumatic Connection Requirements

ALL FITTINGS MAY BE CUSTOMER OR FACTORY FURNISHED

1. For system supply, one (1) SC-6 3/8" Male Straight
Connector or one (1) NC-6 3/8" 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 3/8" O.D., .035" wall thickness,
welded or seamless stainless steel tubing.

2. For enclosure supply, one (1) EFC-6 3/8" Flush
Connector, or one (1) EBC-6 3/8" 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" & 3/8" O.D., .035" wall thickness,
welded or seamless stainless steel tubing.

5. For multiple enclosure connections, two (2) EPC-13

1.25" Pipe Mounting Hubs or equivalent and 1.25" 150#
rated pipe couplings & unions per interconnection.

SC-6

SYSTEM SUPPLY FITTINGS

EFC-4 & EFC-6

ENCLOSURE SUPPLY & REFERENCE FITTINGS

NC-6

EBC-4 & EBC-6

One (1) lot 150# rating 1.25" 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-6 or equivalent 3/8" 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.

PRB-4

SYSTEM ATMOSPHERIC REFERENCE FITTING

EPC-13

MULTIPLE ENCLOSURE CONNECTION FITTING

12

BEBCO EPS

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

ISC * 877-602-0010 * www.iscenclosurecooling.com

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.

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

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”).

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. 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.

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. 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
to reference atmospheric pressure.

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

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

BEBCO EPS

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

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

13

Tubing Connection Diagrams

ISC * 877-602-0010 * www.iscenclosurecooling.com

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

WPS Style

System

Supply

Optional EXP

Pressure Switch

Venturi

Orifice

Sintered

Vent

Enclosure

Pressure

Gauge

Enclosure

Reference

Inlet

Venturi
Orifice

Mounting

Plate

Enclosure

Pressure Gauge

Regulator

Sintered

Vent

Reference

System

Supply

Inlet

Enclosure

Pressure

Control

Regulator

Enclosure

Supply
Outlet

LPS Style

Optional Enclosure

Protection Vent

Enclosure Reference

Bulkhead fitting

Enclosure

Pressure

Gauge

Atmospheric

Reference

Inlet

Mounting

Plate

HELPFUL HINT

Pneumatic Connections

are bolded.

Inlet

Supply

Enclosure Supply

Bulkhead fitting

Protected Enclosure

PM Configuration Connection Points & Pneumatic Diagram

System

Supply

Inlet

Enclosure

System

Supply

Pressure

Control

Regulator

Enclosure

Supply
Outlet

Inlet

Atmospheric

Reference

Bulkhead

System Supply

Bulkhead

Reference

Supply

Optional Enclosure

Protection Vent

Enclosure

Pressure Gauge

Regulator

Protected Enclosure

Sintered

Vent

14

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

BEBCO EPS

Telephone [phone] • FAX [phone] • E-Mail: [e-mail]

Electrical Supply Requirements

ISC * 877-602-0010 * www.iscenclosurecooling.com

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.

Note: 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”.

Enclosure Power Requirements

The protected enclosure(s) electrical power source must
originate from a circuit breaker or fused disconnect suitable for
the hazardous location in which it is installed. The switch must
be located within fifty (50) feet of the protected
enclosure(s) and the protection system and be properly marked.

Typical Enclosure Wiring Methods

In 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.

Alarm Signal Requirements

For Type Y and Z purge systems, audible alarms or visual
indicators must be used to notify operators that pressure
inside the enclosure is below the NFPA minimum.

Alarms are connected directly to the enclosure and monitor
the differential air pressure between the enclosure and the
environment outside it. These alarms are activated by the
reduction in flow or pressure within the protective enclosure
and have a direct connection to the enclosure, eliminating

the need for an alarm on the protective gas supply.

• The alarm must be located where the operator can see it easily.

• The alarm must take its measurement from the enclosure only.

• Alarms located in the hazardous area must be rated for the area.

• Valves cannot be connected between the alarm and the enclosure.

IMPORTANT NOTE

NFPA 496 requires the use of an alarm or an indicator to
detect the loss of safe enclosure pressure. In addition, the
NFPA 496 requires that if an indicator alone is utilized, a
protective gas supply alarm must also be installed between
the last valve in the protective gas supply and the protected
enclosure. Therefore, the protective gas supply to all LPS
Style systems must be equipped with the above mentioned
protective gas supply alarm. Exception: Systems utilizing
a P+F Model EPSK or GPSK enclosure pressure loss alarm
switch accessory will satisfy the above mentioned NFPA
requirement.

Protected Enclosure

Typical Enclosure Wiring Connections

Explosion

Conduit

Seal

Conduit

Seal

Gland
Fitting

Cable

Conduit

Seal

Pressurized

Raceway

Or Device

Proof Device

Intrinsically

Safe Or Fiber

Optic Device

Intrinsically

Safe Or Fiber

Optic Device

Independently

Pressurized

Device

Adjacent

Pressurized

Device

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

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15

Conduit Installation

ISC * 877-602-0010 * www.iscenclosurecooling.com

Electrical Conduit

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
and power 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.

HELPFUL HINT

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, the use of temporary seals such as duct
seal or masking tape for bench or shop testing, prior
to final field installation may be used.

WPS Style Conduit

WPS style systems provide electrical contacts for audible
or visual alarm devices that signal a loss of protected
enclosure pressure. WPS style systems are calibrated to
alarm at 0.50" for Class II applications. The switches are
suitable for hazardous (classified) outdoor locations.
Wiring must be installed with a seal and conduit fittings
suitable for the area. Alarm circuit power may be derived
from the protected enclosure power source or an
intrinsically safe alarm signal source. All associated
alarm devices must be protected by suitable means
(explosion proof, purged or intrinsically safe).

WPS Style Conduit Connection Parts

Fitting Kits Can Be Factory Furnished

1. For WPS Style EXP pressure loss alarm switch connected
to an enclosure mounted alarm, one (1) LCK (L fitting
Conduit Kit) or equivalent conduit elbow, coupling and
seal fittings.

2. For WPS Style EXP pressure loss alarm switch connected
to a remote mounted alarm, one (1) TCK (T fitting
Conduit Kit) or equivalent conduit tee, coupling and seal
fittings.

3. One (1) lot 150# rating 1/2” galvanized or aluminum pipe.

Switch

Body

SetPoint

Calibration

Screw

Grounding

Screw

1/2"

Conduit

Port

16

Electrical

Switch

Contacts

Low Port

Sintered

Vent

TCK “T” Fitting Conduit Kit

LCK “L” Fitting Conduit Kit

WPS Style EXP Pressure Switch

With Cover Removed

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

BEBCO EPS

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High Port

Tube

Fitting

Set-up & Operating Procedures

ISC * 877-602-0010 * www.iscenclosurecooling.com

HELPFUL HINTS

The term “Safe” pressure for purposes of this manual
is defined as 1.0 inch of water column pressure.

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

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 conduit
plug at the bottom of the mounting tee. Multiple
operations require only one test per day if enclosure is
not opened or left unattended.

position.

Set-up

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

2. Remove all combustible dust from protected enclosure.

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” pressure on the Enclosure Pressure Indicator.

NOTE: If pressure setting is difficult to stabilize or set, see

page 18, “Trouble-Shooting Procedures”.

5. Install and tighten all bolts on the pressure loss alarm
switch (if utilized). Energize power to Switch (if utilized)
and test the function of the alarm system.

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.

Operation

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

1. Carefully read Start-Up Instruction Nameplate on system.

2. Check operation of the Enclosure Protection Vent
(EPV-3, if utilized), opening it manually several times,
(see “Helpful Hint” on this page).

3. Remove all traces of combustible dust.

4. Seal protected enclosure(s).

5. Open Enclosure Pressure Control Regulator by turning
CW to set Enclosure Pressure Indicator at “Safe”
pressure, the Pressure Loss Alarm Switch should then
activate to silence the alarm system (if utilized).

6. Ensure the Protection System Enclosure Pressure
Indicator maintains a “Safe” pressure for one (1) minute.

7. Energize the protected enclosure power.

8. Ensure the Enclosure Pressure Indicator maintains a
“Safe” pressure before leaving system unattended.

Enclosure

Pressure

Control

Regulator

Model

Identification

Nameplate

Enclosure

Pressure

Gauge

Model

Identification

Nameplate

Enclosure

Pressure

Control

Regulator

Start - Up
Instruction
Nameplate

EXP Pressure

Loss Alarm

Switch

Enclosure

Pressure

Gauge

Model 1001B-LPS

Front View

Model 1001B-WPS

Front View

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

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17

Trouble - Shooting Procedures

ISC * 877-602-0010 * www.iscenclosurecooling.com

Problem or Fault

Enclosure pressure control regulator
will not hold a safe 1.0 inch pressure.

Enclosure pressure indicator reading
is difficult to stabilize.

Enclosure pressure loss alarm switch
does not appear to be operating.

Possible Causes

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

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

Pressure switch is out of calibration.

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.

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.

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.

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 [phone].

Persisting problems.

Contact Pepperl+Fuchs Applications/
Customer Service Department at
[phone] for more information.

18

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

BEBCO EPS

Telephone [phone] • FAX [phone] • E-Mail: [e-mail]

Warranty Terms and Conditions

ISC * 877-602-0010 * www.iscenclosurecooling.com

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.

Inspection and Claims. Customer must inspect and test all Products upon receipt. All claims under the Limited Warranty

2.
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.

Limitations and Exclusions. “Normal Use” shall mean use and operation within rated capacities, at the correct voltage, and

3.
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.

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

4.
(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.

Responsibility of Customer: Safety and Protection Precautions. P+F takes great care to design and build reliable and

5.
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.

Conflicts. In the event there is any conflict between the provisions of this Limited Warranty and any provisions contained in

6.
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.

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

BEBCO EPS

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19

SYSTEMS IDENTIFICATION & APPLICATION INFORMATION

ISC * 877-602-0010 * www.iscenclosurecooling.com

Date of Installation

Unit Serial #

Item

Customer P.O.#

Customer Project#

Service

Type

NOTES:

Features

Application

20

Local Sales Representative

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BEBCO EPS

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